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Bone marrow transplantation reverses metabolic alterations in multiple sulfatase deficiency: a case series.

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Department of Pediatrics, Division of Blood and Marrow Transplantation, University of Minnesota, Minneapolis, MN, USA.

Background: Multiple sulfatase deficiency (MSD) is an exceptionally rare neurodegenerative disorder due to the absence or deficiency of 17 known cellular sulfatases. The activation of all these cellular sulfatases is dependent on the presence of the formylglycine-generating enzyme, which is encoded by the SUMF1 gene. Disease-causing homozygous or compound heterozygous variants in SUMF1 result in MSD.

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Background & objectives Alkaptonuria (AKU) is an autosomal recessive disease wherein biallelic pathogenic variants in the homogentisate 1,2- dioxygenase (HGD) gene encoding the enzyme homogentisate 1,2 dioxygenase cause high levels of homogentisic acid (HGA) to circulate within the body leading to its deposition in connective tissues and excretion in urine. A homozygous splice donor variant (c.87+1G>A) has been identified to be the founder variant causing alkaptonuria among Narikuravars, a group of gypsies settled in Tamil Nadu.

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Harnessing global HLA data for enhanced patient matching in iPSC haplobanks.

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Scottish National Blood Transfusion Service, Edinburgh, UK; Global Alliance for iPSC Therapies, Jack Copland Centre, Heriot-Watt Research Park, Edinburgh, UK.

Background: Several countries have either developed or are developing national induced pluripotent stem cell (iPSC) banks of cell lines derived from donors with HLA homozygous genotypes (two identical haplotypes) prevalent in their local populations to provide immune matched tissues and cells to support regenerative medicine therapies. This 'haplobank' approach relies on knowledge of the HLA genotypes of the population to identify the most beneficial haplotypes for patient coverage, and ultimately identify donors or cord blood units carrying two copies of the target haplotype.

Aims: A potentially more efficient alternative to a national bank approach is to assess the haplotypes required to provide global patient coverage and to produce a single, global haplobank.

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EHMT2 as a Candidate Gene for an Autosomal Recessive Neurodevelopmental Syndrome.

Mol Neurobiol

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Department of Genetics and Evolutionary Biology, Institute of Biosciences, Human Genome and Stem Cell Research Center, University of Sao Paulo (USP), Sao Paulo, SP, Brazil.

Neurodevelopmental disorders (NDD) comprise clinical conditions with high genetic heterogeneity and a notable enrichment of genes involved in regulating chromatin structure and function. The EHMT1/2 epigenetic complex plays a crucial role in repression of gene transcription in a highly tissue- and temporal-specific manner. Mutations resulting in heterozygous loss-of-function (LoF) of EHMT1 are implicated in Kleefstra syndrome 1 (KS1).

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Background: Homozygous inheritance of the R haplotype, characterized by the absence of the high frequency antigen Sec, as well as partial C and e antigens, is rare and is associated with potential for alloimmunization. Anti-Sec has been reported to be associated with a risk of delayed hemolytic transfusion reaction and hemolytic disease of the fetus and newborn (HDFN).

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