期刊
AMERICAN JOURNAL OF MEDICAL GENETICS PART A
卷 173, 期 3, 页码 771-775出版社
WILEY
DOI: 10.1002/ajmg.a.38083
关键词
tuberous sclerosis complex; genotype-phenotype association; rhabdomyoma; genetic counseling; TSC2
资金
- TSC Rare Disease Clinical Research Network (RDCRN) [1U54NS092090-01]
- Autism Center of Excellence Network [1U01NS082320-01]
- RDCRN [1U54NS092090-01]
- BC Children's Hospital
- Michelle Foundation
- TS Association (UK)
Tuberous sclerosis complex (TSC) is an autosomal dominantly inherited disorder with variable expressivity associated with hamartomatous tumors, abnormalities of the skin, and neurologic problems including seizures, intellectual disability, and autism. TSC is caused by pathogenic variants in either TSC1 or TSC2. In general, TSC2 pathogenic variants are associated with a more severe phenotype than TSC1 pathogenic variants. Here, we report a pathogenic TSC2 variant, c.1864C>T, p.(Arg622Trp), associated with a mild phenotype, with most carriers meeting fewer than two major clinical diagnostic criteria for TSC. This finding has significant implications for counseling patients regarding prognosis. More patient data are required before changing the surveillance recommendations for patients with the reported variant. However, consideration should be given to tailoring surveillance recommendations for all pathogenic TSC1 and TSC2 variants with documented milder clinical sequelae. (C) 2017 Wiley Periodicals, Inc.
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