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Hereditary neuropathy or pain disorder v6.14 NDUFS6 Eleanor Williams changed review comment from: Associated with Mitochondrial complex I deficiency, nuclear type 9, OMIM: 618232 (AR)

Biallelic loss of function variants are associated with severe CI deficiency and Leigh syndrome in previous reports (PubMed: 19259137 and PubMed: 15372108).

There is now phenotypic expansion with 4 families reported with a less severe phenotype. 3 families share a common variant.

PMID: 38459834 - Camila Armirola-Ricaurte et al 2024. Describe 5 patients from 3 unrelated families from Spain, Turkey and Greece. They share a homozygous NDUFS6 NM_004553.6:c.309+5G>A variant found be exome sequencing and an axonal Charcot-Marie-Tooth (CMT) neuropathy. Age of onset ranged from 1 to 10 years. In all cases the unaffected parents were heterozygous for the variant. The variant is predicted to affect splicing and in family 1 was shown to cause the expression of aberrantly spliced transcripts and negligible levels of the canonical transcript. Haplotype analysis showed that the variant lies on a shared haplotype of 0.74MB on chromosome 5 and estimate the most recent common ancestor with the haplotype would have lived 740 years ago

PMID: 38549004 – Ferreira et al 2024 – screened nearly 11,000 patients with peripheral neuropathy for variants in known mitochondrial disease genes. 1 male was found with a homozygous variant c.320_323delCAAA, p.Thr107LysfsTer40 in NDUFS6.; to: Associated with Mitochondrial complex I deficiency, nuclear type 9, OMIM: 618232 (AR)

Biallelic loss of function variants are associated with severe CI deficiency and Leigh syndrome in previous reports (PubMed: 19259137 Spiegal et al 2009 and PubMed: 15372108 Kirby et al 2004, PMID: 30948790 - Rouzier et al 2019, PMID: 22474353 Ke et al 2012).

There is now phenotypic expansion with 5 families reported with a less severe phenotype. 4 families share a common variant.

PMID: 38459834 - Armirola-Ricaurte et al 2024. Describe 5 patients from 3 unrelated families from Spain, Turkey and Greece. They share a homozygous NDUFS6 NM_004553.6:c.309+5G>A variant found be exome sequencing and an axonal Charcot-Marie-Tooth (CMT) neuropathy. Age of onset ranged from 1 to 10 years. In all cases the unaffected parents were heterozygous for the variant. The variant is predicted to affect splicing and in family 1 was shown to cause the expression of aberrantly spliced transcripts and negligible levels of the canonical transcript. Haplotype analysis showed that the variant lies on a shared haplotype of 0.74MB on chromosome 5 and estimate the most recent common ancestor with the haplotype would have lived 740 years ago

PMID: 38549004 – Ferreira et al 2024 – screened nearly 11,000 patients with peripheral neuropathy for variants in known mitochondrial disease genes. 1 male was found with a homozygous variant c.320_323delCAAA, p.Thr107LysfsTer40 in NDUFS6.

PMID: 38217609 - Gangfuß et al 2024 - identified a homozygous variant (c.309 + 5 G > A) in NDUFS6 in one male patient aged 10 with axonal neuropathy accompanied by loss of small fibers in skin biopsy. The patient also showed optic atrophy and borderline intellectual disability.
Hereditary neuropathy or pain disorder v0.1 NGF Ellen McDonagh gene: NGF was added
gene: NGF was added to Hereditary neuropathy NOT PMP22 copy number. Sources: NHS GMS,Illumina TruGenome Clinical Sequencing Services,London North GLH,Expert list,Emory Genetics Laboratory,UKGTN,Expert Review Green,South West GLH,Radboud University Medical Center, Nijmegen
Mode of inheritance for gene: NGF was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: NGF were set to 14976160; 1317267
Phenotypes for gene: NGF were set to Neuropathy, hereditary sensory and autonomic, type V, 608654; Hereditary Sensory and Autonomic Neuropathy, Type V