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Anti-HIV-1 Activity of Weekly or Biweekly Treatment with Subcutaneous PRO 140, a CCR5 Monoclonal Antibody
Journal article   Open access   Peer reviewed

Anti-HIV-1 Activity of Weekly or Biweekly Treatment with Subcutaneous PRO 140, a CCR5 Monoclonal Antibody

Jeffrey M Jacobson, Melanie A Thompson, Jacob P Lalezari, Michael S Saag, Paul Zingman, Barry S D'Ambrosio, Nancy Stambler, Yakov Rotshteyn, Andre J Marozsan, Paul J Maddon, …
The Journal of infectious diseases, v 201(10), pp 1481-1487
15 May 2010
PMID: 20377413
url
https://doi.org/10.1086/652190View
Published, Version of Record (VoR)Maybe Open Access (Publisher Bronze) Open

Abstract

Background . PRO 140 is a humanized CCR5 monoclonal antibody that has demonstrated potent antiviral activity when it is administered intravenously to adults infected with CCR5-tropic (R5) human immunodeficiency virus type 1 (HIV-1). This study is the first to evaluate subcutaneous administration. Methods . A randomized, double-blind, placebo-controlled study was conducted among 44 subjects with HIV-1 RNA levels of >5000 copies/mL, CD4+ cell counts of >300 cells/µL, no receipt of antiretroviral therapy for ⩾12 weeks, and only R5 HIV-1 detectable. Subjects received placebo, 162 mg of PRO 140, or 324 mg of PRO 140 weekly for 3 weeks or 324 mg of PRO 140 every other week for 2 doses by means of subcutaneous infusion. Subjects were monitored for 58 days for safety, antiviral effects, and PRO 140 serum concentrations. Results . Subcutaneous PRO 140 demonstrated potent and prolonged antiretroviral activity. Mean log10 reductions in HIV-1 RNA level were 0.23, 0.99 ( P = .009), 1.37 (P<.001), and 1.65 (P<.001) for the placebo, 162 mg weekly, 324 mg biweekly, and 324 mg weekly dose groups, respectively. Viral loads remained suppressed between successive doses. Treatment was generally well tolerated. Conclusions . This trial demonstrates proof of concept for a monoclonal antibody administered subcutaneously in HIV-1 infected individuals. Subcutaneous PRO 140 offers the potential for significant dose-dependent HIV-1 RNA suppression and infrequent patient self-administration. Trial registration . ClinicalTrials.gov identifier: NCT00642707.

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Collaboration types
Industry collaboration
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Web of Science research areas
Immunology
Infectious Diseases
Microbiology
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