Emerging treatments
Venetoclax
Venetoclax is an oral B-cell lymphoma-2 (BCL-2) inhibitor. In a phase 2 trial of 32 patients (all patients MYD88 L265P-mutated; 17 with CXCR4 mutations; 16 previously exposed to Bruton's tyrosine kinase [BTK] inhibitors), overall, major, and very good partial response rates were 84%, 81%, and 19%, respectively.[113] Response to venetoclax was durable, with median progression free survival of 36 months.[114]
Pirtobrutinib
Pirtoburinib, a non-covalent third-generation BTK inhibitor, has been granted accelerated approval for patients with chronic lymphocytic leukaemia/small lymphocytic lymphoma who have received at least two prior lines of therapy, including a BTK inhibitor and a BCL-2 inhibitor.[115][116] A single-arm, open-label, phase 2 study to evaluate the safety and efficacy of venetoclax combined with pirtobrutinib in participants with symptomatic Waldenström's macroglobulinaemia with previously treated disease, is currently recruiting.[117]
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