Genetic Variant ISOC1:p.Val8Asp (chr5-129094789-T-A) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_016048.2(ISOC1):c.23T>A(p.Val8Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000349 in 1,520,342 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 34)

Exomes 𝑓: 0.000035 ( 0 hom. )

Consequence

ISOC1
NM_016048.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.368

Variant links:

Genes affected

ISOC1 (HGNC:24254): (isochorismatase domain containing 1) Predicted to be located in peroxisome. Predicted to be active in cytoplasm. [provided by Alliance of Genome Resources, Apr 2022]

ISOC1 links:

LOC124901060 (HGNC:):

LOC124901060 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.12621096).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ISOC1	NM_016048.2 link	c.23T>A	p.Val8Asp	missense_variant	Exon 1 of 5	ENST00000173527.6	NP_057132.2	Q96CN7
LOC124901060	XR_007058926.1 link	n.842A>T		non_coding_transcript_exon_variant	Exon 2 of 2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ISOC1	ENST00000173527.6 link	c.23T>A	p.Val8Asp	missense_variant	Exon 1 of 5	1	NM_016048.2	ENSP00000173527.5		Q96CN7
ISOC1	ENST00000514194.5 link	c.23T>A	p.Val8Asp	missense_variant	Exon 1 of 3	3		ENSP00000421273.1		D6RGE2

Frequencies

GnomAD3 genomes

AF:

0.0000329

AC:

AN:

151904

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:

0.0000736

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000406

AC:

AN:

123018

AF XY:

0.0000445

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 FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000103

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000351

AC:

AN:

1368438

Hom.:

Cov.:

AF XY:

0.0000415

AC XY:

AN XY:

674866

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

29540

American (AMR)

AF:

0.00

AC:

AN:

33912

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

24660

East Asian (EAS)

AF:

0.00

AC:

AN:

33598

South Asian (SAS)

AF:

0.00

AC:

AN:

77084

European-Finnish (FIN)

AF:

0.00

AC:

AN:

36696

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4152

European-Non Finnish (NFE)

AF:

0.0000429

AC:

AN:

1071724

Other (OTH)

AF:

0.0000350

AC:

AN:

57072

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.496

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.0000329

AC:

AN:

151904

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74190

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41392

American (AMR)

AF:

0.00

AC:

AN:

15254

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3466

East Asian (EAS)

AF:

0.00

AC:

AN:

5150

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10554

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000736

AC:

AN:

67942

Other (OTH)

AF:

0.00

AC:

AN:

2088

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.545

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.0000926

Hom.:

Bravo

AF:

0.0000340

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Oct 20, 2023

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.23T>A (p.V8D) alteration is located in exon 1 (coding exon 1) of the ISOC1 gene. This alteration results from a T to A substitution at nucleotide position 23, causing the valine (V) at amino acid position 8 to be replaced by an aspartic acid (D). 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

0.13

BayesDel_addAF

Benign

-0.21

BayesDel_noAF

Benign

-0.32

CADD

Benign

(source)

DANN

Benign

0.96

DEOGEN2

Benign

0.0078

T;T

Eigen

Benign

-1.1

Eigen_PC

Benign

-1.2

FATHMM_MKL

Benign

0.051

LIST_S2

Benign

0.64

T;T

M_CAP

Pathogenic

0.54

MetaRNN

Benign

0.13

T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.0

.;N

PhyloP100

-0.37

PrimateAI

Pathogenic

0.88

PROVEAN

Benign

-0.22

N;N

REVEL

Benign

0.038

Sift

Pathogenic

0.0

D;D

Sift4G

Uncertain

0.035

D;D

Polyphen

0.0040

.;B

Vest4

0.42

MutPred

0.35

Gain of disorder (P = 0.0446);Gain of disorder (P = 0.0446);

MVP

0.20

MPC

0.79

ClinPred

0.16

GERP RS

-1.9

PromoterAI

0.031

Neutral

(source)

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.0

Varity_R

0.40

gMVP

0.58

Mutation Taster

=91/9

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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5-129094789-T-A

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over