DLBCL associated NOTCH2 mutations escape ubiquitin-dependent degradation and promote chemo-resistance. (PubMed, Blood)
Up to 40% of DLBCL patients display refractory disease or relapse after standard chemotherapy treatment (R-CHOP; rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisone), leading to significant morbidity and mortality. Targeting CHOP-resistant DLBCL tumors with the Phase 3 clinical trial molecules nirogacestat, a selective g-secretase inhibitor, and ipatasertib, a pan-AKT inhibitor, synergistically promotes DLBCL death. These findings establish the rationale for therapeutic strategies aimed at targeting the oncogenic pathway activated in KLHL6- or NOTCH2-mutated DLBCL.