PFS analyses for the RT and CMT cohorts. (A-B) PFS in patients with 1 to 2 sites vs >2 sites of involvement receiving RT (P = .02) and CMT (P = .81). (C-D) For patients who received RT (C) or CMT (D), a forest plot of the multivariable analysis for PFS, including factors significant in univariable analysis (P < .05).