MST1 and breast neoplasm: To ascertain the frequency of such alterations, we gathered data from numerous publicly available datasets which showed coordinate alterations of MST1R/MST1 in 0.7% of breast tumors analyzed, 0.5% with MST1R alone, 0.3% with MST1 alone, and 98.5% with neither altered; Chi-square analysis supports that MST1R/MST1 alterations tend to co-occur in the rare event that they do occur (Table 1).