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Safety and clinical effects of IDX12899 in HIV-1 infection

A phase I/IIa, double-blind study to evaluate the safety and tolerability, antiretroviral activity, pharmacokinetics and pharmacodynamics of IDX12899 in antiretroviral treatment-naïve HIV-1-infected subjects

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ISRCTN
Registry ID
ISRCTN89417804
Enrollment
40
Registered
2008-02-06
Start date
2008-01-03
Completion date
Unknown
Last updated
2015-01-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Chronic HIV-1 infection Infections and Infestations Chronic HIV-1 infection

Interventions

From 27/06/2008: Sequential cohorts of 10 subjects will be randomised at an 8:2 ratio to receive IDX12899 (oral capsule) 800 mg, 400 mg, 200 mg and 100 mg or placebo once daily for 7 days. Before 27/

Sponsors

Idenix Pharmaceuticals (USA)
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Male or Female, 21 to 65 years of age 2. Female of non-childbearing potential 3. Plasma HIV-1 RNA value >=5000 copies/mL 4. CD4+ count >=200 cells/mm3 5. Subject is antiretroviral treatment-naïve 6. Subject agrees to start a standard HAART regimen on Day 8 of the study or Kaletra® monotherapy for 28 days within 24 hours after the last dose of study medication 7. Subject has provided written informed consent to participate in the study

Exclusion criteria

Exclusion criteria: 1. Pregnant or breastfeeding 2. Male of reproductive potential and unwilling to use double barrier method of contraception during and for at least 30 days after the last dose of the study drug 3. Co-infection with acute hepatitis A (HAV), chronic hepatitis B (HBV) or active hepatitis C (HCV) 4. Alcohol or illicit drug abuse, or history of alcohol abuse or illicit drug abuse within the preceding one year 5. Potential allergy to the study medication or the follow-up HAART or Kaletra® therapy 6. Received an immunomodulating agent or immunotherapeutic vaccine within 30 days before Day -1 7. Receiving co-medication that is a known substrate, inhibitor and/or inducer of CYP3A4 8. Enrollment in another clinical study of an investigational agent 9. Subject who has received any investigational drug within 90 days prior to Day -1 10. History of AIDS-defining illness 11. History of or currently active disease that may put the subject at risk because of participation in this study 12. Subject with an intestinal malabsorption 13. Subject with a pre-existing Non-Nucleoside Reverse Transcriptase Inhibitor (NNRTI) drug resistance based on genotyping at Screening 14. Subject who has had a significant blood loss 30 days prior to Day -1 15. Subject has any of the following laboratory parameters at Screening: hemoglobin the Upper Limit of Normal (ULN), ASpartate aminoTransferase (AST) or ALanine aminoTransferase (ALT) >=2.5 x ULN, Total bilirubin >ULN

Design outcomes

Primary

MeasureTime frame
1. Proportion of subjects experiencing adverse events and laboratory abnormalities, followed-up until Study day 14 (7 days after the last dose of study drug) 2. Decrease from baseline through Day 8 in plasma HIV-1 RNA

Secondary

MeasureTime frame
1. Change from baseline at Day 8 in Reverse Transcriptase (RT) sequences of HIV-1 2. Change from baseline at Day 8 in CD4+ and CD8+ T-lymphocyte cell count 3. Plasma concentrations and calculated PharmacoKinetic (PK)/PharmacoDynamic (PD) parameters. The last PK sample is collected on Day 8 (24 hours after the last dose of study drug) 4. Profiling of metabolites. The last PK sample is collected on Day 8 (24 hours after the last dose of study drug)

Countries

Argentina

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026