“…The incremental survival benefit in patients with stage IVB with the addition of IMT after applying propensity score analysis extends to prior retrospective studies [ 5 , 10 , 16 , 20 , 21 , 23 ] and is consistent with results from phase II and phase III clinical trials [ 23 , 24 , 26 , 27 , 28 , 29 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 44 , 45 ]. Outside of clinical trials, Perkins et al [ 25 ] reported a 24-month improvement in overall survival following CT + EBRT (whole pelvic radiation) vs. CT in a small multi-site retrospective cohort study with a median follow-up of 9 months.…”