rs10776
Variant summary
Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong
The NM_001122955.4(BSCL2):c.745G>T(p.Ala249Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000136 in 1,613,990 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A249T) has been classified as Likely benign.
Frequency
Consequence
NM_001122955.4 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_benign. Variant got -2 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
BSCL2 | NM_001122955.4 | c.745G>T | p.Ala249Ser | missense_variant | 5/11 | ENST00000360796.10 | |
HNRNPUL2-BSCL2 | NR_037946.1 | n.3265G>T | non_coding_transcript_exon_variant | 18/24 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
BSCL2 | ENST00000360796.10 | c.745G>T | p.Ala249Ser | missense_variant | 5/11 | 1 | NM_001122955.4 | A2 |
Frequencies
GnomAD3 genomes AF: 0.0000131 AC: 2AN: 152176Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.00000796 AC: 2AN: 251404Hom.: 0 AF XY: 0.0000147 AC XY: 2AN XY: 135872
GnomAD4 exome AF: 0.0000137 AC: 20AN: 1461814Hom.: 0 Cov.: 34 AF XY: 0.0000138 AC XY: 10AN XY: 727196
GnomAD4 genome AF: 0.0000131 AC: 2AN: 152176Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1AN XY: 74340
ClinVar
Submissions by phenotype
Charcot-Marie-Tooth disease type 2 Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Apr 11, 2021 | In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Tolerated"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The serine amino acid residue is found in multiple mammalian species, suggesting that this missense change does not adversely affect protein function. These predictions have not been confirmed by published functional studies and their clinical significance is uncertain. This variant has not been reported in the literature in individuals with BSCL2-related conditions. ClinVar contains an entry for this variant (Variation ID: 305179). This variant is not present in population databases (ExAC no frequency). This sequence change replaces alanine with serine at codon 185 of the BSCL2 protein (p.Ala185Ser). The alanine residue is weakly conserved and there is a moderate physicochemical difference between alanine and serine. - |
Congenital generalized lipodystrophy type 2 Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Jan 12, 2018 | This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. - |
Neuronopathy, distal hereditary motor, type 5A Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Jan 12, 2018 | This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at