rs768567927

Variant names:

Your query was ambiguous. Multiple possible variants found:

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_007254.4(PNKP):c.1003G>T(p.Gly335Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000577 in 1,559,340 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict 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. G335S) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000050 ( 0 hom. )

Consequence

PNKP
NM_007254.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: -1.80

Publications

2 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: Orphanet, G2P, Laboratory for Molecular Medicine
microcephaly, seizures, and developmental delay
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: ClinGen, Ambry Genetics, Labcorp Genetics (formerly Invitae)
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: Likely_benign. The variant received -2 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.23966259).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PNKP	NM_007254.4 link	c.1003G>T	p.Gly335Cys	missense_variant	Exon 11 of 17	ENST00000322344.8	NP_009185.2	Q96T60-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PNKP	ENST00000322344.8 link	c.1003G>T	p.Gly335Cys	missense_variant	Exon 11 of 17	1	NM_007254.4	ENSP00000323511.2		Q96T60-1

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152098

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.00

AC:

AN:

166114

AF XY:

0.00

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

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:

0.00000497

AC:

AN:

1407128

Hom.:

Cov.:

AF XY:

0.00000864

AC XY:

AN XY:

694824

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

32118

American (AMR)

AF:

0.00

AC:

AN:

36710

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25242

East Asian (EAS)

AF:

0.00

AC:

AN:

36550

South Asian (SAS)

AF:

0.00

AC:

AN:

79874

European-Finnish (FIN)

AF:

0.00

AC:

AN:

49526

Middle Eastern (MID)

AF:

0.000186

AC:

AN:

5372

European-Non Finnish (NFE)

AF:

0.00000185

AC:

AN:

1083442

Other (OTH)

AF:

0.0000686

AC:

AN:

58294

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.404

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152212

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74422

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41536

American (AMR)

AF:

0.00

AC:

AN:

15298

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5182

South Asian (SAS)

AF:

0.000207

AC:

AN:

4820

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10616

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

67972

Other (OTH)

AF:

0.00

AC:

AN:

2110

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.500

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.0000149

Hom.:

Bravo

AF:

0.00000378

ExAC

AF:

0.00000866

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Jul 17, 2013

GeneDx

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

p.Gly335Cys (GGC>TGC): c.1003 G>T in exon 11 of the PNKP gene (NM_007254.2) The Gly335Cys missense change has not been published as a mutation, nor has it been reported as a benign polymorphism to our knowledge. It was not observed in approximately 6,400 individuals of European and African American ancestry in the NHLBI Exome Sequencing Project, indicating it is not a common benign variant in these populations. The amino acid substitution is non-conservative, as a non-polar Glycine residue is replaced by a polar Cysteine residue, and the gain of a Cysteine may affect disulfide bond formation in the protein. However, it alters a poorly conserved position in the protein, and multiple in silico algorithms predict it may be benign. Therefore, based on the currently available information, it is unclear whether Gly335Cys is a disease-causing mutation or a rare benign variant.The variant is found in EPILEPSY panel(s). -

Microcephaly, seizures, and developmental delay;C4225397:Ataxia - oculomotor apraxia type 4

Uncertain:1

Oct 31, 2018

Fulgent Genetics, Fulgent Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.093

BayesDel_addAF

Benign

-0.16

BayesDel_noAF

Benign

-0.47

CADD

Benign

1.6

(source)

DANN

Benign

0.97

DEOGEN2

Benign

0.029

T;T;T;T

Eigen

Benign

-1.4

Eigen_PC

Benign

-1.6

FATHMM_MKL

Benign

0.084

LIST_S2

Benign

0.77

T;.;T;T

M_CAP

Pathogenic

0.44

MetaRNN

Benign

0.24

T;T;T;T

MetaSVM

Benign

-0.74

MutationAssessor

Benign

0.69

.;N;.;N

PhyloP100

-1.8

PrimateAI

Uncertain

0.62

PROVEAN

Benign

-1.1

.;N;.;.

REVEL

Benign

0.18

Sift

Benign

0.050

.;D;.;.

Sift4G

Uncertain

0.049

D;D;D;D

Polyphen

0.76

.;P;.;P

Vest4

0.30

MutPred

0.38

Loss of ubiquitination at K330 (P = 0.0962);Loss of ubiquitination at K330 (P = 0.0962);.;Loss of ubiquitination at K330 (P = 0.0962);

MVP

0.42

MPC

0.26

ClinPred

0.39

GERP RS

-10

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.059

gMVP

0.53

Mutation Taster

=96/4

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

rs768567927

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over