Four Subtypes of Gastric Cancer
Adam Bass, MD, assistant professor, Harvard Medical School, Dana-Farber Cancer Institute, provides an overview of the four subtypes of gastric cancer identified in a recent study.
Clinical Pearls
Adam Bass, MD, assistant professor, Harvard Medical School, Dana-Farber Cancer Institute, provides an overview of the four subtypes of gastric cancer identified in a recent study.
- The 4 main subtypes identified were EpsteinBarr virus (EBV)-positive, microsatellite unstable, genomically stable, and chromosomal instable.
- Approximately 10% of tumors were classified in the EBV-positive subtype. This was the most actionable subtype identified.
- Tumors in the microsatellite unstable subtype had malfunctions in DNA repair mechanisms.
- 30% of tumors in the genomically stable subtype had alterations in the RHOA pathway.
- The chromosomal unstable subtype could possibly be treated with drugs that are currently available or are in the late stages of development.
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