RecruitingDrug trialPhase Ib/II Trial of Cladribine/Ruxolitinib/Venetoclax in Patients With Relapsed/Refractory T-cell Prolymphocytic LeukemiaThe goal of this clinical research study is to learn if the combination of ruxolitinib with cladribine and venetoclax can help to control the disease in patients with R/R T-PLL.