Clinical trial NCT00686270: A Long Term Safety Study of Apricitabine in HIV-infected Patients
Official title: A Phase 3, Open Label 96-week Extension Study of the Safety of Apricitabine in Treatment-experienced HIV-1 Infected Patients Who Have Completed Protocol AVX-301 or AVX-302 or Who Have Met the Criteria for Open-label Access to ATC Because of Virological Failure/Lack of Response
Study type: INTERVENTIONAL
Overall status: WITHDRAWN
Phase: PHASE3
Conditions: HIV Infections
Keywords: HIV-1 infection
NRTI resistance
M184V mutation
reverse transcriptase
apricitabine
drug resistance
safety and tolerability
therapy failure
Treatment Experienced
Lead sponsor: Avexa
Sponsor class: INDUSTRY
First posted: 2008-05-29
Enrollment: 0
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: NA
Intervention model: SINGLE_GROUP
Primary purpose: TREATMENT

Brief summary: This study will examine the long term safety of apricitabine in HIV-1 infected patients from studies AVX-301 or AVX-302. Eligible patients are those who have either (a)completed studies AVX-301 or AVX-302; or (b)met the criteria for virological failure/lack of response, and consequently wish to withdraw early from studies AVX-301 or AVX-302.

Detailed description: The clinical study AVX-301 studies the efficacy and safety of 800mg and 1200mg BID ATC in combination with an optimized background in patients who are HIV-1 infected and have failed treatment with emtricitabine or lamivudine and have confirmed M184V/I mutation. Patients who do not achieve at least a 0.5 log10 copies/mL decrease in plasma HIV RNA by Week 16, or who experience a \>1.0 log10 copies/mL increase (confirmed on two separate occasions at least one week apart) in plasma HIV RNA from nadir at or after Week 16, are eligible for screening for entry into this study. In addition, patients who complete study AVX-301 are also eligible for screening. The clinical study AVX-302 is similar and studies the efficacy and safety of a single dose of ATC (determined in AVX-301). Patients in AVX-302 who experience virologic failure or lack of virologic response will similarly be eligible for screening for entry into this study. In addition, patients who complete study AVX-302 are also eligible for screening. This is a phase 3, open-label, multi-center study of up to 96 weeks duration. Patients will receive for up to 96 weeks open-label ATC, initially at a dose of 1200mg orally BID. Following selection of the optimum ATC dose in protocol AVX-301 and termination of one of the two ATC doses (800mg or 1200mg orally BID) in protocol AVX-301, patients in this protocol will be transferred to the optimum dose, if required. The total number of patients expected to be enrolled in studies AVX-301 and AVX-302 is approximately 1866 in total.Patients will receive ATC orally in combination with their existing ART. Background antiretroviral therapy (ART) may be revised at any time during the study at the discretion of the investigator but must not include lamivudine, emtricitabine, zalcitabine or any other deoxycytidine analogue NRTI. The study will examine the safety and tolerability of long term treatment with apricitabine in combination with other ART.

Eligibility criteria: Inclusion Criteria:

* Patients who complete studies AVX-301 or AVX-302 or :Patients who meet the criteria for virologic failure/lack of response in study AVX-301 or AVX-302
* 18 years of age, or older
* Male, or non-pregnant, non-breastfeeding female patients, who agree to comply with the applicable contraceptive requirements of the protocol.

Exclusion Criteria:

* Prior withdrawal from AVX-301 or AVX-302
* Current acute or chronic hepatitis B virus infection
* Current treatment for hepatitis C virus infection
* Renal Function not adequate

Primary outcomes:
measure: The number, type and severity of SAEs occuring during the study
timeFrame: Week 96
Secondary outcomes:
Other outcomes:
Locations:
Study officials:
affiliation: UAB Centre for AIDS Research, Birmingham, Alabama, 35294-2050, USA
name: Mike Saag, Professor
role: PRINCIPAL_INVESTIGATOR
affiliation: Avexa Ltd
name: Susan W Cox, PhD
role: STUDY_DIRECTOR
References: