PsoriasisPhase 2NCT01154101
Study of the Clinical Activity, Safety, and Tolerability of SRT2104 in Subjects With Moderate to Severe Plaque-Type Psoriasis
A Phase 2 study testing SRT2104 in people with Psoriasis, run by Sirtris, a GSK Company at 8 sites in United States.
Trial summary
This double-blind, placebo-controlled study will be conducted at 5 study centers in the United States. Approximately 30 subjects with moderate to severe plaque-type psoriasis will take part. Read more about this study
- Who is it for?
- Ages 18 to 80 years
- Conditions the study is for
- Psoriasis
- 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
- 40 participants
- Where
- 8 sitesUnited States
- Study dates
- 7 Jun 2010to 9 Nov 2011
- Phase
- Phase 2
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
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 80 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
- Be male or female aged 18 to 80 years (inclusive)
- Have a diagnosis of clinically confirmed, stable (without recent documented flare within 30 days prior to the Screening Visit), plaque-type psoriasis for at least 6 months involving ≥10% of body surface area
- Have a baseline PASI of ≥10
- Be a candidate for systemic psoriasis therapy, in the opinion of the investigator
- If a female subject of child-bearing potential, be willing to use reliable contraception for the duration of the study, through the 30 day safety follow up telephone call
- Be willing and able to comply with the protocol for the duration of the study
Who cannot join
- Has received systemic non-biologic psoriasis therapy or PUVA phototherapy within 4 weeks prior to the Screening Visit, or had topical psoriasis treatment or UVB phototherapy within 2 weeks prior to the Screening Visit
- Has received previous treatment with biologic agents within 5 drug half-lives (or within 3 months if half-life is unknown) prior to the first dose of SRT2104
- Has received a live vaccination within 4 weeks prior to the Screening Visit or intends to have a live vaccination during the course of the study
- Use of any other non-psoriatic prescription drug therapy, with the exception of any prescription medication administered at a stable dose for at least 6 weeks prior to the Screening Visit; however, the administration of proton pump inhibitors during the study dosing period is prohibited
- Use of any dietary or herbal supplements, with the exception of those administered at a stable dose for at least 6 weeks prior to the Screening Visit
- Has received any investigational drug or experimental procedure within 30 days prior to the first dose of SRT2104
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- Has an active infection (e.g., sepsis, pneumonia, abscess, etc.) or be at high risk of developing an infection, in the opinion of the investigator, prior to the first dose of SRT2104
- Has a history of a positive tuberculosis test or a positive tuberculosis test at the Screening Visit that cannot be attributed to a prior BCG inoculation
- Has a positive pre-study Hepatitis B surface antigen or positive Hepatitis C antibody result within 3 months of the Screening Visit
- Has a positive test for HIV antibody
- Has an abnormal chest x-ray at the Screening Visit which, in the opinion of the investigator, would preclude entry into the trial
- Has a 12-lead electrocardiogram (ECG) with changes considered to be clinically significant on medical review including prolonged QTc intervals as defined below:
- QTcB ≥450 msec (based on single or average QTc value of triplicate ECGs obtained over a brief period)
- QTcB ≥480 msec in subjects with Bundle Branch Block
- Has 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 or
- Alkaline phosphatase and bilirubin > 1.5xULN (an isolated bilirubin >1.5xULN is acceptable if bilirubin is fractionated and direct bilirubin is <35%)
- Has active neoplastic disease or history of neoplastic disease within 5 years of study entry (except for basal or squamous cell carcinoma of the skin, or carcinoma in situ which have been definitively treated with standard of care approaches)
- Is pregnant or breast-feeding. Confirmation that a female subject is not pregnant must be established by negative pregnancy tests at Screening and Day 1
- Has a significant history of alcoholism or drug/chemical abuse, or consumes more than 3 standard units/day of alcohol. A standard unit of alcohol is defined as 250 mL of beer, 25 mL of spirit, or 125 mL of wine
- 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
- Has an acute or chronic illness which, in the opinion of the investigator, could pose a threat or harm to the subject
Trial locations and contacts
8 sites in 1 country.
8 sites in 1 country
United States8 sites
GSK Investigational Site
Dallas, Texas, 75246
GSK Investigational Site
Johnston, Rhode Island, 02919
GSK Investigational Site
New York, New York, 10016
GSK Investigational Site
New York, New York, 10065
GSK Investigational Site
Philadelphia, Pennsylvania, 19103
GSK Investigational Site
Portland, Oregon, 97223
GSK Investigational Site
Seattle, Washington, 98101
GSK Investigational Site
St Louis, Missouri, 63117
About this study
Official title: A Randomized, Double-Blind, Placebo-Controlled, Phase IIa Study of the Clinical Activity, Safety, and Tolerability of SRT2104 in Subjects With Moderate to Severe Plaque-Type Psoriasis
This double-blind, placebo-controlled study will be conducted at 5 study centers in the United States. Approximately 30 subjects with moderate to severe plaque-type psoriasis will take part. The study will consist of a screening period of up to 21 days, a 12-week treatment period with 7 on-treatment clinic visits (approximately one every 2 weeks) and a post-dosing follow-up clinic visit approximately 30 days after the last dose of study drug is taken.
Subjects will be randomized to receive either 250mg, 500mg or 1000mg of study drug or placebo. Study drug will be taken by mouth on a full stomach, every day for 84 days.
Read more
Vital signs, clinical laboratory results (hematology, chemistry, and urinalysis), ECGs and physical examinations will be assessed at periodic intervals from Day 1 through Day 84.
A skin biopsy will be taken at the beginning and the end of the dosing period to evaluate any effects of the study drug on psoriasis. Investigators will perform other psoriasis evaluations (including the Psoriasis Area and Severity Index [PASI] and the Physician's Global Assessment [PGA] at 5 different times throughout the study to quantify the effects of SRT2104 on psoriasis activity.
Subjects will complete questionnaires throughout the study, to document their sense of well-being and mood at 4 different times during the study.
Five blood samples will be obtained at different timepoints during the study, to measure the amount of SRT2104 in the body.
- Conditions
- Psoriasis
- Being tested
- Placebo, SRT2104
- Medical subject headings
- Psoriasis
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
PlaceboDrug
For the placebo product, the SRT2104 drug substance will be replaced by microcrystalline cellulose (Avicel® PH 105) to match the SRT2104 investigational product.
SRT2104Drug
SRT2104 drug substance is a new chemical entity which is supplied as a fine, yellowish/amber powder. The SRT2104 investigational product is prepared by packing 250 mg of micronized SRT2104 powder with no additional additives into a size 00 opaque, hard gelatin capsule, packaged in dosing bottles containing a single daily dose.
| Study group | Role | What they receive |
|---|---|---|
| Cohort 2 - 500mg SRT2104/placebo dose group | Active comparator | 10 subjects will be randomized 4:1 (SRT2104: placebo) in each of 3 treatment arms (250mg, 500mg, or 1000mg).
Cohort 2 will commence after Cohort 1 has completed 28 consecutive days of dosing, followed by the completion of a safety review by an Independent Safety Review Committee.
Cohort 2 will be administered at approximately the same time every day, approximately 15 minutes following the consumption of food. Subjects must wait at least 1 hour after dosing before consuming additional calories. Dietary recommendations for the meal that precedes dosing will be provided to the study subjects by the clinical site staff. Receives: Drug: Placebo; Drug: SRT2104 |
| Cohort 3 - 1000mg SRT2104/placebo dose group | Active comparator | 10 subjects will be randomized 4:1 (SRT2104: placebo) in each of 3 treatment arms (250mg, 500mg, or 1000mg).
Cohort 3 will commence after Cohort 2 has completed 28 consecutive days of dosing, followed by the completion of a safety review by an Independent Safety Review Committee.
Cohort 3 will be administered four SRT2104 capsules at approximately the same time every day, approximately 15 minutes following the consumption of food. Subjects must wait at least 1 hour after dosing before consuming additional calories. Dietary recommendations for the meal that precedes dosing will be provided to the study subjects by the clinical site staff. Receives: Drug: Placebo; Drug: SRT2104 |
| Cohort 1 - 250mg SRT2104/placebo dose group | Active comparator | 10 subjects will be randomized 4:1 (SRT2104: placebo) in each of 3 treatment arms (250mg, 500mg, or 1000mg).
Cohort 1 will be administered at approximately the same time every day, approximately 15 minutes following the consumption of food. Subjects must wait at least 1 hour after dosing before consuming additional calories. Dietary recommendations for the meal that precedes dosing will be provided to the study subjects by the clinical site staff.
Dosing for Cohort 2 will not commence until Cohort 1 has completed 28 consecutive days of dosing, followed by the completion of a safety review by an Independent Safety Review Committee. Receives: Drug: Placebo; Drug: SRT2104 |
What is being measured
The primary outcome is the main question the study is designed to answer.
Assessment of Clinical Activity by Improvement Score (Using Krueger Criteria): Number of Participants With Good or Excellent Improvement Score Based on Histological Assessments of Skin Biopsies After 12 Weeks of Exposure
According to the Krueger criteria, improvement score is classified as Good improvement defined as reduction in epidermal thickness by at least 30% normalized keratinocyte differentiation but most keratinocytes still express K16. Excellent improvement defined as reduction in epidermal thickness to normal or almost normal normalized keratinocyte differentiation and absent keratinocyte expression of K16. No improvement defined as no improvement in epidermal thickness keratinocyte differentiation or K16 expression on keratinocytes. A binomial response was defined for each participant according to whether the participant had an improvement score of "good or excellent improvement" (response=1) or not (response=0). Number of participants with good or excellent improvement score are presented.
Measured: 12 weeks
Number of Participants With Any Adverse Events (AE) and Serious Adverse Events (SAE)
An AE is any untoward medical occurrence in a participant or clinical investigation participant, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease (new or exacerbated) temporally associated with the use of a medicinal product. For marketed medicinal products, this also includes failure to produce expected benefits (i.e., lack of efficacy), abuse or misuse. SAE is any untoward medical occurrence that, at any dose results in death, is life-threatening, requires hospitalization or prolongation of existing hospitalization, results in disability/incapacity, or is a congenital anomaly/birth defect or is medically significant. The AE category in the data table includes participants who experienced serious or non-serious adverse events or both.
Measured: Up to Follow-up (Day 114)
Number of Participants With Hematology and Coagulation Abnormalities of Potential Clinical Concern
Hematology parameters included hemoglobin, hematocrit, red blood cell count, red cell distribution width, mean corpuscular volume, mean corpuscular hemoglobin, mean corpuscular hemoglobin concentration, platelets, white blood cell count and complete white blood cell count differential. Coagulation parameters included activated partial thromboplastin time and prothrombin time/international normalized ratio. The potential clinical concern range for hematology parameters were: white blood cell count (low: <0.67x10^9/Liter x lower limit of normal [LLN] and high: >1.82x10^9/L x upper limit of normal [ULN]), neutrophil count: (low: <0.83x10^9/Liter x LLN), hemoglobin (low: <0.85 gram/Liter x LLN and high: >1.03 gram/Liter x ULN for males and >1.13 gram/Liter x ULN for females), hematocrit with units ratio (high: >1.02 x ULN for males and >1.17 x ULN for females), platelet count (low: <0.67x10^9/Liter x LLN and high >1.57x10^9/Liter x ULN) and lymphocytes (low: <0.81x10^9/Liter x LLN).
Measured: Up to Follow-up (Day 114)
Number of Participants With Clinical Chemistry Abnormalities of Potential Clinical Importance
The potential clinical concern range for clinical chemistry parameters were: Albumin:(low: <0.86 gram/Liter x LLN), Calcium:(low: <0.91 millimol/Liter [mmol/L] x LLN and high: >1.06 mmol/L x ULN), Creatinine: (high: >1.3 mmol /L x ULN), Glucose: (low: <0.71 mmol/L x LLN, high: >1.41 mmol/L x ULN), Magnesium: (low: <0.63 mmol/L x LLN, high: >1.03 mmol/L x ULN), Phosphorus: (low: <0.8 mmol/L x LLN, high: >1.14 mmol/L x ULN), Sodium: (low: <0.96 mmol/L x LLN, high: >1.03 mmol/L x ULN), Urea: (high: >1.5 mmol/L x ULN), Gamma glutamyl transferase: (high: >2 International units per L x ULN), Total bilirubin (high: 1.5 x ULN), both alanine amino transferase and aspartate amino transferase (high:≥ 2x ULN Units/L) and Bicarbonate: (low: <18 mmol/L and high: >32 mmol/L). Number of participants with clinical chemistry abnormalities of potential clinical importance are presented.
Measured: Up to Follow-up (Day 114)
Number of Participants With Abnormal Electrocardiogram (ECG) Values
12-lead ECG was performed in the rested state with the participant in the supine position with ECG leads on for at least 5 minutes prior to ECG recording. ECGs included PR (PQ), QRS, QT and QT corrected by Bazett's formula (QTcB), QT corrected by Fridericia's formula (QTcF) intervals. Identification of any conduction abnormalities were recorded in the eCRF. If a participant's QTc intervals were prolonged, then the ECG was done in triplicate with results reported as an average of the three ECGs. Number of participants with abnormal electrocardiogram (ECG) values are presented.
Measured: Up to Follow-up (Day 114)
Number of Participants With Vital Signs of Potential Clinical Importance
Vital sign assessments included measurements of resting heart rate and blood pressure. Potential clinical concern range for systolic blood pressure: <85 and >160 millimeter of mercury (mmHg), for diastolic: <45 and >100 mmHg and heart rate: <40 and >110 beats per minute. Number of participants with vital signs of potential clinical importance are presented.
Measured: Up to Follow-up (Day 114)
Secondary outcomes (6)
Number of Participants With Clinical Activity in Psoriasis Area and Severity Index (PASI) Score After 4, 8, and 12 Weeks of Exposure
PASI score was determined by evaluation of body surface area (BSA) covered by plaque psoriasis in 4 areas (head/neck, arms, trunk and legs with area score of 0.1, 0.2, 0.3 and 0.4 respectively). This test included combination of both degree of involvement (assessed as per the % of affected body area using a 7-point scale such that 0=0% involvement, 1=1-9%, 2=10-29%, 3=30-49%, 4=50-69%, 5=70-89% and 6=90-100%) and severity (evaluated individually using a 5-point scale that ranged as 0=No evidence of sign, 1=slight evidence, 2=moderate evidence, 3=marked evidence and 4=very marked, most severe evidence of sign) of erythema, induration and desquamation in each of the same 4 areas. PASI score ranges from 0 (no psoriasis) to 72 (worse psoriasis). Final PASI=(sum of severity score for each area)x(% body affected score x area score).
Measured: Weeks 4, 8 and 12
Summary of Physician's Global Assessment (PGA) Score After 4, 8 and 12 Weeks of Exposure
The severity of psoriatic lesions over the whole body were assessed by the investigator using the PGA scoring system. A 0 to 6 point rating scale was used, as follows: 0 = Clear (no signs of psoriasis), 1 = Almost clear (slight elevation, scale and/or erythema), 2 = Mild (mild plaque elevation, scale and/or erythema), 3 = Mild to moderate (mild plaque elevation with moderate erythema and/or scale), 4 = Moderate (moderate plaque elevation, scale and/or erythema), 5 = Moderate to severe (marked plaque elevation, scale and/or erythema), 6 = Severe (very marked plaque elevation, scale and/or erythema). Higher scores indicated worse psoriasis. Participants in the SRT2104 0.25 g dose group inadvertently used an incorrect version of the PGA scale and thus do not have PGA data available. Participants in the SRT2104 0.25 g dose group inadvertently used an incorrect version of the PGA scale and thus do not have PGA data available.
Measured: Weeks 4, 8 and 12
Area Under Curve (AUC) of 12 Weeks of Dosing With 0.25 g, 0.5 g and 1.0 g SRT2104 in the Fed State in Participants
A total of five blood samples (6 milliliter [mL] each) were obtained from each participant up to Week 12, for determination of SRT2104 plasma concentrations. No two samples were separated by less than an hour. One pre-dose sample was collected prior to taking study medication (30 minutes or less before dosing) at any Visit 4 (Week 4), Visit 6 (Week 8) or Visit 8 (Week 12). A single pharmacokinetic (PK) sample was collected in the time interval of 0.5 to 2 hours post-dose and also 3 to 6 hours post-dose at any Visit 4 (Week 4), Visit 6 (Week 8) or Visit 8 (Week 12). Two PK samples were collected in the time interval of 6 to 22 hours post dose at any Visit 4 (Week 4), Visit 6 (Week 8) or Visit 8 (Week 12).
Measured: Pre-dose (30 minutes or less before dosing: 1 sample), 0.5 to 2 hours and 3 to 6 hours post-dose (1 sample), 6 to 22 hours post-dose (2 samples) up to Week 12
Maximum Plasma Concentration (Cmax) of 12 Weeks of Dosing With 250 Milligrams (mg), 500 mg and 1000 mg SRT2104 in the Fed State in Participants
A total of five blood samples (6 mL each) were obtained from each participant at any Visit 4 (Day 28 or Week 4), Visit 6 (Day 56 or Week 8) or Visit 8 (Day 84 or Week 12), for determination of SRT2104 plasma concentrations. No two samples were separated by less than an hour. One pre-dose sample was collected prior to taking study medication (30 minutes or less before dosing) at any Visit 4 (Day 28 or Week 4), Visit 6 (Day 56 or Week 8) or Visit 8 (Day 84 or Week 12). A single pharmacokinetic (PK) sample was collected in the time interval of 0.5 to 2 hours post-dose and also 3 to 6 hours post-dose at any Visit 4 (Day 28 or Week 4), Visit 6 (Day 56 or Week 8) or Visit 8 (Day 84 or Week 12). Two PK samples were collected in the time interval of 6 to 22 hours post dose at any Visit 4 (Day 28 or Week 4), Visit 6 (Day 56 or Week 8) or Visit 8 (Day 84 or Week 12).
Measured: One sample: Pre-dose (30 minutes or less before dosing), One sample: 0.5 to 2 hours post-dose and 3 to 6 hours post-dose and 2 samples 6 to 22 hours post dose, at any Visit 4 (Day 28 or Week 4), Visit 6 (Day 56 or Week 8) or Visit 8 (Day 84 or Week 12)
Change From Baseline in Fibroblast Growth Factor 21 (FGF21) as an Indicator of the Pharmacodynamic Effects of SRT2104
The pharmacodynamic effects of SRT2104 was measured by biomarkers of psoriatic disease activity and/or sirtuin pathway activation (hsCRP and FGF21) in blood samples. Baseline was Day 1. Change from Baseline was calculated by subtracting Baseline values from post-Baseline values.
Measured: Baseline (Day 1) and Days 28, 56 and 84
Change From Baseline in High-sensitivity C-reactive Protein (hsCRP) as an Indicator of the Pharmacodynamic Effects of SRT2104
The pharmacodynamic effects of SRT2104 was measured by biomarkers of psoriatic disease activity and/or sirtuin pathway activation (hsCRP and FGF21) in blood samples. Baseline was Day 1. Change from Baseline was calculated by subtracting Baseline values from post-Baseline values.
Measured: Baseline (Day 1) and Days 28, 56 and 84
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted30 Jun 2010 (estimated)
- Study start7 Jun 2010
- Primary completion9 Nov 2011
- Study completion9 Nov 2011
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for PsoriasisStudies of the same condition, open and under way.
- 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
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind
- Who is masked
- Participant, Investigator
- Enrolment
- 40 participants (actual)
Sponsor and investigators
- Lead sponsor
- Sirtris, a GSK Company
- Sponsor type
- Industry (pharma, biotech, devices)
- Collaborators
- GlaxoSmithKline
- Responsible party
- Sponsor
- Investigators
- GSK Clinical Trials, Study director, GlaxoSmithKline
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01154101
- Sponsor's protocol ID
- 114296
- Status last verified
- Sep 2017
- First submitted
- 22 Apr 2010
- Last updated
- 13 Oct 2017
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- Yes
- 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.
Publications
Krueger JG, Suarez-Farinas M, Cueto I, Khacherian A, Matheson R, Parish LC, Leonardi C, Shortino D, Gupta A, Haddad J, Vlasuk GP, Jacobson EW. A Randomized, Placebo-Controlled Study of SRT2104, a SIRT1 Activator, in Patients with Moderate to Severe Psoriasis. PLoS One. 2015 Nov 10;10(11):e0142081. doi: 10.1371/journal.pone.0142081. eCollection 2015.
PubMed 26556603
Study at a glance
From the registry record, last updated by the sponsor on 13 Oct 2017. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Randomized, Double-Blind, Placebo-Controlled, Phase IIa Study of the Clinical Activity, Safety, and Tolerability of SRT2104 in Subjects With Moderate to Severe Plaque-Type Psoriasis
- ClinicalTrials.gov ID
- NCT01154101
- Acronym / sponsor ID
- 114296
- Conditions
- Psoriasis
- Phase
- Phase 2
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 40 participants (actual)
- Lead sponsor
- Sirtris, a GSK CompanyIndustry (pharma, biotech, devices)
- Collaborators
- GlaxoSmithKline
- Study start
- 7 Jun 2010 (actual)
- Primary completion
- 9 Nov 2011 (actual)
- Study completion
- 9 Nov 2011 (actual)
- First posted
- 30 Jun 2010 (estimated)
- Results
- Posted 13 Oct 2017
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This double-blind, placebo-controlled study will be conducted at 5 study centers in the United States. Approximately 30 subjects with moderate to severe plaque-type psoriasis will take part. The study will consist of a screening period of up to 21 days, a 12-week treatment period with 7 on-treatment clinic visits (approximately one every 2 weeks) and a post-dosing follow-up clinic visit approximately 30 days after the last dose of study drug is taken.
Subjects will be randomized to receive either 250mg, 500mg or 1000mg of study drug or placebo. Study drug will be taken by mouth on a full stomach, every day for 84 days.
Vital signs, clinical laboratory results (hematology, chemistry, and urinalysis), ECGs and physical examinations will be assessed at periodic intervals from Day 1 through Day 84.
A skin biopsy will be taken at the beginning and the end of the dosing period to evaluate any effects of the study drug on psoriasis. Investigators will perform other psoriasis evaluations (including the Psoriasis Area and Severity Index [PASI] and the Physician's Global Assessment [PGA] at 5 different times throughout the study to quantify the effects of SRT2104 on psoriasis activity.
Subjects will complete questionnaires throughout the study, to document their sense of well-being and mood at 4 different times during the study.
Five blood samples will be obtained at different timepoints during the study, to measure the amount of SRT2104 in the body.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind (participant, investigator)
- Number of arms
- 3
| Arm | Type | Receives |
|---|---|---|
| Cohort 2 - 500mg SRT2104/placebo dose group | Active comparator | Drug: Placebo, Drug: SRT210410 subjects will be randomized 4:1 (SRT2104: placebo) in each of 3 treatment arms (250mg, 500mg, or 1000mg). Cohort 2 will commence after Cohort 1 has completed 28 consecutive days of dosing, followed by the completion of a safety review by an Independent Safety Review Committee. Cohort 2 will be administered at approximately the same time every day, approximately 15 minutes following the consumption of food. Subjects must wait at least 1 hour after dosing before consuming additional calories. Dietary recommendations for the meal that precedes dosing will be provided to the study subjects by the clinical site staff. |
| Cohort 3 - 1000mg SRT2104/placebo dose group | Active comparator | Drug: Placebo, Drug: SRT210410 subjects will be randomized 4:1 (SRT2104: placebo) in each of 3 treatment arms (250mg, 500mg, or 1000mg). Cohort 3 will commence after Cohort 2 has completed 28 consecutive days of dosing, followed by the completion of a safety review by an Independent Safety Review Committee. Cohort 3 will be administered four SRT2104 capsules at approximately the same time every day, approximately 15 minutes following the consumption of food. Subjects must wait at least 1 hour after dosing before consuming additional calories. Dietary recommendations for the meal that precedes dosing will be provided to the study subjects by the clinical site staff. |
| Cohort 1 - 250mg SRT2104/placebo dose group | Active comparator | Drug: Placebo, Drug: SRT210410 subjects will be randomized 4:1 (SRT2104: placebo) in each of 3 treatment arms (250mg, 500mg, or 1000mg). Cohort 1 will be administered at approximately the same time every day, approximately 15 minutes following the consumption of food. Subjects must wait at least 1 hour after dosing before consuming additional calories. Dietary recommendations for the meal that precedes dosing will be provided to the study subjects by the clinical site staff. Dosing for Cohort 2 will not commence until Cohort 1 has completed 28 consecutive days of dosing, followed by the completion of a safety review by an Independent Safety Review Committee. |
Who may qualify
- Ages
- 18 to 80 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (7 listed)
- Able and willing to provide written informed consent to participate in the study
- Be male or female aged 18 to 80 years (inclusive)
- Have a diagnosis of clinically confirmed, stable (without recent documented flare within 30 days prior to the Screening Visit), plaque-type psoriasis for at least 6 months involving ≥10% of body surface area
- Have a baseline PASI of ≥10
- Be a candidate for systemic psoriasis therapy, in the opinion of the investigator
Key exclusion criteria (23 listed)
- Has received systemic non-biologic psoriasis therapy or PUVA phototherapy within 4 weeks prior to the Screening Visit, or had topical psoriasis treatment or UVB phototherapy within 2 weeks prior to the Screening Visit
- Has received previous treatment with biologic agents within 5 drug half-lives (or within 3 months if half-life is unknown) prior to the first dose of SRT2104
- Has received a live vaccination within 4 weeks prior to the Screening Visit or intends to have a live vaccination during the course of the study
- Use of any other non-psoriatic prescription drug therapy, with the exception of any prescription medication administered at a stable dose for at least 6 weeks prior to the Screening Visit; however, the administration of proton pump inhibitors during the study dosing period is prohibited
- Use of any dietary or herbal supplements, with the exception of those administered at a stable dose for at least 6 weeks prior to the Screening Visit
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 the placebo product, the SRT2104 drug substance will be replaced by microcrystalline cellulose (Avicel® PH 105) to match the SRT2104 investigational product. | Drug | Cohort 1 - 250mg SRT2104/placebo dose group, Cohort 2 - 500mg SRT2104/placebo dose group, Cohort 3 - 1000mg SRT2104/placebo dose group |
| SRT2104SRT2104 drug substance is a new chemical entity which is supplied as a fine, yellowish/amber powder. The SRT2104 investigational product is prepared by packing 250 mg of micronized SRT2104 powder with no additional additives into a size 00 opaque, hard gelatin capsule, packaged in dosing bottles containing a single daily dose. | Drug | Cohort 1 - 250mg SRT2104/placebo dose group, Cohort 2 - 500mg SRT2104/placebo dose group, Cohort 3 - 1000mg SRT2104/placebo dose group |
Primary outcome
Assessment of Clinical Activity by Improvement Score (Using Krueger Criteria): Number of Participants With Good or Excellent Improvement Score Based on Histological Assessments of Skin Biopsies After 12 Weeks of Exposure
Time frame: 12 weeks
According to the Krueger criteria, improvement score is classified as Good improvement defined as reduction in epidermal thickness by at least 30% normalized keratinocyte differentiation but most keratinocytes still express K16. Excellent improvement defined as reduction in epidermal thickness to normal or almost normal normalized keratinocyte differentiation and absent keratinocyte expression of K16. No improvement defined as no improvement in epidermal thickness keratinocyte differentiation or K16 expression on keratinocytes. A binomial response was defined for each participant according to whether the participant had an improvement score of "good or excellent improvement" (response=1) or not (response=0). Number of participants with good or excellent improvement score are presented.
Number of Participants With Any Adverse Events (AE) and Serious Adverse Events (SAE)
Time frame: Up to Follow-up (Day 114)
An AE is any untoward medical occurrence in a participant or clinical investigation participant, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease (new or exacerbated) temporally associated with the use of a medicinal product. For marketed medicinal products, this also includes failure to produce expected benefits (i.e., lack of efficacy), abuse or misuse. SAE is any untoward medical occurrence that, at any dose results in death, is life-threatening, requires hospitalization or prolongation of existing hospitalization, results in disability/incapacity, or is a congenital anomaly/birth defect or is medically significant. The AE category in the data table includes participants who experienced serious or non-serious adverse events or both.
Number of Participants With Hematology and Coagulation Abnormalities of Potential Clinical Concern
Time frame: Up to Follow-up (Day 114)
Hematology parameters included hemoglobin, hematocrit, red blood cell count, red cell distribution width, mean corpuscular volume, mean corpuscular hemoglobin, mean corpuscular hemoglobin concentration, platelets, white blood cell count and complete white blood cell count differential. Coagulation parameters included activated partial thromboplastin time and prothrombin time/international normalized ratio. The potential clinical concern range for hematology parameters were: white blood cell count (low: <0.67x10^9/Liter x lower limit of normal [LLN] and high: >1.82x10^9/L x upper limit of normal [ULN]), neutrophil count: (low: <0.83x10^9/Liter x LLN), hemoglobin (low: <0.85 gram/Liter x LLN and high: >1.03 gram/Liter x ULN for males and >1.13 gram/Liter x ULN for females), hematocrit with units ratio (high: >1.02 x ULN for males and >1.17 x ULN for females), platelet count (low: <0.67x10^9/Liter x LLN and high >1.57x10^9/Liter x ULN) and lymphocytes (low: <0.81x10^9/Liter x LLN).
Number of Participants With Clinical Chemistry Abnormalities of Potential Clinical Importance
Time frame: Up to Follow-up (Day 114)
The potential clinical concern range for clinical chemistry parameters were: Albumin:(low: <0.86 gram/Liter x LLN), Calcium:(low: <0.91 millimol/Liter [mmol/L] x LLN and high: >1.06 mmol/L x ULN), Creatinine: (high: >1.3 mmol /L x ULN), Glucose: (low: <0.71 mmol/L x LLN, high: >1.41 mmol/L x ULN), Magnesium: (low: <0.63 mmol/L x LLN, high: >1.03 mmol/L x ULN), Phosphorus: (low: <0.8 mmol/L x LLN, high: >1.14 mmol/L x ULN), Sodium: (low: <0.96 mmol/L x LLN, high: >1.03 mmol/L x ULN), Urea: (high: >1.5 mmol/L x ULN), Gamma glutamyl transferase: (high: >2 International units per L x ULN), Total bilirubin (high: 1.5 x ULN), both alanine amino transferase and aspartate amino transferase (high:≥ 2x ULN Units/L) and Bicarbonate: (low: <18 mmol/L and high: >32 mmol/L). Number of participants with clinical chemistry abnormalities of potential clinical importance are presented.
Number of Participants With Abnormal Electrocardiogram (ECG) Values
Time frame: Up to Follow-up (Day 114)
12-lead ECG was performed in the rested state with the participant in the supine position with ECG leads on for at least 5 minutes prior to ECG recording. ECGs included PR (PQ), QRS, QT and QT corrected by Bazett's formula (QTcB), QT corrected by Fridericia's formula (QTcF) intervals. Identification of any conduction abnormalities were recorded in the eCRF. If a participant's QTc intervals were prolonged, then the ECG was done in triplicate with results reported as an average of the three ECGs. Number of participants with abnormal electrocardiogram (ECG) values are presented.
Number of Participants With Vital Signs of Potential Clinical Importance
Time frame: Up to Follow-up (Day 114)
Vital sign assessments included measurements of resting heart rate and blood pressure. Potential clinical concern range for systolic blood pressure: <85 and >160 millimeter of mercury (mmHg), for diastolic: <45 and >100 mmHg and heart rate: <40 and >110 beats per minute. Number of participants with vital signs of potential clinical importance are presented.
6 secondary outcomes
Number of Participants With Clinical Activity in Psoriasis Area and Severity Index (PASI) Score After 4, 8, and 12 Weeks of Exposure
Time frame: Weeks 4, 8 and 12
Summary of Physician's Global Assessment (PGA) Score After 4, 8 and 12 Weeks of Exposure
Time frame: Weeks 4, 8 and 12
Area Under Curve (AUC) of 12 Weeks of Dosing With 0.25 g, 0.5 g and 1.0 g SRT2104 in the Fed State in Participants
Time frame: Pre-dose (30 minutes or less before dosing: 1 sample), 0.5 to 2 hours and 3 to 6 hours post-dose (1 sample), 6 to 22 hours post-dose (2 samples) up to Week 12
Maximum Plasma Concentration (Cmax) of 12 Weeks of Dosing With 250 Milligrams (mg), 500 mg and 1000 mg SRT2104 in the Fed State in Participants
Time frame: One sample: Pre-dose (30 minutes or less before dosing), One sample: 0.5 to 2 hours post-dose and 3 to 6 hours post-dose and 2 samples 6 to 22 hours post dose, at any Visit 4 (Day 28 or Week 4), Visit 6 (Day 56 or Week 8) or Visit 8 (Day 84 or Week 12)
Change From Baseline in Fibroblast Growth Factor 21 (FGF21) as an Indicator of the Pharmacodynamic Effects of SRT2104
Time frame: Baseline (Day 1) and Days 28, 56 and 84
Change From Baseline in High-sensitivity C-reactive Protein (hsCRP) as an Indicator of the Pharmacodynamic Effects of SRT2104
Time frame: Baseline (Day 1) and Days 28, 56 and 84
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 13 Oct 2017.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Derived from this study: PubMed 26556603Krueger JG, Suarez-Farinas M, Cueto I, Khacherian A, Matheson R, Parish LC, Leonardi C, Shortino D, Gupta A, Haddad J, Vlasuk GP, Jacobson EW. A Randomized, Placebo-Controlled Study of SRT2104, a SIRT1 Activator, in Patients with Moderate to Severe Psoriasis. PLoS One. 2015 Nov 10;10(11):e0142081. doi: 10.1371/journal.pone.0142081. eCollection 2015.
- 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
8 sites 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 Psoriasis, run by Sirtris, a GSK Company at 8 sites in United States.
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 7 inclusion and 23 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 13 Oct 2017. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 8 sites in United States. 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. 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?
Yes. Results are posted in the registry (first posted 13 Oct 2017). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
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?
Assessment of Clinical Activity by Improvement Score (Using Krueger Criteria): Number of Participants With Good or Excellent Improvement Score Based on Histological Assessments of Skin Biopsies After 12 Weeks of Exposure (time frame: 12 weeks). The study lists 6 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT01154101, which also lists 1 linked publication.
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 13 Oct 2017.