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Targeting homologous recombination addicted tumors: challenges and opportunities
Talia Golan1, Jonathan R Brody2,3
1Oncology Institute, Chaim Sheba Medical Center and Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.
Abstract:
Recent advances in next generation sequencing (NGS) and molecular subtyping of tumors have opened the door to clinically available targeted therapies. Although the treatment of many solid tumors still rely on a steady regimen of non-targeted chemotherapeutic agents, it is becoming increasingly more apparent that certain tumors with defects in DNA damage repair (DDR) genes may be exquisitely sensitive to DNA damaging agents or therapies targeting key elements of this pathway such PARP1, ATR, or ATM. Still, for tumors with DDR defects the challenges are multi-fold including: (I) identifying these tumors in patients in time for a window of opportunity of treatment; (II) ensuring that these tumors are still reliant or addicted to this pathway; and (III) making sure these tumors are matched with the precise treatment option. Herein, we will discuss the opportunities, challenges, and future of targeting a subset of DDR-defective tumors.
Insights
Targeting DNA damage repair (DDR) defects in tumors offers new therapeutic avenues. Challenges include timely identification, pathway dependency confirmation, and precise treatment matching for DDR-defective cancers.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Next-generation sequencing (NGS) and molecular tumor subtyping enable targeted therapies.
- Many solid tumors are treated with non-targeted chemotherapy.
- Tumors with DNA damage repair (DDR) gene defects may respond to specific DDR-targeting agents.
Purpose of the Study:
- To discuss the opportunities and challenges in targeting DDR-defective tumors.
- To explore the future of precision medicine for this subset of cancers.
Main Methods:
- Review of current literature on DDR pathways and targeted therapies.
- Analysis of challenges in clinical application of DDR-targeting strategies.
Main Results:
- Identification of DDR defects is crucial for therapeutic selection.
- Tumor addiction to DDR pathways needs to be confirmed.
- Matching patients with DDR defects to appropriate therapies is complex.
Conclusions:
- Targeting DDR defects represents a promising frontier in cancer treatment.
- Overcoming clinical challenges is essential for realizing the potential of these therapies.
- Future research should focus on refining patient selection and treatment strategies.
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