chr19-49867147-G-A

Variant names:

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_007254.4(PNKP):c.58C>T(p.Pro20Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00891 in 1,612,296 control chromosomes in the GnomAD database, including 84 homozygotes. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P20T) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0091 ( 8 hom., cov: 34)

Exomes 𝑓: 0.0089 ( 76 hom. )

Consequence

PNKP
NM_007254.4 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:13

Conservation

PhyloP100: 2.37

Publications

19 publications found

Variant links:

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]

PNKP Gene-Disease associations (from GenCC):

ataxia - oculomotor apraxia type 4
Inheritance: AR Classification: DEFINITIVE, SUPPORTIVE Submitted by: Laboratory for Molecular Medicine, G2P, Orphanet
microcephaly, seizures, and developmental delay
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, ClinGen
Charcot-Marie-Tooth disease type 2B2
Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae)
genetic developmental and epileptic encephalopathy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

PNKP links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.008277416).

BP6

Variant 19-49867147-G-A is Benign according to our data. Variant chr19-49867147-G-A is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 95486.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population amr. GnomAd4 allele frequency = 0.00914 (1392/152344) while in subpopulation AMR AF = 0.0108 (166/15306). AF 95% confidence interval is 0.01. There are 8 homozygotes in GnomAd4. There are 608 alleles in the male GnomAd4 subpopulation. Median coverage is 34. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 8 AR,AD gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_007254.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PNKP	NM_007254.4	MANE Select	c.58C>T	p.Pro20Ser	missense	Exon 2 of 17	NP_009185.2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
PNKP	ENST00000322344.8	TSL:1 MANE Select	c.58C>T	p.Pro20Ser	missense	Exon 2 of 17	ENSP00000323511.2	Q96T60-1
PNKP	ENST00000596014.5	TSL:1	c.58C>T	p.Pro20Ser	missense	Exon 1 of 16	ENSP00000472300.1	Q96T60-1
PNKP	ENST00000593946.5	TSL:1	n.58C>T		non_coding_transcript_exon	Exon 1 of 16	ENSP00000468896.1	M0QX49

Frequencies

GnomAD3 genomes

AF:

0.00915

AC:

1393

AN:

152226

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0108

Gnomad AMI

AF:

0.0417

Gnomad AMR

AF:

0.0109

Gnomad ASJ

AF:

0.0121

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000827

Gnomad FIN

AF:

0.000942

Gnomad MID

AF:

0.0411

Gnomad NFE

AF:

0.00951

Gnomad OTH

AF:

0.0115

GnomAD2 exomes

AF:

0.00694

AC:

1681

AN:

242362

AF XY:

0.00660

show subpopulations

Gnomad AFR exome

AF:

0.0111

Gnomad AMR exome

AF:

0.00706

Gnomad ASJ exome

AF:

0.00967

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00187

Gnomad NFE exome

AF:

0.00954

Gnomad OTH exome

AF:

0.0124

GnomAD4 exome

AF:

0.00889

AC:

12978

AN:

1459952

Hom.:

Cov.:

AF XY:

0.00869

AC XY:

6313

AN XY:

726334

show subpopulations

African (AFR)

AF:

0.0122

AC:

407

AN:

33458

American (AMR)

AF:

0.00722

AC:

323

AN:

44706

Ashkenazi Jewish (ASJ)

AF:

0.0103

AC:

268

AN:

26122

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39692

South Asian (SAS)

AF:

0.00151

AC:

130

AN:

86244

European-Finnish (FIN)

AF:

0.00211

AC:

110

AN:

52256

Middle Eastern (MID)

AF:

0.0141

AC:

AN:

5750

European-Non Finnish (NFE)

AF:

0.00992

AC:

11028

AN:

1111408

Other (OTH)

AF:

0.0104

AC:

630

AN:

60316

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.481

Heterozygous variant carriers

676

1353

2029

2706

3382

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

416

832

1248

1664

2080

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00914

AC:

1392

AN:

152344

Hom.:

Cov.:

AF XY:

0.00816

AC XY:

608

AN XY:

74494

show subpopulations

African (AFR)

AF:

0.0108

AC:

451

AN:

41590

American (AMR)

AF:

0.0108

AC:

166

AN:

15306

Ashkenazi Jewish (ASJ)

AF:

0.0121

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5176

South Asian (SAS)

AF:

0.000827

AC:

AN:

4834

European-Finnish (FIN)

AF:

0.000942

AC:

AN:

10618

Middle Eastern (MID)

AF:

0.0340

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00951

AC:

647

AN:

68026

Other (OTH)

AF:

0.0113

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.504

Heterozygous variant carriers

143

214

286

357

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

100

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00696

Hom.:

Bravo

AF:

0.0102

ESP6500AA

AF:

0.0115

AC:

ESP6500EA

AF:

0.00775

AC:

ExAC

AF:

0.00745

AC:

897

EpiCase

AF:

0.00938

EpiControl

AF:

0.0104

ClinVar

ClinVar submissions

Significance:Benign/Likely benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (4)

not specified (4)

Microcephaly, seizures, and developmental delay (3)

Developmental and epileptic encephalopathy, 12 (1)

Inborn genetic diseases (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.080

BayesDel_addAF

Benign

-0.38

BayesDel_noAF

Benign

-0.31

CADD

Benign

(source)

DANN

Benign

0.94

DEOGEN2

Benign

0.024

Eigen

Benign

-0.37

Eigen_PC

Benign

-0.33

FATHMM_MKL

Uncertain

0.79

LIST_S2

Benign

0.81

MetaRNN

Benign

0.0083

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.4

PhyloP100

2.4

PrimateAI

Uncertain

0.56

PROVEAN

Benign

-0.96

REVEL

Benign

0.035

Sift

Benign

0.12

Sift4G

Benign

0.20

Polyphen

0.44

Vest4

0.40

MVP

0.88

MPC

0.093

ClinPred

0.040

GERP RS

4.5

PromoterAI

-0.034

Neutral

(source)

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.15

gMVP

0.26

Mutation Taster

=98/2

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over