Variant chr15-67372177-G-T details in Genebe, Genetics Data Aggregator

Variant summary

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

The NM_001031715.3(IQCH):c.820G>T(p.Asp274Tyr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000062 in 1,613,906 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. D274G) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00035 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000032 ( 0 hom. )

Consequence

IQCH
NM_001031715.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.367

Variant links:

Genes affected

IQCH (HGNC:25721): (IQ motif containing H)

IQCH links:

IQCH-AS1 (HGNC:44104): (IQCH antisense RNA 1)

IQCH-AS1 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=0.026314795).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
IQCH	NM_001031715.3 linkuse as main transcript	c.820G>T	p.Asp274Tyr	missense_variant	9/21	ENST00000335894.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
IQCH	ENST00000335894.9 linkuse as main transcript	c.820G>T	p.Asp274Tyr	missense_variant	9/21	1	NM_001031715.3	A2	Q86VS3-1
IQCH-AS1	ENST00000669759.1 linkuse as main transcript	n.121+49158C>A		intron_variant, non_coding_transcript_variant

Frequencies

GnomAD3 genomes

AF:

0.000348

AC:

AN:

152140

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00118

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000197

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000917

AC:

AN:

250952

Hom.:

AF XY:

0.0000442

AC XY:

AN XY:

135642

show subpopulations

Gnomad AFR exome

AF:

0.00117

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:

0.0000176

Gnomad OTH exome

AF:

0.000164

GnomAD4 exome

AF:

0.0000322

AC:

AN:

1461648

Hom.:

Cov.:

AF XY:

0.0000275

AC XY:

AN XY:

727124

show subpopulations

Gnomad4 AFR exome

AF:

0.00102

Gnomad4 AMR exome

AF:

0.0000671

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:

0.00000540

Gnomad4 OTH exome

AF:

0.0000663

GnomAD4 genome

AF:

0.000348

AC:

AN:

152258

Hom.:

Cov.:

AF XY:

0.000282

AC XY:

AN XY:

74448

show subpopulations

Gnomad4 AFR

AF:

0.00118

Gnomad4 AMR

AF:

0.000196

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000140

Hom.:

Bravo

AF:

0.000355

ESP6500AA

AF:

0.00136

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000157

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 05, 2023

The c.820G>T (p.D274Y) alteration is located in exon 9 (coding exon 9) of the IQCH gene. This alteration results from a G to T substitution at nucleotide position 820, causing the aspartic acid (D) at amino acid position 274 to be replaced by a tyrosine (Y). 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

Benign

-0.46

BayesDel_noAF

Benign

-0.47

CADD

Benign

0.15

DANN

Uncertain

0.98

DEOGEN2

Benign

0.067

T;.;.;.

Eigen

Benign

-0.77

Eigen_PC

Benign

-0.83

FATHMM_MKL

Benign

0.14

LIST_S2

Benign

0.75

T;D;T;T

M_CAP

Benign

0.023

MetaRNN

Benign

0.026

T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.1

L;.;.;.

MutationTaster

Benign

1.0

N;N;N;N

PrimateAI

Benign

0.26

PROVEAN

Benign

-2.1

N;.;.;D

REVEL

Benign

0.11

Sift

Uncertain

0.010

D;.;.;D

Sift4G

Uncertain

0.0050

D;D;D;D

Polyphen

0.57

P;P;P;P

Vest4

0.35

MVP

0.088

MPC

0.31

ClinPred

0.032

GERP RS

2.1

Varity_R

0.11

gMVP

0.68

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