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Sienna Cancer Diagnostics: Matthew Hoskin, Carl Stubbings

Sienna Cancer Diagnostics announced Matthew Hoskin is stepping down as its CEO. He will be replaced by Carl Stubbings, currently a non-executive director at Sienna. The change is effective immediately. No reason was given for Hoskin's resignation. Stubbings was most recenlty CEO of BCAL, a private company developing breast cancer diagnostics.