NOTCH1 and adrenal cortex carcinoma: Meta‐analyses of HRs were conducted with 2 studies for each index factor, revealing a 2.31‐fold increased risk of death for primary ACC cases with NOTCH1 mutations, a 2.6‐fold increased risk of death for those exhibiting positive NICD1 expression and a 1.91‐fold heightened risk of disease recurrence for cases with high Notch1 expression.