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Updated: Jun 7, 2025

Performing Data Mining And Integrative Analysis Of Biomarker in Breast Cancer Using Multiple Publicly Accessible Databases
Published on: May 17, 2019
Using bioinformatics and artificial intelligence to map the cyclin-dependent kinase 4/6 inhibitor biomarker landscape
Kim Wager1, Yao Wang2, Andrew Liew1
1AI & Data Science, Oxford PharmaGenesis Ltd, Oxford, UK.
Abstract:
A cyclin-dependent kinase 4/6 (CDK4/6) inhibitor combined with endocrine therapy is the standard-of-care for patients with hormone receptor-positive/human epidermal growth factor receptor 2-negative advanced breast cancer. However, not all patients respond to the treatment, resistance often occurs and efficacy outcomes from early breast cancer trials have been mixed. To identify biomarkers associated with CDK4/6 inhibitor response or resistance, we combined bioinformatic-database analyses, artificial intelligence-assisted literature review, and manual literature review (Embase and OVID Medline; search window: January 2012-October 2022) to compile data to comprehensively describe the CDK4/6 inhibitor biomarker landscape. Based on these results, and validation by external experts, we identified 15 biomarkers of clinical importance (AR , AURKA, ERBB2, ESR1, CCNE1, CDKN1A/B, CDK2, CDK6, CDK7, CDK9, FGFR1/2, MYC, PIK3CA/AKT, RB1 and STAT3) that could guide future breast cancer research.
Insights
Identifying biomarkers for cyclin-dependent kinase 4/6 (CDK4/6) inhibitors is crucial for advanced breast cancer treatment. This study compiles key biomarkers to predict response and resistance, guiding future research.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Cyclin-dependent kinase 4/6 (CDK4/6) inhibitors plus endocrine therapy are standard for hormone receptor-positive/human epidermal growth factor receptor 2-negative advanced breast cancer.
- Treatment response is variable, and resistance frequently develops, necessitating predictive biomarkers.
Purpose of the Study:
- To comprehensively identify and describe biomarkers associated with response or resistance to CDK4/6 inhibitors in breast cancer.
- To guide future clinical research and therapeutic strategies.
Main Methods:
- Combined bioinformatic-database analyses, artificial intelligence-assisted literature review, and manual literature review (Embase, OVID Medline; Jan 2012-Oct 2022).
- Expert validation of identified biomarkers.
Main Results:
- Identified 15 clinically important biomarkers related to CDK4/6 inhibitor efficacy.
- Key biomarkers include AR, AURKA, ERBB2, ESR1, CCNE1, CDKN1A/B, CDK2, CDK6, CDK7, CDK9, FGFR1/2, MYC, PIK3CA/AKT, RB1, and STAT3.
Conclusions:
- The identified biomarker landscape provides critical insights into CDK4/6 inhibitor response and resistance mechanisms.
- These biomarkers can inform patient selection and guide the development of novel therapeutic approaches in breast cancer.
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