Genetic Variant POLR3G:p.Arg9Cys (chr5-90485592-C-T) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_006467.3(POLR3G):c.25C>T(p.Arg9Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000316 in 1,613,272 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00012 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000023 ( 0 hom. )

Consequence

POLR3G
NM_006467.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.85

Variant links:

Genes affected

POLR3G (HGNC:30075): (RNA polymerase III subunit G) Enables chromatin binding activity. Involved in positive regulation of innate immune response; positive regulation of interferon-beta production; and transcription by RNA polymerase III. Acts upstream of or within cell population proliferation. Located in cytosol and nuclear body. Part of RNA polymerase III complex. [provided by Alliance of Genome Resources, Apr 2022]

POLR3G links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
POLR3G	NM_006467.3 link	c.25C>T	p.Arg9Cys	missense_variant	Exon 2 of 8	ENST00000651687.1	NP_006458.2	O15318A0A024RAM1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
POLR3G	ENST00000651687.1 link	c.25C>T	p.Arg9Cys	missense_variant	Exon 2 of 8		NM_006467.3	ENSP00000498469.1		O15318

Frequencies

GnomAD3 genomes

AF:

0.000118

AC:

AN:

152138

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000411

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

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:

0.00

GnomAD3 exomes

AF:

0.0000201

AC:

AN:

249008

Hom.:

AF XY:

0.0000148

AC XY:

AN XY:

135096

show subpopulations

Gnomad AFR exome

AF:

0.000323

Gnomad AMR exome

AF:

0.00

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000226

AC:

AN:

1461134

Hom.:

Cov.:

AF XY:

0.0000193

AC XY:

AN XY:

726890

show subpopulations

Gnomad4 AFR exome

AF:

0.000658

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000450

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.000118

AC:

AN:

152138

Hom.:

Cov.:

AF XY:

0.000135

AC XY:

AN XY:

74336

show subpopulations

Gnomad4 AFR

AF:

0.000411

Gnomad4 AMR

AF:

0.0000655

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:

0.00

Bravo

AF:

0.000181

ESP6500AA

AF:

0.000800

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.00000828

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Aug 04, 2021

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.25C>T (p.R9C) alteration is located in exon 2 (coding exon 1) of the POLR3G gene. This alteration results from a C to T substitution at nucleotide position 25, causing the arginine (R) at amino acid position 9 to be replaced by a cysteine (C). 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

Uncertain

0.54

BayesDel_addAF

Uncertain

0.12

BayesDel_noAF

Pathogenic

0.24

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.44

.;T;T;T;D;D;.

Eigen

Uncertain

0.56

Eigen_PC

Uncertain

0.56

FATHMM_MKL

Uncertain

0.79

LIST_S2

Uncertain

0.96

D;D;D;D;D;.;D

M_CAP

Benign

0.0071

MetaRNN

Uncertain

0.63

D;D;D;D;D;D;D

MetaSVM

Benign

-0.46

MutationAssessor

Pathogenic

3.3

.;.;.;.;M;M;.

PrimateAI

Uncertain

0.66

PROVEAN

Pathogenic

-5.8

D;D;D;D;D;D;D

REVEL

Uncertain

0.30

Sift

Benign

0.19

T;T;T;T;T;T;T

Sift4G

Pathogenic

0.0

D;D;D;D;D;D;D

Polyphen

0.94

.;.;.;.;P;P;.

Vest4

0.67, 0.67, 0.68

MVP

0.60

MPC

0.34

ClinPred

0.93

GERP RS

5.4

Varity_R

0.22

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