Journal article

The expanding LARS2 phenotypic spectrum: HLASA, Perrault syndrome with leukodystrophy, and mitochondrial myopathy

Lisa G Riley, Joelle Rudinger-Thirion, Magali Frugier, Meredith Wilson, Melissa Luig, Thushari Indika Alahakoon, Cheng Yee Nixon, Edwin P Kirk, Tony Roscioli, Sebastian Lunke, Zornitza Stark, Klaas J Wierenga, Sirish Palle, Maie Walsh, Emily Higgs, Susan Arbuckle, Shalini Thirukeswaran, Alison G Compton, David R Thorburn, John Christodoulou

Human Mutation | WILEY | Published : 2020

Abstract

LARS2 variants are associated with Perrault syndrome, characterized by premature ovarian failure and hearing loss, and with an infantile lethal multisystem disorder: Hydrops, lactic acidosis, sideroblastic anemia (HLASA) in one individual. Recently we reported LARS2 deafness with (ovario) leukodystrophy. Here we describe five patients with a range of phenotypes, in whom we identified biallelic LARS2 variants: three patients with a HLASA‐like phenotype, an individual with Perrault syndrome whose affected siblings also had leukodystrophy, and an individual with a reversible mitochondrial myopathy, lactic acidosis, and developmental delay. Three HLASA cases from two unrelated families were iden..

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