rs797045892

Positions:

• chr19-49861765-A-ACGCTACCTGGCGCGGCTCG

Variant summary

Our verdict is Benign. Variant got -16 ACMG points: 0P and 16B. BP6_Very_Strong BS1 BS2

The NM_007254.4(PNKP):​c.1298+6_1298+7insCGAGCCGCGCCAGGTAGCG variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00046 in 1,566,764 control chromosomes in the GnomAD database, including 2 homozygotes. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.0025 (2 hom., cov: 32)
  • Exomes 𝑓: 0.00024 (0 hom.)
• Consequence: PNKP NM_007254.4 splice_region, intron
• Clinical Significance: Likely benign criteria provided, multiple submitters, no conflicts B:7
• Conservation: PhyloP100: -3.81

Genes affected

PNKP (HGNC:9154): (polynucleotide kinase 3'-phosphatase) This locus represents a gene involved in DNA repair. In response to ionizing radiation or oxidative damage, the protein encoded by this locus catalyzes 5' phosphorylation and 3' dephosphorylation of nucleic acids. Mutations at this locus have been associated with microcephaly, seizures, and developmental delay.[provided by RefSeq, Sep 2010]

ACMG classification

Verdict is Benign. Variant got -16 ACMG points.

• BP6: Variant 19-49861765-A-ACGCTACCTGGCGCGGCTCG is Benign according to our data. Variant chr19-49861765-A-ACGCTACCTGGCGCGGCTCG is described in ClinVar as [Likely_benign]. Clinvar id is 206428.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00252 (383/152238) while in subpopulation AFR AF= 0.00872 (362/41528). AF 95% confidence interval is 0.00798. There are 2 homozygotes in gnomad4. There are 164 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
• BS2: High Homozygotes in GnomAd4 at 2 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PNKP	NM_007254.4	c.1298+6_1298+7insCGAGCCGCGCCAGGTAGCG		splice_region_variant, intron_variant		ENST00000322344.8	NP_009185.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PNKP	ENST00000322344.8	c.1298+6_1298+7insCGAGCCGCGCCAGGTAGCG		splice_region_variant, intron_variant		1	NM_007254.4	ENSP00000323511	P1

Frequencies

GnomAD3 genomes AF: 0.00250 AC: 380 AN: 152120 Hom.: 2 Cov.: 32

Gnomad AFR AF: 0.00867

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000916

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000147

Gnomad OTH AF: 0.00287

GnomAD3 exomes AF: 0.000489 AC: 86 AN: 175710 Hom.: 0 AF XY: 0.000329 AC XY: 31 AN XY: 94316

Gnomad AFR exome AF: 0.00732

Gnomad AMR exome AF: 0.000336

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000274

Gnomad OTH exome AF: 0.000417

GnomAD4 exome AF: 0.000239 AC: 338 AN: 1414526 Hom.: 0 Cov.: 38 AF XY: 0.000201 AC XY: 141 AN XY: 699848

Gnomad4 AFR exome AF: 0.00907

Gnomad4 AMR exome AF: 0.000372

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000276

Gnomad4 OTH exome AF: 0.000478

GnomAD4 genome AF: 0.00252 AC: 383 AN: 152238 Hom.: 2 Cov.: 32 AF XY: 0.00220 AC XY: 164 AN XY: 74426

Gnomad4 AFR AF: 0.00872

Gnomad4 AMR AF: 0.000914

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000147

Gnomad4 OTH AF: 0.00284

Alfa AF: 0.00110 Hom.: 0

Asia WGS AF: 0.000577 AC: 2 AN: 3478

ClinVar

Significance: Likely benign

Submissions summary: Benign:7

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not specified Benign:2

Likely benign, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Jul 27, 2017	- -
Likely benign, criteria provided, single submitter	clinical testing	Genetic Services Laboratory, University of Chicago	Mar 18, 2019	- -

not provided Benign:2

Likely benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Apr 01, 2023	PNKP: PP3, BS2 -
Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Sep 01, 2020	- -

Inborn genetic diseases Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Sep 15, 2022

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

PNKP-related disorder Benign:1

Benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Jul 01, 2019

This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Developmental and epileptic encephalopathy, 12 Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 28, 2024

- -

Computational scores

Source: dbNSFP v4.3

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs760249644; hg19: chr19-50365022;