Genetic Variant IL4I1:p.Gly437Arg (chr19-49890065-C-G) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_152899.2(IL4I1):c.1309G>C(p.Gly437Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000716 in 1,397,012 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 7.2e-7 ( 0 hom. )

Consequence

IL4I1
NM_152899.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.42

Variant links:

Genes affected

IL4I1 (HGNC:19094): (interleukin 4 induced 1) This gene encodes a secreted L-amino acid oxidase protein which primarily catabolizes L-phenylalanine and, to a lesser extent, L-arginine. The expression of this gene is induced by the cytokine interleukin 4 in B cells. This gene is also expressed in macrophages and dendritic cells. This protein may play a role immune system escape as it is expressed in tumor-associated macrophages and suppresses T-cell responses. This protein also contains domains thought to be involved in the binding of flavin adenine dinucleotide (FAD) cofactor. Multiple transcript variants encoding different isoforms have been found for this gene. Some transcripts of this gene share a promoter and exons of the 5' UTR with the overlapping NUP62 gene. [provided by RefSeq, Jul 2020]

IL4I1 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 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
IL4I1	NM_152899.2 link	c.1309G>C	p.Gly437Arg	missense_variant	Exon 8 of 8	ENST00000391826.7	NP_690863.1	Q96RQ9-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
IL4I1	ENST00000391826.7 link	c.1309G>C	p.Gly437Arg	missense_variant	Exon 8 of 8	1	NM_152899.2	ENSP00000375702.1		Q96RQ9-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000670

AC:

AN:

149200

Hom.:

AF XY:

0.0000125

AC XY:

AN XY:

79992

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000177

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

7.16e-7

AC:

AN:

1397012

Hom.:

Cov.:

AF XY:

0.00000145

AC XY:

AN XY:

689256

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

9.27e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000469

Hom.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Mar 31, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1375G>C (p.G459R) alteration is located in exon 10 (coding exon 7) of the IL4I1 gene. This alteration results from a G to C substitution at nucleotide position 1375, causing the glycine (G) at amino acid position 459 to be replaced by an arginine (R). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.19

BayesDel_addAF

Uncertain

0.064

BayesDel_noAF

Benign

-0.13

CADD

Uncertain

DANN

Uncertain

0.98

DEOGEN2

Uncertain

0.64

D;.;.

Eigen

Benign

0.10

Eigen_PC

Benign

-0.016

FATHMM_MKL

Uncertain

0.89

LIST_S2

Benign

0.72

T;.;T

M_CAP

Pathogenic

0.85

MetaRNN

Uncertain

0.68

D;D;D

MetaSVM

Uncertain

0.27

MutationAssessor

Uncertain

2.3

M;.;.

PrimateAI

Uncertain

0.75

PROVEAN

Uncertain

-3.1

D;D;.

REVEL

Uncertain

0.40

Sift

Benign

0.35

T;T;.

Sift4G

Uncertain

0.025

D;D;D

Polyphen

0.99

D;D;D

Vest4

0.35

MutPred

0.51

Gain of MoRF binding (P = 0.0376);.;.;

MVP

0.79

MPC

2.4

ClinPred

0.91

GERP RS

3.2

Varity_R

0.26

gMVP

0.98

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over