cancers Article Establishment of a Novel In Vitro Model of Endometriosis with Oncogenic KRAS and PIK3CA Mutations for Understanding the Underlying Biology and Molecular Pathogenesis Mohammad Mahmud Hossain 1, Kentaro Nakayama 1,*, Kamrunnahar Shanta 1 , Sultana Razia 1, Masako Ishikawa 1, Tomoka Ishibashi 1, Hitomi Yamashita 1, Seiya Sato 1, Kouji Iida 1, Kosuke Kanno 1, Noriyoshi Ishikawa 2, Tohru Kiyono 3,* and Satoru Kyo 1 1 Department of Obstetrics and Gynecology, Shimane University Faculty of Medicine, Izumo 693-8501, Japan;
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[email protected] (T.K.) Citation: Hossain, M.M.; Nakayama, Simple Summary: Endometriosis is a common gynecological condition that causes pelvic pain and K.; Shanta, K.; Razia, S.; Ishikawa, M.; infertility. Despite having normal histological features, several cells bear cancer-associated somatic Ishibashi, T.; Yamashita, H.; Sato, S.; mutations that result in local tissue invasion but rarely metastasize.