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Bausys A, Ümarik T, Dobrzhanskyi O, Luksta M, Kondratskyi Y, Reinsoo A, Vassiljev M, Bausys B, Bickaite K, Rauduvyte K, Luksaite-Lukste R, Bausys R, Strupas K. Neoadjuvant Chemotherapy Followed by Gastrectomy for Cytology-Positive Gastric Cancer without Any Other Non-Curative Factors in a Western Setting: An International Eastern European Cohort Study. Cancers (Basel) 2023; 15:5794. [PMID: 38136339 PMCID: PMC10741658 DOI: 10.3390/cancers15245794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 12/01/2023] [Accepted: 12/07/2023] [Indexed: 12/24/2023] Open
Abstract
The optimal approach for treating cytology-positive (Cy1) gastric cancer (GC) patients without additional non-curative factors remains uncertain. While neoadjuvant chemotherapy followed by gastrectomy shows promise, its suitability for Western patients is not well supported by existing data. To address this knowledge gap, a cohort study was conducted across four major GC treatment centers in Lithuania, Estonia, and Ukraine. Forty-three consecutive Cy1 GC patients who underwent neoadjuvant chemotherapy between 2016 and 2020 were enrolled. The study evaluated overall survival (OS), progression-free survival (PFS), cytology status conversion, and major pathological response rates, along with the factors influencing these outcomes. All patients underwent surgery post-neoadjuvant chemotherapy, with 53.5% experiencing cytological status conversion and 23.3% achieving a major pathological response. The median OS and PFS were 20 (95% CI: 16-25) and 19 (95% CI: 11-20) months, respectively. Conversion to negative cytology significantly reduced the relative risk of peritoneal progression (RR: 0.11; 95% CI: 0.03-0.47, p = 0.002). The study suggests that neoadjuvant chemotherapy followed by gastrectomy holds promise as a treatment option for Cy1 GC without additional non-curative factors, associating cytology status conversion with improved long-term outcomes and reduced peritoneal relapse risk.
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Affiliation(s)
- Augustinas Bausys
- Clinic of Gastroenterology, Nephrourology, and Surgery, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, 03101 Vilnius, Lithuania
- Centre for Visceral Medicine and Translational Research, Faculty of Medicine, Institute of Clinical Medicine, Vilnius University, 03101 Vilnius, Lithuania
| | - Toomas Ümarik
- Upper Gastrointestinal Tract Surgery Department, North Estonia Medical Centre, 13419 Tallinn, Estonia; (T.Ü.)
| | - Oleksii Dobrzhanskyi
- Upper Gastrointestinal Tumors Department, National Cancer Institute, 03022 Kyiv, Ukraine; (O.D.)
| | - Martynas Luksta
- Clinic of Gastroenterology, Nephrourology, and Surgery, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, 03101 Vilnius, Lithuania
| | - Yourii Kondratskyi
- Upper Gastrointestinal Tumors Department, National Cancer Institute, 03022 Kyiv, Ukraine; (O.D.)
| | - Arvo Reinsoo
- Upper Gastrointestinal Tract Surgery Department, North Estonia Medical Centre, 13419 Tallinn, Estonia; (T.Ü.)
| | - Mihhail Vassiljev
- Pathology Department, North Estonia Medical Centre, 13419 Tallinn, Estonia
| | - Bernardas Bausys
- Clinic of Gastroenterology, Nephrourology, and Surgery, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, 03101 Vilnius, Lithuania
| | - Klaudija Bickaite
- Clinic of Gastroenterology, Nephrourology, and Surgery, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, 03101 Vilnius, Lithuania
| | - Kornelija Rauduvyte
- Centre for Visceral Medicine and Translational Research, Faculty of Medicine, Institute of Clinical Medicine, Vilnius University, 03101 Vilnius, Lithuania
| | - Raminta Luksaite-Lukste
- Clinic of Gastroenterology, Nephrourology, and Surgery, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, 03101 Vilnius, Lithuania
- Centre for Visceral Medicine and Translational Research, Faculty of Medicine, Institute of Clinical Medicine, Vilnius University, 03101 Vilnius, Lithuania
| | - Rimantas Bausys
- Clinic of Gastroenterology, Nephrourology, and Surgery, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, 03101 Vilnius, Lithuania
- Department of Abdominal Surgery and Oncology, National Cancer Institute, 08406 Vilnius, Lithuania
| | - Kestutis Strupas
- Clinic of Gastroenterology, Nephrourology, and Surgery, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, 03101 Vilnius, Lithuania
- Centre for Visceral Medicine and Translational Research, Faculty of Medicine, Institute of Clinical Medicine, Vilnius University, 03101 Vilnius, Lithuania
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