Interviews and questionnaires will be performed before administration of CAR-T cells, 3 month after and 6 month after, and will last 60 minutes each time. Semi-structured interview using pre-established questionnaires will be completed with a hospital pharmacist, concerning the patient's perception of his family, socio-professional environment, his knowledge of his illness and his treatment, the consumption of prescribed drugs outside the hospital, self-medication, complementary alternative therapies including herbal medicine. Seven self-administered questionnaires will be completed, concerning quality of life, Assessment of Cancer Treatment-Lymphoma, Beliefs about Medicines, Brief Illness Perception, satisfaction with medication, perceived social support scale, and on Health Literacy.