Genetic Variant POLR3F:c.180+18A>G (chr20-18469079-A-G) – ACMG Classification: Likely_benign (-4 pts)

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 2P and 6B. PM2BP4_StrongBP6_Moderate

The NM_006466.4(POLR3F):c.180+18A>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000668 in 897,706 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 Likely benign (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000067 ( 0 hom. )

Consequence

POLR3F
NM_006466.4 intron

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: 1.77

Publications

0 publications found

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 Gene-Disease associations (from GenCC):

immunodeficiency 101 (varicella zoster virus-specific)
Inheritance: Unknown Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)

POLR3F links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.8).

BP6

Variant 20-18469079-A-G is Benign according to our data. Variant chr20-18469079-A-G is described in ClinVar as Likely_benign. ClinVar VariationId is 2878568.Status of the report is criteria_provided_single_submitter, 1 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_006466.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
POLR3F	NM_006466.4	MANE Select	c.180+18A>G	intron	N/A	NP_006457.2
POLR3F	NM_001282526.2		c.57+18A>G	intron	N/A	NP_001269455.1	Q05DB8
POLR3F	NM_001410821.1		c.180+18A>G	intron	N/A	NP_001397750.1	A0A8V8TMS0

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
POLR3F	ENST00000377603.5	TSL:1 MANE Select	c.180+18A>G	intron	N/A	ENSP00000366828.4	Q9H1D9
POLR3F	ENST00000462997.6	TSL:1	c.57+18A>G	intron	N/A	ENSP00000513375.1	Q05DB8
POLR3F	ENST00000697647.1		c.180+18A>G	intron	N/A	ENSP00000513371.1	A0A8V8TLI4

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.0000160

AC:

AN:

249818

AF XY:

0.0000222

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 FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000883

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000668

AC:

AN:

897706

Hom.:

Cov.:

AF XY:

0.0000106

AC XY:

AN XY:

470490

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

22676

American (AMR)

AF:

0.00

AC:

AN:

43670

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

22534

East Asian (EAS)

AF:

0.00

AC:

AN:

37140

South Asian (SAS)

AF:

0.0000668

AC:

AN:

74870

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53194

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4682

European-Non Finnish (NFE)

AF:

0.00000168

AC:

AN:

596994

Other (OTH)

AF:

0.00

AC:

AN:

41946

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.483

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.:

Bravo

AF:

0.00000378

ClinVar

ClinVar submissions

Significance:Likely benign

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.80

CADD

Benign

8.8

(source)

DANN

Benign

0.68

PhyloP100

1.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.0

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

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