Study of Tenofovir Disoproxil Fumarate (TDF) for Prevention of HIV
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Purpose
This Phase 2 study involving tenofovir disoproxil fumarate (TDF) will assess the extended safety of TDF 300 mg per day among young women who are not HIV-infected.
| Condition | Intervention | Phase |
|---|---|---|
|
HIV Infections |
Drug: Tenofovir Disoproxil Fumarate |
Phase 2 |
| Study Type: | Interventional |
| Study Design: | Allocation: Randomized Endpoint Classification: Safety/Efficacy Study Intervention Model: Parallel Assignment Masking: Double-Blind Primary Purpose: Prevention |
| Official Title: | Phase 2 Study of Tenofovir Disoproxil Fumarate (TDF) for Prevention of HIV |
- Effectiveness endpoint is conversion for antibodies to HIV 1 or 2 as determined by an OMT test and confirmed by an ELISA from a finger prick or blood specimen. Discordant results between the OMT and the ELISA will be tested with WB.
- Laboratory safety endpoints will include serum creatinine and phosphorus for kidney function, and AST and ALT for hepatic function. Reported adverse events will also be used for clinical evaluation of safety.
| Estimated Enrollment: | 1200 |
| Study Start Date: | July 2004 |
| Estimated Study Completion Date: | March 2006 |
The protocol describes a randomized, fully-masked, parallel, placebo-controlled study of TDF for pre-exposure prophylaxis of HIV in high-risk women. TDF was selected for investigation as prophylaxis against HIV in high-risk women because of its unique pharmacological profile. In addition to the convenience of being a once daily single tablet, TDF’s safety profile is comparable to placebo among HIV infected persons, it has striking anti-HIV potency, and it has low potential for selection of resistant viruses. TDF is cleared from the body by the kidneys and is not metabolized by the liver. Therefore, TDF has limited potential to have pharmacokinetic interactions with other hepatically metabolized drugs. Each of these properties is necessary given the realities of the intended target populations. Moreover, initial prevention studies in simian models have provided encouraging results. Finally, the drug’s sponsor is supportive of investigating the potential use of TDF as a preventive, as well as a therapeutic agent.
Participants’ HIV status is monitored monthly. Participants are also monitored for safety using periodic physical examinations, serial laboratory tests and adverse event queries. Lab tests for kidney and liver function were to be conducted at screening, months 1, 3 and every 3 months thereafter or at the final visit if early withdrawal. To minimize the risk of contracting HIV infection, participants are counseled monthly to use male condoms for each act of intercourse. Participants converting for antibodies to HIV are counseled and referred to medical services as appropriate for each country.
Eligibility| Ages Eligible for Study: | 18 Years to 35 Years |
| Genders Eligible for Study: | Female |
| Accepts Healthy Volunteers: | Yes |
Inclusion Criteria:
- HIV seronegative
- Willing and able to give informed consent
- 18 years to 35 years old, inclusive
- Sexually active (on average, coitus 3 times per week)
- Have had more than three sexual partners in the last month
- Willing to use study product as directed
- Willing to adhere to follow-up schedule
- Willing to participate in the study for up to 12 months
- Not pregnant, breast feeding, or desiring a pregnancy during the 12 months of participation
- Have adequate renal function (serum creatinine < 1.5 mg/dL)
- Have adequate liver function (hepatic transaminases [ALT and AST] < 43 U/L)
- Have adequate serum phosphorus (greater than or equal to 2.2 mg/dL)
- In general good health (no active, serious infections that require parenteral antibiotics; no active clinically significant medical conditions, including heart disease, diabetes, asthma, alcoholism, and cancer)
Contacts and Locations| Cameroon | |
| Care and Health Program | |
| Douala, Cameroon | |
| Ghana | |
| Virtual Access | |
| Tema, Ghana | |
| Nigeria | |
| University of College Hospital | |
| Ibadan, Nigeria | |
| Study Director: | Leigh Peterson, PhD | FHI 360 |
More Information
No publications provided
| ClinicalTrials.gov Identifier: | NCT00122486 History of Changes |
| Other Study ID Numbers: | 9780 |
| Study First Received: | July 20, 2005 |
| Last Updated: | July 28, 2006 |
| Health Authority: | United States: Institutional Review Board |
Keywords provided by FHI 360:
|
AE adverse event AIDS acquired immunodeficiency syndrome ALT (SGPT) alanine aminotransferase ART antiretroviral therapy AST (SGOT) aspartate aminotransferase DCF data collection forms DMC Data Monitoring Committee FDA (U.S.) Food and Drug Administration GCP Good Clinical Practice guidelines HB sAg Hepatitis B surface antigen ICH International Conference of Harmonisation |
IND Investigational New Drug Application IRB Institutional Review Board IU international units mg milligram(s) mm3 cubic millimeter(s) PCR polymerase chain reaction SAE serious adverse event µg microgram ULN upper limit of the normal range WB Western Blot Human Immunodeficiency Virus |
Additional relevant MeSH terms:
|
HIV Infections Acquired Immunodeficiency Syndrome Lentivirus Infections Retroviridae Infections RNA Virus Infections Virus Diseases Sexually Transmitted Diseases, Viral Sexually Transmitted Diseases Immunologic Deficiency Syndromes Immune System Diseases Slow Virus Diseases Tenofovir |
Tenofovir disoproxil Reverse Transcriptase Inhibitors Nucleic Acid Synthesis Inhibitors Enzyme Inhibitors Molecular Mechanisms of Pharmacological Action Pharmacologic Actions Anti-Retroviral Agents Antiviral Agents Anti-Infective Agents Therapeutic Uses Anti-HIV Agents |
ClinicalTrials.gov processed this record on May 16, 2013