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Multiple endocrine neoplasia type 2A in an Iranian family: clinical and genetic studies
Ali Asghar Ghazi1, Mahmoud Bagheri2, Ali Tabibi3
1Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran. hengamehabdi@gmail.com.
Abstract:
Multiple endocrine neoplasia (MEN) type 2A, a dominant inherited syndrome caused by germline activating mutations in the RET protooncogene, is characterized by association of medullary thyroid carcinoma, pheochromocytoma and primary hyperparathyroidism. There is limited data on this disease in the Middle East region. In this paper, we present clinical and genetic studies of an Iranian patient and her family members. The patient was a 49-year old Iranian woman who presented with hypertension due to bilateral pheochromocytoma. She had history of a medullary carcinoma of thyroid which had been operated 28 years ago. Analysis of the RET gene in the family revealed a C634R mutation in codon 11 and 3 polymorphisms, G691S, S836S and S904S in codons 11, 14 and 15, respectively, that might have been important in modifying the clinical picture. Due to paucity of information on MEN type 2 in the area, this study can be helpful in portraying the clinical and cytogenetic characteristics of the disease in the region.
Insights
This study details a rare case of Multiple Endocrine Neoplasia (MEN) type 2A in an Iranian family, identifying a specific RET gene mutation. The findings contribute to understanding MEN 2A
Area of Science:
- Endocrinology
- Genetics
- Oncology
Background:
- Multiple Endocrine Neoplasia (MEN) type 2A is an inherited disorder.
- It is caused by activating mutations in the RET protooncogene.
- MEN 2A is associated with medullary thyroid carcinoma, pheochromocytoma, and hyperparathyroidism.
Observation:
- Limited data exists on MEN type 2 in the Middle East.
- This paper presents clinical and genetic findings of an Iranian patient and her family.
- The patient, a 49-year-old woman, had hypertension due to bilateral pheochromocytoma and a history of medullary thyroid carcinoma.
Findings:
- RET gene analysis revealed a C634R mutation in codon 11.
- Three polymorphisms (G691S, S836S, S904S) were identified in codons 11, 14, and 15.
- These genetic variations may influence the clinical presentation of MEN 2A.
Implications:
- This study addresses the paucity of information on MEN type 2 in the Middle East.
- It provides insights into the clinical and cytogenetic characteristics of the disease in the region.
- The findings can aid in diagnosis and management of MEN 2A in Iranian populations.
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