General Causation Experts Excluded in Viagra/Cialis Melanoma MDL

  • Order

SAN FRANCISCO — A California federal judge has excluded the opinions of plaintiffs’ causation experts in the Viagra/Cialis multidistrict litigation, ruling that they failed to prove an association between use of the drugs and progression of melanoma.

On Jan. 13, Judge Richard Seeborg of the U.S. District Court for the Northern District of California explained that while the studies cited by the experts may be subject to differing interpretations as to biological plausibility, or as to how strong the evidence is for an actual association, “there simply is no interpretation by anyone other than plaintiffs’ experts that supports general causation.”


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