Expanding the Phenotype of Hereditary Congenital Facial Paresis Type 3.
Int J Mol Sci
; 25(1)2023 Dec 21.
Article
in En
| MEDLINE
| ID: mdl-38203298
ABSTRACT
The HOXB1 gene encodes a homeobox transcription factor pivotal in the development of rhombomere 4. Biallelic pathogenic variants in this gene are associated with congenital facial paresis type 3 (HCFP3). Only seven single nucleotide variants have been reported in the literature to date. Here, we report a 27-year-old female with a unique presentation of HCFP3 with two novel compound-heterozygous missense variants c.763C>G, p.(Arg255Gly), which arose de novo and an inherited c.781C>T, p.(Arg261Cys) variant. The patient exhibited HCFP3 symptoms with mild upward esodeviation and lacked the documented ear malformations common in HCFP. For many years, she was misdiagnosed with facio-scapulo-humeral muscular dystrophy, due to complaints of shoulder girdle and neck muscle weakness. No alternative genetic or acquired causes of neck and shoulder girdle weakness were found, suggesting its potential inclusion in the phenotypic spectrum.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Muscular Dystrophy, Facioscapulohumeral
/
Facial Paralysis
Type of study:
Diagnostic_studies
Limits:
Adult
/
Female
/
Humans
Language:
En
Journal:
Int J Mol Sci
Year:
2023
Document type:
Article
Affiliation country:
RUSSIA