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Targeting the Phosphatidylinositol-3-kinase Pathway in Gastric Cancer: Can Omics Improve Outcomes?
Phu Tran1, Cham Nguyen2, Samuel J Klempner3,4
1Division of Hematology-Oncology, University of California Irvine, Orange, CA, USA.
Abstract:
Phosphatidylinositol-3-kinase (PI3K) pathway signaling is an established oncogenic signal transduction pathway implicated in multiple malignancies. Therapeutic targeting of PI3K pathway components has improved outcomes in chronic lymphocytic leukemia, kidney cancer, breast cancer, and neuroendocrine tumors. Gastric cancers harbor some of the highest rates of oncogenic alterations in PI3K but attempts to translate this genomic observation have met with limited clinical success and novel approaches are needed. In the following review we discuss PI3K signaling, previous preclinical and clinical investigations in gastric cancer, and discuss future strategies aimed at overcoming resistance and improving efficacy. Identification and refinement of molecular tumor subtypes, development of predictive biomarkers along, and rational drug combination strategies are key to capitalizing on the therapeutic potential of PI3K pathway directed therapies in gastric cancers.
Insights
Targeting the Phosphatidylinositol-3-Kinase (PI3K) pathway shows promise in gastric cancers. Novel strategies are needed to overcome resistance and improve treatment efficacy for this malignancy.
Area of Science:
- Oncology
- Molecular Biology
- Cancer Signaling Pathways
Background:
- Phosphatidylinositol-3-Kinase (PI3K) pathway is a key oncogenic pathway in many cancers.
- PI3K pathway alterations are frequent in gastric cancer, yet clinical success has been limited.
- Existing PI3K-targeted therapies have shown efficacy in other malignancies.
Approach:
- Review of PI3K signaling mechanisms in cancer.
- Analysis of preclinical and clinical studies of PI3K-targeted therapies in gastric cancer.
- Discussion of challenges and future directions for PI3K pathway-directed treatments.
Key Points:
- Gastric cancers exhibit high rates of PI3K pathway alterations.
- Translating PI3K pathway alterations into effective therapies for gastric cancer remains a challenge.
- Overcoming therapeutic resistance is crucial for improving patient outcomes.
Conclusions:
- Refining molecular subtypes and developing predictive biomarkers are essential.
- Rational drug combination strategies are key to enhancing PI3K-targeted therapy efficacy.
- Future research should focus on novel approaches to exploit the therapeutic potential of the PI3K pathway in gastric cancer.
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