(March 2, 2017, 4:08 PM EST) -- KNOXVILLE, Tenn. — The fact that other insurers might accept proton beam therapy as a treatment for prostate cancer does not save a man’s challenge to his insurer’s rejection of the treatment as experimental, a federal judge in Tennessee held Feb. 15 (Donald K. Turner v. Alcoa Inc., et al., No. 15-270, E.D. Tenn., 2017 U.S. Dist. LEXIS 21092)....