Emerging Strategies in Treating Double Hit Lymphomas

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Double hit lymphomas (DHLs) are a new category in the World Health Organization newest classification for lymphoid malignancies. DHL encompasses various histologies of lymphomas where the MYC oncogene and either BCL2 or BCL6 oncogenes are present concomitantly. Several observational studies and retrospective series have demonstrated that patients with DHL carry a poor prognosis and respond less and for a shorter duration to standard R-CHOP (rituximab, cyclophosphamide, vincristine, adriamycin, and prednisone). These studies have also proposed that dose intensification (with Burkitt-like regimens such as DA-EPOCH-R [dose-adjusted rituximab, etoposide, vincristine, Adriamycin, cyclophosphamide, and prednisone]) might offer patients with DHL better outcomes and improved prognosis. In this timely review, we discuss incidence of DHL, testing implications of MYC translocation, current treatment strategies, and future directions. Understanding this entity and its therapeutic consequences is essential to improve patients' outcomes.

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