Brentuximab Vedotin and Crizotinib in Anaplastic Large-Cell Lymphoma

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Abstract

Systemic anaplastic large-cell lymphoma (ALCL) is a rare, mature T-cell non-Hodgkin lymphoma. Anaplastic large-cell lymphoma cells express the surface antigen CD30, and more than half express the anaplastic lymphoma kinase (ALK) protein. These 2 proteins provide unique therapeutic targets in ALCL. Remission rates in ALCL with combination chemotherapy are approximately 80%, but relapse after first-line therapy is common. Brentuximab vedotin is a US Food and Drug Administration–approved, antibody-drug conjugate that combines an anti-CD30 antibody with monomethylauristatin E, a potent antimicrotubule agent. Response rates to brentuximab vedotin in patients with relapsed/refractory ALK+ and ALK− ALCL have exceeded 80% with frequent complete responses and a median duration of response greater than 1 year. Brentuximab vedotin in combination with chemotherapy is being explored as a first-line therapy in ALCL. Crizotinib is an inhibitor of ALK tyrosine kinase that has been approved for the treatment of ALK+ non–small cell lung cancer. Successful treatment of ALK+ ALCL with crizotinib has been reported in pediatric patients and small case series leading to ongoing trials in relapsed/refractory ALCL. Brentuximab vedotin and crizotinib represent major advances in the treatment of ALK+ and ALK− ALCL and will likely result in marked improvement in prognosis for this subset of aggressive lymphomas.

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