P1014: OVERALL SURVIVAL IN PATIENTS WITH ADVANCED SYSTEMIC MASTOCYTOSIS RECEIVING AVAPRITINIB VERSUS MIDOSTAURIN OR CLADRIBINE. (23rd June 2022) - Reiter, A.; Gotlib, J.; Álvarez-Twose, I.; Radia, D. H.; Luebke, J.; Bobbili, P. J.; Wang, A.; Norregaard, C.; Dimitrijević, S.; Sullivan, E.; Louie-Gao, M.; Schwaab, J.; et al.