A Brazilian case of IFAP syndrome with severe congenital ichthyosis and limb malformations caused by a rare variant in MBTPS2.
Rev Paul Pediatr
; 41: e2022057, 2023.
Article
de En
| MEDLINE
| ID: mdl-37042943
ABSTRACT
OBJECTIVE:
The classic triad, which defines IFAP syndrome, is ichthyosis follicularis, alopecia, and photophobia. It is a rare X-linked genetic disorder characterized by multiple congenital anomalies with variable severity, caused by pathogenic variants in the MBTPS2 gene, which encodes a zinc metalloprotease that is essential for normal development. This study aimed to report a case of a Brazilian patient with IFAP syndrome presenting skeletal anomalies, which is a rare finding among patients from different families. CASE DESCRIPTION We describe a male proband with IFAP syndrome showing severe ichthyosis congenita, cryptorchidism, limb malformation, and comprising the BRESHECK syndrome features. Using whole-exome sequencing, we identified a rare missense variant in hemizygosity in the MBTPS2 gene, which had not been identified in other family members.COMMENTS:
This is the first diagnosis of IFAP syndrome in Brazil with a molecular investigation. The present case study thus expands our knowledge on the mutational spectrum of MBPTS2 associated with IFAP syndrome.
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Ichtyose lamellaire
/
Ichtyose
Type d'étude:
Diagnostic_studies
/
Prognostic_studies
Limites:
Humans
/
Male
Pays/Région comme sujet:
America do sul
/
Brasil
Langue:
En
Journal:
Rev Paul Pediatr
Année:
2023
Type de document:
Article
Pays d'affiliation:
Brésil