Expanding phenotype with severe midline brain anomalies and missense variant supports a causal role for FOXA2 in 20p11.2 deletion syndrome.
Am J Med Genet A
; 179(9): 1783-1790, 2019 09.
Article
em En
| MEDLINE
| ID: mdl-31294511
ABSTRACT
Rare individuals with 20p11.2 proximal deletions have been previously reported, with a variable phenotype that includes heterotaxy, biliary atresia, midline brain defects associated with panhypopituitarism, intellectual disability, scoliosis, and seizures. Deletions have ranged in size from 277 kb to 11.96 Mb. We describe a newborn with a de novo 2.7 Mb deletion of 20p11.22p11.21 that partially overlaps previously reported deletions and encompasses FOXA2. Her clinical findings further expand the 20p11.2 deletion phenotype to include severe midline cranial and intracranial defects such as aqueductal stenosis with hydrocephalus, mesencephalosynapsis with diencephalic-mesencephalic junction dysplasia, and pyriform aperture stenosis. We also report one individual with a missense variant in FOXA2 who had abnormal glucose homeostasis, panhypopituitarism, and endodermal organ dysfunction. Together, these findings support the critical role of FOXA2 in panhypopituitarism and midline defects.
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Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Encéfalo
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Constrição Patológica
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Fator 3-beta Nuclear de Hepatócito
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Hipopituitarismo
Limite:
Humans
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Newborn
Idioma:
En
Ano de publicação:
2019
Tipo de documento:
Article