<prompt> RET gene mutation is associated with which malignancy-PheochromocytomaMedullary carcinoma thyroidLymphomaRenal cell carcinoma  <response>: Harshmohan textbook of pathology 7th edition. RET gene is a proto oncogene normally code for RET receptor . If point mutation happens it produces Multiple endocrine neoplasia type 2A and type 2B , medullary carcinoma of thyroid. . 