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Cyclin-dependent kinase pathways as targets for women's cancer treatment
1David Geffen School of Medicine, University of California, Los Angeles, California, USA.
Purpose Of Review:
In this article, we not only review the preclinical and clinical studies of cyclin-dependent kinase (CDK) 4/6 inhibitors in breast cancer, liposarcoma, mantel cell lymphoma, melanoma and germ cell tumors, but also examine promising preclinical data in glioblastoma, renal and ovarian cancer models that may provide directions for future development.
Recent Findings:
Targeting CDKs has been the focus of considerable basic science and clinical research. The CDK 4/6 inhibitors are a novel class of therapeutics that target the CDK 4/6 kinases that promote transition through the cell cycle. Currently, palbociclib (PD0332991, Pfizer), abemaciclib (LY2835219, Lilly) and ribociclib (LEE011, Novartis) are being investigated in clinical trials. These oral agents offer the hope of clinical efficacy in many tumor types, and have been associated with minimal toxicity. Amplification/overexpression of cyclin D, loss of CDKN2A (p16) and amplification/overexpression of CDK4 are proposed biomarkers of improved response to CDK4/6 inhibition.
Summary:
Palbociclib, abemaciclib and ribociclib have demonstrated very promising clinical activity in breast cancer, liposarcoma, mantel cell lymphoma and melanoma. Moreover, CDK4/6 inhibitors have shown promising preclinical activity in glioblastoma, renal and ovarian cancer models that may provide directions for their future clinical development. Further preclinical and clinical research is needed to better understand mechanisms of resistance and develop rational combination therapies with other targeted agents.
Insights
Cyclin-dependent kinase (CDK) 4/6 inhibitors show promise in treating various cancers, including breast cancer and melanoma. Further research is ongoing to explore their efficacy in other tumor types and overcome resistance mechanisms.
Area of Science:
- Oncology
- Molecular Biology
- Pharmacology
Background:
- Cyclin-dependent kinases (CDKs) regulate cell cycle progression.
- CDK 4/6 inhibitors represent a novel therapeutic class targeting cell cycle transition.
- Targeting CDKs is a significant focus in cancer research.
Purpose of the Study:
- To review preclinical and clinical studies of CDK 4/6 inhibitors in various cancers.
- To examine preclinical data for future development directions in glioblastoma, renal, and ovarian cancers.
Main Methods:
- Review of preclinical and clinical studies on CDK 4/6 inhibitors.
- Analysis of proposed biomarkers for response, including cyclin D, CDKN2A (p16), and CDK4.
- Investigation of novel therapeutic agents like palbociclib, abemaciclib, and ribociclib.
Main Results:
- Palbociclib, abemaciclib, and ribociclib demonstrate clinical activity in breast cancer, liposarcoma, mantel cell lymphoma, and melanoma.
- These oral CDK 4/6 inhibitors are associated with minimal toxicity.
- Biomarkers such as cyclin D overexpression and CDKN2A loss correlate with response.
Conclusions:
- CDK 4/6 inhibitors exhibit significant promise in multiple cancer types.
- Preclinical data suggest potential for glioblastoma, renal, and ovarian cancer treatment.
- Further research is essential to understand resistance and develop combination therapies.
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