New Trials in Leukemia/Lymphoma: Could Your Patient Benefit?

Several clinical trials in leukemia and lymphoma have started enrolling recently. Maybe one of your patients could benefit from taking part?

Hematological malignancy scheduled for a human leukocyte antigen–mismatched unrelated donor transplant. Adult patients in this situation who are younger than 66 years may be eligible for a randomized, open-label, phase 2 study run by the Center for International Blood and Bone Marrow Transplant Research.

The purpose of the study is to test whether cyclophosphamide, which is given to prevent a dreaded complication of stem cell transplantation called graft-versus-host disease, can be safely reduced without increasing infection or reducing protection. All participants will receive cyclophosphamide on days 3 and 4 post transplant. One group will receive a reduced dose of cyclophosphamide (25 mg/kg per dose), and the other will be given a usual dose (37.5 mg/kg).

Sites in Michigan, Missouri, Oregon, Virginia, and Washington started recruiting for 190 participants in December 2023. Study centers in Florida, Massachusetts, New York, and Wisconsin are also planned. Infection-free survival is the primary endpoint, and overall survival is a secondary measure. Quality of life (QoL) is not recorded. More details at clinicaltrials.gov

Untreated chronic lymphocytic leukemia/small lymphocytic lymphoma (CLL/SLL). Adults who are newly diagnosed with this type of cancer and have active disease may wish to consider a randomized, open-label, phase 3 trial testing an experimental Bruton tyrosine kinase (BTK) inhibitor, nemtabrutinib (from Merck Sharp & Dohme), against standard-of-care BTK inhibitors ibrutinib (Imbruvica) and acalabrutinib (Calquence).

BTK inhibitors target B-cell proliferation in B-cell cancers such as CLL/SLL and allow for chemotherapy-free treatment of some hematological malignancies. In this study, until disease progression, unacceptable toxicity, or another reason for discontinuation occurs, participants will take daily oral nemtabrutinib, ibrutinib, or acalabrutinib.

The study opened in December 2023 in Pennsylvania, Washington, Taiwan, Israel, and the United Kingdom seeking 1200 participants. The primary outcomes are objective response rate and progression-free survival. Overall survival is a secondary outcome, and QoL is not measured. More details at clinicaltrials.gov

Relapsed or refractory leukemia with a KMT2A-gene rearrangement (KMT2A-r). Children aged 1 month to younger than 6 years with this diagnosis may be able to join an open-label, nonrandomized, Children’s Oncology Group phase 2 study to determine the most tolerable and/or effective dose of an experimental oral drug called revumenib when added to chemotherapy.

KMT2A-gene alterations are associated with a poor prognosis in leukemia. These alterations cause blood cells to dedifferentiate and start proliferating uncontrollably as leukemia cells. The expression of the damaged KMT2A gene relies on a protein called menin. Revumenib, from Syndax Pharmaceuticals, blocks menin and prevents expression of KMT2A.

Children in the study will receive two different regimens of revumenib in combination with chemotherapy for up to a year, or until disease progression or unacceptable toxicity, and will then be followed for up to 5 years. Trial centers in 12 US states opened their doors in January 2024 looking for 78 participants. Toxicities and minimal residual disease are the primary outcomes; overall survival is a secondary outcome, and QoL is not assessed. More details at clinicaltrials.gov

Previously untreated follicular lymphoma or diffuse large B-cell lymphoma. Adults with one of these types of lymphoma may be eligible for one of three open-label, randomized, phase 3 trials testing odronextamab (from Regeneron). This bispecific antibody is designed to ‘lock together’ CD20 on cancer cells with CD3-expressing cancer-killing T cells. It has shown anti-lymphoma activity in heavily pretreated patients.

Late in 2023, three phase 3 trials turned the spotlight on treatment-naive patients and started recruiting 2115 participants to assess odronextamab in this setting. The trial OLYMPIA-1 will compare odronextamab with standard-of-care rituximab (Rituxan) plus chemotherapy in follicular lymphoma. OLYMPIA-2 will test the drug in combination with chemotherapy, also in follicular lymphoma. OLYMPIA-3 will evaluate odronextamab plus chemotherapy against rituximab and chemotherapy in people with large B-cell lymphoma.

All study drugs, including odronextamab, will be administered by intravenous infusion, and participants will be followed for up to 5 years. Research centers across eight US states and Australia, Czechia, France, Italy, Poland, Spain, Turkey, and Thailand are currently accepting participants for the three trials. The primary outcomes are various measures of toxicity and complete response at 30 months in the follicular lymphoma studies and toxicity and progression-free survival in large B-cell lymphoma. All three trials are measuring overall survival and QoL as secondary endpoints.

Previously untreated stage II, III, or IV follicular lymphoma. Adults with this type of cancer may be eligible to participate in a randomized, open-label, phase 3 study testing whether an experimental therapy called epcoritamab (from AbbVie) improves disease response and is tolerable when added to standard therapy. For up to 120 weeks, one group of participants will receive a combination of intravenous rituximab and oral lenalidomide (Revlimid), while a second group will also receive subcutaneous injections of epcoritamab. Some participants may be offered investigators’ choice of chemotherapy as well.

Sites across Iowa, Maryland, Missouri, Ohio, Washington, and Montana started welcoming their 900 participants in February 2024. The primary outcome is complete response at 30 months. Overall survival and QoL are secondary outcomes. More details at clinicaltrials.gov

Relapsed or refractory mantle cell lymphoma. Adults facing one of these clinical scenarios can join an Academic and Community Cancer Research United open label, phase 2 trial examining the effectiveness of combining tafasitamab (Monjuvi), lenalidomide, and venetoclax (Venclexta) for such patients.

Frontline therapy does not cure mantle cell lymphoma, and continued relapses are common. In this situation, treatments can include acalabrutinib, ibrutinib, stem cell transplantation, venetoclax, lenalidomide, and rituximab.

In this study, participants will take venetoclax and lenalidomide daily and receive intravenous tafasitamab every 2 weeks after an initial ramp-up period as per clinic standards. Participants will be followed for 5 years after entering the trial. The Mayo Clinic in Rochester, Minnesota, began recruiting the planned 100 trial participants in January 2024. The primary outcome is objective response rate; overall survival is a secondary outcome, and QoL will not be tracked. More details at clinicaltrials.gov

All trial information is from the National Institutes of Health US National Library of Medicine (online at clinicaltrials.gov).

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