16-13920184-G-A
Variant summary
Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4_Moderate
The NM_005236.3(ERCC4):c.19G>A(p.Ala7Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000224 in 1,605,942 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/22 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. A7V) has been classified as Uncertain significance.
Frequency
Consequence
NM_005236.3 missense
Scores
Clinical Significance
Conservation
Publications
- xeroderma pigmentosum group FInheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Genomics England PanelApp, G2P, ClinGen
- Fanconi anemia complementation group QInheritance: AR Classification: STRONG, MODERATE Submitted by: G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics
- XFE progeroid syndromeInheritance: AR Classification: STRONG Submitted by: Ambry Genetics
- Fanconi anemiaInheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
- xeroderma pigmentosumInheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
- xeroderma pigmentosum-Cockayne syndrome complexInheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
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ACMG classification
Our verdict: Likely_benign. The variant received -2 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
ERCC4 | NM_005236.3 | c.19G>A | p.Ala7Thr | missense_variant | Exon 1 of 11 | ENST00000311895.8 | NP_005227.1 |
Ensembl
Frequencies
GnomAD3 genomes AF: 0.0000131 AC: 2AN: 152256Hom.: 0 Cov.: 33 show subpopulations
GnomAD2 exomes AF: 0.0000495 AC: 12AN: 242396 AF XY: 0.0000453 show subpopulations
GnomAD4 exome AF: 0.0000234 AC: 34AN: 1453686Hom.: 1 Cov.: 35 AF XY: 0.0000276 AC XY: 20AN XY: 723582 show subpopulations
GnomAD4 genome AF: 0.0000131 AC: 2AN: 152256Hom.: 0 Cov.: 33 AF XY: 0.0000269 AC XY: 2AN XY: 74386 show subpopulations
ClinVar
Submissions by phenotype
Cockayne syndrome;C0268140:Xeroderma pigmentosum, group F;C3808988:Fanconi anemia complementation group Q Uncertain:1
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 (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated. ClinVar contains an entry for this variant (Variation ID: 568412). This variant has not been reported in the literature in individuals affected with ERCC4-related conditions. This variant is present in population databases (rs771117594, gnomAD 0.04%). This sequence change replaces alanine, which is neutral and non-polar, with threonine, which is neutral and polar, at codon 7 of the ERCC4 protein (p.Ala7Thr). -
Inborn genetic diseases Uncertain:1
The c.19G>A (p.A7T) alteration is located in exon 1 (coding exon 1) of the ERCC4 gene. This alteration results from a G to A substitution at nucleotide position 19, causing the alanine (A) at amino acid position 7 to be replaced by a threonine (T). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at