On this page, you will find information about a genetic change that was identified in a UDN participant. We are trying to find others with the same or similar condition. (Sharing information on this website is not a requirement of UDN participation. Only descriptions about participants who give explicit consent will appear here.)
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|Date of Report||April 25, 2016|
|Full Gene Name||Rho guanine nucleotide exchange factor 17|
|Location|| Chromosome 11 (11q13.4)
Click to enlarge ideogram in new window (generated using the NCBI Genome Decoration Page )
|Function||The ARHGEF17 gene codes for a guanine nucleotide exchange factor for RhoA GTPases (Rümenapp et al., 2002 ).|
|Database Links||GeneCards: GC11P073306 NCBI Gene: 9828 UniProtKB/Swiss-Prot: Q96PE2|
|Clinical Significance|| Changes in the ARHGEF17 gene were identified in a UDN participant. Research is underway to see if these changes are causing symptoms in this patient.
The participant, a 2-year-old Caucasian female with an undiagnosed condition, was found to carry two copies of the following genetic variant in the ARHGEF17 gene: c.6110G>A/p.R2037Q.
|Gene||Inheritance Pattern||Position||Transcript||DNA Change||Protein Change|
|ARHGEF17||autosomal recessive||chr11:73078743||NM_014786.3||c.6110G>A|| p.R2037Q
After birth, the patient was found to be missing a thyroid (absent thyroid). She proceeded to have difficulty feeding, which may have been the result of facial paralysis. At 9 months, she was brought to the hospital with swelling around both eyes and a biopsy showed atypical histiocytic cells. Her blood pressure has been consistently elevated and she has had intermittent transaminitis. She has also had several bacterial and fungal infections; raised red plaques on her elbows, chest, and face; and one episode of fingertip peeling, which lasted for 2 months. Recently a muscle biopsy of the thigh showed polymyositis, which has caused atrophy of the pelvis and thighs (proximal muscles) and secondary mitochondrial depletion.
Some of her other features include:
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