P686: A PHASE 1 FIRST IN-HUMAN STUDY OF BGB-16673, A BRUTON TYROSINE KINASE PROTEIN DEGRADER, IN PATIENTS (PTS) WITH B-CELL MALIGNANCIES (TRIAL IN PROGRESS). (23rd June 2022) - Tam, C. S.; Cheah, C.; Stevens, D. A.; By, K.; Chen, X.; Tariq, B.; Vosganian, G. S.; Huang, J.; Alwan, M.