Genetic Variant ISLR2:p.Ser238Thr (chr15-74133467-G-C) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_020851.3(ISLR2):c.713G>C(p.Ser238Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000248 in 1,612,492 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/20 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

ISLR2
NM_020851.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.457

Variant links:

Genes affected

ISLR2 (HGNC:29286): (immunoglobulin superfamily containing leucine rich repeat 2) Predicted to be involved in positive regulation of axon extension. Predicted to be located in plasma membrane. Predicted to be integral component of membrane. Predicted to be active in cell surface. [provided by Alliance of Genome Resources, Apr 2022]

ISLR2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.04162687).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ISLR2	NM_020851.3 link	c.713G>C	p.Ser238Thr	missense_variant	Exon 3 of 3	ENST00000453268.3	NP_065902.1	Q6UXK2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ISLR2	ENST00000453268.3 link	c.713G>C	p.Ser238Thr	missense_variant	Exon 3 of 3	1	NM_020851.3	ENSP00000411834.2		Q6UXK2

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152232

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

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

GnomAD3 exomes

AF:

0.00000409

AC:

AN:

244548

Hom.:

AF XY:

0.00

AC XY:

AN XY:

133324

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000290

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1460260

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

726530

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.0000224

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:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152232

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74368

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.0000654

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

Bravo

AF:

0.0000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Feb 04, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.713G>C (p.S238T) alteration is located in exon 4 (coding exon 1) of the ISLR2 gene. This alteration results from a G to C substitution at nucleotide position 713, causing the serine (S) at amino acid position 238 to be replaced by a threonine (T). 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

0.094

BayesDel_addAF

Benign

-0.28

BayesDel_noAF

Benign

-0.63

CADD

Benign

9.7

DANN

Benign

0.81

DEOGEN2

Benign

0.040

T;T;T;T;T

Eigen

Benign

-0.59

Eigen_PC

Benign

-0.45

FATHMM_MKL

Benign

0.19

LIST_S2

Benign

0.38

.;.;T;.;.

M_CAP

Benign

0.010

MetaRNN

Benign

0.042

T;T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

-0.20

N;N;N;N;N

PrimateAI

Uncertain

0.59

PROVEAN

Benign

-0.33

N;N;N;N;N

REVEL

Benign

0.079

Sift

Benign

1.0

T;T;T;T;T

Sift4G

Benign

0.86

T;T;T;T;T

Polyphen

0.012

B;B;B;B;B

Vest4

0.051

MutPred

0.21

Gain of phosphorylation at S238 (P = 0.1218);Gain of phosphorylation at S238 (P = 0.1218);Gain of phosphorylation at S238 (P = 0.1218);Gain of phosphorylation at S238 (P = 0.1218);Gain of phosphorylation at S238 (P = 0.1218);

MVP

0.15

ClinPred

0.034

GERP RS

3.3

Varity_R

0.098

gMVP

0.33

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