Steps and time to first response assessment. Key phases of care before and after BsAb or CAR T treatment from referral to first response assessment. Note that timing of CAR T could be delayed or prolonged at several points, most commonly due to insurance authorization (eg, single-payer agreement negotiations) and the need for lead-in treatment in highly symptomatic patients. PET/CT, positron emission tomography/computed tomography; PFTs, pulmonary function tests; SW, social work; TTE, transthoracic echocardiogram.