Related Experiment Video
Updated: Aug 23, 2026

FISH for Pre-implantation Genetic Diagnosis
Published on: February 23, 2011
Genetic prenatal RET testing and pregnancy management of multiple endocrine neoplasia Type II A (MEN2A): a case
P Martinelli1, G M Maruotti, D Pasquali
1Department of Obstetrics and Gynecology, Federico II University, Naples, Italy.
Abstract:
Multiple endocrine neoplasia 2A (MEN 2A) is an inherited dominant syndrome characterised by medullary thyroid carcinoma, adrenal pheochromocytoma and hyperparathyroidism due to specific RET proto-oncogene mutations. Fertile MEN 2A women are at risk of complicated pregnancy because of unrecognised pheochromocytoma and transmission of RET mutation to the progeny. This condition may cause psychological distress in affected pregnant patients and their families. Here we describe the genetic prenatal testing, the pregnancy management and obstetric outcome in a MEN 2A patient with a right side adrenal hyperplasia and elevated calcitonin levels, a condition suspicious for possible recurrence of pheochromocytoma. We confirm that maternal or fetal complications are rare when MEN 2A diagnosis is made before pregnancy and an accurate monitoring is instituted. Furthermore, our results indicate that prenatal testing for RET mutations is highly recommended in making decisions and assuring parents on the lifelong risk of tumors. This will avoid the psychological distress that can further complicate the pregnancy of affected women.
Insights
Prenatal diagnosis and management of Multiple Endocrine Neoplasia 2A (MEN 2A) in pregnant women significantly reduce maternal and fetal complications. Genetic testing for RET mutations ensures informed decisions and alleviates parental anxiety regarding lifelong tumor risks.
Area of Science:
- Endocrinology
- Genetics
- Obstetrics
Background:
- Multiple endocrine neoplasia 2A (MEN 2A) is an inherited disorder caused by RET proto-oncogene mutations.
- MEN 2A poses risks during pregnancy due to potential pheochromocytoma and germline RET mutation transmission.
Observation:
- A case study of a MEN 2A patient with adrenal hyperplasia and elevated calcitonin during pregnancy.
- Focus on genetic prenatal testing, pregnancy management, and obstetric outcomes.
Findings:
- Maternal and fetal complications are infrequent with pre-pregnancy diagnosis and diligent monitoring.
- Prenatal testing for RET mutations is crucial for parental decision-making and managing lifelong tumor risks.
Implications:
- Early diagnosis and management of MEN 2A in pregnancy are vital for favorable outcomes.
- Prenatal genetic testing for RET mutations can prevent psychological distress in affected families.
- This approach supports informed reproductive choices for individuals with MEN 2A.
Related Concept Videos
Diabetes Mellitus: Type 2 and Gestational
The Retinoblastoma Gene
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...
Genomic Imprinting and Inheritance
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
Pharmacogenetics of Drug Targets: β₂-Adrenergic Receptors, Apo E, Thymidylate Synthase
