Genetic Variant NM_145805.3:c.638A>G (chr15-76340402-A-G) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_145805.3(ISL2):c.638A>G(p.Asn213Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,320 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 34)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

ISL2
NM_145805.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.40

Publications

0 publications found

Variant links:

Genes affected

ISL2 (HGNC:18524): (ISL LIM homeobox 2) Enables sequence-specific double-stranded DNA binding activity. Predicted to be involved in axonogenesis; neuron fate specification; and regulation of transcription by RNA polymerase II. Predicted to act upstream of or within negative regulation of neuron differentiation and neuron differentiation. Predicted to be part of chromatin. Predicted to be active in nucleus. [provided by Alliance of Genome Resources, Apr 2022]

ISL2 links:

ENSG00000259514 (HGNC:):

ENSG00000259514 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.886

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_145805.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ISL2	NM_145805.3	MANE Select	c.638A>G	p.Asn213Ser	missense	Exon 4 of 6	NP_665804.1	Q96A47

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
ISL2	ENST00000290759.9	TSL:1 MANE Select	c.638A>G	p.Asn213Ser	missense	Exon 4 of 6	ENSP00000290759.4	Q96A47
ISL2	ENST00000558656.1	TSL:5	n.375A>G		non_coding_transcript_exon	Exon 3 of 5	ENSP00000453837.1	H0YN25
ENSG00000259514	ENST00000559539.1	TSL:3	n.263T>C		non_coding_transcript_exon	Exon 2 of 3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461320

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727000

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

33470

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26128

East Asian (EAS)

AF:

0.00

AC:

AN:

39694

South Asian (SAS)

AF:

0.00

AC:

AN:

86248

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53004

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5720

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111954

Other (OTH)

AF:

0.00

AC:

AN:

60378

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.375

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000756

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.79

BayesDel_addAF

Uncertain

0.099

BayesDel_noAF

Benign

-0.10

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.83

Eigen

Uncertain

0.50

Eigen_PC

Uncertain

0.51

FATHMM_MKL

Uncertain

0.97

LIST_S2

Uncertain

0.97

M_CAP

Uncertain

0.18

MetaRNN

Pathogenic

0.89

MetaSVM

Uncertain

0.74

MutationAssessor

Benign

1.2

PhyloP100

7.4

PrimateAI

Pathogenic

0.82

PROVEAN

Pathogenic

-4.8

REVEL

Pathogenic

0.71

Sift

Pathogenic

0.0

Sift4G

Uncertain

0.026

Polyphen

1.0

Vest4

0.84

MutPred

0.57

Gain of phosphorylation at N213 (P = 0.0449)

MVP

0.99

MPC

1.6

ClinPred

1.0

GERP RS

5.0

Varity_R

0.85

gMVP

0.75

Mutation Taster

=32/68

disease causing

(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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over