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Adding Metformin to docetaxel chemotherapy for metastatic castrate-resistant prostate cancer showed no benefit


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In short

Adding the diabetic medicine metformin to docetaxel chemotherapy for metastatic castrate-resistant prostate cancer showed no benefit.

A different trial is due to report on using metformin with docetaxel for non-metastatic castrate-resistant prostate cancer in 2024.


Dr Marc Martin presented the results of the TAXOMET clinical trial at the ASCO (American Society of Clinical Oncology) 2019 meeting.

The reasons for running the trial were:

  • Metformin decreases prostate cancer incidence in a large cohort study (OR 0.84, 95% CI 0.74-0.96)1
  • Metformin improves time to castration-resistance and survival in prostate cancer diabetic patients compared to non-metformin users2
  • Metformin may be an effective chemosensitizer for docetaxel in preclinical models3
  • It is a well-known antidiabetic molecular, low cost, and with minimal side effects


An account by Dr Zachary Klaassen is here:


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