Total submissions: 8
Submitter | RCV | SCV | Clinical significance | Condition | Last evaluated | Review status | Method | Comment |
---|---|---|---|---|---|---|---|---|
Eurofins Ntd Llc |
RCV000596054 | SCV000704557 | likely pathogenic | not provided | 2018-09-14 | criteria provided, single submitter | clinical testing | |
Labcorp Genetics |
RCV000813259 | SCV000953611 | pathogenic | Autosomal recessive limb-girdle muscular dystrophy type 2E | 2024-01-02 | criteria provided, single submitter | clinical testing | This sequence change replaces arginine, which is basic and polar, with cysteine, which is neutral and slightly polar, at codon 91 of the SGCB protein (p.Arg91Cys). This variant is present in population databases (rs555514820, gnomAD 0.01%). This missense change has been observed in individuals with limb-girdle muscular dystrophy (PMID: 9565988, 17994539). It has also been observed to segregate with disease in related individuals. ClinVar contains an entry for this variant (Variation ID: 499193). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt SGCB protein function with a negative predictive value of 80%. Experimental studies have shown that this missense change does not substantially affect SGCB function (PMID: 22095924). This variant disrupts the p.Arg91 amino acid residue in SGCB. Other variant(s) that disrupt this residue have been observed in individuals with SGCB-related conditions (PMID: 8968749, 9631401), which suggests that this may be a clinically significant amino acid residue. For these reasons, this variant has been classified as Pathogenic. |
Ambry Genetics | RCV001267014 | SCV001445195 | pathogenic | Inborn genetic diseases | 2018-02-01 | criteria provided, single submitter | clinical testing | |
Women's Health and Genetics/Laboratory Corporation of America, |
RCV001779022 | SCV002015169 | pathogenic | Autosomal recessive limb-girdle muscular dystrophy | 2021-10-04 | criteria provided, single submitter | clinical testing | Variant summary: SGCB c.271C>T (p.Arg91Cys) results in a non-conservative amino acid change in the encoded protein sequence. Five of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 2e-05 in 251452 control chromosomes. c.271C>T has been reported in the literature as a compound heterozygous or homozygous genotype in multiple individuals affected with Limb-Girdle Muscular Dystrophy, Autosomal Recessive (example, Duclos_1998, Guglieri_2008, Magri_2015). These data indicate that the variant is very likely to be associated with disease. At least one publication reports experimental evidence evaluating an impact on protein function by confocal immunofluorescence analysis of non-permeabilized cells and classifies this variant as a class I - mutation that did not affect the membrane localization of Sarcoglycan B (Soheilli_2012). Five clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation. All laboratories classified the variant as pathogenic/likely pathogenic. Based on the evidence outlined above, the variant was classified as pathogenic. |
Revvity Omics, |
RCV000813259 | SCV002019198 | pathogenic | Autosomal recessive limb-girdle muscular dystrophy type 2E | 2022-12-16 | criteria provided, single submitter | clinical testing | |
Baylor Genetics | RCV000813259 | SCV004208736 | pathogenic | Autosomal recessive limb-girdle muscular dystrophy type 2E | 2024-02-19 | criteria provided, single submitter | clinical testing | |
Counsyl | RCV000813259 | SCV001132480 | likely pathogenic | Autosomal recessive limb-girdle muscular dystrophy type 2E | 2017-04-17 | no assertion criteria provided | clinical testing | |
Natera, |
RCV000813259 | SCV001460964 | likely pathogenic | Autosomal recessive limb-girdle muscular dystrophy type 2E | 2020-09-16 | no assertion criteria provided | clinical testing |