AstraZeneca Clinical Hold Could Be No Real Concern, Or Very Bad For AZ And BMS

The partial clinical hold placed on a combination trial of AstraZeneca’s PD-L1 inhibitor durvalumab and CTLA-4 inhibitor tremelimumab could be a portent of problems for Bristol-Myers Squibb’s PD-1/CTLA-4 combination trials – or it could be related to the head and neck cancer setting.

The announcement that AstraZeneca PLC’s head and neck cancer program for durvalumab and durvalumab/tremelimumab has been placed on a clinical hold by the FDA has raised concerns about the additive toxicity of immuno-oncology combinations, which have been the focus of development across the industry.

AstraZeneca announced Oct. 27 that FDA had placed a “partial clinical hold on the enrollment of new patients with head...

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