CD79B.md
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In an inducible mouse model of MYD88-driven DLBCL, CD79B mutations did not accelerate lymphomagenesis but demonstrated an increased sensitivity to pharmacological BTK inhibition.[@flumannInducibleCd79bMutation2024]
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In a retrospective analysis, younger patients with MCD DLBCL that were treated with ibrutinib had significantly better outcomes.[@wilsonEffectIbrutinibRCHOP2021]
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The most common hotspot mutation in CD79B is at the tyrosine residue 196 (Y196).
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-This and other common mutations primarily occur in the immunoreceptor tyrosine-based activation motif (ITAM) domain and prevent the negative regulatory feedback provided by Lyn kinase thereby enhancing BCR signaling.[@kimCD79BMYD88Mutations2014; @davisChronicActiveBcellreceptor2010]
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+This and other common mutations primarily occur in the immunoreceptor tyrosine-based activation motif (ITAM) domain and prevent the negative regulatory feedback provided by Lyn kinase thereby enhancing BCR signaling.[@kimCD79BMYD88Mutations2014; @davisChronicActiveBcellreceptor2010] CD79B is both a recurrent oncogenic signalling node in ABC-DLBCL and an ideal lineage-restricted, rapidly internalizing surface antigen. The antibody–drug conjugate polatuzumab vedotin exploits CD79B surface expression to deliver a cytotoxic payload to malignant B cells, independent of CD79B mutation status[@assiPolatuzumabVedotinCurrent2021].
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