Real-world Resource Use and Costs of CAR-T Therapies in Diffuse Large B-cell Lymphoma (DLBCL): Inpatient and Outpatient Settings

Real-world Resource Use and Costs of CAR-T Therapies in Diffuse Large B-cell Lymphoma (DLBCL): Inpatient and Outpatient Settings

A retrospective, non-interventional cohort study was used to address the study objectives. This study aimed to provide a better understanding of real-world healthcare resource utilization (HRU) and healthcare reimbursement costs associated with chimeric antigen receptor modified T cell (CAR-T) therapy among patients with DLBCL.

Inclusion Criteria:

CAR-T cohort:

• Patients had at least one International Classification of Diseases, Tenth Revision (ICD-10) diagnosis code for DLBCL.
• Patients received CAR-T therapy following DLBCL diagnosis. The administration date of CAR-T therapy was defined as the index date. Patients who received both CAR-T therapy and allo-HSCT were classified based on the first treatment that the patient received.
• Patients were at least 18 years of age as of the index date.
• Patients had at least three months of continuous eligibility in the Medicare Part A and Part B data before the index date. Since 2020 Part D data is not available in the current data cut; eligibility requirement in the Part D data was not required.
• Patients were further classified into CAR-T IP and CAR-T OP cohorts depending on where the administration occurred.

Allo-HSCT cohort:

• Patients had at least one ICD-10 diagnosis code for DLBCL.
• Patients received allo-HSCT following DLBCL diagnosis. The date of allo-HSCT procedure was defined as the index date. Patients who received both CAR-T therapy and allo-HSCT were classified based on the first treatment the patient received.
• Patients were at least 18 years of age as of the index date.
• Patients had at least three months of continuous eligibility in the Medicare Part A and Part B data before the index date. Since 2020 Part D data is not available in the current data cut; eligibility requirement in the Part D data was not required.

Exclusion criteria:

• Patients had a medical claim associated with a clinical trial (ICD-9 CM code V70.7; ICD-10 CM code Z00.6) during one month before and after the index date.