rs529354763
Variant summary
Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2
The NM_006904.7(PRKDC):āc.12343A>Gā(p.Asn4115Asp) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000132 in 1,596,502 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (ā ā ).
Frequency
Consequence
NM_006904.7 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Uncertain_significance. Variant got 2 ACMG points.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes AF: 0.00000657 AC: 1AN: 152120Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.0000452 AC: 10AN: 221284Hom.: 0 AF XY: 0.0000335 AC XY: 4AN XY: 119252
GnomAD4 exome AF: 0.0000138 AC: 20AN: 1444264Hom.: 0 Cov.: 30 AF XY: 0.0000140 AC XY: 10AN XY: 716540
GnomAD4 genome AF: 0.00000657 AC: 1AN: 152238Hom.: 0 Cov.: 32 AF XY: 0.0000134 AC XY: 1AN XY: 74448
ClinVar
Submissions by phenotype
not specified Uncertain:2
Variant summary: PRKDC c.12340A>G/p.Asn4114Asp(also known as c.12343A>G/p.Asn4115Asp) results in a conservative amino acid change in the encoded protein sequence. Three of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 4.5e-05 in 221284 control chromosomes (gnomAD). This frequency is not significantly higher than estimated for a pathogenic variant in PRKDC causing Severe Combined Immunodeficiency (4.5e-05 vs 0.00035), allowing no conclusion about variant significance. To our knowledge, no occurrence of c.12340A>G in individuals affected with Severe Combined Immunodeficiency and no experimental evidence demonstrating its impact on protein function have been reported. One submitter has cited clinical-significance assessments for this variant to ClinVar after 2014 and has classified the variant as uncertain significance. Based on the evidence outlined above, the variant was classified as uncertain significance. -
The p.N4115D variant (also known as c.12343A>G), located in coding exon 86 of the PRKDC gene, results from an A to G substitution at nucleotide position 12343. The asparagine at codon 4115 is replaced by aspartic acid, an amino acid with highly similar properties. This amino acid position is conserved. In addition, this alteration is predicted to be tolerated by in silico analysis. Based on the available evidence, the clinical significance of this variant remains unclear. -
Severe combined immunodeficiency due to DNA-PKcs deficiency Uncertain:1
This sequence change replaces asparagine with aspartic acid at codon 4115 of the PRKDC protein (p.Asn4115Asp). The asparagine residue is moderately conserved and there is a small physicochemical difference between asparagine and aspartic acid. This variant is present in population databases (rs529354763, ExAC 0.07%). This variant has not been reported in the literature in individuals with PRKDC-related conditions. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Tolerated"; PolyPhen-2: "Probably damaging"; Align-GVGD: "Class C0"). 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. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at