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http://dx.doi.org/10.1182/bloodadvances.2024013955DOI Listing

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Article Synopsis
  • Patients with mantle cell lymphoma (MCL) who relapse are split into two groups: early and late progression, based on how long it's been since their diagnosis.
  • This study looked at treatment outcomes for 385 late-POD patients treated with two kinds of therapies: Bruton tyrosine kinase inhibitors (BTKi) and chemoimmunotherapy (CIT).
  • Findings showed that BTKi treatment led to longer survival without disease progression compared to CIT, suggesting it might be the better choice for these patients.
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MRD-driven treatment with venetoclax-R2 in mantle cell lymphoma: the Nordic Lymphoma Group MCL7 VALERIA trial.

Blood Adv

January 2024

Department of Immunology, Genetics and Pathology, Unit of Cancer Precision Medicine, Uppsala University, Uppsala, Sweden.

Despite improvements in treatment of mantle cell lymphoma (MCL), most patients eventually relapse. In this multicenter phase 1b/2 trial, we evaluated safety and efficacy of minimal residual disease (MRD)-driven venetoclax, lenalidomide, and rituximab (venetoclax-R2) in relapsed/refractory (R/R) MCL and explored the feasibility of stopping treatment in molecular remission. The primary end point was overall response rate (ORR) at 6 months.

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The transcription factor MYC is a well-described oncogene with an important role in lymphomagenesis, but its significance for clinical outcome in mantle cell lymphoma (MCL) remains to be determined. We performed an investigation of the expression of MYC protein in a cohort of 251 MCL patients complemented by analyses of structural aberrations and mRNA, in a sub-cohort of patients. Fourteen percent (n=35) of patients showed high MYC protein expression with >20% positive cells (MYChigh), among whom only one translocation was identified, and 86% (n=216) of patients showed low MYC protein expression.

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The outcome for patients with mantle cell lymphoma (MCL) has drastically improved with new treatments directed toward the tumor immune microenvironment, where macrophages play an important role. In MCL, the presence of M2 macrophages defined by CD163 expression in diagnostic biopsies has been associated with a worse prognosis. An alternative way to assess the abundance of M2 macrophages is by measuring the level of soluble CD163 in serum (sCD163).

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