BTK and Hypertension: Although landmark trials, including the ACE-CL-001 and ELEVATE-RR trials, have attempted to evaluate the incidence of hypertension as a secondary outcome, due to the only more recent emergence of the relevance of hypertension with BTK inhibitor therapy, without untreated controls, the measures, timing, and implementation of contemporary blood pressure definitions were not well established [1, 11, 18, 27, 28].