Genetic Variant IL20RA:c.725-9_725-5delTTTTT (chr6-137004764-TAAAAA-T) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_014432.4(IL20RA):c.725-9_725-5delTTTTT variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000208 in 1,298,352 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.0 ( 0 hom., cov: 0)

Exomes 𝑓: 0.000021 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

IL20RA
NM_014432.4 splice_region, intron

Scores

Not classified

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 1.60

Publications

0 publications found

Variant links:

Genes affected

IL20RA (HGNC:6003): (interleukin 20 receptor subunit alpha) This gene encodes a member of the type II cytokine receptor family. The encoded protein is a subunit of the receptor for interleukin 20, a cytokine that may be involved in epidermal function. The interleukin 20 receptor is a heterodimeric complex consisting of the encoded protein and interleukin 20 receptor beta. This gene and interleukin 20 receptor beta are highly expressed in skin, and are upregulated in psoriasis. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2013]

IL20RA links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 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
IL20RA	NM_014432.4 link	c.725-9_725-5delTTTTT		splice_region_variant, intron_variant	Intron 5 of 6	ENST00000316649.10	NP_055247.4	Q9UHF4-1

Ensembl

Gene	Transcript	HGVSc	Effect	Exon rank	TSL	MANE	Protein	UniProt
IL20RA	ENST00000316649.10 link	c.725-9_725-5delTTTTT	splice_region_variant, intron_variant	Intron 5 of 6	1	NM_014432.4	ENSP00000314976.5	Q9UHF4-1
IL20RA	ENST00000367748.4 link	c.392-9_392-5delTTTTT	splice_region_variant, intron_variant	Intron 4 of 5	1		ENSP00000356722.1	Q9UHF4-2
IL20RA	ENST00000541547.5 link	c.578-9_578-5delTTTTT	splice_region_variant, intron_variant	Intron 5 of 6	2		ENSP00000437843.1	Q9UHF4-3
IL20RA	ENST00000468393.5 link	c.392-9_392-5delTTTTT	splice_region_variant, intron_variant	Intron 4 of 4	4		ENSP00000489177.1	A0A0U1RQU9

Frequencies

GnomAD3 genomes

AF:

0.00

AC:

AN:

146038

Hom.:

Cov.:

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.0000208

AC:

AN:

1298352

Hom.:

AF XY:

0.0000170

AC XY:

AN XY:

647164

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

28512

American (AMR)

AF:

0.000105

AC:

AN:

28530

Ashkenazi Jewish (ASJ)

AF:

0.0000450

AC:

AN:

22226

East Asian (EAS)

AF:

0.0000273

AC:

AN:

36674

South Asian (SAS)

AF:

0.0000275

AC:

AN:

72848

European-Finnish (FIN)

AF:

0.0000459

AC:

AN:

43600

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4802

European-Non Finnish (NFE)

AF:

0.0000179

AC:

AN:

1007276

Other (OTH)

AF:

0.00

AC:

AN:

53884

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.253

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

Data not reliable, filtered out with message: AC0

AF:

0.00

AC:

AN:

146038

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

70850

African (AFR)

AF:

0.00

AC:

AN:

39192

American (AMR)

AF:

0.00

AC:

AN:

14824

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3440

East Asian (EAS)

AF:

0.00

AC:

AN:

5086

South Asian (SAS)

AF:

0.00

AC:

AN:

4652

European-Finnish (FIN)

AF:

0.00

AC:

AN:

8868

Middle Eastern (MID)

AF:

0.00

AC:

AN:

312

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

66740

Other (OTH)

AF:

0.00

AC:

AN:

2018

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

PhyloP100

1.6

Splicing

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over