A Global Study of the PETAL Consortium

This global study through the PETAL Consortium collects data and tests treatments for people with mature T-cell and NK-cell lymphomas (a group of rare and aggressive blood cancers). The study focuses on peripheral T-cell lymphoma (PTCL) subtypes, which are notoriously difficult to treat. **You may be eligible if...** - You have a confirmed diagnosis of a mature T-cell or NK-cell neoplasm (blood cancer) - Your cancer is untreated, relapsed, or no longer responding to treatment - Most PTCL subtypes are eligible **You may NOT be eligible if...** - You have T-cell large granular lymphocytic leukemia - You have cutaneous T-cell lymphoma (e.g., mycosis fungoides, Sézary syndrome) - You have primary cutaneous CD30+ disorders - You are a minor, unable to consent, pregnant, or incarcerated Talk to your doctor to see if this trial is right for you.