#SITC18: An­oth­er un­der­whelm­ing per­for­mance for STING dam­ages Aduro’s al­ready suf­fer­ing share price

Aduro Biotech ex­ecs $ADRO made as much as they pos­si­bly could of the two par­tial re­spons­es re­searchers tracked among 40 heav­i­ly pre-treat­ed can­cer pa­tients in an ear­ly-stage study of their STING ther­a­py. But their de­fense at SITC wasn’t near­ly enough to save the Berke­ley, CA-based biotech from an­oth­er beat­ing at the hands of un­hap­py in­vestors.

Mer­ck set the stage at ES­MO last month when re­searchers ac­knowl­edged that their ri­val STING ther­a­py had no ef­fect on tu­mors as a monother­a­py, rais­ing ques­tions about the class and the drug at Aduro — which No­var­tis $NVS plunked down $200 mil­lion in cash to part­ner on. 

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