Genetic Variant IL7R:p.Lys187Asn (chr5-35873503-G-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_002185.5(IL7R):c.561G>T(p.Lys187Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000657 in 152,148 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. K187K) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Consequence

IL7R
NM_002185.5 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.798

Publications

10 publications found

Variant links:

Genes affected

IL7R (HGNC:6024): (interleukin 7 receptor) The protein encoded by this gene is a receptor for interleukin 7 (IL7). The function of this receptor requires the interleukin 2 receptor, gamma chain (IL2RG), which is a common gamma chain shared by the receptors of various cytokines, including interleukins 2, 4, 7, 9, and 15. This protein has been shown to play a critical role in V(D)J recombination during lymphocyte development. Defects in this gene may be associated with severe combined immunodeficiency (SCID). Alternatively spliced transcript variants have been found. [provided by RefSeq, Dec 2015]

IL7R Gene-Disease associations (from GenCC):

immunodeficiency 104
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), ClinGen
Omenn syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
T-B+ severe combined immunodeficiency due to IL-7Ralpha deficiency
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

IL7R 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;

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002185.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
IL7R	NM_002185.5	MANE Select	c.561G>T	p.Lys187Asn	missense	Exon 5 of 8	NP_002176.2
IL7R	NM_001437964.1		c.561G>T	p.Lys187Asn	missense	Exon 5 of 7	NP_001424893.1
IL7R	NM_001410734.1		c.561G>T	p.Lys187Asn	missense	Exon 5 of 7	NP_001397663.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
IL7R	ENST00000303115.8	TSL:1 MANE Select	c.561G>T	p.Lys187Asn	missense	Exon 5 of 8	ENSP00000306157.3
IL7R	ENST00000506850.5	TSL:2	c.561G>T	p.Lys187Asn	missense	Exon 5 of 6	ENSP00000421207.1
IL7R	ENST00000509668.1	TSL:5	n.303G>T		non_coding_transcript_exon	Exon 1 of 3

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152148

Hom.:

Cov.:

show subpopulations

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD4 exome

Cov.:

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152148

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74318

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41408

American (AMR)

AF:

0.00

AC:

AN:

15282

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3464

East Asian (EAS)

AF:

0.00

AC:

AN:

5188

South Asian (SAS)

AF:

0.00

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10616

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68046

Other (OTH)

AF:

0.00

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

ExAC

AF:

0.00000824

AC:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.60

BayesDel_addAF

Benign

-0.13

BayesDel_noAF

Benign

-0.42

CADD

Benign

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.079

Eigen

Benign

-0.16

Eigen_PC

Benign

-0.14

FATHMM_MKL

Benign

0.21

LIST_S2

Benign

0.72

M_CAP

Benign

0.0095

MetaRNN

Benign

0.17

MetaSVM

Benign

-0.94

MutationAssessor

Uncertain

2.0

PhyloP100

0.80

PrimateAI

Benign

0.32

PROVEAN

Benign

-0.51

REVEL

Benign

0.034

Sift

Benign

0.21

Sift4G

Benign

0.41

Polyphen

0.77

Vest4

0.24

MutPred

0.37

Loss of MoRF binding (P = 0.0415)

MVP

0.83

MPC

0.017

ClinPred

0.37

GERP RS

0.47

PromoterAI

-0.025

Neutral

(source)

Varity_R

0.36

gMVP

0.22

Mutation Taster

=75/25

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.21

Details are displayed if max score is > 0.2

DS_AG_spliceai

0.21

Position offset: 16

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

ClinVar

Computational scores

Splicing

Publications

Other links and lift over