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Gana S, Serpieri V, Giorgio E, Iorio M, Rognone E, Pichiecchio A, Chiappedi M, Valente EM. Marked intrafamilial variability of clinical and neuroimaging manifestations in NFIB-related developmental disorder. Am J Med Genet A 2023; 191:1395-1400. [PMID: 36756855 DOI: 10.1002/ajmg.a.63138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 12/23/2022] [Accepted: 01/20/2023] [Indexed: 02/10/2023]
Abstract
NFIB belongs to the nuclear factor I (NFI) family of transcription factors that, by activating or repressing gene expression during embryogenesis, has a relevant role in the development of several organs including the brain. Heterozygous pathogenic variants of NFIB have recently been associated with developmental delay and mild-to-moderate intellectual disability, macrocephaly, nonspecific facial dysmorphisms, and corpus callosum dysgenesis. We identified a heterozygous missense variant in the NFIB gene in a 15-year-old boy with neurodevelopmental disorder and brain malformations, who inherited the variant from his substantially healthy mother presenting only minor physical and neuroanatomical defects.
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Affiliation(s)
- Simone Gana
- Neurogenetics Research Center, IRCCS Mondino Foundation, Pavia, Italy
| | | | - Elisa Giorgio
- Neurogenetics Research Center, IRCCS Mondino Foundation, Pavia, Italy.,Department of Molecular Medicine, University of Pavia, Pavia, Italy
| | - Melanie Iorio
- Department of Brain and Behavioual Sciences, University of Pavia, Pavia, Italy
| | - Elisa Rognone
- Advanced Imaging and Radiomics Center, Neuroradiology Department, IRCCS Mondino Foundation, Pavia, Italy
| | - Anna Pichiecchio
- Department of Brain and Behavioual Sciences, University of Pavia, Pavia, Italy.,Advanced Imaging and Radiomics Center, Neuroradiology Department, IRCCS Mondino Foundation, Pavia, Italy
| | - Matteo Chiappedi
- Child Neurology and Psychiatry Unit, ASST Pavia, Vigevano, Italy
| | - Enza Maria Valente
- Neurogenetics Research Center, IRCCS Mondino Foundation, Pavia, Italy.,Department of Molecular Medicine, University of Pavia, Pavia, Italy
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