Should T-cell be profiled for fitness (not exhausted) prior to using T cell-redirecting?

Should T-cell be profiled for fitness (not exhausted) prior to using T cell-redirecting?
What treatments are available for patients with relapsed refractory myeloma who have received at least two prior lines of therapy but less than 4 lines of therapy?
What is the difference between phenotype and genotype?
BETA - What is the role of the care partner once the patient returns home?
BETA - What are the main side effects of CAR T-cell therapy?
BETA - Would I need to get a central line, PICC line or a catheter for CAR T-cell treatment?
What is a gene? What is an allele? What is a genetic trait?