Such characterization has shown that type I cancers are more often mutated in Homo sapiens v-Ki-ras2 Kirsten rat sarcoma viral oncogene (KRAS), fibroblast growth factor receptor 2 (FGFR2) and phosphatase and tensin homology (PTEN), and tend to be microsatellite instable and estrogen- and progesterone receptor positive2, 4. Here, FGFR2 is linked to cancer.