Real world survival rates and healthcare utilization among SEER-Medicare patients treated with hematopoietic stem cell transplant (HSCT) for relapsed/refractory diffuse large b-cell lymphoma (RR-DLBCL).

Authors

null

Anna G. Purdum

Kite, a Gilead company, Santa Monica, CA

Anna G. Purdum , Timothy Niecko , Yin Yang

Organizations

Kite, a Gilead company, Santa Monica, CA, Niecko Health Economics, Tierra Verde, FL

Research Funding

Pharmaceutical/Biotech Company

Background: Few elderly patients with RR-DLBCL are offered HSCT and little is known about their overall survival (OS) rates or economic burden. This study evaluated OS rates and healthcare resource utilization (HRU) among Medicare patients who received HSCT. Methods: Using the Surveillance, Epidemiology, and End Results (SEER)-Medicare database, patients who relapsed after receiving R-CHOP (rituximab, cyclophosphamide, doxorubicin, vincristine, prednisone) as first-line therapy (1L) for DLBCL diagnosed between 2000 and 2011 were selected for our cohort if they received a subsequent HSCT at 2L or beyond. Subgroups were further divided by time to early relapse (≤12 months) or late relapse ( > 12 months) based on time from end of R-CHOP to 2L therapy. Median (95%) OS were estimated by Kaplan-Meier method from date of HSCT. Descriptive healthcare utilization rates were reported for inpatient, outpatient, and emergency department visits. Results: Among 6361 patients with DLBCL who received 1L R-CHOP, 1869 (29%) received 2L therapy; outcomes for the 117 (6.3%) receiving subsequent HSCT are presented here. At time of diagnosis, patients had a mean age of 69 (SD = 2.99 years) and were predominantly males (59% (n = 69)), with stage III/IV disease (68%, n = 80), and a mean NCI comorbidity index (CI) of < 1. The majority of patients receiving HSCT were early relapsers (n = 86). With a median follow-up of 10.3 months (0.00 -115.92) from the date of transplant, the median OS was 12.38 months (95% CI: 8.06, 29.43), with no statistically differences in OS between pts with early and late relapse. As for HRU, patients had frequent inpatient admissions (100% utilizied inpatient services), with 5.82 mean inpatient visits and an average length of stay of 8.53 days (SD = 5.15 days), outpatient visits (94%, with 25.48 mean outpatient visits), and emergency department visits (60%, with 1.21 mean ER visits). Conclusions: In this elderly population with RR-DLBCL, HSCT with curative intent was infrequently utilized, associated with short OS, and substantial HRU. Poor real world outcomes demonstrate an unmet need for novel therapies in RR-DLBCL.

Disclaimer

This material on this page is ©2024 American Society of Clinical Oncology, all rights reserved. Licensing available upon request. For more information, please contact licensing@asco.org

Abstract Details

Meeting

2018 ASCO Annual Meeting

Session Type

Publication Only

Session Title

Publication Only: Hematologic Malignancies—Lymphoma and Chronic Lymphocytic Leukemia

Track

Hematologic Malignancies—Lymphoma and Chronic Lymphocytic Leukemia

Sub Track

Cell Therapy, Bispecific Antibodies, and Autologous Stem Cell Transplantation for NHL, HL, or CLL

Citation

J Clin Oncol 36, 2018 (suppl; abstr e19502)

DOI

10.1200/JCO.2018.36.15_suppl.e19502

Abstract #

e19502

Abstract Disclosures