Genetic Variant PARP4:p.Thr1629Ala (chr13-24426560-T-C) – ACMG Classification: Uncertain_significance (3 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2PP3

The NM_006437.4(PARP4):c.4885A>G(p.Thr1629Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,460,342 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T1629S) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 31)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

PARP4
NM_006437.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 2.00

Publications

0 publications found

Variant links:

Genes affected

PARP4 (HGNC:271): (poly(ADP-ribose) polymerase family member 4) This gene encodes poly(ADP-ribosyl)transferase-like 1 protein, which is capable of catalyzing a poly(ADP-ribosyl)ation reaction. This protein has a catalytic domain which is homologous to that of poly (ADP-ribosyl) transferase, but lacks an N-terminal DNA binding domain which activates the C-terminal catalytic domain of poly (ADP-ribosyl) transferase. Since this protein is not capable of binding DNA directly, its transferase activity may be activated by other factors such as protein-protein interaction mediated by the extensive carboxyl terminus. [provided by RefSeq, Jul 2008]

PARP4 links:

TPTE2P6 (HGNC:42644): (TPTE2 pseudogene 6)

TPTE2P6 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.806

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_006437.4. 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
	PARP4	NM_006437.4	MANE Select	c.4885A>G	p.Thr1629Ala	missense	Exon 33 of 34	NP_006428.2	Q9UKK3

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
PARP4	ENST00000381989.4	TSL:1 MANE Select	c.4885A>G	p.Thr1629Ala	missense	Exon 33 of 34	ENSP00000371419.3	Q9UKK3
PARP4	ENST00000908086.1		c.4885A>G	p.Thr1629Ala	missense	Exon 34 of 35	ENSP00000578145.1
PARP4	ENST00000934618.1		c.4885A>G	p.Thr1629Ala	missense	Exon 34 of 35	ENSP00000604677.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000398

AC:

AN:

251414

AF XY:

0.00

show subpopulations

Gnomad AFR exome

AF:

0.0000615

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:

6.85e-7

AC:

AN:

1460342

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

726624

show subpopulations

African (AFR)

AF:

0.0000299

AC:

AN:

33444

American (AMR)

AF:

0.00

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26128

East Asian (EAS)

AF:

0.00

AC:

AN:

39678

South Asian (SAS)

AF:

0.00

AC:

AN:

86196

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53418

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5318

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111118

Other (OTH)

AF:

0.00

AC:

AN:

60320

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

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

Cov.:

Alfa

AF:

0.00

Hom.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.55

BayesDel_addAF

Pathogenic

0.18

BayesDel_noAF

Pathogenic

0.21

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.26

Eigen

Uncertain

0.48

Eigen_PC

Uncertain

0.41

FATHMM_MKL

Uncertain

0.89

LIST_S2

Benign

0.71

M_CAP

Benign

0.011

MetaRNN

Pathogenic

0.81

MetaSVM

Pathogenic

0.88

MutationAssessor

Uncertain

2.8

PhyloP100

2.0

PrimateAI

Benign

0.48

PROVEAN

Uncertain

-2.9

REVEL

Pathogenic

0.72

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0

Polyphen

1.0

Vest4

0.76

MutPred

0.54

Gain of catalytic residue at T1629 (P = 0.0215)

MVP

0.97

MPC

0.55

ClinPred

0.99

GERP RS

4.2

Varity_R

0.57

gMVP

0.65

Mutation Taster

=74/26

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.080

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

ClinVar

Computational scores

Splicing

Publications

Other links and lift over