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Zanubrutinib for treating Waldenstrom's macroglobulinaemia

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

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Zanubrutinib for treating Waldenstrom's macroglobulinaemia (WM)

Zanubrutinib is a next-generation Bruton tyrosine kinase (BTK) inhibitors that was developed to achieve BTK inhibiting efficacy while reducing the off-target adverse events documented with ibrutinib therapy

  • has high specificity for the BTK adenosine triphosphate binding site for cysteine 481, zanubrutinib covalently binds to this site, resulting in irreversible, sustainable kinase inhibition
  • ibrutinib, showed great efficacy in treating WM
    • however, response rates were dependent on whether patients had the CXCR4 mutation, a molecular aberration that may confer resistance to BTK inhibitors
    • ibrutinib's toxicities, most notably hypertension and atrial arrhythmia, led to dose reductions or discontinuation
    • toxicity profile of ibrutinib can be attributed to the inhibition of additional kinases that are structurally related to BTK

NICE state:

  • Zanubrutinib is recommended as an option for treating Waldenstrom's macroglobulinaemia in adults who have had at least 1 treatment, only if:
    • bendamustine plus rituximab is also suitable and
    • the company provides it according to the commercial arrangement

Reference:

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