Genetic Variant IAH1:p.Asn89Ser (chr2-9478353-A-G) – ACMG Classification: Likely_pathogenic (8 pts)

Variant summary

Our verdict is Likely pathogenic. Variant got 8 ACMG points: 8P and 0B. PM1PM2PP3_Strong

The NM_001039613.3(IAH1):c.266A>G(p.Asn89Ser) variant causes a missense change. The variant allele was found at a frequency of 0.00000824 in 1,455,632 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: 32)

Exomes 𝑓: 0.0000082 ( 0 hom. )

Consequence

IAH1
NM_001039613.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.90

Variant links:

Genes affected

IAH1 (HGNC:27696): (isoamyl acetate hydrolyzing esterase 1 (putative)) Enables identical protein binding activity. Predicted to be involved in lipid catabolic process. [provided by Alliance of Genome Resources, Apr 2022]

IAH1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 8 ACMG points.

PM1

In a site Transition state stabilizer (size 0) in uniprot entity IAH1_HUMAN

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.96

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
IAH1	NM_001039613.3 link	c.266A>G	p.Asn89Ser	missense_variant	Exon 3 of 6	ENST00000497473.6	NP_001034702.1	Q2TAA2-1A0A140VJL6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
IAH1	ENST00000497473.6 link	c.266A>G	p.Asn89Ser	missense_variant	Exon 3 of 6	1	NM_001039613.3	ENSP00000417580.1		Q2TAA2-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000407

AC:

AN:

245712

Hom.:

AF XY:

0.00

AC XY:

AN XY:

133282

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:

0.00000891

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000824

AC:

AN:

1455632

Hom.:

Cov.:

AF XY:

0.00000829

AC XY:

AN XY:

723454

show subpopulations

Gnomad4 AFR exome

AF:

0.0000301

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:

0.00000992

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Nov 24, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.266A>G (p.N89S) alteration is located in exon 3 (coding exon 3) of the IAH1 gene. This alteration results from a A to G substitution at nucleotide position 266, causing the asparagine (N) at amino acid position 89 to be replaced by a serine (S). 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

0.33

BayesDel_addAF

Uncertain

0.063

BayesDel_noAF

Benign

-0.15

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.52

D;T

Eigen

Pathogenic

0.82

Eigen_PC

Pathogenic

0.71

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.90

D;D

M_CAP

Benign

0.069

MetaRNN

Pathogenic

0.96

D;D

MetaSVM

Uncertain

-0.074

MutationAssessor

Pathogenic

3.9

H;.

PrimateAI

Benign

0.41

PROVEAN

Pathogenic

-4.8

D;D

REVEL

Uncertain

0.56

Sift

Pathogenic

0.0

D;D

Sift4G

Pathogenic

0.0

D;D

Polyphen

1.0

D;.

Vest4

0.74

MutPred

0.89

Gain of disorder (P = 0.0733);.;

MVP

0.83

MPC

0.40

ClinPred

1.0

GERP RS

3.8

Varity_R

0.72

gMVP

0.97

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