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Neoadjuvant Chemotherapy Improves Oncological Outcomes and Long-Term Survival Among Elderly Patients with Locally Advanced Gastric Cancer: A Propensity Score Matched Analysis

  • Gastrointestinal Oncology
  • Published:
Annals of Surgical Oncology Aims and scope Submit manuscript

Abstract

Introduction

In the USA, approximately half of newly diagnosed patients with GC are 75 years or older. The objective of the current population-based study was to investigate the impact of neoadjuvant chemotherapy (NAC) on the outcomes of elderly patients with locally advanced GC.

Patients and Methods

Patients aged > 75 years were identified from the National Cancer Database (NCDB). The primary outcome of the study was overall survival (OS). Secondary outcomes included lymph node (LN) harvest, surgical margin status, and 30-day mortality. To minimize the effect of selection bias on the assessed outcome between the two study groups (NAC versus no NAC), propensity score matching (PSM) was performed.

Results

After PSM, a total of 1958 patients were included in both groups. NAC utilization increased from 2013 to 2019 (21% versus 42.7%, ptrend < 0.001). On pathologic analysis, patients who received NAC were more likely to have ≥ 16 LNs evaluated (NAC 60.1% versus no NAC 55.5%, p = 0.044) and negative resection margins (NAC 88.6% versus no NAC 83%, p = 0.001). Patients who received NAC were also less likely to experience 30-day mortality following resection (NAC 4.1% versus no NAC 7.1%). Receipt of NAC was associated with improved 1-year (73.9% versus 68.3%), 3-year (48.2% versus 43.5%), and 5-year OS (36.9% versus 30.5%) compared with patients who underwent upfront surgery (p = 0.01).

Conclusions

Receipt of NAC was associated with improved oncological outcomes among elderly patients undergoing resection for locally advanced GC.

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Authors and Affiliations

  1. Department of Surgery,The Ohio State University Wexner Medical Center and James Comprehensive Cancer Center, The Ohio State University, Wexner Medical Center , Columbus, OH, USA

    Karol Rawicz-Pruszyński MD, Yutaka Endo MD, Diamantis I. Tsilimigras MD, Muhammad Musaab Munir MD, Vivian Resende MD, Alex Kim MD, Joal Beane MD & Timothy M. Pawlik MD, PhD, MPH, MTS, MBA, FACS, FRACS (Hon.)

  2. Department of Surgical Oncology, Medical University of Lublin, Lublin, Poland

    Karol Rawicz-Pruszyński MD, Zuzanna Pelc MD & Katarzyna Sędłak MD

  3. Federal University of Minas Gerais School of Medicine, Belo Horizonte, Brazil

    Vivian Resende MD

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  1. Karol Rawicz-Pruszyński MD
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Correspondence to Timothy M. Pawlik MD, PhD, MPH, MTS, MBA, FACS, FRACS (Hon.).

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Disclosure

First author is a scholar of the Polish National Agency for Academic Exchange (NAWA) Franciszek Walczak program, which allowed conducting this study as a research fellow at the Department of Surgery, Ohio State University, Wexner Medical Center, Columbus, OH, USA.

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Rawicz-Pruszyński, K., Endo, Y., Tsilimigras, D.I. et al. Neoadjuvant Chemotherapy Improves Oncological Outcomes and Long-Term Survival Among Elderly Patients with Locally Advanced Gastric Cancer: A Propensity Score Matched Analysis. Ann Surg Oncol 31, 753–761 (2024). https://doi.org/10.1245/s10434-023-14569-y

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