In a move likely to end the multidistrict litigation over Viagra, a federal judge struck all the plaintiffs’ causation experts in cases alleging the erectile dysfunction medication increased the progression of melanoma.

In a Monday order, U.S. District Judge Richard Seeborg of the Northern District of California tossed out three experts, concluding that, unlike the experts evaluating similar studies about the herbicide Roundup, they did not present “a faithful application of an accepted methodology.”