Why didn’t Ipilimumab plus Chemo work in Metastatic Urothelial Cancer?
One of the interesting immuno-oncology presentations at the recent ASCO Genitourinary Cancers Symposium held in San Francisco from Jan 7 – 9, 2016 was presented by Dr Matt Galsky (Mount Sinai, New York).
Dr Galsky presented the results of a phase II trial of gemcitabine plus cisplatin plus ipilimumab in patients with metastatic urothelial cancer: HCRN GU-148 (Abstract 357).
The trial failed to reach its primary endpoint of showing a 20% increase in 1 year overall survival by the addition of ipilimumab compared to historical data for Gem + Cis in this patient population.
Many in the media don’t write up what is in essence “negative” data, but this trial is highly informative for those with an interest in urothelial cancer and in the optimal strategy for cancer immunotherapy. The GU16 discussant Dr Elizabeth Plimack (Fox Chase) raised many questions that merit consideration by those in the field.
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