Symptoms of Hematologic Tumors Patients after CAR-T Therapy: a Systematic Review and Meta-Analysis

Context: Patients with hematologic neoplasms after Chimeric antigen receptor T-cell (CAR-T) therapy have multiple syndromes, with corresponding symptoms.

Objectives: The review aimed to integrate the severity and incidences of symptoms in these patients, and to investigate the difference of the symptoms among different geographic locations, types of hematological tumors, evaluating instruments, and evaluating time, to provide a theoretical basis for symptom management.

Methods: A literature search of PubMed, Web of Science, Embase, the Cochrane Library, China National Knowledge Internet, SinoMed, VIP, and WANFANG DATA was performed for studies reporting symptom scores or symptom incidences of these patients published before November 9, 2023. Heterogeneity between studies was assessed by Higgins' I². A random effects model was used for studies with I² > 50%. Methodological quality of included studies was assessed using the Joanna Briggs Institute Critical Appraisal Checklist.

Results: Eight studies were included. Among the reported symptoms, sleep disturbance, fatigue and depression were of higher severity, with the standardized scores exceeding 50. Sadness, problem with concentration, problem with memory, cough and nausea were the top five symptoms in incidence, which exceeded 50%. The symptom scores and incidences assessed by the patient-reported outcomes were higher. Within 90 days of CAR-T infusion, these patients reported a significantly higher severity and incidence of multiple symptoms.

Conclusion: Patients with hematologic neoplasms treated by CAR-T suffer from multiple symptoms, including depression, fatigue, and so on. Instruments used to evaluate symptoms and the evaluating time may influence the outcome of symptom assessment.