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GRIN2B encephalopathy: novel findings on phenotype, variant clustering, functional consequences and treatment aspects
We aimed for a comprehensive delineation of genetic, functional and phenotypic aspects of GRIN2B encephalopathy and explored potential prospects of personalised medicine. Data of 48 individuals with de novo GRIN2B variants were collected from several diagnostic and research cohorts, as well as from 43 patients from the literature. Functional consequences and response to memantine treatment were investigated in vitro and eventually translated into patient care. In addition to previously known features of intellectual disability, epilepsy and autism, we found evidence that GRIN2B encephalopathy is also frequently associated with movement disorder, cortical visual impairment and MCD revealing novel phenotypic consequences of channelopathies.
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Identification of a Novel GLA Gene Mutation, p.Ile239Met, in Fabry Disease With a Predominant Cardiac Phenotype
Fabry disease (FD) is an X-linked inherited lysosomal storage disorder caused by mutations in the GLA gene, encoding for the enzyme α-galactosidase A. Although hundreds of mutations in the GLA gene have been described, many of them are variants of unknown significance. Here we report a novel GLA mutation, p.Ile239Met, identified in a large Hungarian three-generation family with FD. We conclude that the p.Ile239Met GLA mutation is a pathogenic mutation for FD associated with predominant cardiac phenotype.
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Evidence for inflammation in Fabry’s disease? Headache and muscle involvement responding to corticosteroid and methotrexate treatment
We report the case of a 38-year-old female patient who had been diagnosed as lupus erythematosus because of generalized muscle and burning pain combined with slightly elevated C-reactive protein (CRP) and antinuclear antibodies (ANA) 1:640. Twelve years later, Fabry’s disease was diagnosed by molecular genetics. Lupus erythematosus and any other co-morbid rheumatologic diseases were falsified retrospectively and prospectively according to international classification criteria. This case illustrates, that in addition to the deposition of lyso-gb3 secondary inflammatory mechanisms may play an important role in the pathophysiology of symptoms in Fabry’s disease.
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I want to thank you again for your support in our activity in rare disease field in Romania. It was a great meeting at Rare Disease Day symposium in Bucharest on 23th February. Centogene team participation contributed immensely to our event. It's amazing how much value you offered to our specialists looking to learn about rare diseases and new genomic technologies. Read more...
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and moved back to Lebanon from the US wanting to make a difference in the diagnosis, care and prevention of recurring neurogenetic disorders in the Lebanese. Alas, I was only partially successful, ... Read more
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