Genetic Variant IL7R:p.Gly20Ala (chr5-35857036-G-C) – ACMG Classification: Uncertain_significance (3 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2PP3

The NM_002185.5(IL7R):c.59G>C(p.Gly20Ala) variant causes a missense change. The variant allele was found at a frequency of 0.000000687 in 1,455,724 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G20E) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

IL7R
NM_002185.5 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 5.08

Publications

0 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:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.801

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
IL7R	NM_002185.5 link	c.59G>C	p.Gly20Ala	missense_variant	Exon 1 of 8	ENST00000303115.8	NP_002176.2	P16871-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
IL7R	ENST00000303115.8 link	c.59G>C	p.Gly20Ala	missense_variant	Exon 1 of 8	1	NM_002185.5	ENSP00000306157.3		P16871-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.87e-7

AC:

AN:

1455724

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

724644

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33356

American (AMR)

AF:

0.00

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26098

East Asian (EAS)

AF:

0.00

AC:

AN:

39656

South Asian (SAS)

AF:

0.00

AC:

AN:

86174

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52742

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5760

European-Non Finnish (NFE)

AF:

9.03e-7

AC:

AN:

1107002

Other (OTH)

AF:

0.00

AC:

AN:

60214

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.575

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.27

BayesDel_addAF

Pathogenic

0.20

BayesDel_noAF

Uncertain

0.050

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.23

.;.;T;.;.

Eigen

Pathogenic

0.76

Eigen_PC

Pathogenic

0.74

FATHMM_MKL

Benign

0.61

LIST_S2

Benign

0.84

T;T;T;T;T

M_CAP

Benign

0.052

MetaRNN

Pathogenic

0.80

D;D;D;D;D

MetaSVM

Uncertain

0.17

MutationAssessor

Uncertain

2.7

.;.;M;M;.

PhyloP100

5.1

PrimateAI

Uncertain

0.50

PROVEAN

Pathogenic

-4.5

D;D;N;N;D

REVEL

Uncertain

0.58

Sift

Uncertain

0.025

D;D;D;D;D

Sift4G

Pathogenic

0.0

D;D;T;D;D

Polyphen

1.0

.;.;D;.;.

Vest4

0.70, 0.70, 0.68

MutPred

0.71

Gain of sheet (P = 0.0101);Gain of sheet (P = 0.0101);Gain of sheet (P = 0.0101);Gain of sheet (P = 0.0101);Gain of sheet (P = 0.0101);

MVP

0.94

MPC

0.10

ClinPred

0.99

GERP RS

5.5

PromoterAI

-0.17

Neutral

(source)

Varity_R

0.35

gMVP

0.57

Mutation Taster

=54/46

polymorphism

(source)

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

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over