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Translational Medicine / 转化医学DLBCL molecular subtypes, ABC vs GCB, NF-κB signaling, ibrutinib, BCR signaling

Georg Lenz

格奥尔格·伦茨

MD

🏢University Hospital Münster / University of Münster(明斯特大学医院 / 明斯特大学)🌐Germany

Director, Department of Medicine A (Hematology, Oncology, Pneumology); Professor of Medicine, University of Münster医学A科(血液学、肿瘤学、肺病学)主任;明斯特大学医学教授

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Key Papers
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Awards
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Key Contributions

👥Biography 个人简介

Georg Lenz, MD is Director of the Department of Medicine A (Hematology, Oncology, Pneumology) and Professor of Medicine at the University of Münster, Germany, where he leads a world-leading research program in DLBCL molecular biology and targeted therapy. He is internationally recognized for his groundbreaking work — conducted in part during his tenure at the National Cancer Institute with Louis Staudt — characterizing the ABC (activated B-cell) versus GCB (germinal center B-cell) molecular subtypes of DLBCL, including the identification of chronic active BCR signaling, MYD88 L265P mutation, and CD79B mutation as key oncogenic drivers of ABC-DLBCL. His landmark studies in Science (2008) and NEJM demonstrated that constitutive activation of the BCR signaling cascade and NF-κB pathway is essential for ABC-DLBCL cell survival, established NF-κB addiction as a hallmark of this subtype, and provided the mechanistic rationale for BTK inhibitor trials in DLBCL. He was a co-investigator in the PHOENIX trial evaluating ibrutinib plus R-CHOP in newly diagnosed ABC-DLBCL. At Münster, Dr. Lenz has extended this work into comprehensive DLBCL genomic subclassification (contributing to the LymphGen classification of DLBCL genetic subtypes), novel BCR-targeting strategies, and translational-clinical trial integration.

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🧪Research Fields 研究领域

DLBCL Molecular Subtypes — ABC vs. GCB Classification and Oncogenic MechanismsDLBCL分子亚型——ABC与GCB分类及致癌机制
B-Cell Receptor (BCR) Signaling, NF-κB Pathway, and Targeted Therapy in DLBCLB细胞受体(BCR)信号通路、NF-κB通路与DLBCL靶向治疗
Ibrutinib in ABC-DLBCL — PHOENIX Trial and BTK-Targeted CombinationsABC-DLBCL中的伊布替尼——PHOENIX试验与BTK靶向组合
Genetic Subclassification of DLBCL — LymphGen and Cluster-Based TaxonomyDLBCL基因亚分类——LymphGen与基于聚类的分类学
Oncogenic Cooperation of MYD88/CD79B Mutations in Activated B-Cell DLBCL活化B细胞DLBCL中MYD88/CD79B突变的致癌协同作用

🎓Key Contributions 主要贡献

Chronic Active BCR Signaling and MYD88/CD79B Mutations as Drivers of ABC-DLBCL

Made landmark discoveries (Science 2008, Nature 2010, NEJM) demonstrating that ABC-DLBCL is driven by constitutive chronic active B-cell receptor signaling — an "antigen-independent" oncogenic activation mechanism — and identifying MYD88 L265P and CD79A/B mutations as the key genetic lesions sustaining this pathway. These findings defined the molecular identity of ABC-DLBCL, established BTK as the critical signaling node, and provided the mechanistic foundation for the clinical development of ibrutinib and other BCR pathway inhibitors in DLBCL.

NF-κB Pathway Addiction in ABC-DLBCL and Therapeutic Implications

Characterized the constitutive NF-κB activation in ABC-DLBCL through multiple mechanisms (CARD11 mutations, A20 inactivation, TRAF2/TRAF3 deletion, MYD88 mutation converging on IKK complex) and demonstrated that ABC-DLBCL cells undergo apoptosis upon NF-κB inhibition, establishing "NF-κB addiction" as a druggable vulnerability and rationalizing multiple clinical trials of IKK inhibitors, BTK inhibitors, and BCL-2 inhibitors in this subtype.

PHOENIX Trial — Ibrutinib plus R-CHOP in Newly Diagnosed ABC-DLBCL

Contributed as a co-investigator to the phase III PHOENIX trial evaluating ibrutinib plus R-CHOP versus R-CHOP in newly diagnosed non-GCB DLBCL, and provided translational leadership in interpreting the trial's results by demonstrating that younger patients with ABC-DLBCL (harboring MYD88 and CD79B co-mutations) derived significant benefit from ibrutinib addition, identifying a genetically defined subpopulation that may benefit from BTK inhibitor integration.

LymphGen Genetic Subclassification of DLBCL

Contributed to the development of the LymphGen probabilistic classifier (Nature Medicine 2020), which genetically subclassifies DLBCL into distinct clusters (MCD, BN2, N1, EZB, ST2, A53) based on co-occurring mutations, copy number alterations, and structural variants, providing a genetic taxonomy that links DLBCL subtypes to distinct pathogenesis and potential therapeutic vulnerabilities independent of the ABC/GCB transcriptional framework.

Representative Works 代表性著作

[1]

Oncogenic CARD11 mutations in human diffuse large B cell lymphoma

Science (2008)

Landmark study identifying CARD11 gain-of-function mutations in ABC-DLBCL that constitutively activate NF-κB, establishing the genetic basis for NF-κB addiction in this subtype.

[2]

Stromal gene signatures in large-B-cell lymphomas

New England Journal of Medicine (2008)

Identification of tumor microenvironment gene expression signatures in DLBCL that predict R-CHOP outcomes, demonstrating the prognostic role of the stromal and angiogenic components.

[3]

Chronic active B-cell-receptor signalling in diffuse large B-cell lymphoma

Nature (2010)

Foundational study identifying chronic active BCR signaling as the key oncogenic mechanism driving ABC-DLBCL survival, mechanistically validating BTK as a therapeutic target.

[4]

Genetic subtype-guided treatment of DLBCL: results from the phase 3 PHOENIX trial with ibrutinib

Journal of Clinical Oncology (2021)

Translational analysis of PHOENIX trial demonstrating that ABC-DLBCL with MYD88/CD79B co-mutations derives significant benefit from ibrutinib plus R-CHOP, defining a genetically responsive subpopulation.

🏆Awards & Recognition 奖项与荣誉

🏆EHA Scientific Achievement Award, Lymphoma Biology
🏆German Cancer Prize (Deutscher Krebspreis), Translational Category
🏆DFG (German Research Foundation) Heisenberg Professorship
🏆DGHO Ludwig Heilmeyer Award
🏆ESMO Award for Translational Research in Haematological Malignancies

📄Data Sources 数据来源

Last updated: 2026-04-06 | All information from publicly available academic sources

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