Treatment modalities and oncological outcomes in Mexican patients with localized gastric cancer.

Authors

Haydee Verduzco-Aguirre

Haydee Cristina Verduzco-Aguirre

Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, DF, Mexico

Haydee Cristina Verduzco-Aguirre , Mónica Isabel Meneses Medina , Ana Karen Valenzuela , Vanessa Rosas Camargo , Luis Guillermo Anaya Sánchez , Edwin Ulises Cortez Dominguez , Fidel David Huitzil-Melendez

Organizations

Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, DF, Mexico, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico, DF, Mexico, INNSZ, Mexico, Mexico, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Tlalpan, DF, Mexico, Instituto Nacional de Ciencias Médicas y Nutrición, Salvador Zubirán, Mexico City, DF, Mexico

Research Funding

No funding received
None

Background: gastric cancer is common in Mexico. Evaluation of treatment strategies is greatly important in early gastric cancer. National institutions rarely report their outcomes, limiting feedback and policy improvements. Methods: single-center retrospective review of patients with histologically confirmed localized gastric cancer diagnosed from Jan 2005 to Dec 2017. Overall survival (OS) and recurrence-free survival (RFS) were estimated by Kaplan-Meier curves and compared with log-rank rest. A p value < 0.05 was significant. Results: we included 78 cases, median age 63 years, 52.6% men. Surgery was the initial treatment in 46 patients (59%) and 87% achieved R0 resection. Adjuvant treatment was administered to 63% of patients. 29 patients (37.2%) started perioperative chemotherapy with 86.2% of them being resected, and 75.9% having R0 resection. 13 patients (44.8%) also received postoperative chemotherapy. Better performance status (p=0.036) and lower albumin levels (p=0.039) were found in patients with initial surgery vs those with perioperative chemotherapy. At the time of surgery, most patients had stage III disease in both groups but 5 patients had M1 disease despite negative initial laparoscopy in the chemotherapy group and 5 patients did not require aduvant tx given early stage in the surgery first group. Median OS and RFS are reported in table. Conclusions: Most patients in our center undergo initial surgery. We report a differential survival according to initial treatment. More advanced disease in chemotherapy first group may explain differences. Given non-random assignment, we could not show survival benefit of chemotherapy treated patients.

Median OS (mo) p Median RFS (mo) p
All patients (n 78) 29.5 18.8
Initial treatment
Surgery (n=46) 43.6 0.208 35.2 0.018
Chemotherapy (n=29) 28.7 10.5
Adjuvant treatment
Yes (n=42) 43.6 0.024 35.2 0.043
No (n=33) 24.9 11.2
R0 resection
Yes (n=62) 43.6 0.023 26.6 0.089
No (n=13) 16.6 9.7
Pathologic stage at resection
I-II (n=36) 83.8 0.001 84.0 0.001
III-IV (n=35) 19.0 9.7
Neo- + adjuvant chemotherapy
Yes (n=13) 27.1 0.16 14.1 0.76
No (n=62) 53.7 20.6

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Abstract Details

Meeting

2020 Gastrointestinal Cancers Symposium

Session Type

Poster Session

Session Title

Poster Session A: Esophageal and Gastric Cancer and Other GI Cancers

Track

Esophageal and Gastric Cancer,Other GI Cancer

Sub Track

Patient-Reported Outcomes and Real-World Evidence

Citation

J Clin Oncol 38, 2020 (suppl 4; abstr 319)

Abstract #

319

Poster Bd #

B16

Abstract Disclosures

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