Antibiotic Use May Damper the Efficacy of Checkpoint Inhibitors
Posted: Sun Feb 26, 2017 9:45 am
"Use of antibiotics up to a month before treatment with a checkpoint inhibitor may decrease the efficacy of the immunotherapy agent, results of a retrospective analysis show. The analysis, presented during a presscast of the 2017 Genitourinary Cancers Symposium, raised suspicion of the relationship between gut microbiota and antibiotics and their effect on immune checkpoint blockade agents.1
"In patients with metastatic renal cell carcinoma (mRCC), patients who had received broad-spectrum antibiotics had a shorter median progression-free survival (PFS) rate when treated with checkpoint inhibitor immunotherapy than those who had not received antibiotics of 2.3 versus 8.1 months, respectively (P <.001). "
http://www.onclive.com/conference-cover ... inhibitors
“Immune based therapies for cancer may have a complex interplay with the host’s microbiome,” commented Pal, an assistant clinical professor in the Department of Medical Oncology and Therapeutics Research and co-director of the Kidney Cancer Program at City of Hope in Duarte, California. Antibiotics may influence the bacterial composition of our gut, and this could in turn impact how effective immune therapy is” - See more at: http://www.onclive.com/conference-cover ... OG2h1.dpuf
"In patients with metastatic renal cell carcinoma (mRCC), patients who had received broad-spectrum antibiotics had a shorter median progression-free survival (PFS) rate when treated with checkpoint inhibitor immunotherapy than those who had not received antibiotics of 2.3 versus 8.1 months, respectively (P <.001). "
http://www.onclive.com/conference-cover ... inhibitors
“Immune based therapies for cancer may have a complex interplay with the host’s microbiome,” commented Pal, an assistant clinical professor in the Department of Medical Oncology and Therapeutics Research and co-director of the Kidney Cancer Program at City of Hope in Duarte, California. Antibiotics may influence the bacterial composition of our gut, and this could in turn impact how effective immune therapy is” - See more at: http://www.onclive.com/conference-cover ... OG2h1.dpuf