Unveiling survival strategies: The impact of treatment modalities on patients with esophageal cancer and the role of racial disparities.

Authors

null

Dani Ran Castillo

City of Hope National Cancer Center, Duarte, CA

Dani Ran Castillo , Won Jin Jeon , Esther G Chong , Jae Y. Kim , S.Peter Wu

Organizations

City of Hope National Cancer Center, Duarte, CA, Loma Linda University Medical Center, Loma Linda, CA, City of Hope Cancer Center, Duarte, CA

Research Funding

No funding sources reported

Background: Managing esophageal cancer (EC) involves neoadjuvant chemoradiotherapy (nCRT) followed by esophagectomy as the standard of care. However, some patients may remain unsuitable for esophagectomy. This study explores real-world outcomes in EC patients across different treatments, considers prognostic factors, and examines potential racial disparities. Methods: Data from 44,181 patients diagnosed with locally advanced EC between 2004-2017 were extracted from the National Cancer Database. The cohort was stratified into three groups: nCRT followed by esophagectomy, definitive RT (dCRT), single-modality RT. The dataset included 24,676 patients who received nCRT with esophagectomy or dCRT (N=17,534) and 1,971 patients who received single-modality RT. Endpoints included overall survival (OS). Cox Proportional Hazards Model was employed for multivariate survival analysis. Chi-square test was applied to the covariate demographic data. Results: nCRT followed by esophagectomy significantly improved OS compared to dCRT (mOS 43.5 vs. 20.1 months, p < 0.001). Single-modality RT had an mOS of 14.4 months. In the RT group, 73% were over 65 years old compared to 59% in the dCRT group (p < 0.001). Over 60% of patients had node-positive disease in both RT and dCRT groups (69% vs. 61.4%). More privately insured patients received multimodal treatment compared to publicly insured patients (27.3% vs. 16.8%, p < 0.001). Over 70% of patients were willing to travel within 20 miles for treatment, 60% underwent treatment in community programs. Racial disparities were observed, with Black patients experiencing worse outcomes compared to all other groups, while Asian and Hispanic patients had better outcomes (table1). In the squamous cell histology subset treated with dCRT, mOS was 22 (20.6 – 23.6 months) for Black patients, 27 (26 – 28) months for White patients, 36 (30-46) months for Hispanic patients, and 37 (30-44) months for Asian/Pacific Islander patients (p < 0.001). Conclusions: This real-world data analysis underscores the effectiveness of nCRT followed by esophagectomy in providing the best survival benefit for EC patients compared to dCRT or RT alone. Racial disparities emerged as significant factors influencing cancer survival outcomes. These identified factors including race and age can assist clinicians in making better-informed decisions regarding treatment pathways for specific patient populations.

Variablen=Hazard Ratiop-value
Age
< 50
50-65
≥ 65
2918
15948
19009
Reference
1.08 (1.02, 1.13)
1.18 (1.12, 1.24)
N/A
0.003
< 0.001
Treatment
nCRT + esophagectomy
dCRT
RT alone
16838
19895
1142
Reference
1.91 (1.86, 1.96)
2.75 (2.58, 2.94)
N/A
< 0.001
< 0.001
Race
White
Black
Hispanic
East Asian, South Asian, Pacific Islander
32140
3236
1194
826
479
Reference
1.10 (1.06, 1.15)
0.82 (0.76, 0.88)
0.77 (0.70, 0.84)
0.87 (0.78, 0.97)
N/A
< 0.001
< 0.001
< 0.001
0.010

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Abstract Details

Meeting

2024 ASCO Gastrointestinal Cancers Symposium

Session Type

Poster Session

Session Title

Poster Session A: Cancers of the Esophagus and Stomach and Other Gastrointestinal Cancers

Track

Esophageal and Gastric Cancer,Other GI Cancer

Sub Track

Cancer Disparities

Citation

J Clin Oncol 42, 2024 (suppl 3; abstr 257)

DOI

10.1200/JCO.2024.42.3_suppl.257

Abstract #

257

Poster Bd #

B15

Abstract Disclosures