We report the initial safety, efficacy and correlative analysis of acalabrutinib in combination with axicabtagene ciloleucel (axi-cel) in R/R B-cell lymphoma….We conducted a phase I/II, open-label trial (NCT04257578) involving adult patients meeting FDA-approved criteria for axi-cel; this included patients with R/R CD19+ large B-cell (LBCL) and follicular lymphoma (FL) with measurable disease....Acalabrutinib successfully bridged most patients in this trial when given concurrently with axi-cel and safely maintained high CR rates.