Safety and Efficacy of an Antibody to CCR5 in Individuals With HIV Who Are Not Currently on Antiretroviral Therapy

This is a phase 1, randomized, placebo-controlled, dose-escalation study of CCR5mAb004 in HIV-1 seropositive individuals who are not receiving concurrent antiretroviral therapy. Subjects will be randomly assigned to receive a single intravenous (IV) infusion of one of four dose levels of CCR5mAb004 or matching placebo. A minimum of 10 subjects will be randomized to each cohort at a ratio of 4:1 (active:placebo). A minimum of 40 and maximum of 60 subjects will be enrolled. This study will be conducted at up to 10 sites in the United States.

Subjects in each cohort will be followed for 56 days after study agent administration. The safety, tolerability, and immunogenicity of CCR5mAb004 will be evaluated based on physical examination, adverse event (AE) reporting, and clinical laboratory tests. Blood will be collected at specified times for the determination of CCR5mAb004 serum concentrations, HIV-1 RNA levels, and CD4+ and CD8+ cell counts. If CD4+ cell counts are less than 200 during the study period, the subject should be offered standard-of-care per HIV treatment guidelines that may include the initiation of appropriate anti-retroviral therapy (AVR). CCR5mAb004 pharmacokinetic (PK) and pharmacodynamics (PD) will be measured over the 56-day study period. Anti-CCR5mAb004 antibody titers will be assessed prior to dosing on Day 0 and on Day 28 and Day 56.

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Key information

Conditions

HIV Infections Blood-Borne Infections Communicable Diseases Genital Diseases Immune System Diseases Immunologic Deficiency Syndromes Infections Lentivirus Infections RNA Virus Infections Retroviridae Infections Sexually Transmitted Diseases Sexually Transmitted Diseases, Viral Urogenital Diseases Virus Diseases

Age range

18 year–64 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 1

Primary location

AIDS Research Alliance, Los Angeles, California, United States

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

HIV-1 infection confirmed by enzyme immunoassay (EIA) and Western blot.
Age 18 to 64 years.
HIV-1 RNA > 5000 copies/mL.
CD4+ T cell count > 250 cells/uL.
Treatment naïve, or off antiretroviral treatment for at least 30 days prior to screening and 60 days prior to Day 0
CCR5 tropism confirmed by R5 PhenoSense assays.

Exclusion criteria

CXCR4 tropic or dual tropic virus at screening.
Laboratory values of Grade 3 or greater according to the Modified Division of Microbiology and Infectious Diseases (DMID) Adult Toxicity Tables.
History of Category C AIDS-defining illness according to the 1993 Centers for Disease Control and Prevention (CDC) AIDS surveillance definition.
History of any medical disease or condition that makes the subject (in the opinion of the investigator) unsuitable for the study.
Malignancy within the past 5 years (except for basal carcinomas of the skin and in situ cancers of the cervix).
Females who are pregnant or breastfeeding, or who plan to become pregnant during the study.
Subjects whose dosage or number of prescription medications has changed within 30 days prior to screening
Positive for hepatitis B surface antigen (HBsAg) or antibody to hepatitis C virus (HCV).
Positive alcohol or drug screen

Treatment and study plan

CCR5mAb004

Drug

Primary outcomes

The major safety endpoints are AE rates and laboratory abnormalities through Day 56.

Secondary outcomes

The efficacy endpoints include change from baseline HIV-1 RNA levels (including viral kinetics) through Day 56, and change from baseline CD4+ and CD8+ cell counts through Day 56.

Sponsors and collaborators

Lead sponsor

Human Genome Sciences Inc.

Industry

Registry information

Official study title

A Phase 1, Randomized, Placebo-Controlled, Single-Injection, Dose-Escalation Study to Evaluate the Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of Ccr5mab004 (Human Monoclonal Igg4 Antibody To Ccr5) in Hiv-1 Seropositive Individuals Who Are Not Receiving Concurrent Antiretroviral Therapy

Important dates

Study start: 2005
Study completion: 2006
First posted: Jun 17, 2005
Registry last updated: Aug 2, 2013

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Published trials that share one or more normalized conditions with this study.

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