Clinical Benefit of Pembrolizumab in Lynch Syndrome‐Associated Advanced Ovarian Cancer With Germline MSH6 Variant: A Case Report - Tomomi Yokozawa; Sayako Nakagawa; Yukio Suzuki; Aya Tokinaga‐Uchiyama; Katsuyuki Konnai; Hiroto Narimatsu; Yukihiko Hiroshima; Haruya Saji (Clinical Case Reports, 2026)