8-47774277-C-G

Position:

• chr8-47774277-C-G

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_006904.7(PRKDC):​c.12283G>C​(p.Glu4095Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 14/18 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: PRKDC NM_006904.7 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.23

Genes affected

PRKDC (HGNC:9413): (protein kinase, DNA-activated, catalytic subunit) This gene encodes the catalytic subunit of the DNA-dependent protein kinase (DNA-PK). It functions with the Ku70/Ku80 heterodimer protein in DNA double strand break repair and recombination. The protein encoded is a member of the PI3/PI4-kinase family.[provided by RefSeq, Jul 2010]

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.047645837).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PRKDC	NM_006904.7	c.12283G>C	p.Glu4095Gln	missense_variant	86/86	ENST00000314191.7
PRKDC	NM_001081640.2	c.12190G>C	p.Glu4064Gln	missense_variant	85/85

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PRKDC	ENST00000314191.7	c.12283G>C	p.Glu4095Gln	missense_variant	86/86	1	NM_006904.7	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Severe combined immunodeficiency due to DNA-PKcs deficiency Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jul 30, 2020

This sequence change replaces glutamic acid with glutamine at codon 4095 of the PRKDC protein (p.Glu4095Gln). The glutamic acid residue is weakly conserved and there is a small physicochemical difference between glutamic acid and glutamine. This variant is not present in population databases (ExAC no frequency). This variant has not been reported in the literature in individuals with PRKDC-related conditions. Experimental studies and prediction algorithms are not available or were not evaluated, and the functional significance of this variant is currently unknown. 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: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.091
BayesDel_addAF	Benign	-0.13	T
BayesDel_noAF	Benign	-0.43
CADD	Benign	16
DANN	Benign	0.94
DEOGEN2	Benign	0.12	T;.
Eigen	Benign	-0.62
Eigen_PC	Benign	-0.62
FATHMM_MKL	Benign	0.48	N
LIST_S2	Benign	0.79	T;T
M_CAP	Benign	0.0014	T
MetaRNN	Benign	0.048	T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	1.8	L;.
MutationTaster	Benign	0.58	D;D
PrimateAI	Benign	0.26	T
REVEL	Benign	0.037
Sift4G	Benign	0.16	T;T
Polyphen		0.0070	B;.
Vest4		0.057
MutPred		0.12		Loss of loop (P = 0.1258);.;
MVP		0.57
MPC		0.17
ClinPred		0.049	T
GERP RS		3.8
Varity_R		0.13
gMVP		0.41

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr8-48686838;