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Probiotics linked to poorer response to cancer immunotherapy in skin cancer

In melanoma patients, taking over-the-counter probiotic supplements was associated with a 70% lower chance of response to cancer immunotherapy treatment with anti-PD-1 checkpoint inhibitors, according to a preliminary study from the Parker Institute for Cancer Immunotherapy and MD Anderson Cancer Center. The results were presented at the American Association for Cancer Research 2019 Annual Meeting in Atlanta.