Diabetes Mellitus, Type 2Phase 2NCT01018017
A Clinical Study to Assess the Safety, Tolerability, and Activity of Oral SRT2104 Capsules Administered for 28 Days to Subjects With Type 2 Diabetes Mellitus
A Phase 2 study testing SRT2104 in people with Diabetes Mellitus, Type 2, run by GlaxoSmithKline at 1 site in Germany.
Trial summary
Randomized, placebo-controlled, parallel-group, double-blind, multiple-dose, activity and safety clinical study of SRT2104 administered orally once daily for 28 consecutive days. Read more about this study
- Who is it for?
- Ages 18 to 65 years
- Conditions the study is for
- Diabetes Mellitus, Type 2
- What is being tested?
- SRT2104
- Type of treatment
- Pill or oral medicine
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 86 participants
- Where
- 1 siteGermany
- Study dates
- 3 Mar 2010to 25 Dec 2010
- Phase
- Phase 2
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 65 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Able and willing to provide written informed consent to participate in the study
- Ambulatory male and female subjects (of any race) with T2D within the age range of 18-65 years (inclusive) at the time of screening
- All female subjects must be of non-childbearing potential. All male subjects must agree with their partners to use double-barrier birth control or abstinence while participating in the study and for 12 weeks following the last dose of investigational product. For the purposes of this study, non-childbearing is defined as:
- Amenorrheic for at least 12 consecutive months; menopausal status in amenorrheic females will be confirmed by demonstrating levels of follicle stimulating hormone (FSH) >40-138 mIU/mL and estradiol < 30 pg/mL at entry. In the event a subject's menopause status has been clearly established (for example, the subject indicates she has been amenorrheic for 10 years), but FSH and/or estradiol levels are not consistent with a post-menopausal condition, determination of subject eligibility will be at the discretion of the principal investigator with agreement of the independent medical monitor
- At least 6 weeks post-surgical bilateral oophorectomy (with or without hysterectomy) or post tubal ligation
- The subject must be on stable metformin monotherapy for a minimum of 3 months prior to the Screening visit.
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- HbA1c of 6.5%-9.5% (inclusive)
- Body Mass Index (BMI) of 22-38 kg/m^2 (inclusive)
- Resting supine blood pressure (BP) < 160/90 mmHg
- Have a normal 12-lead electrocardiogram (ECG) or one with changes considered to be clinically insignificant on medical review and QTc intervals as defined below:
- QTcB must be <450 msec for males and <470 msec for females (based on single or average QTc value of triplicate ECGs obtained over a brief period)
- QTcB must be <480 msec in subjects with Bundle Branch Block
- Comprehension of the nature and purpose of the study and able to comply with the protocol requirements
- Able to communicate in person and by telephone in a manner that allows all protocol procedures to be carried out safely and reliably in the opinion of the investigative site staff
Who cannot join
- Any major illness in the 3 months prior to study entry or any significant ongoing chronic medical illness not related to diabetes (e.g., recent myocardial infarction, unstable angina, stroke, or transient ischemic attack) which in the opinion of the principal investigator or medical monitor could risk subject safety or interpretation of the results
- Renal or liver impairment, defined as:
- Serum creatinine level of ≥ 1.4 mg/dL for females and ≥ 1.5 mg/dL for males
- AST and ALT ≥ 2xULN
- alkaline phosphatase and bilirubin > 1.5xULN (an isolated bilirubin >1.5xULN is acceptable if bilirubin is fractionated and direct bilirubin is <35%)
- A positive pre-study Hepatitis B surface antigen or positive Hepatitis C antibody result within 3 months of Screening
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- A positive test for HIV antibody
- History of or current gastrointestinal diseases influencing drug absorption as judged by the investigator
- Significant history of alcoholism or drug/chemical abuse, or a positive result of the urine drug/alcohol screen at the Screening Visit, or consuming more than 28 units of alcohol per week (one unit of alcohol equals about 250 mL of beer or lager, one glass of wine, or 20 mL spirits)
- Participation in any clinical trial within 3 months prior to the first dose of investigational product in the current study
- History of difficulty in donating blood or accessibility of veins in left or right arm
- Donation or loss of blood (more than 500 mL) within 3 months prior to receiving the first dose of investigational product
- Use of any prescription drug therapy, with the exception of any prescription medication administered at a stable dose for at least 6 weeks prior to Screening, provided the medication is not contraindicated by the metformin label (see Appendix A for Glucophage® Summary of Product Characteristics)
- Use of any anti-diabetic therapy other than metformin, within 3 months of the first dose of investigational product
- Use of any dietary or herbal supplements within 3 weeks prior to the first dose of investigational product
- History of sensitivity to any of the study medications, or components thereof or a history of drug or other allergy that, in the opinion of the investigator or medical monitor, contraindicates their participation
- Active neoplastic disease or history of neoplastic disease within 5 years of study entry (except for basal cell carcinoma of the skin or carcinoma in situ)
- Increased risk of thrombosis, e.g., subjects with a history of deep leg vein thrombosis or family history of deep leg vein thrombosis, as judged by the investigator
Trial locations and contacts
1 site in 1 country.
About this study
Official title: A Phase IIa, Randomized, Placebo-Controlled, Double-Blind Clinical Study to Assess the Safety, Tolerability, and Activity of Oral SRT2104 Capsules Administered for 28 Days to Subjects With Type 2 Diabetes Mellitus
Randomized, placebo-controlled, parallel-group, double-blind, multiple-dose, activity and safety clinical study of SRT2104 administered orally once daily for 28 consecutive days. This will be an inpatient/outpatient study to assess the safety and pharmacokinetics of SRT2104 in type 2 diabetic male and female subjects on an existing, stable, background metformin therapy. Approximately 80 subjects will be enrolled. Subjects will be evenly randomized to receive SRT2104 2.0 g/day or placebo in the fed state.
Subjects will be required to stay overnight at the study center on Days -2, -1, 0, 1 (optional discharge at investigator's discretion), 27, 28, 41, and 42. During these admissions, pharmacokinetic, biomarker and glycated albumin samples will be collected, and glucose profiling, OGTT, glucose stabilization, hyperinsulinemc euglycemic clamp (HEGC) studies with indirect calorimetry and various other safety and activity procedures will be performed. On Day 1 of the study, subjects will be randomized to receive SRT2104 or placebo. Day 43 will be the last day of the study and subjects will be released. In addition, subjects will be asked to return to the study center on Day 14 for interim safety assessments.
During the dosing period, study personnel will contact subjects by telephone on Days 7 and 21 to conduct a safety assessment. Subjects will be required to monitor their fasting blood glucose and complete a daily diary for the outpatient portion of the study between Days 1 and 28. A follow-up, safety phone call will occur 30 days following their final dose of SRT2104 or placebo (Day 58 of the study) to identify any possible additional adverse events or concomitant medications.
Read the detailed description
Randomized, placebo-controlled, parallel-group, double-blind, multiple-dose, activity and safety clinical study of SRT2104 administered orally once daily for 28 consecutive days. This will be an inpatient/outpatient study to assess the safety and pharmacokinetics (PK) of SRT2104 in type 2 diabetic (T2D) male and female subjects on an existing, stable, background metformin therapy. Approximately 112 subjects aged 18-65 years, who fulfill the inclusion/exclusion criteria, will be screened for this study to enroll approximately 80 subjects. Subjects will be evenly randomized to receive SRT2104 2.0 g/day or placebo approximately 15 minutes following consumption of a standardized morning meal. Subjects will remain on a fixed dose of test material for all dosing days in the study.
Subjects will sign the informed consent form at the Screening Visit, and will undergo screening assessments to verify eligibility for the study. If eligible and willing to participate, subjects will return to the clinic within 21 days of the Screening Visit to participate in the pre-dosing phase of the study. On Day 1 of the study, subjects will be randomized to receive SRT2104 or placebo. Subjects will be required to stay overnight at the study center on Days -2, -1, 0, 1 (optional discharge at investigator's discretion), 27, 28, 41, and 42 for testing, to assess safety, and to gather required biomarker samples. In addition, subjects will be asked to return to the study center on Day 14 for interim safety assessments. The subject will be telephoned on Days 7 and 21 to assess safety. Subjects will be required to monitor their fasting blood glucose and complete a daily diary for the outpatient portion of the study between Days 1 and 28. A follow-up, safety phone call will occur 30 days following their final dose of SRT2104 or placebo (Day 58 of the study) to identify any possible additional adverse events (AEs) or concomitant medications.
- Conditions
- Diabetes Mellitus, Type 2
- Being tested
- Placebo, SRT2104
- Medical subject headings
- Diabetes Mellitus, Type 2
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
PlaceboDrug
For placebo product, the SRT2104 drug substance will be replaced by microcrystalline cellulose (Avicel® PH 105) to match the SRT2104 investigational product.
SRT2104Drug
SRT2104 will be supplied as hard gelatin capsules, with each containing 250mg SRT2104.
| Study group | Role | What they receive |
|---|---|---|
| 2.0g SRT2104 | Active comparator | The 2.0g SRT2104 treatment group will be administered eight SRT2104 capsules per day. 2.0g SRT2104 will be administered orally once daily for twenty-eight consecutive days. During non-clinic days, the subject will self-administer the test material approximately 15 minutes following consumption of a standard morning meal at home (200 cc of Ensure Plus®). Receives: Drug: SRT2104 |
| Placebo | Placebo comparator | The placebo treatment group will be administered eight placebo capsules per day. Placebo will be administered orally once daily for twenty-eight consecutive days. During non-clinic days, the subject will self-administer the test material approximately 15 minutes following consumption of a standard morning meal at home (200 cc of Ensure Plus®). Receives: Drug: Placebo |
What is being measured
The primary outcome is the main question the study is designed to answer.
The areas under the glucose concentration time curve from time 0 (dosing) to 2 hours post-dose (AUC 0-2h, glucose) obtained during an oral glucose tolerance test (OGTT) on days 28 and 42.
AUC 0-2h, glucose was obtained pre-dose (Day -1), at the end of the dosing period (Day 28), and at end-of-study (Day 42). Blood samples were obtained prior to administration of 75 g of oral glucose which was administered as standard glucose beverage after an overnight fast, within 15 minutes. A peripheral blood sample was drawn from a peripheral arm vein prior to the participant consuming the beverage. Additional blood samples were drawn at 30, 60, 90, and 120 minutes after the participant had consumed the glucose beverage for the measurement of glucose, insulin and C-peptide concentrations. Blood glucose concentrations were determined with a glucose analyzer. On Day 28, on which the participant received also investigational product, the OGTT had to be performed prior to consumption of standard meal and administration of investigational product.
Measured: Day 28 and Day 42
The areas under the serum insulin concentration time curve from time 0 (dosing) to 2 hours post-dose (AUC 0-2h, insulin) obtained during OGTT, on days 28 and 42.
AUC 0-2h, insulin was obtained pre-dose (Day -1), at the end of the dosing period (Day 28), and at end-of-study (Day 42). Blood samples were obtained prior to administration of 75 g of oral glucose which was administered as standard glucose beverage after an overnight fast, within 15 minutes. A peripheral blood sample was drawn from a peripheral arm vein prior to the participant consuming the beverage. Additional blood samples were drawn at 30, 60, 90, and 120 minutes after the participant had consumed the glucose beverage for the measurement of glucose, insulin and C-peptide concentrations. Blood glucose concentrations were determined with a glucose analyzer. On Day 28, on which the participant received also investigational product, the OGTT had to be performed prior to consumption of standard meal and administration of investigational product.unit of measurement was microunits×hours per milliliter
Measured: Day 28 and 42
Measurement of insulin sensitivity consisting of the insulin sensitivity index (ISIest) obtained during OGTT.
Stumvoll Index: ISIest was obtained pre-dose (Day -1), at the end of the dosing period (Day 28), and at end-of-study (Day 42). Blood samples were obtained prior to administration of 75 g of oral glucose which was administered as standard glucose beverage after an overnight fast, within 15 minutes. ISI is based on insulin and glucose levels in a fasting state during OGTT and is calculated as: ISI (Matsuda) = 10000/√ G0 X I0 X Gmean X Imean where G0 - fasting plasma glucose (mg/dL) I0 - fasting plasma insulin (milliinternational units (miU)/L) Gmean - mean plasma glucose during OGTT (mg/dL) Imean - mean plasma insulin during OGTT (mIU/L). Unit of measure was (Deciliter × liter)(mg × milliinternational units)
Measured: Up to Day 42
Measurement of insulin sensitivity consisting of the composite whole body sensitivity index (ISIcomposite) obtained during OGTT
ISI is based on insulin and glucose levels in a fasting state during an oral glucose tolerance test (OGTT) and is calculated as: ISI (Matsuda) = 10000/√ G0 X I0 X Gmean X Imean where G0 - fasting plasma glucose (mg/dL) I0 - fasting plasma insulin (mIU/L) Gmean - mean plasma glucose during OGTT (mg/dL) Imean - mean plasma insulin during OGTT (mIU/L). ISIcomposite was obtained pre-dose (Day -1), at the end of the dosing period (Day 28), and at end-of-study (Day 42).
Measured: Up to Day 42
Measurement of insulin sensitivity consisting of the hepatic insulin sensitivity (HIRI) obtained during OGTT
HIRI was obtained pre-dose (Day -1), at the end of the dosing period (Day 28), and at end-of-study (Day 42). Blood samples were obtained prior to administration of 75 g of oral glucose which was administered as standard glucose beverage after an overnight fast, within 15 minutes. A peripheral blood sample was drawn from a peripheral arm vein prior to the participant consuming the beverage. Additional blood samples were drawn at 30, 60, 90, and 120 minutes after the participant had consumed the glucose beverage for the measurement of glucose, insulin and C-peptide concentrations. Blood glucose concentrations were determined with a glucose analyzer. On Day 28, on which the participant received also investigational product, the OGTT had to be performed prior to consumption of standard meal and administration of investigational product. Unit of measure was millimole × hour per liter)×(milliunits × hour per liter [mmol*h/L)*(mU*h/L]
Measured: Up to Day 42
Measurement of insulin sensitivity consisting of the muscular insulin sensitivity (MISI) obtained during OGTT.
MISI was obtained pre-dose (Day -1), at the end of the dosing period (Day 28), and at end-of-study (Day 42). Blood samples were obtained prior to administration of 75 g of oral glucose which was administered as standard glucose beverage after an overnight fast, within 15 minutes. A peripheral blood sample was drawn from a peripheral arm vein prior to the participant consuming the beverage. Additional blood samples were drawn at 30, 60, 90, and 120 minutes after the participant had consumed the glucose beverage for the measurement of glucose, insulin and C-peptide concentrations. Blood glucose concentrations were determined with a glucose analyzer. On Day 28, on which the participant received also investigational product, the OGTT had to be performed prior to consumption of standard meal and administration of investigational product. Unit of measure was milligram per deciliter per minute per milliunits per liter (mg/dL/min/mU/L).
Measured: Up to Day 42
Measurement of insulin sensitivity consisting of the insulin resistance index obtained during OGTT
Measurement of insulin sensitivity consisting of the insulin resistance index obtained during OGTT was not collected.
Measured: Up to Da y 42
Measurement of insulin sensitivity consisting of the beta cell function based on homeostasis model assessment :HOMA-IR, obtained during OGTT
HOMA-IR was obtained pre-dose (Day -1), at the end of the dosing period (Day 28), and at end-of-study (Day 42). Blood samples were obtained prior to administration of 75 g of oral glucose which was administered as standard glucose beverage after an overnight fast, within 15 minutes. A peripheral blood sample was drawn from a peripheral arm vein prior to the participant consuming the beverage. Additional blood samples were drawn at 30, 60, 90, and 120 minutes after the participant had consumed the glucose beverage for the measurement of glucose, insulin and C-peptide concentrations. Blood glucose concentrations were determined with a glucose analyzer. On Day 28, on which the participant received also investigational product, the OGTT had to be performed prior to consumption of standard meal and administration of investigational product.
Measured: Up to Day 42
Measurement of insulin sensitivity consisting of the beta cell function based on homeostasis model assessment : HOMA-%B, obtained during OGTT.
HOMA-%B was obtained pre-dose (Day -1), at the end of the dosing period (Day 28), and at end-of-study (Day 42). Blood samples were obtained prior to administration of 75 g of oral glucose which was administered as standard glucose beverage after an overnight fast, within 15 minutes. A peripheral blood sample was drawn from a peripheral arm vein prior to the participant consuming the beverage. Additional blood samples were drawn at 30, 60, 90, and 120 minutes after the participant had consumed the glucose beverage for the measurement of glucose, insulin and C-peptide concentrations. Blood glucose concentrations were determined with a glucose analyzer. On Day 28, on which the participant received also investigational product, the OGTT had to be performed prior to consumption of standard meal and administration of investigational product.
Measured: Up to Day 42
Measurement of insulin sensitivity consisting of the quantitative insulin sensitivity check index (QUICKI) obtained during OGTT.
QUICKI was obtained pre-dose (Day -1), at the end of the dosing period (Day 28), and at end-of-study (Day 42). Blood samples were obtained prior to administration of 75 g of oral glucose which was administered as standard glucose beverage after an overnight fast, within 15 minutes. A peripheral blood sample was drawn from a peripheral arm vein prior to the participant consuming the beverage. Additional blood samples were drawn at 30, 60, 90, and 120 minutes after the participant had consumed the glucose beverage for the measurement of glucose, insulin and C-peptide concentrations. Blood glucose concentrations were determined with a glucose analyzer. On Day 28, on which the participant received also investigational product, the OGTT had to be performed prior to consumption of standard meal and administration of investigational product.
Measured: Up to Day 42
Determination of sensitivity and metabolic clearance consisting of the insulin sensitive index (SI), Obtained during an hyperinsulinemic euglycemic glucose clamp (HEGC)
A HEGC was carried out at Day 0, 29 and 43. HEGC was performed in participants who developed coagulation abnormalities during the study. Prior to the start of the HEGC procedure, participants were instructed to refrain from alcohol and caffeine for at least 48 hours before each inpatient visit and from exercise at least 24 hours before each inpatient visit. In the evening of the day prior to the HEGC procedure, the participants received a standard dinner at approximately 19:00 hours. Afterwards, the participants remained fasting until the end of the HEGC procedure at approximately 16:00 hours the next day. The HEGC procedure consisted of three phases: Blood glucose adjustment, Insulin infusion step 1, Insulin infusion step 2. The last 60 min of the two insulin infusion steps were defined as "steady state period 1" (SS1) and "steady state period 2" (SS2). unit of measure was Milliliter per minute permeters squared per micro units (mL/min/m2/mcU/mL).
Measured: Up to Day 43
Determination of insulin sensitivity during first (M1) and second (M2) insulin infusion step.
M1 and M2 was carried out at Day 0, 29 and 43. HEGC was performed in participants who developed coagulation abnormalities during the study. Prior to the start of the HEGC procedure, participants were instructed to refrain from alcohol and caffeine for at least 48 hours before each inpatient visit and from exercise at least 24 hours before each inpatient visit. In the evening of the day prior to the HEGC procedure, the participants received a standard dinner at approximately 19:00 hours. Afterwards, the participants remained fasting until the end of the HEGC procedure at approximately 16:00 hours the next day. The HEGC procedure consisted of three phases: Blood glucose adjustment, Insulin infusion step 1, Insulin infusion step 2. The last 60 min of the two insulin infusion steps were defined as "steady state period 1" (SS1) and "steady state period 2" (SS2). Unit of measure was milligrams per minute per kilograms (mg/min/kg).
Measured: Up to Day 43
Insulin sensitivity in relation to mean insulin infusion concentration (M/I1 and M/I2) ,Obtained during HEGC
M/I1 and M/I2 was carried out at Day 0, 29 and 43. HEGC was performed in participants who developed coagulation abnormalities during the study. Prior to the start of the HEGC procedure, participants were instructed to refrain from alcohol and caffeine for at least 48 hours before each inpatient visit and from exercise at least 24 hours before each inpatient visit. In the evening of the day prior to the HEGC procedure, the participants received a standard dinner at approximately 19:00 hours. Afterwards, the participants remained fasting until the end of the HEGC procedure at approximately 16:00 hours the next day. The HEGC procedure consisted of three phases: Blood glucose adjustment, Insulin infusion step 1, Insulin infusion step 2. The last 60 min of the two insulin infusion steps were defined as "steady state period 1" (SS1) and "steady state period 2" (SS2). milligrams per minute per kilograms per microunits per milliliter (mg/min/kg/μU/mL).
Measured: Up to Day 43
Metabolic clearance rate during first and second insulin infusion step (MCR1, MCR2) on Day 29, and 43
MCR1, MCR2 was carried out at Day 0, 29 and 43. HEGC was performed in participants who developed coagulation abnormalities during the study. Prior to the start of the HEGC procedure, participants were instructed to refrain from alcohol and caffeine for at least 48 hours before each inpatient visit and from exercise at least 24 hours before each inpatient visit. In the evening of the day prior to the HEGC procedure, the participants received a standard dinner at approximately 19:00 hours. Afterwards, the participants remained fasting until the end of the HEGC procedure at approximately 16:00 hours the next day. The HEGC procedure consisted of three phases: Blood glucose adjustment, Insulin infusion step 1, Insulin infusion step 2. The last 60 min of the two insulin infusion steps were defined as "steady state period 1" (SS1) and "steady state period 2" (SS2). Unit of measure was kilograms per milliliters per kilo calories (kg/mL/kcal)
Measured: Up to Day 43
Variables of metabolic clearance rate including M1ree and M2ree.
M1ree and M2ree was carried out at Day 0, 29 and 43. HEGC was performed in participants who developed coagulation abnormalities during the study. Prior to the start of the HEGC procedure, participants were instructed to refrain from alcohol and caffeine for at least 48 hours before each inpatient visit and from exercise at least 24 hours before each inpatient visit. In the evening of the day prior to the HEGC procedure, the participants received a standard dinner at approximately 19:00 hours. Afterwards, the participants remained fasting until the end of the HEGC procedure at approximately 16:00 hours the next day. The HEGC procedure consisted of three phases: Blood glucose adjustment, Insulin infusion step 1, Insulin infusion step 2. The last 60 min of the two insulin infusion steps were defined as "steady state period 1" (SS1) and "steady state period 2" (SS2).
Measured: Up to Day 43
Variables of metabolic clearance rate including MCR1ree and MCR2ree .
MCR1ree and MCR2ree was carried out at Day 0, 29 and 43. HEGC was performed in participants who developed coagulation abnormalities during the study. Prior to the start of the HEGC procedure, participants were instructed to refrain from alcohol and caffeine for at least 48 hours before each inpatient visit and from exercise at least 24 hours before each inpatient visit. In the evening of the day prior to the HEGC procedure, the participants received a standard dinner at approximately 19:00 hours. Afterwards, the participants remained fasting until the end of the HEGC procedure at approximately 16:00 hours the next day. The HEGC procedure consisted of three phases: Blood glucose adjustment, Insulin infusion step 1, Insulin infusion step 2. The last 60 min of the two insulin infusion steps were defined as "steady state period 1" (SS1) and "steady state period 2" (SS2).
Measured: Up to Day 43
Variables of metabolic clearance rate including M/I1ree and M/I2ree.
M/I1ree and M/I2ree was carried out at Day 0, 29 and 43. HEGC was performed in participants who developed coagulation abnormalities during the study. Prior to the start of the HEGC procedure, participants were instructed to refrain from alcohol and caffeine for at least 48 hours before each inpatient visit and from exercise at least 24 hours before each inpatient visit. In the evening of the day prior to the HEGC procedure, the participants received a standard dinner at approximately 19:00 hours. Afterwards, the participants remained fasting until the end of the HEGC procedure at approximately 16:00 hours the next day. The HEGC procedure consisted of three phases: Blood glucose adjustment, Insulin infusion step 1, Insulin infusion step 2. The last 60 min of the two insulin infusion steps were defined as "steady state period 1" (SS1) and "steady state period 2" (SS2).
Measured: Up to Day 43
Mean steady state concentration Free fatty acids (FFA), and glycerols
Mean steady state concentration Free fatty acids and glycerols was carried out at Day 0, 29 and 43. HEGC was performed in participants who developed coagulation abnormalities during the study. Prior to the start of the HEGC procedure, participants were instructed to refrain from alcohol and caffeine for at least 48 hours before each inpatient visit and from exercise at least 24 hours before each inpatient visit. In the evening of the day prior to the HEGC procedure, the participants received a standard dinner at approximately 19:00 hours. Afterwards, the participants remained fasting until the end of the HEGC procedure at approximately 16:00 hours the next day. The HEGC procedure consisted of three phases: Blood glucose adjustment, Insulin infusion step 1, Insulin infusion step 2. The last 60 min of the two insulin infusion steps were defined as "steady state period 1" (SS1) and "steady state period 2" (SS2).
Measured: Up to Day 43
Mean C-peptide concentration (mean C-peptideSS1 and C-peptideSS2) obtained during HEGC
Mean C-peptideSS1 and C-peptideSS2 was carried out at Day 0, 29 and 43. HEGC was performed in participants who developed coagulation abnormalities during the study. Prior to the start of the HEGC procedure, participants were instructed to refrain from alcohol and caffeine for at least 48 hours before each inpatient visit and from exercise at least 24 hours before each inpatient visit. In the evening of the day prior to the HEGC procedure, the participants received a standard dinner at approximately 19:00 hours. Afterwards, the participants remained fasting until the end of the HEGC procedure at approximately 16:00 hours the next day. The HEGC procedure consisted of three phases: Blood glucose adjustment, Insulin infusion step 1, Insulin infusion step 2. The last 60 min of the two insulin infusion steps were defined as "steady state period 1" (SS1) and "steady state period 2" (SS2).
Measured: Up to Day 43
Number of participants with all adverse events (AEs) and serious adverse events (SAEs)
Data for number of participants who presented one or more adverse events (serious or non serious) was reported. An AE was defined as any untoward medical occurrence (MO) in a participant temporally associated with the use of a medicinal product (MP), whether or not considered related to the MP and can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease temporally associated with its use. The SAE was any untoward MO that, at any dose, results in death, life threatening, persistent or significant disability/incapacity, results in or prolongs inpatient hospitalization, congenital abnormality or birth defect, that may not be immediately life-threatening or result in death or hospitalization but may jeopardize the participant or may require medical or surgical intervention to prevent one of the other outcomes listed in this definition.
Measured: Up to 28 days
Number of participants with hypoglycemic events
Symptomatic, symptomatic and Severe Symptomatic hypoglycemia definitions were used to analyze and report hypoglycemic events. Symptomatic hypoglycemic episodes were collected from Day 1 to Day 28 with the assistance of participants diaries. Symptomatic hypoglycemia and severe symptomatic hypoglycemia was recorded in CRFs as AEs in all cases.
Measured: Up to Day 28
Number of participants with abnormal Physical examination findings
A complete physical examination, including an ophthalmological examination to rule out diabetic neuropathy, was performed at screening. A symptom-driven, directed physical examination was performed also pre dosing (Day-2), during the dosing period (Day 14 and 27) and after dosing (Day 41). Number of participants with abnormal physical findings was reported.
Measured: Up to Day 41
Change from baseline in Vital signs-systolic blood pressure (SBP) and diastolic blood pressure (DBP).
SBP and DBP were investigated at screening, pre-dosing (Day -2), during the dosing period (Day 1, 14 and 27) and at end of dosing follow-up period/end-of-study (Day 41 and 43).
At Day 1 the vital signs were collected pre-dose (baseline values) and 3 hours post-dose. Day 0 was Baseline and change from Baseline was a value at study day subtracted by value at baseline.
Measured: Up to Day 43
Change from baseline in Vital signs-Heart rate
Heart rate was investigated at screening, pre-dosing (Day -2), during the dosing period (Day 1, 14 and 27) and at end of dosing follow-up period/end-of-study (Day 41 and 43). At Day 1 the vital signs were collected pre-dose (baseline values) and 3 hours post-dose. Day 0 was Baseline and change from Baseline was a value at study day subtracted by value at baseline.
Measured: Up to Day 43
Change from baseline in Vital signs-Respiratory rate
Respiratory rate was investigated at screening, pre-dosing (Day -2), during the dosing period (Day 1, 14 and 27) and at end of dosing follow-up period/end-of-study (Day 41 and 43). At Day 1 the vital signs were collected pre-dose (baseline values) and 3 hours post-dose. Day 0 was Baseline and change from Baseline was a value at study day subtracted by value at baseline.
Measured: Up to Day 43
Change from baseline in Vital signs-Temperature.
Measured: Up to Day 43
Number of participants with abnormal electrocardiogram (ECG) recordings
A 12-lead ECG was recorded at screening, pre-dose (Day -2), at the beginning and end of the dosing period (Day 1 and 27) and at the end of the dosing follow-up period/end-of study (Day 41 and 43). Number of participants with abnormal ECG findings was reported.
Measured: Up to Day 43
Mean hematology parameters including white blood cell (WBC) and platelets count
Blood samples for assessment of WBC and platelet count was collected at screening, Day -1, 14, 28 and 42. Data for mean and standard deviation was presented.
Measured: Up to Day 42
Mean hematology parameters including WBC Differential count and Red cell distribution width (RDW)
Blood samples for assessment of WBC differential count and RDW was collected at screening, Day -1, 14, 28 and 42. Data for mean and standard deviation was presented.
Measured: Up to Day 42
Mean hematology parameters including Hemoglobin (Hb) and Mean corpuscular hemoglobin concentration (MCHC)
Blood samples for assessment of Hb and MCHC was collected at screening, Day -1, 14, 28 and 42. Data for mean and standard deviation was presented.
Measured: Up to Day 42
Mean hematology parameters including: hematocrit count
Blood samples for assessment of hematocrit count was collected at screening, Day -1, 14, 28 and 42. Data for mean and standard deviation was presented.
Measured: Up to Day 42
Mean hematology parameters including corpuscular volume (MCV)
Blood samples for assessment of MCV was collected at screening, Day -1, 14, 28 and 42. Data for mean and standard deviation was presented.
Measured: Up to Day 42
Mean hematology parameters including corpuscular hemoglobin (MCH)
Blood samples for assessment of MCH was collected at screening, Day -1, 14, 28 and 42. Data for mean and standard deviation was presented.
Measured: Up to Day 42
Mean hematology parameters including Red Blood Cells (RBCs) count
Blood samples for assessment of RBC count was collected at screening, Day -1, 14, 28 and 42. Data for mean and standard deviation was presented.
Measured: Up to Day 42
Summary of urinalysis data: PH
Samples for pH assessment were collected at screening, Day -1, 14, 28 and 42. Unscheduled and control assessments were not included in the analysis. Data for mean and standard deviation was presented.
Measured: Up to Day 42
Number of participants with urinalysis
Data for urinalysis was collected at screening, Day -1, 14, 28 and 42. Data for participants with positive and negative urinalysis result was presented. Unscheduled and control assessments were not included in the analysis.
Measured: Up to Day 42
Mean clinical chemistry parameters including calcium, chloride, magnesium, potassium, sodium, bicarbonate, phosphate, glucose, urea and blood urea
Clinical chemistry assessment for calcium, chloride, magnesium, potassium, sodium, bicarbonate, phosphate, glucose, urea ,blood urea was done at screening, Day -1, 14, 28 and 42. Data for mean and standard deviation was presented.
Measured: Up to Day 42
Mean clinical chemistry parameters including direct bilirubin, indirect bilirubin, total bilirubin ,uric acid
Clinical chemistry assessment for direct bilirubin, indirect bilirubin, total bilirubin and uric acid was done at screening, Day -1, 14, 28 and 42. Data for mean and standard deviation was presented.
Measured: Up to Day 42
Mean clinical chemistry parameters including alkaline phosphatase (ALP), Alanine aminotransferase (ALT), Aspartate aminotransaminase (AST), Lactate dehydrogenase (LDH), Creatine kinase
Clinical chemistry assessment for ALP, ALT, AST, LDH and creatine kinase was done at screening, Day -1, 14, 28 and 42. Data for mean and standard deviation was presented.
Measured: Up to Day 42
Mean clinical chemistry parameters including albumin
Clinical chemistry assessment for albumin was done at screening, Day -1, 14, 28 and 42. Data for mean and standard deviation was presented.
Measured: Up to Day 42
Mean clinical chemistry parameters including serum creatinine
Clinical chemistry assessment for serum creatinine was done at screening, Day -1, 14, 28 and 42. Data for mean and standard deviation was presented.
Measured: Up to Day 42
Secondary outcomes (19)
The area under the plasma concentration time curve of SRT2104 from time 0 (dosing) to 24 hours post-dose (AUC 0-24h)
Approximately 90 mL of blood was collected throughout duration of the trial for determination of SRT2104 in plasma. Samples were collected on Days 1 and 28 at pre-dose and at 15 minutes, 30 minutes, 1 hour, 2 hours, 3 hours, 4 hours, 8 hours, 12 hours, and 24 hours and for analysis. Blood samples were drawn via an indwelling cannula on days with multiple samples. unit of measure was nanograms × hours per milliliter ( ng*h/mL)
Measured: Day 1 and 28 at pre-dose, and at 15, 30 minutes,1, 2, 3, 4, 8, 12 and 24 hours
The area under the plasma concentration time curve of SRT2104 from time 0 to infinity (AUC 0-∞)
The AUC (from zero to infinity) represents the total drug exposure over time. Approximately 90 mL of blood was collected throughout duration of the trial for determination of SRT2104 in plasma. Samples were collected on Days 1 and 28 at pre-dose and at 15 minutes, 30 minutes, 1 hour, 2 hours, 3 hours, 4 hours, 8 hours, 12 hours, and 24 hours and for analysis. Blood samples were drawn via an indwelling cannula on days with multiple samples.
Measured: Day 1 and 28 at pre-dose, and at 15, 30 minutes,1, 2, 3, 4, 8, 12 and 24 hours
Mean maximum plasma concentration of SRT2104 (Cmax)
Cmax refers to the maximum (or peak) serum concentration that a drug achieves in a specified compartment or test area of the body after the drug has been administrated and before the administration of a second dose. Approximately 90 mL of blood was collected throughout duration of the trial for determination of SRT2104 in plasma. Samples were collected on Days 1 and 28 at pre-dose and at 15 minutes, 30 minutes, 1 hour, 2 hours, 3 hours, 4 hours, 8 hours, 12 hours, and 24 hours and for analysis. Blood samples were drawn via an indwelling cannula on days with multiple samples.
Measured: Day 1 and 28 at pre-dose, and at 15, 30 minutes,1, 2, 3, 4, 8, 12 and 24 hours
Mean time to maximum plasma SRT2104 concentration (tmax)
tmax is the term used in pharmacokinetics to describe the time at which the Cmax is observed Approximately 90 mL of blood was collected throughout duration of the trial for determination of SRT2104 in plasma. Samples were collected on Days 1 and 28 at pre-dose and at 15 minutes, 30 minutes, 1 hour, 2 hours, 3 hours, 4 hours, 8 hours, 12 hours, and 24 hours and for analysis. Blood samples were drawn via an indwelling cannula on days with multiple samples.
Measured: Day 1 and 28 at pre-dose, and at 15, 30 minutes,1, 2, 3, 4, 8, 12 and 24 hoursDay 1, 2, 28, and 29
Mean Terminal elimination rate constant of SRT2104 (ƛz)
Approximately 90 mL of blood was collected throughout duration of the trial for determination of SRT2104 in plasma. Samples were collected on Days 1 and 28 at pre-dose and at 15 minutes, 30 minutes, 1 hour, 2 hours, 3 hours, 4 hours, 8 hours, 12 hours, and 24 hours and for analysis. Blood samples were drawn via an indwelling cannula on days with multiple samples.
Measured: Day 1 and 28 at pre-dose, and at 15, 30 minutes,1, 2, 3, 4, 8, 12 and 24 hours
Mean terminal plasma elimination half time (t1/2) of SRT2104.
terminal plasma elimination half time (t1/2) was derived from plasma concentration versus time data. (t1/2) was the time required for one half of the total amount of administered drug to be eliminated from the body. Approximately 90 mL of blood was collected throughout duration of the trial for determination of SRT2104 in plasma. Samples were collected on Days 1 and 28 at pre-dose and at 15 minutes, 30 minutes, 1 hour, 2 hours, 3 hours, 4 hours, 8 hours, 12 hours, and 24 hours and for analysis. Blood samples were drawn via an indwelling cannula on days with multiple samples.
Measured: Day 1 and 28 at pre-dose, and at 15, 30 minutes,1, 2, 3, 4, 8, 12 and 24 hours
Energy expenditure (indirect calorimetry) parameters-Oxygen consumption (% O2) at ss1 and ss2
Oxygen consumption was reported using indirect calorimetry. Indirect calorimetry was performed using Quark RMR (COSMED, Rome, Italy) on Day 0, 29 and 43 during the HEGC procedure for four 30-minute sessions at time points -570 min to -540 min (baseline), -40 min to -10 min (end of blood glucose adjustment phase), 210 min to 240 min (end of SS1), 450 min to 480 min (end of SS2).
Measured: Up to Day 43
Energy expenditure (indirect calorimetry) parameters- Carbon dioxide production(CO2) at ss1 and ss2
Carbon dioxide production was reported using indirect calorimetry. Indirect calorimetry was performed using Quark RMR (COSMED, Rome, Italy) on Day 0, 29 and 43 during the HEGC procedure for four 30-minute sessions at time points -570 min to -540 min (baseline), -40 min to -10 min (end of blood glucose adjustment phase), 210 min to 240 min (end of SS1), 450 min to 480 min (end of SS2).
Measured: Up to Day 43
Energy expenditure (indirect calorimetry) parameters-Resting energy expenditure (ree) at ss1 and ss2
Resting energy expenditure was reported using indirect calorimetry. Indirect calorimetry was performed using Quark RMR (COSMED, Rome, Italy) on Day 0, 29 and 43 during the HEGC procedure for four 30-minute sessions at time points -570 min to -540 min (baseline), -40 min to -10 min (end of blood glucose adjustment phase), 210 min to 240 min (end of SS1), 450 min to 480 min (end of SS2).
Measured: Up to Day 43
Energy expenditure (indirect calorimetry) parameters Carbohydrate/glucose oxidation rate (c) at ss1 and ss2
Carbohydrate/glucose oxidation rate was reported using indirect calorimetry. Indirect calorimetry was performed using Quark RMR (COSMED, Rome, Italy) on Day 0, 29 and 43 during the HEGC procedure for four 30-minute sessions at time points -570 min to -540 min (baseline), -40 min to -10 min (end of blood glucose adjustment phase), 210 min to 240 min (end of SS1), 450 min to 480 min (end of SS2).
Measured: Up to Week 43
Energy expenditure (indirect calorimetry) parameters- Fat oxidation rate (f) at ss1 and ss2
Fat oxidation rate was reported using indirect calorimetry. Indirect calorimetry was performed using Quark RMR (COSMED, Rome, Italy) on Day 0, 29 and 43 during the HEGC procedure for four 30-minute sessions at time points -570 min to -540 min (baseline), -40 min to -10 min (end of blood glucose adjustment phase), 210 min to 240 min (end of SS1), 450 min to 480 min (end of SS2).
Measured: up to Day 43
Energy expenditure (indirect calorimetry) parameters-Urinary urea excretion rate (n)
Urinary urea excretion rate was reported using indirect calorimetry. Indirect calorimetry was performed using Quark RMR (COSMED, Rome, Italy) on Day 0, 29 and 43 during the HEGC procedure for four 30-minute sessions at time points -570 min to -540 min (baseline), -40 min to -10 min (end of blood glucose adjustment phase), 210 min to 240 min (end of SS1), 450 min to 480 min (end of SS2).
Measured: Up to Day 43
Energy expenditure (indirect calorimetry) parameters-Oxidative and non- oxidative glucose disposal (VO2 and VCO2) at ss1 and ss2
Oxidative and non- oxidative glucose disposal was reported using indirect calorimetry. Indirect calorimetry was performed using Quark RMR (COSMED, Rome, Italy) on Day 0, 29 and 43 during the HEGC procedure for four 30-minute sessions at time points -570 min to -540 min (baseline), -40 min to -10 min (end of blood glucose adjustment phase), 210 min to 240 min (end of SS1), 450 min to 480 min (end of SS2).
Measured: Up to Day 43
Energy expenditure (indirect calorimetry )parameters-Respiratory exchange ratio (RER)
RER was defined as the ratio between the amount of O2 consumed and CO2 produced in one breath. The parameter was assessed during indirect measure of heat production (calorimetry).
Measured: Up to Day 43
Mean 7-point-blood glucose-AUC
AUC was presented using a 7-point blood glucose profile was performed during the inpatient portion of the study (Day -1, 28 and 42) to measure and record glucose levels throughout the day. Blood glucose concentrations were determined with a glucose analyzer. The first sample was collected early in the morning before the OGTT and standardized meal.
Measured: Up to Day 42
Muscle histology and biomarkers of oxidative capacity -mitochondrial deoxyribonucleic acid (DNA).
Muscle biopsies were obtained pre-dose (Day -1) and at end of the dosing period (Day 28)
Measured: Up to Day 28
Muscle histology and biomarkers of oxidative capacity-Citrase synthase activity (Complex I)
Muscle biopsies were obtained pre-dose (Day -1) and at end of the dosing period (Day 28) Data for mean and standard deviation was presented.
Measured: Up to Days 28
Muscle histology and biomarkers of oxidative capacity-Citrase synthase activity (Complex II/III and IV)
Muscle biopsies were obtained pre-dose (Day -1) and at end of the dosing period (Day 28) Data for mean and standard deviation was presented.
Measured: Up to Day 28
Muscle histology and biomarkers of oxidative capacity-succinate dehydrogenase content Complex I, Complex II/III, complex IV.
Muscle biopsies were obtained pre-dose (Day -1) and at end of the dosing period (Day 28) Data for mean and standard deviation was presented.
Measured: Day 0, 29, and 43
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted23 Nov 2009 (estimated)
- Study start3 Mar 2010
- Primary completion25 Dec 2010
- Study completion25 Dec 2010
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Diabetes Mellitus, Type 2Studies of the same condition, open and under way.
- More trials run by GlaxoSmithKlineThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 2
- Primary purpose
- Other
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Triple blind
- Who is masked
- Participant, Care provider, Investigator
- Enrolment
- 86 participants (actual)
Sponsor and investigators
- Lead sponsor
- GlaxoSmithKline
- Sponsor type
- Industry (pharma, biotech, devices)
- Responsible party
- Sponsor
- Investigators
- GSK Clinical Trials, Study director, GlaxoSmithKline
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01018017
- Sponsor's protocol ID
- 114010
- Status last verified
- Apr 2017
- First submitted
- 19 Nov 2009
- Last updated
- 25 Apr 2017
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Yes: Patient-level data for this study will be made available through www.clinicalstudydatarequest.com following the timelines and process described on this site.
Study at a glance
From the registry record, last updated by the sponsor on 25 Apr 2017. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Phase IIa, Randomized, Placebo-Controlled, Double-Blind Clinical Study to Assess the Safety, Tolerability, and Activity of Oral SRT2104 Capsules Administered for 28 Days to Subjects With Type 2 Diabetes Mellitus
- ClinicalTrials.gov ID
- NCT01018017
- Acronym / sponsor ID
- 114010
- Conditions
- Diabetes Mellitus, Type 2
- Phase
- Phase 2
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 86 participants (actual)
- Lead sponsor
- GlaxoSmithKlineIndustry (pharma, biotech, devices)
- Study start
- 3 Mar 2010 (actual)
- Primary completion
- 25 Dec 2010 (actual)
- Study completion
- 25 Dec 2010 (actual)
- First posted
- 23 Nov 2009 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Randomized, placebo-controlled, parallel-group, double-blind, multiple-dose, activity and safety clinical study of SRT2104 administered orally once daily for 28 consecutive days. This will be an inpatient/outpatient study to assess the safety and pharmacokinetics of SRT2104 in type 2 diabetic male and female subjects on an existing, stable, background metformin therapy. Approximately 80 subjects will be enrolled. Subjects will be evenly randomized to receive SRT2104 2.0 g/day or placebo in the fed state.
Subjects will be required to stay overnight at the study center on Days -2, -1, 0, 1 (optional discharge at investigator's discretion), 27, 28, 41, and 42. During these admissions, pharmacokinetic, biomarker and glycated albumin samples will be collected, and glucose profiling, OGTT, glucose stabilization, hyperinsulinemc euglycemic clamp (HEGC) studies with indirect calorimetry and various other safety and activity procedures will be performed. On Day 1 of the study, subjects will be randomized to receive SRT2104 or placebo. Day 43 will be the last day of the study and subjects will be released. In addition, subjects will be asked to return to the study center on Day 14 for interim safety assessments.
During the dosing period, study personnel will contact subjects by telephone on Days 7 and 21 to conduct a safety assessment. Subjects will be required to monitor their fasting blood glucose and complete a daily diary for the outpatient portion of the study between Days 1 and 28. A follow-up, safety phone call will occur 30 days following their final dose of SRT2104 or placebo (Day 58 of the study) to identify any possible additional adverse events or concomitant medications.
Detailed description
Randomized, placebo-controlled, parallel-group, double-blind, multiple-dose, activity and safety clinical study of SRT2104 administered orally once daily for 28 consecutive days. This will be an inpatient/outpatient study to assess the safety and pharmacokinetics (PK) of SRT2104 in type 2 diabetic (T2D) male and female subjects on an existing, stable, background metformin therapy. Approximately 112 subjects aged 18-65 years, who fulfill the inclusion/exclusion criteria, will be screened for this study to enroll approximately 80 subjects. Subjects will be evenly randomized to receive SRT2104 2.0 g/day or placebo approximately 15 minutes following consumption of a standardized morning meal. Subjects will remain on a fixed dose of test material for all dosing days in the study.
Subjects will sign the informed consent form at the Screening Visit, and will undergo screening assessments to verify eligibility for the study. If eligible and willing to participate, subjects will return to the clinic within 21 days of the Screening Visit to participate in the pre-dosing phase of the study. On Day 1 of the study, subjects will be randomized to receive SRT2104 or placebo. Subjects will be required to stay overnight at the study center on Days -2, -1, 0, 1 (optional discharge at investigator's discretion), 27, 28, 41, and 42 for testing, to assess safety, and to gather required biomarker samples. In addition, subjects will be asked to return to the study center on Day 14 for interim safety assessments. The subject will be telephoned on Days 7 and 21 to assess safety. Subjects will be required to monitor their fasting blood glucose and complete a daily diary for the outpatient portion of the study between Days 1 and 28. A follow-up, safety phone call will occur 30 days following their final dose of SRT2104 or placebo (Day 58 of the study) to identify any possible additional adverse events (AEs) or concomitant medications.
Study design
- Primary purpose
- Other
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Triple blind (participant, care provider, investigator)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| 2.0g SRT2104 | Active comparator | Drug: SRT2104The 2.0g SRT2104 treatment group will be administered eight SRT2104 capsules per day. 2.0g SRT2104 will be administered orally once daily for twenty-eight consecutive days. During non-clinic days, the subject will self-administer the test material approximately 15 minutes following consumption of a standard morning meal at home (200 cc of Ensure Plus®). |
| Placebo | Placebo comparator | Drug: PlaceboThe placebo treatment group will be administered eight placebo capsules per day. Placebo will be administered orally once daily for twenty-eight consecutive days. During non-clinic days, the subject will self-administer the test material approximately 15 minutes following consumption of a standard morning meal at home (200 cc of Ensure Plus®). |
Who may qualify
- Ages
- 18 to 65 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (14 listed)
- Able and willing to provide written informed consent to participate in the study
- Ambulatory male and female subjects (of any race) with T2D within the age range of 18-65 years (inclusive) at the time of screening
- All female subjects must be of non-childbearing potential. All male subjects must agree with their partners to use double-barrier birth control or abstinence while participating in the study and for 12 weeks following the last dose of investigational product. For the purposes of this study, non-childbearing is defined as:
- The subject must be on stable metformin monotherapy for a minimum of 3 months prior to the Screening visit.
- HbA1c of 6.5%-9.5% (inclusive)
Key exclusion criteria (18 listed)
- Any major illness in the 3 months prior to study entry or any significant ongoing chronic medical illness not related to diabetes (e.g., recent myocardial infarction, unstable angina, stroke, or transient ischemic attack) which in the opinion of the principal investigator or medical monitor could risk subject safety or interpretation of the results
- Renal or liver impairment, defined as:
- A positive pre-study Hepatitis B surface antigen or positive Hepatitis C antibody result within 3 months of Screening
- A positive test for HIV antibody
- History of or current gastrointestinal diseases influencing drug absorption as judged by the investigator
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| PlaceboFor placebo product, the SRT2104 drug substance will be replaced by microcrystalline cellulose (Avicel® PH 105) to match the SRT2104 investigational product. | Drug | Placebo |
| SRT2104SRT2104 will be supplied as hard gelatin capsules, with each containing 250mg SRT2104. | Drug | 2.0g SRT2104 |
Primary outcome
The areas under the glucose concentration time curve from time 0 (dosing) to 2 hours post-dose (AUC 0-2h, glucose) obtained during an oral glucose tolerance test (OGTT) on days 28 and 42.
Time frame: Day 28 and Day 42
AUC 0-2h, glucose was obtained pre-dose (Day -1), at the end of the dosing period (Day 28), and at end-of-study (Day 42). Blood samples were obtained prior to administration of 75 g of oral glucose which was administered as standard glucose beverage after an overnight fast, within 15 minutes. A peripheral blood sample was drawn from a peripheral arm vein prior to the participant consuming the beverage. Additional blood samples were drawn at 30, 60, 90, and 120 minutes after the participant had consumed the glucose beverage for the measurement of glucose, insulin and C-peptide concentrations. Blood glucose concentrations were determined with a glucose analyzer. On Day 28, on which the participant received also investigational product, the OGTT had to be performed prior to consumption of standard meal and administration of investigational product.
The areas under the serum insulin concentration time curve from time 0 (dosing) to 2 hours post-dose (AUC 0-2h, insulin) obtained during OGTT, on days 28 and 42.
Time frame: Day 28 and 42
AUC 0-2h, insulin was obtained pre-dose (Day -1), at the end of the dosing period (Day 28), and at end-of-study (Day 42). Blood samples were obtained prior to administration of 75 g of oral glucose which was administered as standard glucose beverage after an overnight fast, within 15 minutes. A peripheral blood sample was drawn from a peripheral arm vein prior to the participant consuming the beverage. Additional blood samples were drawn at 30, 60, 90, and 120 minutes after the participant had consumed the glucose beverage for the measurement of glucose, insulin and C-peptide concentrations. Blood glucose concentrations were determined with a glucose analyzer. On Day 28, on which the participant received also investigational product, the OGTT had to be performed prior to consumption of standard meal and administration of investigational product.unit of measurement was microunits×hours per milliliter
Measurement of insulin sensitivity consisting of the insulin sensitivity index (ISIest) obtained during OGTT.
Time frame: Up to Day 42
Stumvoll Index: ISIest was obtained pre-dose (Day -1), at the end of the dosing period (Day 28), and at end-of-study (Day 42). Blood samples were obtained prior to administration of 75 g of oral glucose which was administered as standard glucose beverage after an overnight fast, within 15 minutes. ISI is based on insulin and glucose levels in a fasting state during OGTT and is calculated as: ISI (Matsuda) = 10000/√ G0 X I0 X Gmean X Imean where G0 - fasting plasma glucose (mg/dL) I0 - fasting plasma insulin (milliinternational units (miU)/L) Gmean - mean plasma glucose during OGTT (mg/dL) Imean - mean plasma insulin during OGTT (mIU/L). Unit of measure was (Deciliter × liter)(mg × milliinternational units)
Measurement of insulin sensitivity consisting of the composite whole body sensitivity index (ISIcomposite) obtained during OGTT
Time frame: Up to Day 42
ISI is based on insulin and glucose levels in a fasting state during an oral glucose tolerance test (OGTT) and is calculated as: ISI (Matsuda) = 10000/√ G0 X I0 X Gmean X Imean where G0 - fasting plasma glucose (mg/dL) I0 - fasting plasma insulin (mIU/L) Gmean - mean plasma glucose during OGTT (mg/dL) Imean - mean plasma insulin during OGTT (mIU/L). ISIcomposite was obtained pre-dose (Day -1), at the end of the dosing period (Day 28), and at end-of-study (Day 42).
Measurement of insulin sensitivity consisting of the hepatic insulin sensitivity (HIRI) obtained during OGTT
Time frame: Up to Day 42
HIRI was obtained pre-dose (Day -1), at the end of the dosing period (Day 28), and at end-of-study (Day 42). Blood samples were obtained prior to administration of 75 g of oral glucose which was administered as standard glucose beverage after an overnight fast, within 15 minutes. A peripheral blood sample was drawn from a peripheral arm vein prior to the participant consuming the beverage. Additional blood samples were drawn at 30, 60, 90, and 120 minutes after the participant had consumed the glucose beverage for the measurement of glucose, insulin and C-peptide concentrations. Blood glucose concentrations were determined with a glucose analyzer. On Day 28, on which the participant received also investigational product, the OGTT had to be performed prior to consumption of standard meal and administration of investigational product. Unit of measure was millimole × hour per liter)×(milliunits × hour per liter [mmol*h/L)*(mU*h/L]
Measurement of insulin sensitivity consisting of the muscular insulin sensitivity (MISI) obtained during OGTT.
Time frame: Up to Day 42
MISI was obtained pre-dose (Day -1), at the end of the dosing period (Day 28), and at end-of-study (Day 42). Blood samples were obtained prior to administration of 75 g of oral glucose which was administered as standard glucose beverage after an overnight fast, within 15 minutes. A peripheral blood sample was drawn from a peripheral arm vein prior to the participant consuming the beverage. Additional blood samples were drawn at 30, 60, 90, and 120 minutes after the participant had consumed the glucose beverage for the measurement of glucose, insulin and C-peptide concentrations. Blood glucose concentrations were determined with a glucose analyzer. On Day 28, on which the participant received also investigational product, the OGTT had to be performed prior to consumption of standard meal and administration of investigational product. Unit of measure was milligram per deciliter per minute per milliunits per liter (mg/dL/min/mU/L).
Measurement of insulin sensitivity consisting of the insulin resistance index obtained during OGTT
Time frame: Up to Da y 42
Measurement of insulin sensitivity consisting of the insulin resistance index obtained during OGTT was not collected.
Measurement of insulin sensitivity consisting of the beta cell function based on homeostasis model assessment :HOMA-IR, obtained during OGTT
Time frame: Up to Day 42
HOMA-IR was obtained pre-dose (Day -1), at the end of the dosing period (Day 28), and at end-of-study (Day 42). Blood samples were obtained prior to administration of 75 g of oral glucose which was administered as standard glucose beverage after an overnight fast, within 15 minutes. A peripheral blood sample was drawn from a peripheral arm vein prior to the participant consuming the beverage. Additional blood samples were drawn at 30, 60, 90, and 120 minutes after the participant had consumed the glucose beverage for the measurement of glucose, insulin and C-peptide concentrations. Blood glucose concentrations were determined with a glucose analyzer. On Day 28, on which the participant received also investigational product, the OGTT had to be performed prior to consumption of standard meal and administration of investigational product.
Measurement of insulin sensitivity consisting of the beta cell function based on homeostasis model assessment : HOMA-%B, obtained during OGTT.
Time frame: Up to Day 42
HOMA-%B was obtained pre-dose (Day -1), at the end of the dosing period (Day 28), and at end-of-study (Day 42). Blood samples were obtained prior to administration of 75 g of oral glucose which was administered as standard glucose beverage after an overnight fast, within 15 minutes. A peripheral blood sample was drawn from a peripheral arm vein prior to the participant consuming the beverage. Additional blood samples were drawn at 30, 60, 90, and 120 minutes after the participant had consumed the glucose beverage for the measurement of glucose, insulin and C-peptide concentrations. Blood glucose concentrations were determined with a glucose analyzer. On Day 28, on which the participant received also investigational product, the OGTT had to be performed prior to consumption of standard meal and administration of investigational product.
Measurement of insulin sensitivity consisting of the quantitative insulin sensitivity check index (QUICKI) obtained during OGTT.
Time frame: Up to Day 42
QUICKI was obtained pre-dose (Day -1), at the end of the dosing period (Day 28), and at end-of-study (Day 42). Blood samples were obtained prior to administration of 75 g of oral glucose which was administered as standard glucose beverage after an overnight fast, within 15 minutes. A peripheral blood sample was drawn from a peripheral arm vein prior to the participant consuming the beverage. Additional blood samples were drawn at 30, 60, 90, and 120 minutes after the participant had consumed the glucose beverage for the measurement of glucose, insulin and C-peptide concentrations. Blood glucose concentrations were determined with a glucose analyzer. On Day 28, on which the participant received also investigational product, the OGTT had to be performed prior to consumption of standard meal and administration of investigational product.
Determination of sensitivity and metabolic clearance consisting of the insulin sensitive index (SI), Obtained during an hyperinsulinemic euglycemic glucose clamp (HEGC)
Time frame: Up to Day 43
A HEGC was carried out at Day 0, 29 and 43. HEGC was performed in participants who developed coagulation abnormalities during the study. Prior to the start of the HEGC procedure, participants were instructed to refrain from alcohol and caffeine for at least 48 hours before each inpatient visit and from exercise at least 24 hours before each inpatient visit. In the evening of the day prior to the HEGC procedure, the participants received a standard dinner at approximately 19:00 hours. Afterwards, the participants remained fasting until the end of the HEGC procedure at approximately 16:00 hours the next day. The HEGC procedure consisted of three phases: Blood glucose adjustment, Insulin infusion step 1, Insulin infusion step 2. The last 60 min of the two insulin infusion steps were defined as "steady state period 1" (SS1) and "steady state period 2" (SS2). unit of measure was Milliliter per minute permeters squared per micro units (mL/min/m2/mcU/mL).
Determination of insulin sensitivity during first (M1) and second (M2) insulin infusion step.
Time frame: Up to Day 43
M1 and M2 was carried out at Day 0, 29 and 43. HEGC was performed in participants who developed coagulation abnormalities during the study. Prior to the start of the HEGC procedure, participants were instructed to refrain from alcohol and caffeine for at least 48 hours before each inpatient visit and from exercise at least 24 hours before each inpatient visit. In the evening of the day prior to the HEGC procedure, the participants received a standard dinner at approximately 19:00 hours. Afterwards, the participants remained fasting until the end of the HEGC procedure at approximately 16:00 hours the next day. The HEGC procedure consisted of three phases: Blood glucose adjustment, Insulin infusion step 1, Insulin infusion step 2. The last 60 min of the two insulin infusion steps were defined as "steady state period 1" (SS1) and "steady state period 2" (SS2). Unit of measure was milligrams per minute per kilograms (mg/min/kg).
Insulin sensitivity in relation to mean insulin infusion concentration (M/I1 and M/I2) ,Obtained during HEGC
Time frame: Up to Day 43
M/I1 and M/I2 was carried out at Day 0, 29 and 43. HEGC was performed in participants who developed coagulation abnormalities during the study. Prior to the start of the HEGC procedure, participants were instructed to refrain from alcohol and caffeine for at least 48 hours before each inpatient visit and from exercise at least 24 hours before each inpatient visit. In the evening of the day prior to the HEGC procedure, the participants received a standard dinner at approximately 19:00 hours. Afterwards, the participants remained fasting until the end of the HEGC procedure at approximately 16:00 hours the next day. The HEGC procedure consisted of three phases: Blood glucose adjustment, Insulin infusion step 1, Insulin infusion step 2. The last 60 min of the two insulin infusion steps were defined as "steady state period 1" (SS1) and "steady state period 2" (SS2). milligrams per minute per kilograms per microunits per milliliter (mg/min/kg/μU/mL).
Metabolic clearance rate during first and second insulin infusion step (MCR1, MCR2) on Day 29, and 43
Time frame: Up to Day 43
MCR1, MCR2 was carried out at Day 0, 29 and 43. HEGC was performed in participants who developed coagulation abnormalities during the study. Prior to the start of the HEGC procedure, participants were instructed to refrain from alcohol and caffeine for at least 48 hours before each inpatient visit and from exercise at least 24 hours before each inpatient visit. In the evening of the day prior to the HEGC procedure, the participants received a standard dinner at approximately 19:00 hours. Afterwards, the participants remained fasting until the end of the HEGC procedure at approximately 16:00 hours the next day. The HEGC procedure consisted of three phases: Blood glucose adjustment, Insulin infusion step 1, Insulin infusion step 2. The last 60 min of the two insulin infusion steps were defined as "steady state period 1" (SS1) and "steady state period 2" (SS2). Unit of measure was kilograms per milliliters per kilo calories (kg/mL/kcal)
Variables of metabolic clearance rate including M1ree and M2ree.
Time frame: Up to Day 43
M1ree and M2ree was carried out at Day 0, 29 and 43. HEGC was performed in participants who developed coagulation abnormalities during the study. Prior to the start of the HEGC procedure, participants were instructed to refrain from alcohol and caffeine for at least 48 hours before each inpatient visit and from exercise at least 24 hours before each inpatient visit. In the evening of the day prior to the HEGC procedure, the participants received a standard dinner at approximately 19:00 hours. Afterwards, the participants remained fasting until the end of the HEGC procedure at approximately 16:00 hours the next day. The HEGC procedure consisted of three phases: Blood glucose adjustment, Insulin infusion step 1, Insulin infusion step 2. The last 60 min of the two insulin infusion steps were defined as "steady state period 1" (SS1) and "steady state period 2" (SS2).
Variables of metabolic clearance rate including MCR1ree and MCR2ree .
Time frame: Up to Day 43
MCR1ree and MCR2ree was carried out at Day 0, 29 and 43. HEGC was performed in participants who developed coagulation abnormalities during the study. Prior to the start of the HEGC procedure, participants were instructed to refrain from alcohol and caffeine for at least 48 hours before each inpatient visit and from exercise at least 24 hours before each inpatient visit. In the evening of the day prior to the HEGC procedure, the participants received a standard dinner at approximately 19:00 hours. Afterwards, the participants remained fasting until the end of the HEGC procedure at approximately 16:00 hours the next day. The HEGC procedure consisted of three phases: Blood glucose adjustment, Insulin infusion step 1, Insulin infusion step 2. The last 60 min of the two insulin infusion steps were defined as "steady state period 1" (SS1) and "steady state period 2" (SS2).
Variables of metabolic clearance rate including M/I1ree and M/I2ree.
Time frame: Up to Day 43
M/I1ree and M/I2ree was carried out at Day 0, 29 and 43. HEGC was performed in participants who developed coagulation abnormalities during the study. Prior to the start of the HEGC procedure, participants were instructed to refrain from alcohol and caffeine for at least 48 hours before each inpatient visit and from exercise at least 24 hours before each inpatient visit. In the evening of the day prior to the HEGC procedure, the participants received a standard dinner at approximately 19:00 hours. Afterwards, the participants remained fasting until the end of the HEGC procedure at approximately 16:00 hours the next day. The HEGC procedure consisted of three phases: Blood glucose adjustment, Insulin infusion step 1, Insulin infusion step 2. The last 60 min of the two insulin infusion steps were defined as "steady state period 1" (SS1) and "steady state period 2" (SS2).
Mean steady state concentration Free fatty acids (FFA), and glycerols
Time frame: Up to Day 43
Mean steady state concentration Free fatty acids and glycerols was carried out at Day 0, 29 and 43. HEGC was performed in participants who developed coagulation abnormalities during the study. Prior to the start of the HEGC procedure, participants were instructed to refrain from alcohol and caffeine for at least 48 hours before each inpatient visit and from exercise at least 24 hours before each inpatient visit. In the evening of the day prior to the HEGC procedure, the participants received a standard dinner at approximately 19:00 hours. Afterwards, the participants remained fasting until the end of the HEGC procedure at approximately 16:00 hours the next day. The HEGC procedure consisted of three phases: Blood glucose adjustment, Insulin infusion step 1, Insulin infusion step 2. The last 60 min of the two insulin infusion steps were defined as "steady state period 1" (SS1) and "steady state period 2" (SS2).
Mean C-peptide concentration (mean C-peptideSS1 and C-peptideSS2) obtained during HEGC
Time frame: Up to Day 43
Mean C-peptideSS1 and C-peptideSS2 was carried out at Day 0, 29 and 43. HEGC was performed in participants who developed coagulation abnormalities during the study. Prior to the start of the HEGC procedure, participants were instructed to refrain from alcohol and caffeine for at least 48 hours before each inpatient visit and from exercise at least 24 hours before each inpatient visit. In the evening of the day prior to the HEGC procedure, the participants received a standard dinner at approximately 19:00 hours. Afterwards, the participants remained fasting until the end of the HEGC procedure at approximately 16:00 hours the next day. The HEGC procedure consisted of three phases: Blood glucose adjustment, Insulin infusion step 1, Insulin infusion step 2. The last 60 min of the two insulin infusion steps were defined as "steady state period 1" (SS1) and "steady state period 2" (SS2).
Number of participants with all adverse events (AEs) and serious adverse events (SAEs)
Time frame: Up to 28 days
Data for number of participants who presented one or more adverse events (serious or non serious) was reported. An AE was defined as any untoward medical occurrence (MO) in a participant temporally associated with the use of a medicinal product (MP), whether or not considered related to the MP and can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease temporally associated with its use. The SAE was any untoward MO that, at any dose, results in death, life threatening, persistent or significant disability/incapacity, results in or prolongs inpatient hospitalization, congenital abnormality or birth defect, that may not be immediately life-threatening or result in death or hospitalization but may jeopardize the participant or may require medical or surgical intervention to prevent one of the other outcomes listed in this definition.
Number of participants with hypoglycemic events
Time frame: Up to Day 28
Symptomatic, symptomatic and Severe Symptomatic hypoglycemia definitions were used to analyze and report hypoglycemic events. Symptomatic hypoglycemic episodes were collected from Day 1 to Day 28 with the assistance of participants diaries. Symptomatic hypoglycemia and severe symptomatic hypoglycemia was recorded in CRFs as AEs in all cases.
Number of participants with abnormal Physical examination findings
Time frame: Up to Day 41
A complete physical examination, including an ophthalmological examination to rule out diabetic neuropathy, was performed at screening. A symptom-driven, directed physical examination was performed also pre dosing (Day-2), during the dosing period (Day 14 and 27) and after dosing (Day 41). Number of participants with abnormal physical findings was reported.
Change from baseline in Vital signs-systolic blood pressure (SBP) and diastolic blood pressure (DBP).
Time frame: Up to Day 43
SBP and DBP were investigated at screening, pre-dosing (Day -2), during the dosing period (Day 1, 14 and 27) and at end of dosing follow-up period/end-of-study (Day 41 and 43). At Day 1 the vital signs were collected pre-dose (baseline values) and 3 hours post-dose. Day 0 was Baseline and change from Baseline was a value at study day subtracted by value at baseline.
Change from baseline in Vital signs-Heart rate
Time frame: Up to Day 43
Heart rate was investigated at screening, pre-dosing (Day -2), during the dosing period (Day 1, 14 and 27) and at end of dosing follow-up period/end-of-study (Day 41 and 43). At Day 1 the vital signs were collected pre-dose (baseline values) and 3 hours post-dose. Day 0 was Baseline and change from Baseline was a value at study day subtracted by value at baseline.
Change from baseline in Vital signs-Respiratory rate
Time frame: Up to Day 43
Respiratory rate was investigated at screening, pre-dosing (Day -2), during the dosing period (Day 1, 14 and 27) and at end of dosing follow-up period/end-of-study (Day 41 and 43). At Day 1 the vital signs were collected pre-dose (baseline values) and 3 hours post-dose. Day 0 was Baseline and change from Baseline was a value at study day subtracted by value at baseline.
Change from baseline in Vital signs-Temperature.
Time frame: Up to Day 43
Number of participants with abnormal electrocardiogram (ECG) recordings
Time frame: Up to Day 43
A 12-lead ECG was recorded at screening, pre-dose (Day -2), at the beginning and end of the dosing period (Day 1 and 27) and at the end of the dosing follow-up period/end-of study (Day 41 and 43). Number of participants with abnormal ECG findings was reported.
Mean hematology parameters including white blood cell (WBC) and platelets count
Time frame: Up to Day 42
Blood samples for assessment of WBC and platelet count was collected at screening, Day -1, 14, 28 and 42. Data for mean and standard deviation was presented.
Mean hematology parameters including WBC Differential count and Red cell distribution width (RDW)
Time frame: Up to Day 42
Blood samples for assessment of WBC differential count and RDW was collected at screening, Day -1, 14, 28 and 42. Data for mean and standard deviation was presented.
Mean hematology parameters including Hemoglobin (Hb) and Mean corpuscular hemoglobin concentration (MCHC)
Time frame: Up to Day 42
Blood samples for assessment of Hb and MCHC was collected at screening, Day -1, 14, 28 and 42. Data for mean and standard deviation was presented.
Mean hematology parameters including: hematocrit count
Time frame: Up to Day 42
Blood samples for assessment of hematocrit count was collected at screening, Day -1, 14, 28 and 42. Data for mean and standard deviation was presented.
Mean hematology parameters including corpuscular volume (MCV)
Time frame: Up to Day 42
Blood samples for assessment of MCV was collected at screening, Day -1, 14, 28 and 42. Data for mean and standard deviation was presented.
Mean hematology parameters including corpuscular hemoglobin (MCH)
Time frame: Up to Day 42
Blood samples for assessment of MCH was collected at screening, Day -1, 14, 28 and 42. Data for mean and standard deviation was presented.
Mean hematology parameters including Red Blood Cells (RBCs) count
Time frame: Up to Day 42
Blood samples for assessment of RBC count was collected at screening, Day -1, 14, 28 and 42. Data for mean and standard deviation was presented.
Summary of urinalysis data: PH
Time frame: Up to Day 42
Samples for pH assessment were collected at screening, Day -1, 14, 28 and 42. Unscheduled and control assessments were not included in the analysis. Data for mean and standard deviation was presented.
Number of participants with urinalysis
Time frame: Up to Day 42
Data for urinalysis was collected at screening, Day -1, 14, 28 and 42. Data for participants with positive and negative urinalysis result was presented. Unscheduled and control assessments were not included in the analysis.
Mean clinical chemistry parameters including calcium, chloride, magnesium, potassium, sodium, bicarbonate, phosphate, glucose, urea and blood urea
Time frame: Up to Day 42
Clinical chemistry assessment for calcium, chloride, magnesium, potassium, sodium, bicarbonate, phosphate, glucose, urea ,blood urea was done at screening, Day -1, 14, 28 and 42. Data for mean and standard deviation was presented.
Mean clinical chemistry parameters including direct bilirubin, indirect bilirubin, total bilirubin ,uric acid
Time frame: Up to Day 42
Clinical chemistry assessment for direct bilirubin, indirect bilirubin, total bilirubin and uric acid was done at screening, Day -1, 14, 28 and 42. Data for mean and standard deviation was presented.
Mean clinical chemistry parameters including alkaline phosphatase (ALP), Alanine aminotransferase (ALT), Aspartate aminotransaminase (AST), Lactate dehydrogenase (LDH), Creatine kinase
Time frame: Up to Day 42
Clinical chemistry assessment for ALP, ALT, AST, LDH and creatine kinase was done at screening, Day -1, 14, 28 and 42. Data for mean and standard deviation was presented.
Mean clinical chemistry parameters including albumin
Time frame: Up to Day 42
Clinical chemistry assessment for albumin was done at screening, Day -1, 14, 28 and 42. Data for mean and standard deviation was presented.
Mean clinical chemistry parameters including serum creatinine
Time frame: Up to Day 42
Clinical chemistry assessment for serum creatinine was done at screening, Day -1, 14, 28 and 42. Data for mean and standard deviation was presented.
19 secondary outcomes
The area under the plasma concentration time curve of SRT2104 from time 0 (dosing) to 24 hours post-dose (AUC 0-24h)
Time frame: Day 1 and 28 at pre-dose, and at 15, 30 minutes,1, 2, 3, 4, 8, 12 and 24 hours
The area under the plasma concentration time curve of SRT2104 from time 0 to infinity (AUC 0-∞)
Time frame: Day 1 and 28 at pre-dose, and at 15, 30 minutes,1, 2, 3, 4, 8, 12 and 24 hours
Mean maximum plasma concentration of SRT2104 (Cmax)
Time frame: Day 1 and 28 at pre-dose, and at 15, 30 minutes,1, 2, 3, 4, 8, 12 and 24 hours
Mean time to maximum plasma SRT2104 concentration (tmax)
Time frame: Day 1 and 28 at pre-dose, and at 15, 30 minutes,1, 2, 3, 4, 8, 12 and 24 hoursDay 1, 2, 28, and 29
Mean Terminal elimination rate constant of SRT2104 (ƛz)
Time frame: Day 1 and 28 at pre-dose, and at 15, 30 minutes,1, 2, 3, 4, 8, 12 and 24 hours
Mean terminal plasma elimination half time (t1/2) of SRT2104.
Time frame: Day 1 and 28 at pre-dose, and at 15, 30 minutes,1, 2, 3, 4, 8, 12 and 24 hours
Energy expenditure (indirect calorimetry) parameters-Oxygen consumption (% O2) at ss1 and ss2
Time frame: Up to Day 43
Energy expenditure (indirect calorimetry) parameters- Carbon dioxide production(CO2) at ss1 and ss2
Time frame: Up to Day 43
Energy expenditure (indirect calorimetry) parameters-Resting energy expenditure (ree) at ss1 and ss2
Time frame: Up to Day 43
Energy expenditure (indirect calorimetry) parameters Carbohydrate/glucose oxidation rate (c) at ss1 and ss2
Time frame: Up to Week 43
Energy expenditure (indirect calorimetry) parameters- Fat oxidation rate (f) at ss1 and ss2
Time frame: up to Day 43
Energy expenditure (indirect calorimetry) parameters-Urinary urea excretion rate (n)
Time frame: Up to Day 43
Energy expenditure (indirect calorimetry) parameters-Oxidative and non- oxidative glucose disposal (VO2 and VCO2) at ss1 and ss2
Time frame: Up to Day 43
Energy expenditure (indirect calorimetry )parameters-Respiratory exchange ratio (RER)
Time frame: Up to Day 43
Mean 7-point-blood glucose-AUC
Time frame: Up to Day 42
Muscle histology and biomarkers of oxidative capacity -mitochondrial deoxyribonucleic acid (DNA).
Time frame: Up to Day 28
Muscle histology and biomarkers of oxidative capacity-Citrase synthase activity (Complex I)
Time frame: Up to Days 28
Muscle histology and biomarkers of oxidative capacity-Citrase synthase activity (Complex II/III and IV)
Time frame: Up to Day 28
Muscle histology and biomarkers of oxidative capacity-succinate dehydrogenase content Complex I, Complex II/III, complex IV.
Time frame: Day 0, 29, and 43
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 25 Apr 2017.
- Researchers can use this site to request access to anonymised patient level data and/or supporting documents from clinical studies to conduct further research.Link provided by the sponsor.
- Individual participant dataSharing planned: Yes. Patient-level data for this study will be made available through www.clinicalstudydatarequest.com following the timelines and process described on this site.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
GSK Clinical Trials study director
GlaxoSmithKline
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 2 study testing SRT2104 in people with Diabetes Mellitus, Type 2, run by GlaxoSmithKline at 1 site in Germany.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 14 inclusion and 18 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 25 Apr 2017. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Germany. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
The areas under the glucose concentration time curve from time 0 (dosing) to 2 hours post-dose (AUC 0-2h, glucose) obtained during an oral glucose tolerance test (OGTT) on days 28 and 42. (time frame: Day 28 and Day 42). The study lists 41 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 25 Apr 2017.