Romidepsin and Parsaclisib for the Treatment of Relapsed or Refractory T-Cell Lymphomas

This phase I trial finds the appropriate parsaclisib dose level in combination with romidepsin for the treatment of T-cell lymphomas that have come back (relapsed) or that have not responded to standard treatment (refractory). The other goals of this trial are to find the proportion of patients whose cancer is put into complete remission or significantly reduced by romidepsin and parsaclisib, and to measure the effectiveness of romidepsin and parsaclisib in terms of patient survival. Romidepsin blocks certain enzymes (histone deacetylases) and acts by stopping cancer cells from dividing. Parsaclisib is a PI3K inhibitor. The PI3K pathway promotes cancer cell proliferation, growth, and survival. Parsaclisib, thus, may stop the growth of cancer cells by blocking PI3K enzymes needed for cell growth. Giving romidepsin and parsaclisib in combination may work better in treating relapsed or refractory T-cell lymphomas compared to either drug alone.