8-47915346-T-G

Variant names:

• chr8-47915346-T-G
• rs758007075
• NM_006904.7:c.2599A>C

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2 BP4

The NM_006904.7(PRKDC):​c.2599A>C​(p.Asn867His) variant causes a missense change. The variant allele was found at a frequency of 0.00000572 in 1,398,902 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts 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. N867D) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000057 (0 hom.)
• Consequence: PRKDC NM_006904.7 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 6.25
• Publications: 1 publications found

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]

PRKDC Gene-Disease associations (from GenCC):

• severe combined immunodeficiency due to DNA-PKcs deficiency

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE, LIMITED Submitted by: ClinGen, Orphanet, Labcorp Genetics (formerly Invitae), Ambry Genetics

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.36732596).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_006904.7. 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
	PRKDC	NM_006904.7	MANE Select	c.2599A>C	p.Asn867His	missense	Exon 23 of 86	NP_008835.5
	PRKDC	NM_001081640.2		c.2599A>C	p.Asn867His	missense	Exon 23 of 85	NP_001075109.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PRKDC	ENST00000314191.7	TSL:1 MANE Select	c.2599A>C	p.Asn867His	missense	Exon 23 of 86	ENSP00000313420.3
	PRKDC	ENST00000338368.7	TSL:1	c.2599A>C	p.Asn867His	missense	Exon 23 of 85	ENSP00000345182.4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.0000157 AC: 3 AN: 191364 AF XY: 0.0000195

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.000118

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000572 AC: 8 AN: 1398902 Hom.: 0 Cov.: 27 AF XY: 0.00000577 AC XY: 4 AN XY: 693614

African (AFR) AF: 0.00 AC: 0 AN: 31656

American (AMR) AF: 0.000166 AC: 6 AN: 36232

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25142

East Asian (EAS) AF: 0.00 AC: 0 AN: 38688

South Asian (SAS) AF: 0.00 AC: 0 AN: 77976

European-Finnish (FIN) AF: 0.0000195 AC: 1 AN: 51402

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5484

European-Non Finnish (NFE) AF: 9.31e-7 AC: 1 AN: 1074196

Other (OTH) AF: 0.00 AC: 0 AN: 58126

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ExAC AF: 0.0000250 AC: 3

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not specified Uncertain:1

Nov 09, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.2599A>C (p.N867H) alteration is located in exon 23 (coding exon 23) of the PRKDC gene. This alteration results from a A to C substitution at nucleotide position 2599, causing the asparagine (N) at amino acid position 867 to be replaced by a histidine (H). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear.

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

Nov 15, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant is present in population databases (rs758007075, gnomAD 0.01%). 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. 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 PRKDC protein function. ClinVar contains an entry for this variant (Variation ID: 571727). This variant has not been reported in the literature in individuals affected with PRKDC-related conditions. This sequence change replaces asparagine, which is neutral and polar, with histidine, which is basic and polar, at codon 867 of the PRKDC protein (p.Asn867His).

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.23
BayesDel_addAF	Benign	-0.13	T
BayesDel_noAF	Benign	-0.20
CADD	Uncertain	25
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.43	T
Eigen	Uncertain	0.57
Eigen_PC	Uncertain	0.54
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.94	D
M_CAP	Uncertain	0.26	D
MetaRNN	Benign	0.37	T
MetaSVM	Uncertain	-0.088	T
PhyloP100		6.3
PrimateAI	Benign	0.37	T
PROVEAN	Uncertain	-3.1	D
REVEL	Benign	0.14
Sift	Uncertain	0.0030	D
Sift4G	Pathogenic	0.0	D
Polyphen		1.0	D
Vest4		0.36
MutPred		0.24		Loss of ubiquitination at K868 (P = 0.0656)
MVP		0.70
MPC		0.63
ClinPred		0.94	D
GERP RS		4.8
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.52
gMVP		0.54
Mutation Taster		=76/24	polymorphism

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

Other links and lift over

dbSNP: rs758007075; hg19: chr8-48827906;