Renal ImpairmentPhase 1NCT00768404
A Study to Evaluate the Pharmacokinetics of VI-0521 Subjects With Renal Impairment
A Phase 1 study testing Topirmate and Phentermine in people with Renal Impairment, run by VIVUS LLC at 4 sites in United States.
Trial summary
VI-0521, a fixed dose combination of immediate-release (IR) phentermine and controlled-release (CR) topiramate, is in Phase III clinical development as a potential therapy for obesity. In human, both phentermine and topiramate are primarily cleared by renal excretion. Read more about this study
- Who is it for?
- Ages 19 to 75 yearsHealthy volunteers can take part
- Conditions the study is for
- Renal Impairment
- What is being tested?
- Topirmate and Phentermine
- Type of treatment
- Pill or oral medicine
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 32 participants
- Where
- 4 sitesUnited States
- Study dates
- Oct 2008to Jul 2009
- Phase
- Phase 1
- 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 19 to 75 years
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Who may be able to join
- Group 1 will consist of 8-10 males or females with normal renal function, 19-75 years of age, inclusive.
- Groups 2-4 will consist of 8-10 males or females per group with varying degree of stable renal impairment
Who cannot join
- A history or presence of significant cardiovascular, neurological, hematological, psychiatric, hepatic, gastrointestinal, pulmonary, endocrine, immunologic or renal disease or other condition known to interfere with the absorption, distribution, metabolism, or excretion of drugs or place the subjects at increased risk as determined by the investigator; any history of glaucoma, increased intraocular pressure, or medications to treat increased intraocular pressure; presence of cholelithiasis or cholecystitis within the last 6 months that has not been surgically treated with cholecystectomy; any history of a cardiovascular or cerebrovascular event; subjects requiring dialysis; any active malignancy except basal cell carcinoma; systolic blood pressure > 180 mm Hg or diastolic blood pressure > 100 mm Hg at screening or at check-in (2 rechecks are allowed); Hemoglobin <12.0 g/dL for Group 1 (patients with normal renal function); Hemoglobin <. 9.0 g/dL for Groups 2, 3 and 4 (patients with mild to severe renal function) positive drug/alcohol test at screening or check in; blood donation or significant blood loss within 56 days of dosing; plasma donation within 7 days of dosing. In female subjects, a positive pregnancy test at screening or check-in is exclusionary
Trial locations and contacts
4 sites in 1 country.
United States4 sites
Advanced Clinical Research Institute
Anaheim, California, 92801
Clinical Pharmacology of Miami
Miami, Florida, 33014-3616
DaVita Clinical Research
Minneapolis, Minnesota, 55404
Orlando Clinical Research Center
Orlando, Florida, 32809-3017
About this study
Official title: A Phase I, Open-Label, Parallel-Group, Single Dose, Non-Randomized Study To Compare The Pharmacokinetics Of Each Individual Component (Topiramate And Phentermine) Of The Combination Product VI-0521 In Subjects With Mild, Moderate And Severe Renal Impairment To Subjects With Normal Renal Function
VI-0521, a fixed dose combination of immediate-release (IR) phentermine and controlled-release (CR) topiramate, is in Phase III clinical development as a potential therapy for obesity. In human, both phentermine and topiramate are primarily cleared by renal excretion. The contribution of hepatic metabolism to elimination of phentermine and topiramate is not significant. Obese patients, the proposed indicated population for future treatment with VI-0521, are likely to have renal impairment. Therefore, this study is important in understanding the effect of renal impairment on the pharmacokinetics of topiramate and phentermine in subjects with renal impairment compared to subjects with normal renal function.
Read the detailed description
This open-label, parallel-group, single dose, non-randomized study will be conducted at multiple sites in the United States in which up to 40 male and female subjects, 19-75 years of age (inclusive), with varying degrees of renal function may be enrolled and dosed to obtain at least 32 evaluable subjects (4 groups, 8 subjects per group). Subjects will report to the study site on the evening before treatment and will remain at the site until the 48-hour PK sample has been drawn (approximately 3 days). All subjects will be fasted overnight for a minimum of 8 hours before drug treatment in the morning. A single oral dose of the combination product VI-0521 (15 mg phentermine and 92 mg topiramate) will be administered with 240 mL of water at hour 0. Standard meals will be provided uniformly to all subjects at approximately 4 and 9 hours after dosing, and an evening snack will be provided approximately 12 - 13 hours after dosing. Blood samples for the determination of phentermine and topiramate concentrations in plasma will be collected at 0 (pre-dose), 1, 3, 4, 5, 6, 7, 8, 9, 10, 12, 16, 24, 36 and 48 hours post dosing. Subjects will be released from the study site following the 48-hour sample but will return to the site for PK sampling at 72, 96, 120, 144, 168 and 192 hours post dose. The severe renal impairment group will be given the option to stay at the site for the duration of the study.
- Conditions
- Renal Impairment
- Being tested
- Topirmate and Phentermine
- Medical subject headings
- Renal Insufficiency
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Topirmate and PhentermineDrug
A single oral dose of the combination product VI-0521 (15 mg phentermine and 92 mg topiramate) will be administered with 240 mL of water at hour 0.
| Study group | Role | What they receive |
|---|---|---|
| A | Experimental | Not described Receives: Drug: Topirmate and Phentermine |
What is being measured
The primary outcome is the main question the study is designed to answer.
Pharmacokinetics
Measured: 9 days
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted8 Oct 2008 (estimated)
- Study startOct 2008
- Primary completionMar 2009
- Study completionJul 2009
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Renal ImpairmentStudies 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 1
- Primary purpose
- Treatment
- Allocation
- Non-randomised
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 32 participants (actual)
Sponsor and investigators
- Lead sponsor
- VIVUS LLC
- Sponsor type
- Industry (pharma, biotech, devices)
- Investigators
- Shiyin Yee, PhD, Study director, VIVUS LLC
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00768404
- Sponsor's protocol ID
- OB-106
- Status last verified
- Nov 2009
- First submitted
- 7 Oct 2008
- Last updated
- 1 Dec 2009
- Results posted
- No
- Data monitoring committee
- No
Study at a glance
From the registry record, last updated by the sponsor on 1 Dec 2009. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Phase I, Open-Label, Parallel-Group, Single Dose, Non-Randomized Study To Compare The Pharmacokinetics Of Each Individual Component (Topiramate And Phentermine) Of The Combination Product VI-0521 In Subjects With Mild, Moderate And Severe Renal Impairment To Subjects With Normal Renal Function
- ClinicalTrials.gov ID
- NCT00768404
- Acronym / sponsor ID
- OB-106
- Conditions
- Renal Impairment
- Phase
- Phase 1
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 32 participants (actual)
- Lead sponsor
- VIVUS LLCIndustry (pharma, biotech, devices)
- Study start
- Oct 2008
- Primary completion
- Mar 2009 (actual)
- Study completion
- Jul 2009 (actual)
- First posted
- 8 Oct 2008 (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.
VI-0521, a fixed dose combination of immediate-release (IR) phentermine and controlled-release (CR) topiramate, is in Phase III clinical development as a potential therapy for obesity. In human, both phentermine and topiramate are primarily cleared by renal excretion. The contribution of hepatic metabolism to elimination of phentermine and topiramate is not significant. Obese patients, the proposed indicated population for future treatment with VI-0521, are likely to have renal impairment. Therefore, this study is important in understanding the effect of renal impairment on the pharmacokinetics of topiramate and phentermine in subjects with renal impairment compared to subjects with normal renal function.
Detailed description
This open-label, parallel-group, single dose, non-randomized study will be conducted at multiple sites in the United States in which up to 40 male and female subjects, 19-75 years of age (inclusive), with varying degrees of renal function may be enrolled and dosed to obtain at least 32 evaluable subjects (4 groups, 8 subjects per group). Subjects will report to the study site on the evening before treatment and will remain at the site until the 48-hour PK sample has been drawn (approximately 3 days). All subjects will be fasted overnight for a minimum of 8 hours before drug treatment in the morning. A single oral dose of the combination product VI-0521 (15 mg phentermine and 92 mg topiramate) will be administered with 240 mL of water at hour 0. Standard meals will be provided uniformly to all subjects at approximately 4 and 9 hours after dosing, and an evening snack will be provided approximately 12 - 13 hours after dosing. Blood samples for the determination of phentermine and topiramate concentrations in plasma will be collected at 0 (pre-dose), 1, 3, 4, 5, 6, 7, 8, 9, 10, 12, 16, 24, 36 and 48 hours post dosing. Subjects will be released from the study site following the 48-hour sample but will return to the site for PK sampling at 72, 96, 120, 144, 168 and 192 hours post dose. The severe renal impairment group will be given the option to stay at the site for the duration of the study.
Study design
- Primary purpose
- Treatment
- Allocation
- Non-randomised
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| A | Experimental | Drug: Topirmate and Phentermine |
Who may qualify
- Ages
- 19 to 75 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (2 listed)
- Group 1 will consist of 8-10 males or females with normal renal function, 19-75 years of age, inclusive.
- Groups 2-4 will consist of 8-10 males or females per group with varying degree of stable renal impairment
Key exclusion criteria (1 listed)
- A history or presence of significant cardiovascular, neurological, hematological, psychiatric, hepatic, gastrointestinal, pulmonary, endocrine, immunologic or renal disease or other condition known to interfere with the absorption, distribution, metabolism, or excretion of drugs or place the subjects at increased risk as determined by the investigator; any history of glaucoma, increased intraocular pressure, or medications to treat increased intraocular pressure; presence of cholelithiasis or cholecystitis within the last 6 months that has not been surgically treated with cholecystectomy; any history of a cardiovascular or cerebrovascular event; subjects requiring dialysis; any active malignancy except basal cell carcinoma; systolic blood pressure > 180 mm Hg or diastolic blood pressure > 100 mm Hg at screening or at check-in (2 rechecks are allowed); Hemoglobin <12.0 g/dL for Group 1 (patients with normal renal function); Hemoglobin <. 9.0 g/dL for Groups 2, 3 and 4 (patients with mild to severe renal function) positive drug/alcohol test at screening or check in; blood donation or significant blood loss within 56 days of dosing; plasma donation within 7 days of dosing. In female subjects, a positive pregnancy test at screening or check-in is exclusionary
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 |
|---|---|---|
| Topirmate and PhentermineA single oral dose of the combination product VI-0521 (15 mg phentermine and 92 mg topiramate) will be administered with 240 mL of water at hour 0. | Drug | A |
Primary outcome
Pharmacokinetics
Time frame: 9 days
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 1 Dec 2009.
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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.
Shiyin Yee, PhD study director
VIVUS LLC
4 sites in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 1 study testing Topirmate and Phentermine in people with Renal Impairment, run by VIVUS LLC at 4 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 2 inclusion and 1 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 1 Dec 2009. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 4 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 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.
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?
Pharmacokinetics (time frame: 9 days). 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 1 Dec 2009.