rs376854895

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 1P and 1B. PP5BP4

The NM_007254.4(PNKP):​c.1385G>C​(p.Arg462Pro) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000404 in 1,558,160 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 2/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R462Q) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000041 ( 0 hom. )

Consequence

PNKP
NM_007254.4 missense, splice_region

Scores

2
13
3
Splicing: ADA: 0.9561
1
1

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:3U:2O:1

Conservation

PhyloP100: 1.82

Publications

6 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

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PP5
Variant 19-49861609-C-G is Pathogenic according to our data. Variant chr19-49861609-C-G is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 206414.
BP4
Computational evidence support a benign effect (MetaRNN=0.18138063). . Strength limited to SUPPORTING due to the PP5.

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.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
PNKP
NM_007254.4
MANE Select
c.1385G>Cp.Arg462Pro
missense splice_region
Exon 15 of 17NP_009185.2

Ensembl Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
PNKP
ENST00000322344.8
TSL:1 MANE Select
c.1385G>Cp.Arg462Pro
missense splice_region
Exon 15 of 17ENSP00000323511.2Q96T60-1
PNKP
ENST00000596014.5
TSL:1
c.1385G>Cp.Arg462Pro
missense splice_region
Exon 14 of 16ENSP00000472300.1Q96T60-1
PNKP
ENST00000593946.5
TSL:1
n.*1312G>C
splice_region non_coding_transcript_exon
Exon 14 of 16ENSP00000468896.1M0QX49

Frequencies

GnomAD3 genomes
AF:
0.0000395
AC:
6
AN:
151974
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.0000655
Gnomad ASJ
AF:
0.000864
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000294
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.000149
AC:
24
AN:
161108
AF XY:
0.000126
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.0000789
Gnomad ASJ exome
AF:
0.00237
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000315
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000405
AC:
57
AN:
1406186
Hom.:
0
Cov.:
38
AF XY:
0.0000374
AC XY:
26
AN XY:
694576
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
32108
American (AMR)
AF:
0.0000548
AC:
2
AN:
36472
Ashkenazi Jewish (ASJ)
AF:
0.00186
AC:
47
AN:
25222
East Asian (EAS)
AF:
0.00
AC:
0
AN:
36468
South Asian (SAS)
AF:
0.00
AC:
0
AN:
80318
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
48270
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
4952
European-Non Finnish (NFE)
AF:
0.00000553
AC:
6
AN:
1084100
Other (OTH)
AF:
0.0000343
AC:
2
AN:
58276
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.493
Heterozygous variant carriers
0
6
11
17
22
28
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
AF:
0.0000395
AC:
6
AN:
151974
Hom.:
0
Cov.:
32
AF XY:
0.0000269
AC XY:
2
AN XY:
74234
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
41364
American (AMR)
AF:
0.0000655
AC:
1
AN:
15260
Ashkenazi Jewish (ASJ)
AF:
0.000864
AC:
3
AN:
3472
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5152
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4820
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10614
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
314
European-Non Finnish (NFE)
AF:
0.0000294
AC:
2
AN:
67974
Other (OTH)
AF:
0.00
AC:
0
AN:
2092
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.542
Heterozygous variant carriers
0
1
1
2
2
3
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome 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
Alfa
AF:
0.0000188
Hom.:
0
Bravo
AF:
0.0000453
ExAC
AF:
0.0000352
AC:
4

ClinVar

ClinVar submissions
Significance:Conflicting classifications of pathogenicity
Revision:criteria provided, conflicting classifications
View on ClinVar
Pathogenic
VUS
Benign
Condition
1
1
-
not provided (2)
1
-
-
Developmental and epileptic encephalopathy, 12 (1)
1
-
-
Inborn genetic diseases (1)
-
1
-
Microcephaly, seizures, and developmental delay (2)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.97
BayesDel_addAF
Uncertain
0.075
D
BayesDel_noAF
Uncertain
0.060
CADD
Pathogenic
29
DANN
Uncertain
1.0
DEOGEN2
Uncertain
0.54
D
Eigen
Uncertain
0.61
Eigen_PC
Uncertain
0.55
FATHMM_MKL
Uncertain
0.95
D
LIST_S2
Benign
0.72
T
M_CAP
Pathogenic
0.49
D
MetaRNN
Benign
0.18
T
MetaSVM
Benign
-0.71
T
MutationAssessor
Uncertain
2.6
M
PhyloP100
1.8
PrimateAI
Uncertain
0.59
T
PROVEAN
Uncertain
-3.4
D
REVEL
Uncertain
0.36
Sift
Uncertain
0.013
D
Sift4G
Uncertain
0.060
T
Polyphen
1.0
D
Vest4
0.95
MVP
0.76
MPC
0.57
ClinPred
0.59
D
GERP RS
4.0
PromoterAI
-0.036
Neutral
Varity_R
0.96
gMVP
0.85
Mutation Taster
=39/61
disease causing (ClinVar)

Splicing

Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Benign
0.96
dbscSNV1_RF
Pathogenic
0.90
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: rs376854895; hg19: chr19-50364866; API