(September 22, 2015, 2:19 PM EDT) -- PITTSBURGH — An expert’s omission of proffered price-influencing variables in testimony in an antitrust class action does not render his regression analysis “irrelevant,” a Pennsylvania federal judge ruled Sept. 18, denying a motion to exclude that testimony (Resco Prods., Inc. v. Bosai Minerals GRP., et al., No. 06-235, W.D. Pa.; 2015 U.S. Dist. LEXIS 124930)....