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Paschell P, Laukaitis C. Significant phenotypic variability in a multigenerational family with an NFIA missense mutation: Case series and review of the literature. Clin Case Rep 2024; 12:e8307. [PMID: 38188845 PMCID: PMC10769898 DOI: 10.1002/ccr3.8307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 11/09/2023] [Accepted: 11/18/2023] [Indexed: 01/09/2024] Open
Abstract
We report the first multigenerational family with NFIA-related disorder from a missense variant. This case highlights the condition's phenotypic variability and the need for genetic testing when an initial diagnosis fails to explain all symptoms.
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Affiliation(s)
- Peyton Paschell
- Carle Illinois College of MedicineUniversity of Illinois at Urbana‐ChampaignUrbanaIllinoisUSA
| | - Christina Laukaitis
- Carle Illinois College of MedicineUniversity of Illinois at Urbana‐ChampaignUrbanaIllinoisUSA
- Carle Foundation HospitalUrbanaIllinoisUSA
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Koti AS, Lanis A, Finlayson S, Canny S, Feldman EA, Miller DE, Rosenwasser N, Scott AA, Wong SC, Feldman KW. Subdural hemorrhage, macrocephaly, rash, and developmental delay in an infant: A pathogenic variant in NLRP3 causes CINCA/NOMID. Am J Med Genet A 2023; 191:2825-2830. [PMID: 37548074 DOI: 10.1002/ajmg.a.63366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 05/15/2023] [Accepted: 07/26/2023] [Indexed: 08/08/2023]
Abstract
Subdural hemorrhages (SDHs) in children are most often observed in abusive head trauma (AHT), a distinct form of traumatic brain injury, but they may occur in other conditions as well, typically with clear signs and symptoms of an alternative diagnosis. We present a case of an infant whose SDH initially raised the question of AHT, but multidisciplinary evaluation identified multiple abnormalities, including rash, macrocephaly, growth failure, and elevated inflammatory markers, which were all atypical for trauma. These, along with significant cerebral atrophy, ventriculomegaly, and an absence of other injuries, raised concerns for a genetic disorder, prompting genetic consultation. Clinical trio exome sequencing identified a de novo likely pathogenic variant in NLRP3, which is associated with chronic infantile neurological, cutaneous, and articular (CINCA) syndrome, also known as neonatal-onset multisystem inflammatory disease (NOMID). He was successfully treated with interleukin-1 blockade, highlighting the importance of prompt treatment in CINCA/NOMID patients. This case also illustrates how atraumatic cases of SDH can be readily distinguished from AHT with multidisciplinary collaboration and careful consideration of the clinical history and exam findings.
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Affiliation(s)
- Ajay S Koti
- Safe Child and Adolescent Network, Department of Pediatrics, University of Washington School of Medicine, Seattle Children's Hospital, Seattle, Washington, USA
| | - Aviya Lanis
- Division of Rheumatology, University of Washington School of Medicine, Seattle Children's Hospital, Seattle, Washington, USA
| | - Samuel Finlayson
- Division of Genetic Medicine, University of Washington School of Medicine, Seattle Children's Hospital, Seattle, Washington, USA
| | - Susan Canny
- Division of Rheumatology, University of Washington School of Medicine, Seattle Children's Hospital, Seattle, Washington, USA
| | - Elana A Feldman
- Safe Child and Adolescent Network, Department of Pediatrics, University of Washington School of Medicine, Seattle, Washington, USA
| | - Danny E Miller
- Division of Genetic Medicine, Department of Laboratory Medicine and Pathology, University of Washington School of Medicine, Seattle Children's Hospital, Seattle, Washington, USA
| | - Natalie Rosenwasser
- Division of Rheumatology, University of Washington School of Medicine, Seattle Children's Hospital, Seattle, Washington, USA
| | - Abbey A Scott
- Division of Genetic Medicine, Seattle Children's Hospital, Seattle, Washington, USA
| | - Stephen C Wong
- Division of Rheumatology, University of Washington School of Medicine, Seattle Children's Hospital, Seattle, Washington, USA
| | - Kenneth W Feldman
- Safe Child and Adolescent Network, Department of Pediatrics, University of Washington School of Medicine, Seattle Children's Hospital, Seattle, Washington, USA
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Phenotypic Spectrum of NFIA Haploinsufficiency: Two Additional Cases and Review of the Literature. Genes (Basel) 2022; 13:genes13122249. [PMID: 36553517 PMCID: PMC9777632 DOI: 10.3390/genes13122249] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Revised: 11/21/2022] [Accepted: 11/26/2022] [Indexed: 12/02/2022] Open
Abstract
The NFIA (nuclear factor I/A) gene encodes for a transcription factor belonging to the nuclear factor I family and has key roles in various embryonic differentiation pathways. In humans, NFIA is the major contributor to the phenotypic traits of "Chromosome 1p32p31 deletion syndrome". We report on two new cases with deletions involving NFIA without any other pathogenic protein-coding gene alterations. A cohort of 24 patients with NFIA haploinsufficiency as the sole anomaly was selected by reviewing the literature and public databases in order to analyze all clinical features reported and their relative frequencies. This process was useful because it provided an overall picture of the phenotypic outcome of NFIA haploinsufficiency and helped to define a cluster of phenotypic traits that can facilitate clinicians in identifying affected patients. NFIA haploinsufficiency can be suspected by a careful observation of the dysmorphisms (macrocephaly, craniofacial, and first-finger anomalies), and this potential diagnosis is strengthened by the presence of intellectual and developmental disabilities or other neurodevelopmental disorders. Further clues of NFIA haploinsufficiency can be provided by instrumental tests such as MRI and kidney urinary tract ultrasound and confirmed by genetic testing.
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