TIAM1 and pituitary gland adenoma: KBTBD7 participates in the degradation of T‐lymphoma and metastasis gene 1 (TIAM1) and dopamine type 2 receptor (DRD2) proteins, leading to the restriction of TIAM1‐RAC1 signaling and enhancing the dopamine agonist resistance to pituitary adenoma, respectively.5, 6