Genetic Variant PNKD:p.Gln48* (chr2-218323409-C-T) – ACMG Classification: Likely_benign (-4 pts)

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BS2

The ENST00000258362.7(PNKD):c.142C>T(p.Gln48*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000559 in 1,573,638 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: 𝑓 0.000059 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000056 ( 0 hom. )

Consequence

PNKD
ENST00000258362.7 stop_gained

Scores

Clinical Significance

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

Conservation

PhyloP100: 0.895

Publications

1 publications found

Variant links:

Genes affected

PNKD (HGNC:9153): (PNKD metallo-beta-lactamase domain containing) This gene is thought to play a role in the regulation of myofibrillogenesis. Mutations in this gene have been associated with the movement disorder paroxysmal non-kinesigenic dyskinesia. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Mar 2010]

PNKD Gene-Disease associations (from GenCC):

paroxysmal nonkinesigenic dyskinesia 1
Inheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: Genomics England PanelApp, Orphanet
Tourette syndrome
Inheritance: AD Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)

PNKD links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -4 ACMG points.

BS2

High AC in GnomAd4 at 9 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PNKD	NM_015488.5 link	c.237-16374C>T		intron_variant	Intron 2 of 9	ENST00000273077.9	NP_056303.3	Q8N490-1A0A024R415
PNKD	NM_022572.4 link	c.142C>T	p.Gln48*	stop_gained	Exon 1 of 9		NP_072094.1	Q8N490-3
PNKD	XM_017003772.2 link	c.142C>T	p.Gln48*	stop_gained	Exon 1 of 8		XP_016859261.1
PNKD	XM_017003771.2 link	c.237-16374C>T		intron_variant	Intron 2 of 8		XP_016859260.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PNKD	ENST00000273077.9 link	c.237-16374C>T		intron_variant	Intron 2 of 9	1	NM_015488.5	ENSP00000273077.4		Q8N490-1

Frequencies

GnomAD3 genomes

AF:

0.0000592

AC:

AN:

151960

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:

0.000621

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000883

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000818

AC:

AN:

183456

AF XY:

0.000117

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000744

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000556

AC:

AN:

1421570

Hom.:

Cov.:

AF XY:

0.0000652

AC XY:

AN XY:

705988

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

31756

American (AMR)

AF:

0.00

AC:

AN:

41942

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25214

East Asian (EAS)

AF:

0.00

AC:

AN:

36948

South Asian (SAS)

AF:

0.000230

AC:

AN:

82712

European-Finnish (FIN)

AF:

0.00

AC:

AN:

38954

Middle Eastern (MID)

AF:

0.000876

AC:

AN:

5708

European-Non Finnish (NFE)

AF:

0.0000437

AC:

AN:

1099324

Other (OTH)

AF:

0.000119

AC:

AN:

59012

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.501

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<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:

0.0000592

AC:

AN:

152068

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74352

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41486

American (AMR)

AF:

0.00

AC:

AN:

15284

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5120

South Asian (SAS)

AF:

0.000622

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10592

Middle Eastern (MID)

AF:

0.00

AC:

AN:

292

European-Non Finnish (NFE)

AF:

0.0000883

AC:

AN:

67976

Other (OTH)

AF:

0.00

AC:

AN:

2110

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.536

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<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:

0.0000435

Hom.:

Bravo

AF:

0.0000302

ExAC

AF:

0.0000768

AC:

Asia WGS

AF:

0.000868

AC:

AN:

3470

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Paroxysmal nonkinesigenic dyskinesia 1

Uncertain:1

Dec 18, 2017

Genomic Research Center, Shahid Beheshti University of Medical Sciences

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not provided

Uncertain:1

Jun 01, 2018

CeGaT Center for Human Genetics Tuebingen

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Benign

-0.29

BayesDel_noAF

Benign

-0.34

CADD

Benign

(source)

DANN

Uncertain

1.0

Eigen

Benign

-0.24

Eigen_PC

Benign

-0.22

FATHMM_MKL

Benign

0.49

PhyloP100

0.90

Vest4

0.50

GERP RS

0.79

PromoterAI

-0.0014

Neutral

(source)

Mutation Taster

=27/173

disease causing (fs/PTC)

(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

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over