Tubular aggregate myopathy and Stormorken syndrome: Mutation spectrum and genotype/phenotype correlation.
Hum Mutat
; 41(1): 17-37, 2020 01.
Article
en En
| MEDLINE
| ID: mdl-31448844
ABSTRACT
Calcium (Ca2+ ) acts as a ubiquitous second messenger, and normal cell and tissue physiology strictly depends on the precise regulation of Ca2+ entry, storage, and release. Store-operated Ca2+ entry (SOCE) is a major mechanism controlling extracellular Ca2+ entry, and mainly relies on the accurate interplay between the Ca2+ sensor STIM1 and the Ca2+ channel ORAI1. Mutations in STIM1 or ORAI1 result in abnormal Ca2+ homeostasis and are associated with severe human disorders. Recessive loss-of-function mutations impair SOCE and cause combined immunodeficiency, while dominant gain-of-function mutations induce excessive extracellular Ca2+ entry and cause tubular aggregate myopathy (TAM) and Stormorken syndrome (STRMK). TAM and STRMK are spectra of the same multisystemic disease characterized by muscle weakness, miosis, thrombocytopenia, hyposplenism, ichthyosis, dyslexia, and short stature. To date, 42 TAM/STRMK families have been described, and here we report five additional families for which we provide clinical, histological, ultrastructural, and genetic data. In this study, we list and review all new and previously reported STIM1 and ORAI1 cases, discuss the pathomechanisms of the mutations based on the known functions and the protein structure of STIM1 and ORAI1, draw a genotype/phenotype correlation, and delineate an efficient screening strategy for the molecular diagnosis of TAM/STRMK.
Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Bazo
/
Trastornos de las Plaquetas Sanguíneas
/
Biomarcadores
/
Miosis
/
Predisposición Genética a la Enfermedad
/
Miopatías Estructurales Congénitas
/
Dislexia
/
Estudios de Asociación Genética
/
Ictiosis
/
Trastornos Migrañosos
Tipo de estudio:
Prognostic_studies
Límite:
Humans
Idioma:
En
Revista:
Hum Mutat
Asunto de la revista:
GENETICA MEDICA
Año:
2020
Tipo del documento:
Article
País de afiliación:
Francia