Clinical Research Directory

Inclusion Criteria: * Diagnosis of acute lymphoblastic leukemia, lymphoblastic lymphoma, or mixed phenotype acute leukemia * Enrolled on INITIALL and no more than 10 days after initiation of post-INITIALL therapy * Post-INITIALL therapy is: * Standard of Care (SOC)/Non Protocol Treatment Plan (NPTP) as per Total therapy or * SJALL23T and not scheduled to receive venetoclax Exclusion Criteria: * Inability or unwillingness of research participant or legal guardian/representative to give written informed consent.