Src-homology-2-containing protein tyrosine phosphatase 2 (SHP2), encoded by the PTPN11 gene, is a classical nonreceptor protein tyrosine phosphatase (PTP). SHP2 is a ubiquitous protein tyrosine phosphatase with a relatively conserved structure and function. It has emerged as a key downstream regulator of several receptor tyrosine kinases (RTKs) and cytokine...