RecruitingPhase 1Drug trialA Phase I Trial of Combination Gemcitabine and Nab-Sirolimus in Advanced Leiomyosarcomas or Advanced Soft-Tissue Sarcomas With TSC2 or TSC1 Loss-of-function Mutations or DeletionsTo find a recommended dose of gemcitabine and nab-sirolimus that can be given in combination to participants with advanced leiomyosarcomas or soft-tissue sarcomas.