Racial ethnic disparities in clinical/pathological features, treatment, and survival among patients with early-onset colorectal cancer.

Authors

null

Michael Lyudmer

Albert Einstein College of Medicine, Bronx, NY

Michael Lyudmer , Riya Jayesh Patel , Adel Chergui , Seda Serra Tolu , Devika Rao , Andreas Kaubisch , Jennifer W. Chuy , Tarek N. Elrafei , Ana Acuna-Villaorduna , Sanjay Goel

Organizations

Albert Einstein College of Medicine, Bronx, NY, Jacobi Medical Center, Bronx, NY, Montefiore Medical Center, Bronx, NY, Memorial Sloan Kettering Cancer Center, Basking Ridge, NJ, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, NY, Albert Einstein College of Medicine-Jacobi Medical Center, New York, NY, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, NY

Research Funding

No funding received
None

Background: Globally, the incidence of early-onset colorectal cancer has risen. Racial disparities in colorectal cancer (CRC) are well-described, however data in EO by race/ethnicity is lacking. We aim to compare the presenting features, treatment, and survival features of patients with metastatic early-onset CRC (EO). Methods: Patients with metastatic CRC diagnosed between 2010-2019 at two NYC hospitals were identified by tumor registry (n = 646). Clinical/pathological features, treatment and survival data was collected by chart review and compared between Non-Hispanic Whites (NHW), Non-Hispanic Blacks (NHB) and Hispanics (H) using Chi-square or Fisher’s exact test. Kaplan Meier curves were plotted to compare overall survival (OS) among groups. Stata v15 was used for statistical analysis. Results: Of 646 CRC patients, 126 (21.5%) were NHW, NHB or H diagnosed with EO with a frequency ranging from 16.6% in NHW to 26.1% in H. Non statistically significant lower frequencies of male gender, low/moderate grade, left-sided tumors,and higher frequency of KRAS mutations were seen in NHB (Table). Metastectomy was performed in 20 patients (13.9%) and did not differ between groups. There was no difference in the use of chemotherapy or biologics in general (Table), but NHW were more likely to get cetuximab than NHB (OR:4.5, p = 0.02) and H (OR:4.7, p = 0.02).There were no differences in median OS (1.8 vs. 2.2 vs. 2 years, p = 0.9)or 1-year OS (72% vs 72.3% vs 70.8%) in NHW, NHB and H, respectively. A lower 5-year OS was seen in NBH (14.5%) and Hispanics (24.4%) compared to NHW (44%). Conclusions: EO-CRC is more frequently seen in minority racial/ethnic groups. Despite no differences in the use of chemotherapy or biologic treatment in general, NHB have a lower 5-year survival rate compared to NHW and H.

n (%)EO NHW n = 25EO NHB N = 54EO H n = 47p
Male gender15 (60)24 (44.4)17 (36.2)0.15
Low/mod grade11 (55)32 (72.7)25 (65.8)0.37
Left-sided11 (78.6)21 (75)25 (83.3)0.75
KRAS mutant4 (33.3)19 (51.4)14 (46.7)0.55
Oxaliplatin-based10 (62.5)29 (70.7)21 (61.8)0.68
Irinotecan-based6 (42.9)16 (44.4)15 (44.1)0.99
Biologics19 (76)33 (61.1)36 (76.6)0.18
Cetuximab9 (64.3)10 (28.6)10 (27.8)0.04
5-y OS44%14.5%24.4%

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Abstract Details

Meeting

2021 Gastrointestinal Cancers Symposium

Session Type

Poster Session

Session Title

Poster Session: Colorectal Cancer

Track

Colorectal Cancer

Sub Track

Cancer Disparities

Citation

J Clin Oncol 39, 2021 (suppl 3; abstr 21)

DOI

10.1200/JCO.2021.39.3_suppl.21

Abstract #

21

Poster Bd #

Online Only

Abstract Disclosures