Genetic Variant POLR3GL:c.326-1G>A (chr1-145977482-G-A) – ACMG Classification: Uncertain_significance (5 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PVS1_ModeratePM2PP5

The NM_032305.3(POLR3GL):c.326-1G>A variant causes a splice acceptor, intron change. The variant allele was found at a frequency of 0.00000616 in 1,461,740 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 2/2 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Likely pathogenic (no stars).

Frequency

Genomes: not found (cov: 31)

Exomes 𝑓: 0.0000062 ( 0 hom. )

Consequence

POLR3GL
NM_032305.3 splice_acceptor, intron

Scores

Splicing: ADA: 1.000

Clinical Significance

Pathogenic/Likely pathogenic no assertion criteria provided P:2

Conservation

PhyloP100: 6.51

Publications

0 publications found

Variant links:

Genes affected

POLR3GL (HGNC:28466): (RNA polymerase III subunit GL) Predicted to enable chromatin binding activity. Involved in transcription by RNA polymerase III. Located in nucleus. Part of RNA polymerase III complex. [provided by Alliance of Genome Resources, Apr 2022]

POLR3GL links:

ENSG00000280778 (HGNC:):

ENSG00000280778 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 5 ACMG points.

PVS1

Splicing +-2 bp (donor or acceptor) variant, product NOT destroyed by NMD, known LOF gene, truncates exone, which is 0.08675799 fraction of the gene. No cryptic splice site detected. Exon removal is inframe change.

PM2

Very rare variant in population databases, with high coverage;

PP5

Variant 1-145977482-G-A is Pathogenic according to our data. Variant chr1-145977482-G-A is described in ClinVar as [Likely_pathogenic]. Clinvar id is 617636.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
POLR3GL	NM_032305.3 link	c.326-1G>A		splice_acceptor_variant, intron_variant	Intron 4 of 7	ENST00000369314.2	NP_115681.1	Q9BT43
POLR3GL	NM_001330685.2 link	c.257-1G>A		splice_acceptor_variant, intron_variant	Intron 3 of 6		NP_001317614.1	Q9BT43A6NGX6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
POLR3GL	ENST00000369314.2 link	c.326-1G>A		splice_acceptor_variant, intron_variant	Intron 4 of 7	1	NM_032305.3	ENSP00000358320.1		Q9BT43
ENSG00000280778	ENST00000625258.1 link	c.41-1G>A		splice_acceptor_variant, intron_variant	Intron 2 of 3	5		ENSP00000487094.1		A0A0D9SG24

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000795

AC:

AN:

251422

AF XY:

0.00

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:

0.0000176

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000616

AC:

AN:

1461740

Hom.:

Cov.:

AF XY:

0.00000413

AC XY:

AN XY:

727182

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33474

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39698

South Asian (SAS)

AF:

0.00

AC:

AN:

86254

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53418

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.00000809

AC:

AN:

1111878

Other (OTH)

AF:

0.00

AC:

AN:

60392

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.458

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000935

Hom.:

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:2

Revision: no assertion criteria provided

LINK: link

Submissions by phenotype

Short stature, oligodontia, dysmorphic facies, and motor delay

Pathogenic:1

Mar 17, 2021

OMIM

Significance:Pathogenic

Review Status:no assertion criteria provided

Collection Method:literature only

- -

Hyperostosis;C0349588:Short stature;C0424503:Abnormal facial shape;C4082304:Oligodontia

Pathogenic:1

Jan 23, 2019

Genome Diagnostics Laboratory, University Medical Center Utrecht

Significance:Likely pathogenic

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Pathogenic

0.30

CADD

Pathogenic

(source)

DANN

Uncertain

0.99

PhyloP100

6.5

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Pathogenic

1.0

dbscSNV1_RF

Pathogenic

0.94

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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chr1-145977482-G-A

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over