Variant 20-18472870-C-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_006466.4(POLR3F):c.209C>T(p.Thr70Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000159 in 1,509,198 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 (★).

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000015 ( 0 hom. )

Consequence

POLR3F
NM_006466.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.69

Variant links:

Genes affected

POLR3F (HGNC:15763): (RNA polymerase III subunit F) The protein encoded by this gene is one of more than a dozen subunits forming eukaryotic RNA polymerase III (RNA Pol III), which transcribes 5S ribosomal RNA and tRNA genes. This protein has been shown to bind both TFIIIB90 and TBP, two subunits of RNA polymerase III transcription initiation factor IIIB (TFIIIB). Unlike most of the other RNA Pol III subunits, the encoded protein is unique to this polymerase. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Sep 2013]

POLR3F links:

POLR3F (HGNC:):

POLR3F links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -6 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.233102).

BS2

High AC in GnomAdExome4 at 21 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
POLR3F	NM_006466.4 linkuse as main transcript	c.209C>T	p.Thr70Met	missense_variant	3/9	ENST00000377603.5	NP_006457.2	Q9H1D9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
POLR3F	ENST00000377603.5 linkuse as main transcript	c.209C>T	p.Thr70Met	missense_variant	3/9	1	NM_006466.4	ENSP00000366828.4		Q9H1D9

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

151974

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:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000345

AC:

AN:

231782

Hom.:

AF XY:

0.0000555

AC XY:

AN XY:

126142

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:

0.000108

Gnomad FIN exome

AF:

0.0000938

Gnomad NFE exome

AF:

0.0000280

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000155

AC:

AN:

1357224

Hom.:

Cov.:

AF XY:

0.0000191

AC XY:

AN XY:

679076

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000268

Gnomad4 SAS exome

AF:

0.0000760

Gnomad4 FIN exome

AF:

0.0000957

Gnomad4 NFE exome

AF:

0.00000582

Gnomad4 OTH exome

AF:

0.0000534

GnomAD4 genome

AF:

0.0000197

AC:

AN:

151974

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74244

show subpopulations

Gnomad4 AFR

AF:

0.00

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:

0.0000441

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000756

ExAC

AF:

0.0000330

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jul 26, 2023

In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Experimental studies and prediction algorithms are not available or were not evaluated, and the functional significance of this variant is currently unknown. This sequence change replaces threonine, which is neutral and polar, with methionine, which is neutral and non-polar, at codon 29 of the POLR3F protein (p.Thr29Met). This variant is present in population databases (rs748937304, gnomAD 0.01%). This variant has not been reported in the literature in individuals affected with POLR3F-related conditions. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.10

BayesDel_addAF

Benign

-0.26

BayesDel_noAF

Benign

-0.39

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.081

Eigen

Uncertain

0.30

Eigen_PC

Uncertain

0.42

FATHMM_MKL

Uncertain

0.95

LIST_S2

Uncertain

0.94

M_CAP

Benign

0.0038

MetaRNN

Benign

0.23

MetaSVM

Benign

-0.80

MutationAssessor

Benign

0.81

PrimateAI

Uncertain

0.60

PROVEAN

Benign

-2.0

REVEL

Benign

0.042

Sift

Benign

0.087

Sift4G

Benign

0.070

Polyphen

0.68

Vest4

0.26

MutPred

0.32

Gain of MoRF binding (P = 0.0648);

MVP

0.72

MPC

1.2

ClinPred

0.14

GERP RS

5.9

Varity_R

0.068

gMVP

0.29

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