Genetic and phenotypic spectrum in the NONO-associated syndromic disorder.
Am J Med Genet A
; 191(2): 469-478, 2023 02.
Article
em En
| MEDLINE
| ID: mdl-36426740
ABSTRACT
The non-POU domain-containing octamer-binding (NONO) protein is involved in multiple steps of gene regulation such as RNA metabolism and DNA repair. Hemizygous pathogenic variants in the NONO gene were confirmed to cause a rare X-linked syndromic disorder. Through our in-house diagnostics and subsequent matchmaking, we identified six unrelated male individuals with pathogenic or likely pathogenic NONO variants. For a detailed comparison, we reviewed all published characterizations of the NONO-associated disorder. The combined cohort consists of 16 live-born males showing developmental delay, corpus callosum anomalies, non-compaction cardiomyopathy and relative macrocephaly as leading symptoms. Seven prenatal literature cases were characterized by cardiac malformations. In this study, we extend the phenotypic spectrum through two more cases with epilepsy as well as two more cases with hematologic anomalies. By RNA expression analysis and structural modeling of a new in-frame splice deletion, we reinforce loss-of-function as the pathomechanism for the NONO-associated syndromic disorder.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Cardiopatias Congênitas
/
Cardiomiopatias
Tipo de estudo:
Risk_factors_studies
Limite:
Humans
/
Male
Idioma:
En
Revista:
Am J Med Genet A
Assunto da revista:
GENETICA MEDICA
Ano de publicação:
2023
Tipo de documento:
Article
País de afiliação:
Alemanha