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Updated: May 25, 2026

In Vivo Functional Study of Disease-associated Rare Human Variants Using Drosophila
Published on: August 20, 2019
A rare heterozygous TRAF6 variant is associated with hypohidrotic ectodermal dysplasia
1Faculty of Public Health WSPiA, 213-215, 28 Czerwca St, 61-485 Poznan, Poland.
Background:
Mutations in the genes encoding components of the tumour necrosis factor (TNF)-α-like pathway cause hypohidrotic ectodermal dysplasia (HED). It has been postulated that the TNF receptor-associated factor 6 (TRAF6) is also involved in this pathway.
Objectives:
To investigate mutations in the TRAF6 gene in an individual with HED.
Methods:
Genetic analysis was performed on TRAF6 in a patient with HED, her parents, her sister and 150 ethnically matched, healthy individuals.
Results:
In the patient, sequencing analysis of one DNA strand revealed a deletion of eight nucleotides (c.1074-1081delCAATTTG) in the 5' fragment of the last exon of TRAF6, while no deletion was detected in the other DNA strand indicating a heterozygous mutation. No such sequence abnormality was detected in the patient's parents and her sister.
Conclusion:
This is the first report of a heterozygous TRAF6 sequence variant associated with symptoms typical of HED.
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