Genetic Variant IL21R:p.Pro220Pro (chr16-27444694-G-A) – ACMG Classification: Likely_benign (-5 pts)

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 2P and 7B. PM2BP4_StrongBP6_ModerateBP7

The NM_181078.3(IL21R):c.660G>A(p.Pro220Pro) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000138 in 1,520,736 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: 𝑓 0.000039 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000011 ( 0 hom. )

Consequence

IL21R
NM_181078.3 synonymous

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: -3.80

Publications

1 publications found

Variant links:

Genes affected

IL21R (HGNC:6006): (interleukin 21 receptor) The protein encoded by this gene is a cytokine receptor for interleukin 21 (IL21). It belongs to the type I cytokine receptors, and has been shown to form a heterodimeric receptor complex with the common gamma-chain, a receptor subunit also shared by the receptors for interleukin 2, 4, 7, 9, and 15. This receptor transduces the growth promoting signal of IL21, and is important for the proliferation and differentiation of T cells, B cells, and natural killer (NK) cells. The ligand binding of this receptor leads to the activation of multiple downstream signaling molecules, including JAK1, JAK3, STAT1, and STAT3. Knockout studies of a similar gene in mouse suggest a role for this gene in regulating immunoglobulin production. Three alternatively spliced transcript variants have been described. [provided by RefSeq, Jul 2010]

IL21R Gene-Disease associations (from GenCC):

immunodeficiency disease
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
cryptosporidiosis-chronic cholangitis-liver disease syndrome
Inheritance: AR Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), Orphanet

IL21R links:

ENSG00000308281 (HGNC:):

ENSG00000308281 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -5 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.74).

BP6

Variant 16-27444694-G-A is Benign according to our data. Variant chr16-27444694-G-A is described in ClinVar as Likely_benign. ClinVar VariationId is 473945.Status of the report is criteria_provided_single_submitter, 1 stars.

BP7

Synonymous conserved (PhyloP=-3.8 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_181078.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
IL21R	NM_181078.3	MANE Select	c.660G>A	p.Pro220Pro	synonymous	Exon 6 of 9	NP_851564.1
IL21R	NM_181079.5		c.726G>A	p.Pro242Pro	synonymous	Exon 7 of 10	NP_851565.4
IL21R	NM_021798.4		c.660G>A	p.Pro220Pro	synonymous	Exon 6 of 9	NP_068570.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
IL21R	ENST00000337929.8	TSL:1 MANE Select	c.660G>A	p.Pro220Pro	synonymous	Exon 6 of 9	ENSP00000338010.3
IL21R	ENST00000395754.4	TSL:1	c.660G>A	p.Pro220Pro	synonymous	Exon 6 of 9	ENSP00000379103.4
IL21R	ENST00000564089.5	TSL:5	c.660G>A	p.Pro220Pro	synonymous	Exon 7 of 10	ENSP00000456707.1

Frequencies

GnomAD3 genomes

AF:

0.0000394

AC:

AN:

152214

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000192

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000115

AC:

AN:

174530

AF XY:

0.0000106

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000107

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000110

AC:

AN:

1368522

Hom.:

Cov.:

AF XY:

0.00000742

AC XY:

AN XY:

673698

show subpopulations

African (AFR)

AF:

0.000101

AC:

AN:

29570

American (AMR)

AF:

0.0000659

AC:

AN:

30356

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

21762

East Asian (EAS)

AF:

0.00

AC:

AN:

35502

South Asian (SAS)

AF:

0.00

AC:

AN:

71866

European-Finnish (FIN)

AF:

0.00

AC:

AN:

51524

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5396

European-Non Finnish (NFE)

AF:

0.00000938

AC:

AN:

1066400

Other (OTH)

AF:

0.00

AC:

AN:

56146

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.468

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

AF:

0.0000394

AC:

AN:

152214

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74366

show subpopulations

African (AFR)

AF:

0.0000483

AC:

AN:

41434

American (AMR)

AF:

0.0000654

AC:

AN:

15292

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.000192

AC:

AN:

5204

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10622

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000294

AC:

AN:

68040

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.467

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome 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

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000189

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Cryptosporidiosis-chronic cholangitis-liver disease syndrome

Benign:1

Aug 14, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.74

CADD

Benign

0.071

(source)

DANN

Benign

0.85

PhyloP100

-3.8

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over