# Mitsuru Sasako

Source: https://onco.cc/people/mitsuru-sasako/  
OnCo record `mitsuru-sasako` (Person). Data CC BY-NC 4.0, attribute "Data from OnCo (onco.cc)"; commercial use needs a licence.

## TL;DR

Japanese surgeon whose JCOG trials defined D2 gastrectomy and adjuvant S-1 as standards for gastric cancer.

## Summary

Mitsuru Sasako (Tokyo and Hyogo) led the JCOG 9501 trial showing that extended para-aortic nodal dissection adds nothing to D2 gastrectomy, and co-led the ACTS-GC trial that established adjuvant S-1 after D2 surgery in Japan. His surgical standards and training work underpin the D2 approach now recommended in Western guidelines. He remains an advisor to international gastric cancer surgical trials.

## Fields

- Kind: Person
- Last checked: 2026-09-10
- Tags: gastric; surgery; japan
- Role: Professor Emeritus, Hyogo College of Medicine; former Chief of Gastric Surgery, National Cancer Center Hospital Tokyo
- Specialisms: Gastric cancer surgery; D2 lymphadenectomy; Adjuvant therapy; Surgical trials

## Sources

- PubMed: https://pubmed.ncbi.nlm.nih.gov/?term=Sasako%20M%5BAuthor%5D%20gastric%20D2

## Connected records

- cancers: [Gastric & gastro-oesophageal junction cancer](https://onco.cc/cancers/gastric/)
- terms: [Gastrectomy](https://onco.cc/terms/gastrectomy/), [Lymphadenectomy (lymph node dissection)](https://onco.cc/terms/lymphadenectomy/)

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JSON: https://onco.cc/api/v1/entities/mitsuru-sasako.json