Accueil > articulos > Heterozygous SSBP1 start loss mutation co-segregates with hearing loss and the m.1555A>G mtDNA variant in a large multigenerational family
Resumen: The m.1555A>G mtDNA variant causes maternally inherited deafness, but the reasons for the highly variable clinical penetrance are not known. Exome sequencing identified a heterozygous start loss mutation in SSBP1, encoding the single stranded binding protein 1 (SSBP1), segregating with hearing loss in a multi-generational family transmitting m.1555A>G, associated with mtDNA depletion and multiple deletions in skeletal muscle. The SSBP1 mutation reduced steady state SSBP1 levels leading to a perturbation of mtDNA metabolism, likely compounding the intra-mitochondrial translation defect due to m.1555A>G in a tissue-specific manner. This family demonstrates the importance of rare trans-acting genetic nuclear modifiers in the clinical expression of mtDNA disease. Idioma: Inglés DOI: 10.1093/brain/awx295 Año: 2018 Publicado en: Brain 141, 1 (2018), 55-62 ISSN: 0006-8950 Factor impacto JCR: 11.814 (2018) Categ. JCR: NEUROSCIENCES rank: 11 / 266 = 0.041 (2018) - Q1 - T1 Categ. JCR: CLINICAL NEUROLOGY rank: 6 / 199 = 0.03 (2018) - Q1 - T1 Factor impacto SCIMAGO: 5.978 - Neurology (clinical) (Q1) - Medicine (miscellaneous) (Q1)