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Poly(adp-ribose) polymerase inhibitors: a novel drug class with a promising future
Elaina M Gartner1, Angelika M Burger, Patricia M Lorusso
1Departments of Internal Medicine and daggerPharmacology, Karmanos Cancer Institute at Wayne State University, Detroit, MI 48201, USA.
Abstract:
Poly(ADP-ribose) polymerase inhibitors are an exciting new class of antineoplastic agents that impair the ability of cells to recover from DNA damage. They are most effective in the setting of inherent DNA repair defects, such as in cancers resulting from BRCA gene mutations, or in the setting of DNA-damaging chemotherapeutic agents. This article reviews the background and development of these agents in the laboratory, as well as the rationale for the biologic correlative studies used in clinical trials. The most recent data from the clinical trials of olaparib (AZD2281, KU-0059436), BSI-201, AG014699, ABT-888, and INO-1001 and descriptions of ongoing studies are also presented.
Insights
Poly(ADP-ribose) polymerase inhibitors are novel antineoplastic agents that enhance cancer therapy by blocking DNA damage repair. They show promise in BRCA-mutated cancers and when combined with chemotherapy.
Area of Science:
- Oncology
- Molecular Biology
- Pharmacology
Background:
- Poly(ADP-ribose) polymerase (PARP) inhibitors represent a new class of anticancer drugs.
- These agents disrupt cellular DNA damage repair mechanisms.
- PARP inhibitors are particularly effective in cancers with existing DNA repair deficiencies, like BRCA mutations, or when used with DNA-damaging chemotherapy.
Purpose of the Study:
- To review the development and laboratory background of PARP inhibitors.
- To discuss the rationale behind biologic correlative studies in clinical trials.
- To present recent clinical trial data and ongoing studies of specific PARP inhibitors.
Main Methods:
- Review of preclinical and clinical research on PARP inhibitors.
- Analysis of biologic correlative studies in clinical trials.
- Presentation of data from clinical trials involving olaparib, BSI-201, AG014699, ABT-888, and INO-1001.
Main Results:
- PARP inhibitors impair cellular recovery from DNA damage.
- Clinical trials are evaluating the efficacy of various PARP inhibitors.
- Specific agents like olaparib are showing promise in ongoing studies.
Conclusions:
- PARP inhibitors are a significant advancement in cancer treatment.
- Their efficacy is linked to DNA repair defects and combination chemotherapy.
- Further clinical studies are essential to define their role in oncology.
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