Which medications in the drug class Chemokine Receptor Antagonists are used in the treatment of Pediatric HIV Infection?

Updated: Mar 05, 2020
  • Author: Delia M Rivera, MD; Chief Editor: Russell W Steele, MD  more...
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Answer

Chemokine Receptor Antagonists

Selectively antagonizes the interaction between human CCR5 and HIV-1 gp120. Blocking this interaction prevents CCR5-tropic HIV-1 entry into cells.

Maraviroc (MVC, Selzentry)

Maraviroc is a selective chemokine receptor antagonist (CRA). It is imperative to test all patients for CCR5 tropism using a highly sensitive tropism assay before initiating the drug. Outgrowth of pre-existing low-level CXCR4- or dual/mixed-tropic HIV-1 not detected by tropism testing at screening has been associated with virologic failure on maraviroc. It blocks viral entry via CCR5 co-receptor into host cells, reduces viral load, and increases T-cell counts in CCR5-tropic HIV-1 (ie, R5 virus). This agent is indicated for combination treatment with optimized background therapy in treatment-experienced adults infected with only R5 virus who have evidence of viral replication and have HIV-1 strains resistant to multiple antiretroviral agents. It is approved for children as young as 2 years old.


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