It is day 50 since our "health insurance" Regence BlueCross BlueShield of Utah @regenceutah began denying coverage for the critical cancer drug Perjeta in my wife Raven's breast cancer treatment, as prescribed by her oncologist, with full FDA approval since 2017, with clinical trials showing clear benefits, and following every major clinical guideline in the world (NCCN, ASCO, NICE, ESMO, JBCS). Yet Regence says it is "investigational." What do you think about this, ChatGPT?