Lack of enrollment

PRO 140 2102 is a phase 2b, national, multicenter, randomized, double-blind, placebo-controlled study in order to evaluate the safety and efficacy of PRO 140 (anti-CCR5 monoclonal antibody) administered subcutaneously as an adjunct to a new, optimized, oral antiretroviral regimen in HIV-infected injection drug users with viral rebound and documented poor adherence to the previous antiretroviral regimen.

Key Inclusion Criteria:

1. Only R5 virus
2. HIV-1 RNA > 1,000 copies/mL but < 100,000 copies/mL
3. CD4+ lymphocyte counts > 100 cells/μL
4. Non-prescription recreational drug use within the previous 6 months

Key Exclusion Criteria:

1. Females who are pregnant (positive blood test), lactating, or breastfeeding, or who plan to become pregnant during the study
2. Prior use of any CCR5 entry inhibitors
3. History of any acquired immune deficiency syndrome (AIDS)-defining illness