rs573603690
Variant summary
Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2
The NM_139076.3(ABRAXAS1):c.322C>G(p.Gln108Glu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000093 in 1,613,626 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. Q108L) has been classified as Uncertain significance.
Frequency
Consequence
NM_139076.3 missense
Scores
Clinical Significance
Conservation
Publications
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ACMG classification
Our verdict: Uncertain_significance. The variant received 2 ACMG points.
Variant Effect in Transcripts
ACMG analysis was done for transcript: NM_139076.3. You can select a different transcript below to see updated ACMG assignments.
RefSeq Transcripts
| Selected | Gene | Transcript | Tags | HGVSc | HGVSp | Effect | Exon Rank | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|---|
| ABRAXAS1 | NM_139076.3 | MANE Select | c.322C>G | p.Gln108Glu | missense | Exon 5 of 9 | NP_620775.2 | ||
| ABRAXAS1 | NM_001345962.2 | c.-6C>G | 5_prime_UTR_premature_start_codon_gain | Exon 4 of 8 | NP_001332891.1 | ||||
| ABRAXAS1 | NM_001345962.2 | c.-6C>G | 5_prime_UTR | Exon 4 of 8 | NP_001332891.1 |
Ensembl Transcripts
| Selected | Gene | Transcript | Tags | HGVSc | HGVSp | Effect | Exon Rank | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|---|
| ABRAXAS1 | ENST00000321945.12 | TSL:1 MANE Select | c.322C>G | p.Gln108Glu | missense | Exon 5 of 9 | ENSP00000369857.3 | ||
| ABRAXAS1 | ENST00000506553.5 | TSL:5 | c.175C>G | p.Gln59Glu | missense | Exon 5 of 9 | ENSP00000426763.1 | ||
| ABRAXAS1 | ENST00000505489.5 | TSL:5 | c.301C>G | p.Gln101Glu | missense | Exon 5 of 7 | ENSP00000480277.1 |
Frequencies
GnomAD3 genomes AF: 0.0000526 AC: 8AN: 152190Hom.: 0 Cov.: 32 show subpopulations
GnomAD2 exomes AF: 0.0000120 AC: 3AN: 251010 AF XY: 0.0000221 show subpopulations
GnomAD4 exome AF: 0.00000479 AC: 7AN: 1461318Hom.: 0 Cov.: 31 AF XY: 0.00000550 AC XY: 4AN XY: 726984 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.0000525 AC: 8AN: 152308Hom.: 0 Cov.: 32 AF XY: 0.0000671 AC XY: 5AN XY: 74476 show subpopulations
Age Distribution
ClinVar
Submissions by phenotype
not provided Uncertain:2
This sequence change replaces glutamine, which is neutral and polar, with glutamic acid, which is acidic and polar, at codon 108 of the ABRAXAS1 protein (p.Gln108Glu). This variant is present in population databases (rs573603690, gnomAD 0.02%). This missense change has been observed in individual(s) with ABRAXAS1-related conditions (PMID: 27270457). ClinVar contains an entry for this variant (Variation ID: 496534). 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 expected to disrupt ABRAXAS1 protein function with a positive predictive value of 80%. 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.
Variant summary: The c. 322C>G (p.Gln103Glu) in FAM178A gene is a missense change that involves a mildly conserved nucleotide and 3/5 in silico tools predict deleterious outcome. The variant is present in the control population dataset of ExAC at frequency of 0.000008 (1/121128 chrs tested). The observed frequency does not exceed the maximum expected allele frequency for a pathogenic variant of 0.00003, suggesting that it is not a common polymorphism. The variant has been reported in at least one affected individual as well as in healthy control group in one large case-control study (Renault, 2016). The variant of interest has not been reported by any reputable database/clinical laboratory. Taking together, the variant was classified as VUS until more information becomes available.
not specified Uncertain:1
The p.Q108E variant (also known as c.322C>G), located in coding exon 5 of the FAM175A gene, results from a C to G substitution at nucleotide position 322. The glutamine at codon 108 is replaced by glutamic acid, an amino acid with highly similar properties. This amino acid position is conserved. In addition, the in silico prediction for this alteration is inconclusive. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear.
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at