16-51635-C-G

Variant names:

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM2PM5PP2PP3

The NM_016310.5(POLR3K):c.122G>C(p.Arg41Pro) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,518 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R41W) has been classified as Pathogenic.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

POLR3K
NM_016310.5 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 5.39

Publications

0 publications found

Variant links:

Genes affected

POLR3K (HGNC:14121): (RNA polymerase III subunit K) This gene encodes a small essential subunit of RNA polymerase III, the polymerase responsible for synthesizing transfer and small ribosomal RNAs in eukaryotes. The carboxy-terminal domain of this subunit shares a high degree of sequence similarity to the carboxy-terminal domain of an RNA polymerase II elongation factor. This similarity in sequence is supported by functional studies showing that this subunit is required for proper pausing and termination during transcription. Pseudogenes of this gene are found on chromosomes 13 and 17.[provided by RefSeq, Jul 2010]

POLR3K Gene-Disease associations (from GenCC):

leukodystrophy, hypomyelinating, 21
Inheritance: AR, Unknown Classification: LIMITED Submitted by: Ambry Genetics, ClinGen, Labcorp Genetics (formerly Invitae)

POLR3K links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PM5

Other missense variant is known to change same aminoacid residue: Variant chr16-51636-G-A is described in ClinVar as Pathogenic. ClinVar VariationId is 1065610.Status of the report is no_assertion_criteria_provided, 0 stars.

PP2

Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 2 curated pathogenic missense variants (we use a threshold of 10). The gene has 0 curated benign missense variants. Gene score misZ: -0.088583 (below the threshold of 3.09). Trascript score misZ: 0.18956 (below the threshold of 3.09). GenCC associations: The gene is linked to leukodystrophy, hypomyelinating, 21.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.791

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_016310.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	POLR3K	NM_016310.5	MANE Select	c.122G>C	p.Arg41Pro	missense	Exon 2 of 3	NP_057394.3	Q9Y2Y1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
POLR3K	ENST00000293860.6	TSL:1 MANE Select	c.122G>C	p.Arg41Pro	missense	Exon 2 of 3	ENSP00000293860.5	Q9Y2Y1
POLR3K	ENST00000913642.1		c.111+1841G>C		intron	N/A	ENSP00000583701.1
POLR3K	ENST00000481810.1	TSL:2	n.508G>C		non_coding_transcript_exon	Exon 1 of 2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000398

AC:

AN:

251344

AF XY:

0.00000736

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:

0.00000880

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461518

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727082

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33474

American (AMR)

AF:

0.00

AC:

AN:

44716

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26132

East Asian (EAS)

AF:

0.00

AC:

AN:

39686

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53398

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

9.00e-7

AC:

AN:

1111708

Other (OTH)

AF:

0.00

AC:

AN:

60380

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ExAC

AF:

0.00000824

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.91

BayesDel_addAF

Pathogenic

0.24

BayesDel_noAF

Uncertain

0.11

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

Eigen

Pathogenic

0.81

Eigen_PC

Pathogenic

0.78

FATHMM_MKL

Uncertain

0.95

M_CAP

Benign

0.033

MetaRNN

Pathogenic

0.79

MetaSVM

Benign

-0.30

PhyloP100

5.4

PrimateAI

Uncertain

0.78

PROVEAN

Pathogenic

-4.9

REVEL

Uncertain

0.50

Sift

Uncertain

0.023

Sift4G

Uncertain

0.037

Vest4

0.86

MutPred

0.56

Loss of MoRF binding (P = 0.0026)

MVP

0.72

MPC

0.58

ClinPred

0.98

GERP RS

5.3

gMVP

0.82

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

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

ClinVar

Computational scores

Splicing

Publications

Other links and lift over