rs978778913

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_007254.4(PNKP):​c.995C>T​(p.Pro332Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000141 in 1,413,826 control chromosomes in the GnomAD database, with no homozygous occurrence. 13/22 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. P332S) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

PNKP
NM_007254.4 missense

Scores

1
6
12

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.56

Publications

0 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

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2
Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
PNKPNM_007254.4 linkc.995C>T p.Pro332Leu 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
PNKPENST00000322344.8 linkc.995C>T p.Pro332Leu missense_variant Exon 11 of 17 1 NM_007254.4 ENSP00000323511.2 Q96T60-1

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD2 exomes
AF:
0.00000569
AC:
1
AN:
175708
AF XY:
0.0000106
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.0000759
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000141
AC:
2
AN:
1413826
Hom.:
0
Cov.:
37
AF XY:
0.00000143
AC XY:
1
AN XY:
698840
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
32368
American (AMR)
AF:
0.00
AC:
0
AN:
37548
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
25300
East Asian (EAS)
AF:
0.0000270
AC:
1
AN:
37056
South Asian (SAS)
AF:
0.00
AC:
0
AN:
80448
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
49818
Middle Eastern (MID)
AF:
0.000180
AC:
1
AN:
5564
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
1087194
Other (OTH)
AF:
0.00
AC:
0
AN:
58530
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.425
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<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
Cov.:
32

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

not specified Uncertain:1
May 09, 2016
Genetic Services Laboratory, University of Chicago
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
0.13
BayesDel_addAF
Benign
-0.038
T
BayesDel_noAF
Benign
-0.29
CADD
Benign
23
DANN
Benign
0.95
DEOGEN2
Benign
0.090
T;T;T;T
Eigen
Benign
-0.099
Eigen_PC
Benign
-0.021
FATHMM_MKL
Uncertain
0.82
D
LIST_S2
Uncertain
0.94
D;.;D;D
M_CAP
Pathogenic
0.69
D
MetaRNN
Uncertain
0.46
T;T;T;T
MetaSVM
Benign
-0.80
T
MutationAssessor
Uncertain
2.3
.;M;.;M
PhyloP100
1.6
PrimateAI
Uncertain
0.71
T
PROVEAN
Benign
-2.3
.;N;.;.
REVEL
Benign
0.12
Sift
Benign
0.035
.;D;.;.
Sift4G
Uncertain
0.042
D;T;T;T
Polyphen
0.24
.;B;.;B
Vest4
0.46
MutPred
0.44
Loss of disorder (P = 0.0674);Loss of disorder (P = 0.0674);.;Loss of disorder (P = 0.0674);
MVP
0.69
MPC
0.10
ClinPred
0.18
T
GERP RS
4.0
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7
Varity_R
0.11
gMVP
0.66
Mutation Taster
=86/14
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

Publications

Other links and lift over

dbSNP: rs978778913; hg19: chr19-50365662; API