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Combining Poly (ADP-Ribose) Polymerase (PARP) Inhibitors with Chemotherapeutic Agents: Promise and Challenges

Kyaw Zin Thein1, Rajat Thawani1, Shivaani Kummar2

  • 1Comprehensive Cancer Centers of Nevada, Las Vegas, NV, USA.

Cancer Treatment and Research
|November 17, 2023
PubMed

Insights

Poly (ADP-ribose) polymerase (PARP) inhibitors show promise in treating specific cancers. Combining PARP inhibitors with chemotherapy may broaden their therapeutic use and improve patient outcomes.

Area of Science:

  • Oncology
  • Molecular Biology
  • Pharmacology

Background:

  • Precision oncology leverages molecular drivers for targeted drug development.
  • DNA damage response (DDR) pathways are crucial in cancer and therapeutic targeting.
  • PARP inhibitors are approved for specific cancers (ovarian, breast, prostate, pancreatic) with relevant mutations, showing clinical benefit.

Purpose of the Study:

  • To discuss the combination of PARP inhibitors with chemotherapeutic agents.
  • To review clinical experience, lessons learned, and future directions for this combination therapy.

Main Methods:

  • Review of existing literature and clinical trial data on PARP inhibitor combinations.
  • Analysis of therapeutic strategies involving PARP inhibitors and chemotherapy.

Main Results:

  • Single-agent PARP inhibitors have limited efficacy to specific tumor types and genetic contexts.
  • DDR pathways' role in repairing cytotoxic damage suggests synergistic potential with chemotherapy.
  • Combination strategies aim to broaden the application of PARP inhibitors.

Conclusions:

  • While PARP inhibitors offer benefits in select cancers, their efficacy is context-dependent.
  • Combining PARP inhibitors with chemotherapy presents a promising strategy to enhance treatment efficacy and overcome resistance.
  • Further research and clinical trials are needed to optimize combination therapies and expand their use in oncology.
Keywords:
BReast CAncer gene BRCA 1/2ChemotherapeuticsDNA damage response (DDR) pathwayHomologous recombination (HR) repairPoly (ADP-ribose) polymerase (PARP) inhibitors

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