Impact of care fragmentation in patients receiving neoadjuvant chemotherapy and radical cystectomy for bladder cancer.

Authors

Carlos Riveros

Carlos Riveros

University of Florida, Jacksonville, FL

Carlos Riveros , Victor Chalfant , KC Balaji

Organizations

University of Florida, Jacksonville, FL, Creighton University School of Medicine, Omaha, NE

Research Funding

No funding received

Background: Neoadjuvant chemotherapy (NAC) followed by radical cystectomy (RC) is the standard of care for muscle-invasive bladder cancer (MIBC). However, the impact of care fragmentation on the outcomes of patients receiving NAC and RC for MIBC is not well defined. Methods: The National Cancer Database was queried for adult (≥18 years old) patients with cT2-T4aN0M0 urothelial carcinoma of the bladder receiving NAC followed by RC between 2004 and 2017. Patients were dichotomized based on whether they received fragmented care (FC, defined as receiving NAC at a different facility from RC) or integrated care (IC, defined as receiving NAC and RC at a single facility). Descriptive statistics were used to characterize the two groups based on demographic and therapeutic profiles. Overall survival was compared between patients who received FC versus IC. Statistical analyses include Chi-squared tests, t-tests, Kaplan-Meier with log-rank test, and Cox regression analysis. Results: A total of 5054 patients received NAC followed by RC: 1848 (36.6%) received FC and 3206 (63.4%) received IC. Greater travel distance, private insurance, and treatment at a community cancer program were associated with FC whereas age, sex, race, median income, education level, rurality, and comorbidity burden were not. While patients who received FC had a longer time to initiation of NAC (40 vs. 37 days, p< 0.001), there was no significant difference in median overall survival (OS) (84.3 vs. 92.8 months, p= 0.37). On multivariable Cox regression analysis, age, comorbidity burden, stage, lymphovascular invasion, and surgical margins were associated with OS, while FC was not (hazard ratio: 1.03; 95% confidence interval 0.94-1.13; p= 0.51). Conclusions: Although care fragmentation was associated with a slight delay in the initiation of NAC, long-term survival rates were similar between the FC and IC groups.

ParameterHazard ratio95% confidence intervalp-value
Age1.031.02-1.04< 0.001
Fragmented care1.030.94-1.130.513
Charlson-Deyo score = 21.281.07-1.540.007
NCDB analytic stage group
Stage II1.421.14-1.760.001
Stage III3.392.74-4.20< 0.001
Stage IV5.864.70-7.31< 0.001
Lymphovascular invasion present1.541.38- 1.73< 0.001
Surgical margins = R22.141.38-3.32< 0.001

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Abstract Details

Meeting

2022 ASCO Genitourinary Cancers Symposium

Session Type

Poster Session

Session Title

Poster Session B: Urothelial Carcinoma

Track

Urothelial Carcinoma

Sub Track

Quality of Care/Quality Improvement and Real-World Evidence

Citation

J Clin Oncol 40, 2022 (suppl 6; abstr 468)

DOI

10.1200/JCO.2022.40.6_suppl.468

Abstract #

468

Poster Bd #

D4

Abstract Disclosures