dbSNP rs140460455: POLA2:p.Ser71Gly (chr11-65267483-A-G) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_002689.4(POLA2):c.211A>G(p.Ser71Gly) variant causes a missense change. The variant allele was found at a frequency of 0.0000915 in 1,605,976 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00045 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000054 ( 0 hom. )

Consequence

POLA2
NM_002689.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.50

Variant links:

Genes affected

POLA2 (HGNC:30073): (DNA polymerase alpha 2, accessory subunit) Predicted to enable DNA binding activity. Involved in DNA replication, synthesis of RNA primer. Located in cytosol and nucleoplasm. Part of alpha DNA polymerase:primase complex. [provided by Alliance of Genome Resources, Apr 2022]

POLA2 links:

ENSG00000285816 (HGNC:):

ENSG00000285816 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.034621984).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
POLA2	NM_002689.4 link	c.211A>G	p.Ser71Gly	missense_variant	Exon 3 of 18	ENST00000265465.8	NP_002680.2	Q14181-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
POLA2	ENST00000265465.8 link	c.211A>G	p.Ser71Gly	missense_variant	Exon 3 of 18	1	NM_002689.4	ENSP00000265465.3		Q14181-1
ENSG00000285816	ENST00000649896.1 link	n.211A>G		non_coding_transcript_exon_variant	Exon 3 of 20			ENSP00000498025.1		A0A3B3ITS5

Frequencies

GnomAD3 genomes

AF:

0.000434

AC:

AN:

152136

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00157

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.000479

GnomAD3 exomes

AF:

0.000133

AC:

AN:

247352

Hom.:

AF XY:

0.000135

AC XY:

AN XY:

133796

show subpopulations

Gnomad AFR exome

AF:

0.00174

Gnomad AMR exome

AF:

0.0000602

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000177

Gnomad OTH exome

AF:

0.000166

GnomAD4 exome

AF:

0.0000543

AC:

AN:

1453722

Hom.:

Cov.:

AF XY:

0.0000580

AC XY:

AN XY:

723574

show subpopulations

Gnomad4 AFR exome

AF:

0.00196

Gnomad4 AMR exome

AF:

0.0000915

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000234

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

9.03e-7

Gnomad4 OTH exome

AF:

0.000117

GnomAD4 genome

AF:

0.000447

AC:

AN:

152254

Hom.:

Cov.:

AF XY:

0.000484

AC XY:

AN XY:

74442

show subpopulations

Gnomad4 AFR

AF:

0.00161

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.000474

Alfa

AF:

0.0000970

Hom.:

Bravo

AF:

0.000427

ESP6500AA

AF:

0.00114

AC:

ESP6500EA

AF:

0.000233

AC:

ExAC

AF:

0.000132

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Dec 02, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.211A>G (p.S71G) alteration is located in exon 3 (coding exon 3) of the POLA2 gene. This alteration results from a A to G substitution at nucleotide position 211, causing the serine (S) at amino acid position 71 to be replaced by a glycine (G). 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

0.062

BayesDel_addAF

Benign

-0.48

BayesDel_noAF

Benign

-0.47

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.29

T;T

Eigen

Benign

0.0073

Eigen_PC

Benign

0.14

FATHMM_MKL

Uncertain

0.95

LIST_S2

Benign

0.77

T;T

M_CAP

Benign

0.013

MetaRNN

Benign

0.035

T;T

MetaSVM

Benign

-1.1

MutationAssessor

Uncertain

2.0

M;.

PrimateAI

Benign

0.36

PROVEAN

Benign

-1.3

N;N

REVEL

Benign

0.11

Sift

Benign

0.056

T;T

Sift4G

Benign

0.097

T;T

Polyphen

0.24

B;B

Vest4

0.18

MVP

0.21

MPC

0.24

ClinPred

0.031

GERP RS

5.6

Varity_R

0.17

gMVP

0.088

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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