Common alleles of predisposition in endocrine neoplasia

Area of Science:

• Endocrinology
• Cancer Genetics
• Molecular Biology

Background:

• Germline high penetrance gain-of-function mutations in RET proto-oncogene are key to diagnosing and managing multiple endocrine neoplasia.
• This model, while effective for syndromic endocrine neoplasias, does not encompass all endocrine neoplasias.
• Recent research has identified low penetrance alleles associated with various endocrine neoplasias, including thyroid carcinomas and pituitary adenomas.

Purpose of the Study:

• To review the clinical utility of high penetrance mutations in endocrine neoplasia management.
• To discuss the challenges and potential of incorporating low penetrance alleles into clinical practice.
• To highlight the need for further research into the functional characterization and risk assessment of low penetrance alleles.

Main Methods:

• Literature review of genetic studies in endocrine neoplasia.
• Analysis of functional characterization data for RET proto-oncogene mutations.
• Evaluation of risk conferred by low penetrance alleles in endocrine neoplasias.

Main Results:

• High penetrance RET mutations have enabled accurate molecular diagnosis, predictive testing, and preventative medicine for multiple endocrine neoplasia.
• Low penetrance alleles for thyroid carcinomas and pituitary adenomas have been identified.
• The functional effects of these low penetrance alleles are often subtle (e.g., gene expression, micro-RNA regulation) and confer low risks.

Conclusions:

• The established model for high penetrance mutations provides a clinically useful framework for endocrine neoplasia management.
• Low penetrance alleles present significant scientific challenges in functional characterization and risk assessment.
• Further research is required before low penetrance alleles can be integrated into routine clinical practice for endocrine neoplasia risk prediction and management.