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- Henriksen, M. W., et al.
(författare)
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Genetic and clinical variations in a Norwegian sample diagnosed with Rett syndrome
- 2020
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Ingår i: Brain & Development. - : Elsevier BV. - 0387-7604. ; 42:7, s. 484-495
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Tidskriftsartikel (refereegranskat)abstract
- Background and purpose: Rett syndrome (RTT) is a neurodevelopmental disorder mainly caused by mutations in MECP2. The diagnostic criteria of RTT are clinical; mutations in MECP2 are neither diagnostic nor necessary, and a mutation in another gene does not exclude RTT. We attempted to correlate genotype and phenotype to see if there are significant clinical associations. Methods: All available females diagnosed with RTT in Norway were invited to the study. Parents were interviewed, the girl or woman with RTT examined and medical records reviewed. All diagnoses were revisited according to the current diagnostic criteria and exome-based sequencing analyses were performed in individuals without an identified causative mutation. Participants were categorized according to genotypes and RTT diagnosis. Individuals with RTT with and without mutations in MECP2 were compared. Results: Ninety-one individuals were included. A presumed causative mutation was identified in 86 individuals, of these, mutations in MECP2 in 77 individuals and mutations in SMC1A, SYNGAP1, SCN1A, CDKL5, FOXG1 or chromosome 13q in nine. Seventy-two individuals fulfilled the diagnostic criteria for classic and 12 for atypical RTT. Significant differences in early development, loss of hand use and language, intense eye gaze and the presence of early onset epilepsy were revealed in individuals with RTT according to their MECP2 genotypic status. Conclusion: Using the current diagnostic criteria, genetic and clinical variation in RTT is considerable. Significant differences between individuals with RTT with and without MECP2 mutations indicate that MECP2 is a major determinant for the clinical phenotype in individuals with RTT. (C) 2020 The Japanese Society of Child Neurology. Published by Elsevier B.V. All rights reserved.
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| 2. |
- Henriksen, M. W., et al.
(författare)
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Medical Issues in Adults with Rett Syndrome–A National Survey
- 2020
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Ingår i: Developmental Neurorehabilitation. - : Informa UK Limited. - 1751-8423 .- 1751-8431. ; 23:2, s. 106-112
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Tidskriftsartikel (refereegranskat)abstract
- Objectives: To examine main health issues in a population of females with Rett syndrome, with a focus on individuals aged 36 or older. Methods: A national survey including 85 females, divided into a younger (1–20years), a middle (21–35years) and an older group (36–66years). Data include clinical examination, medical records and parental interviews. Prevalences of six main medical issues (scoliosis, ambulation, growth, respiration, gastrointestinal dysmobility and epilepsy) and severity scores in the three groups were compared. Results: Mean severity scores were 11.8, 15.1 and 13.7 (from younger to older), and the difference between the younger and the middle group was significant. No other major significant prevalence differences were observed. Conclusions: Most main medical issues in Rett syndrome continued to be a major concern in adulthood, but health did not seem to decline with increasing age. The results emphasize the need for clinical follow-up throughout adulthood. © 2019, © 2019 Taylor & Francis Group, LLC.
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