Recently, Merck have been on a roll in the immuno-oncology space, with the announcement that their anti-PD–1 antibody, pembrolizumab (Keytruda), beat out BMS’s anti-CTLA4 antibody, ipilimumab (Yervoy) in a Phase 3 head-to-head frontline trial in metastatic melanoma. The two primary endpoints of OS and PFS were met and the trial will therefore be stopped early based on the IDMC recommendation. No further details are available until the presentation.

merck_logoThe data from the KEYNOTE–006 study is being presented at the annual American Association for Cancer Research (AACR) next month in the opening plenary session by Dr Antoni Ribas (UCLA).

While it’s nice to see evidence that one checkpoint inhibitor is potentially superior to another, in the long run, combinations are likely to be the best way forward.  This approach is more likely to yield improved responses in immunogenic tumours, but also to make non-immunogenic tumours more responsive, thereby improving patient outcomes further.

This begs the all important question – what hints from new emerging data can we glean that will help us figure out novel combination approaches with checkpoint inhibitors?

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