Squamosal Suture Craniosynostosis Due to Hyperthyroidism Caused by an Activating Thyrotropin Receptor Mutation (T632I).

Details

Serval ID
serval:BIB_CBE19117807B
Type
Article: article from journal or magazin.
Collection
Publications
Title
Squamosal Suture Craniosynostosis Due to Hyperthyroidism Caused by an Activating Thyrotropin Receptor Mutation (T632I).
Journal
Thyroid
Author(s)
Chawla R., Alden T.D., Bizhanova A., Kadakia R., Brickman W., Kopp P.A.
ISSN
1557-9077 (Electronic)
ISSN-L
1050-7256
Publication state
Published
Issued date
10/2015
Peer-reviewed
Oui
Volume
25
Number
10
Pages
1167-1172
Language
english
Notes
Publication types: Case Reports ; Journal Article
Publication Status: ppublish
Abstract
Congenital hyperthyroidism can be a cause of failure to thrive, hyperactivity, developmental delay, and craniosynostosis during infancy. Most commonly, the condition occurs in the setting of maternal autoimmune thyroid disease. Rarely, congenital hyperthyroidism can also occur secondary to activating mutations within the thyrotropin (TSH) receptor.
A Hispanic male infant presented at age 6 months with severe thyrotoxicosis. At the time of presentation he was being evaluated for squamosal suture synostosis and he was noted to have significant developmental delays.
The patient's thyrotoxicosis was initially treated with antithyroid medication, and he subsequently underwent craniosynostosis repair leading to neurodevelopmental improvement. DNA from the patient and his parents was submitted for mutational analysis of exons 9 and 10 of the TSH receptor. He was found to carry a monoallelic transition 1895C>T in exon 10 that resulted in the substitution of threonine at position 632 by isoleucine (T32I). This mutation resulted in constitutive activation of the TSH receptor. Neither parent carried this mutation indicating that the child has acquired a de novo germline mutation.
We report the first case of squamosal suture craniosynostosis in a patient with non-autoimmune hyperthyroidism. Squamosal suture craniosynotosis is rare, often has a subtle presentation, and should be considered in all patients with this condition because prompt treatment of hyperthyroidism and craniosynotosis repair can lead to normalization of neurodevelopment.
Keywords
Child, Preschool, Craniosynostoses/genetics, DNA Mutational Analysis, Humans, Hyperthyroidism/genetics, Infant, Male, Mutation, Receptors, Thyrotropin/genetics
Pubmed
Web of science
Create date
27/12/2020 14:03
Last modification date
28/12/2020 6:26
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