ArticleOrphanet journal of rare diseases2026
Breaking diagnostic and therapeutic barriers in intravascular large B-cell lymphoma: A 13-year real-world study from China.
Article in Orphanet journal of rare diseases, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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7 authors.
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Abstract
backgroundIntravascular large B-cell lymphoma (IVLBCL) is an ultra-orphan disease (incidence 0.095/million/year) with dismal prognosis due to delayed diagnosis and limited therapeutic options. We aimed to evaluate a novel diagnostic algorithm and the efficacy of zanubrutinib-containing therapy in a real-world Chinese cohort.
methodsThis single-center retrospective study enrolled 54 IVLBCL patients (2010–2022). Diagnostic approaches evolved from PET/CT-guided biopsy to a combination of serum interleukin-10 (IL-10, cut-off 95.65 pg/mL), random skin biopsy (RSB), and circulating tumor DNA (ctDNA) profiling. Treatment regimens shifted from R-CHOP to methotrexate-based therapy (MTX), then to zanubrutinib plus R-CHOP (ZR-CHOP).
resultsThe cohort exhibited distinct features: 35.2% Asian-variant IVLBCL, 50% CNS involvement, and 22.9% PET/CT negativity. IL-10 combined with RSB enabled the diagnosis of 11 PET/CT-negative patients who would have otherwise remained undiagnosed. ctDNA revealed MYD88 L265P (11/17, 65%) and CD79B (7/17, 41%) variants. ZR-CHOP (n = 22) achieved significantly superior 2-year progression-free survival (PFS) compared to R-CHOP alone (n = 6) (90% vs. 30%; hazard ratio [HR] 0.031, P < 0.0001) and demonstrated 100% central nervous system (CNS) relapse-free survival. The efficacy of ZR-CHOP was comparable to that of methotrexate (MTX)-based therapy (n = 20; 2-year PFS 85%), despite a shorter median follow-up (20.1 vs. 38.0 months).
conclusionsIn this largest Asian IVLBCL cohort to date, IL-10 + RSB + ctDNA significantly improved diagnostic accuracy. Zanubrutinib demonstrated promising efficacy, particularly in CNS involvement, offering a pragmatic solution for this orphan disease.
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