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#4465 RET Lys666Asn has low MEN2-related tumours penetrance but may be associated with pheochromocytoma

Introduction: Multiple Endocrine Neoplasia type 2 (MEN2) is caused by germline pathogenic variants (PVs) in the RET proto-oncogene, leading to medullary thyroid carcinoma (MTC), pheochromocytoma, and primary hyperparathyroidism (PHPT). RET c.1998G>C, p.Lys666Asn is a rare PV, with 33 cases described thus far, and is associated with low penetrance of MEN2-related tumours, but its clinical significance remains incompletely understood.

Conference:

Presenting Author: Halperin R

Authors: Halperin R, Peshes-Yaloz N, Tirosh A, Twito O,

Keywords: MEN2, pheochromocytoma, hyperparathyroidism, medullary thyroid carcinoma,