Pirtobrutinib and Venetoclax in Waldenström Macroglobulinemia

Study Summary

This study is being done to examine the safety and effectiveness of pirtobrutinib combined with venetoclax as a possible treatment for participants with Waldenström Macroglobulinemia (WM). The names of the study drugs involved in this study are: * Pirtobrutinib (a Noncovalent Bruton Tyrosine Kinase (BTK) inhibitor) * Venetoclax (a BCL2 inhibitor)