Somatic mutations in the GNAS gene have been found predominantly in GH-secreting pituitary adenomas but also in ACTH-secreting adenomas.
Mutations in the GNAS gene have been found in about 40% of sporadic somatotrophin adenomas (summary by Mete and Lopes, 2017).
For a general description and a discussion of genetic heterogeneity of pituitary adenomas, see PITA1 (102200). [from
OMIM]