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Familial thyrotoxicocis in five Nigerians.

A O Afolabi¹, O O Akute

¹Department of Surgery, University College Hospital, P. M. B. 5116, Ibadan, Nigeria. aafolabi@comui.edu.ng

Nigerian Journal of Clinical Practice

|February 16, 2006

Summary

Familial thyrotoxicosis, a genetic thyroid disorder, is reported in four Nigerian families for the first time. Further genetic analysis is needed to identify specific mutations causing this condition in the Nigerian population.

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Area of Science:

Endocrinology
Genetics
Internal Medicine

Background:

Familial thyrotoxicosis, a hereditary form of hyperthyroidism, has primarily been documented in Caucasian and recently in Chinese populations.
The genetic basis of thyrotoxicosis in African populations remains largely unexplored.
This study addresses the underrepresentation of data on familial thyrotoxicosis in Nigerian individuals.

Purpose of the Study:

To report the occurrence of familial thyrotoxicosis in four Nigerian families.
To highlight the need for genetic investigation into the TSH receptor in affected individuals.
To increase awareness of familial thyrotoxicosis in clinical practice within Nigeria.

Main Methods:

Clinical case description of four Nigerian families presenting with thyrotoxicosis.
Review of existing literature on familial thyrotoxicosis prevalence.
Recommendation for future genomic DNA mutation analysis of the TSH receptor.

Main Results:

The first documented cases of familial thyrotoxicosis in the Nigerian population are presented.
This finding expands the known ethnic distribution of familial thyrotoxicosis.
The study underscores the potential for genetic factors contributing to hyperthyroidism in this demographic.

Conclusions:

Familial thyrotoxicosis occurs in Nigerian families, broadening its known geographic and ethnic prevalence.
Mutation analysis of the TSH receptor is crucial for understanding the genetic etiology in these patients.
Clinicians should maintain a high index of suspicion for familial thyrotoxicosis in Nigerian patients with hyperthyroidism.

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