dbSNP rs566576601: IL12RB1:p.Cys658Gly (chr19-18059905-A-C) – ACMG Classification: Pathogenic (10 pts)

Variant summary

Our verdict is Pathogenic. Variant got 10 ACMG points: 10P and 0B. PVS1PM2

The NM_001290023.2(IL12RB1):c.1970+2T>G variant causes a splice donor, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000677 in 147,654 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 1/1 splice prediction tools predict no significant impact on normal splicing. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.0000068 ( 0 hom., cov: 31)

Consequence

IL12RB1
NM_001290023.2 splice_donor, intron

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -1.46

Variant links:

Genes affected

IL12RB1 (HGNC:5971): (interleukin 12 receptor subunit beta 1) The protein encoded by this gene is a type I transmembrane protein that belongs to the hemopoietin receptor superfamily. This protein binds to interleukine 12 (IL12) with a low affinity, and is thought to be a part of IL12 receptor complex. This protein forms a disulfide-linked oligomer, which is required for its IL12 binding activity. The coexpression of this and IL12RB2 proteins was shown to lead to the formation of high-affinity IL12 binding sites and reconstitution of IL12 dependent signaling. Mutations in this gene impair the development of interleukin-17-producing T lymphocytes and result in increased susceptibility to mycobacterial and Salmonella infections. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Feb 2014]

IL12RB1 links:

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ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 10 ACMG points.

PVS1

Splicing +-2 bp (donor or acceptor) variant, LoF is a know mechanism of disease, Cryptic splice site detected, with MaxEntScore 4.6, offset of 38, new splice context is: acgGTcagg. Cryptic site results in frameshift change. If cryptic site found is not functional and variant results in exon loss, it results in frameshift change.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
IL12RB1	NM_005535.3 link	c.1972T>G	p.Cys658Gly	missense_variant	Exon 16 of 17	ENST00000593993.7	NP_005526.1	P42701-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
IL12RB1	ENST00000593993.7 link	c.1972T>G	p.Cys658Gly	missense_variant	Exon 16 of 17	1	NM_005535.3	ENSP00000472165.2		P42701-1
IL12RB1	ENST00000600835.6 link	c.1972T>G	p.Cys658Gly	missense_variant	Exon 17 of 18	1		ENSP00000470788.1		P42701-1

Frequencies

GnomAD3 genomes

AF:

0.00000677

AC:

AN:

147654

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000257

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

Cov.:

GnomAD4 genome

AF:

0.00000677

AC:

AN:

147654

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

71924

show subpopulations

Gnomad4 AFR

AF:

0.0000257

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.12

BayesDel_addAF

Uncertain

0.019

BayesDel_noAF

Benign

-0.21

CADD

Benign

0.92

DANN

Benign

0.84

DEOGEN2

Benign

0.079

T;T

Eigen

Benign

-1.1

Eigen_PC

Benign

-1.1

FATHMM_MKL

Benign

0.018

LIST_S2

Benign

0.38

.;T

M_CAP

Benign

0.041

MetaRNN

Benign

0.064

T;T

MetaSVM

Benign

-0.78

MutationAssessor

Benign

0.34

N;N

PrimateAI

Benign

0.33

Sift4G

Pathogenic

0.0

D;D

Polyphen

0.0010

B;B

Vest4

0.22

MutPred

0.25

Loss of stability (P = 0.0075);Loss of stability (P = 0.0075);

MVP

0.36

MPC

0.13

ClinPred

0.13

GERP RS

0.67

Varity_R

0.45

gMVP

0.14

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

No publications associated with this variant yet.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over