Improving non-nucleoside reverse transcriptase inhibitors for first-line treatment of HIV infection: the development pipeline and recent clinical data

Curr Opin Drug Discov Devel. 2008 Jul;11(4):458-70.

Abstract

Efavirenz non-nucleoside reverse transcriptase inhibitor (NNRTI)-based therapy or boosted protease inhibitor (PI)-based therapy are currently recommended as first-line regimens for the treatment of HIV infection. Although the available therapy options are efficacious and well-tolerated in the majority of patients, treatment durability is still limited by drug-related side effects, inadequate patient adherence and the development of drug resistance. PI-based regimens have higher tablet loads, more complicated drug interactions and have been associated with gastrointestinal side effects and metabolic abnormalities. NNRTI-based regimens are efficacious, but have a low genetic barrier to resistance and have been associated with rash, hypersensitivity reactions and central nervous system side effects. There is, therefore, still a need for first-line antiviral agents that facilitate patient adherence and allow durable suppression of viral replication. The next-generation NNRTIs in development include rilpivirine (TMC-278), UK-453061, RDEA-806, IDX-899 and MK-4965. These NNRTIs demonstrate significant advantages over efavirenz, and may improve treatment options for first-line therapy. A number of other structurally diverse compounds that inhibit common NNRTI-resistant mutant viruses are also under investigation. In this review, the desirable features of a next-generation NNRTI for treatment-naïve patients are discussed, as well as the properties of the NNRTIs that are currently in development.

Publication types

  • Review

MeSH terms

  • Animals
  • Anti-HIV Agents / adverse effects
  • Anti-HIV Agents / chemistry
  • Anti-HIV Agents / therapeutic use*
  • Drug Design*
  • Humans
  • Indoles / adverse effects
  • Indoles / chemistry
  • Indoles / therapeutic use*
  • Molecular Structure
  • Nitriles / therapeutic use
  • Phosphinic Acids / adverse effects
  • Phosphinic Acids / chemistry
  • Phosphinic Acids / therapeutic use*
  • Pyrimidines / therapeutic use
  • Reverse Transcriptase Inhibitors / adverse effects
  • Reverse Transcriptase Inhibitors / chemistry
  • Reverse Transcriptase Inhibitors / therapeutic use*
  • Rilpivirine
  • Structure-Activity Relationship
  • Treatment Outcome

Substances

  • Anti-HIV Agents
  • IDX 899
  • Indoles
  • Nitriles
  • Phosphinic Acids
  • Pyrimidines
  • Reverse Transcriptase Inhibitors
  • Rilpivirine