Genetic Variant PARP1:p.Thr982Ser (chr1-226361987-G-C) – ACMG Classification: Likely_benign (-4 pts)

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2

The NM_001618.4(PARP1):c.2945C>G(p.Thr982Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000418 in 1,436,182 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000042 ( 0 hom. )

Consequence

PARP1
NM_001618.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 9.99

Variant links:

Genes affected

PARP1 (HGNC:270): (poly(ADP-ribose) polymerase 1) This gene encodes a chromatin-associated enzyme, poly(ADP-ribosyl)transferase, which modifies various nuclear proteins by poly(ADP-ribosyl)ation. The modification is dependent on DNA and is involved in the regulation of various important cellular processes such as differentiation, proliferation, and tumor transformation and also in the regulation of the molecular events involved in the recovery of cell from DNA damage. In addition, this enzyme may be the site of mutation in Fanconi anemia, and may participate in the pathophysiology of type I diabetes. [provided by RefSeq, Jul 2008]

PARP1 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

BS2

High AC in GnomAdExome4 at 6 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PARP1	NM_001618.4 link	c.2945C>G	p.Thr982Ser	missense_variant	Exon 22 of 23	ENST00000366794.10	NP_001609.2	P09874A0A024R3T8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PARP1	ENST00000366794.10 link	c.2945C>G	p.Thr982Ser	missense_variant	Exon 22 of 23	1	NM_001618.4	ENSP00000355759.5		P09874

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000398

AC:

AN:

251416

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135876

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 SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000418

AC:

AN:

1436182

Hom.:

Cov.:

AF XY:

0.00000558

AC XY:

AN XY:

716298

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000253

Gnomad4 SAS exome

AF:

0.0000350

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000336

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

May 23, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.2945C>G (p.T982S) alteration is located in exon 22 (coding exon 22) of the PARP1 gene. This alteration results from a C to G substitution at nucleotide position 2945, causing the threonine (T) at amino acid position 982 to be replaced by a serine (S). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.17

BayesDel_addAF

Benign

-0.080

BayesDel_noAF

Benign

-0.26

CADD

Benign

DANN

Benign

0.52

DEOGEN2

Benign

0.046

Eigen

Benign

-0.20

Eigen_PC

Benign

0.091

FATHMM_MKL

Pathogenic

1.0

LIST_S2

Uncertain

0.91

M_CAP

Benign

0.033

MetaRNN

Uncertain

0.48

MetaSVM

Benign

-1.0

MutationAssessor

Benign

-0.41

PrimateAI

Uncertain

0.54

PROVEAN

Benign

-0.51

REVEL

Uncertain

0.30

Sift

Benign

0.69

Sift4G

Benign

1.0

Polyphen

0.011

Vest4

0.69

MutPred

0.55

Gain of disorder (P = 0.0266);

MVP

0.65

MPC

0.21

ClinPred

0.50

GERP RS

6.2

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.58

gMVP

0.66

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over