Safety and Feasibility Study for CNS-Relapse Prevention in High-Risk Diffuse Large B-cell Lymphoma With Thiotepa-based Autologous Stem Cell Transplant (CNS-PHLAT)

Description

A serious consequence of systemic diffuse large B-cell lymphoma (DLBCL) is secondary central nervous system (CNS) relapse, which occurs in approximately 5% of all patients. Many CNS relapses occur within the first year after completion of frontline treatment and are associated with significantly increased mortality; thus, it is important to tailor frontline treatment to provide prophylaxis against CNS relapse in those patients who are determined to be high-risk. Autologous stem cell transplantation (ASCT) is standard of care for patients with DLBCL who relapse one year or more after first remission, and it has been shown to improve progression-free survival for patients with primary CNS lymphoma. The four-drug BEAM regimen (carmustine, etoposide, cytarabine, and melphalan) is the preferred conditioning regimen for DLBCL patients undergoing ASCT; however, patients with primary CNS lymphoma receive thiotepa plus carmustine as their conditioning regimen due to its better CNS penetration

Trial Eligibility

Inclusion Criteria: * Newly diagnosed diffuse large B-cell lymphoma, large B-cell lymphoma transformed from underlying indolent lymphoma, or high-grade B-cell lymphoma. * At high risk for CNS relapse as defined by at least one of the criteria below: * CNS-IPI ≥ 4 * Kidney or adrenal involvement * Testicular involvement * Double hit lymphoma as defined by containing translocations of MYC gene together with rearrangement of BCL2 and/or BCL6. * Will receive a full course (6 cycles) of curative-intent anthracycline-based induction treatment and has not yet received more than 2 cycles at the time of screening. Can receive induction chemotherapy outside of Siteman if still compliant with study eligibility, laboratory studies, lumbar punctures, imaging, and other events. * Eligible for autologous stem cell transplant as determined by the treating physician. * Ages 18 to 75. * ECOG performance status ≤ 2. * Thiotepa and carmustine can cause fetal harm when administered to a pregnant person. For this reason, women of childbearing potential and men must agree to use adequate contraception prior to study entry, for the duration of study participation, and for 6 months after completion of study participation (for women) and 12 months after completion of study participation (for men). Should a woman become pregnant or suspect she is pregnant while participating in this study or should a man suspect he has fathered a child, s/he must inform the treating physician immediately. * Ability to understand and willingness to sign an IRB-approved written informed consent document. Legally authorized representatives may sign and give informed consent on behalf of study participants if patient is otherwise unable to sign for themselves or unable to understand consent document Exclusion Criteria: * Relapsed or refractory diffuse large B-cell lymphoma or high-grade B-cell lymphoma. * Diagnosis of primary CNS lymphoma. * Diagnosis of secondary CNS involvement at baseline. * Prior or concurrent malignancy whose natural history has the potential to interfere with the safety or efficacy assessment of the investigational regimen as determined by the PI. Patients with prior or concurrent malignancy that does NOT meet that definition are eligible for this trial. * Currently receiving any other investigational agents. * A history of allergic reactions attributed to compounds of similar chemical or biologic composition to thiotepa, carmustine, or other agents used in the study. * Pregnant and/or breastfeeding. Women of childbearing potential must have a negative pregnancy test within 7 days of study entry.

Study Info

Interventions

Locations Recruiting

Interested in joining this trial?

Our dedicated patient navigators are here to support you by reviewing the eligibility criteria to see if you might qualify for this trial.