PTEN and hyperinsulinemic hypoglycemia, familial, 4: No case of EMRC shared the immunohistochemical markers of the associated neoplasia, including PTEN loss (n = 10) (Figure 3c), MMR deficiency (n = 4), p53 mutant-type expression (n = 4), β-catenin nuclear expression (n = 2), Napsin A positivity (n = 3), and AMACR positivity (n = 2).