Genetic Variant IQCF3:p.Thr69Met (chr3-51830542-C-T) – 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_001393887.1(IQCF3):c.206C>T(p.Thr69Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000756 in 1,613,852 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 0.00026 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000057 ( 0 hom. )

Consequence

IQCF3
NM_001393887.1 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.356

Variant links:

Genes affected

IQCF3 (HGNC:31816): (IQ motif containing F3) Predicted to enable calmodulin binding activity. [provided by Alliance of Genome Resources, Apr 2022]

IQCF3 links:

ENSG00000285749 (HGNC:):

ENSG00000285749 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=0.045152813).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
IQCF3	NM_001393887.1 link	c.206C>T	p.Thr69Met	missense_variant	Exon 3 of 3	ENST00000440739.4	NP_001380816.1
IQCF3	NM_001085479.3 link	c.206C>T	p.Thr69Met	missense_variant	Exon 7 of 7		NP_001078948.1	P0C7M6
IQCF3	NM_001207023.2 link	c.206C>T	p.Thr69Met	missense_variant	Exon 7 of 7		NP_001193952.1	P0C7M6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
IQCF3	ENST00000440739.4 link	c.206C>T	p.Thr69Met	missense_variant	Exon 3 of 3	2	NM_001393887.1	ENSP00000402012.2		P0C7M6
ENSG00000285749	ENST00000456080.5 link	c.206C>T	p.Thr69Met	missense_variant	Exon 8 of 8	2		ENSP00000415609.1

Frequencies

GnomAD3 genomes

AF:

0.000256

AC:

AN:

152176

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000821

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000829

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000922

AC:

AN:

249344

Hom.:

AF XY:

0.0000888

AC XY:

AN XY:

135200

show subpopulations

Gnomad AFR exome

AF:

0.000642

Gnomad AMR exome

AF:

0.0000869

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000111

Gnomad SAS exome

AF:

0.000196

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000177

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000568

AC:

AN:

1461676

Hom.:

Cov.:

AF XY:

0.0000564

AC XY:

AN XY:

727122

show subpopulations

Gnomad4 AFR exome

AF:

0.000896

Gnomad4 AMR exome

AF:

0.0000671

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.000290

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000540

Gnomad4 OTH exome

AF:

0.000282

GnomAD4 genome

AF:

0.000256

AC:

AN:

152176

Hom.:

Cov.:

AF XY:

0.000242

AC XY:

AN XY:

74348

show subpopulations

Gnomad4 AFR

AF:

0.000821

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000829

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000672

Hom.:

Bravo

AF:

0.000359

ESP6500AA

AF:

0.000909

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000140

AC:

Asia WGS

AF:

0.000577

AC:

AN:

3478

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

May 24, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.206C>T (p.T69M) alteration is located in exon 7 (coding exon 3) of the IQCF3 gene. This alteration results from a C to T substitution at nucleotide position 206, causing the threonine (T) at amino acid position 69 to be replaced by a methionine (M). 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

0.087

BayesDel_addAF

Benign

-0.57

BayesDel_noAF

Benign

-0.69

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.018

.;.;T;T;T

Eigen

Benign

-1.0

Eigen_PC

Benign

-1.1

FATHMM_MKL

Benign

0.017

LIST_S2

Benign

0.78

T;.;.;.;T

M_CAP

Benign

0.012

MetaRNN

Benign

0.045

T;T;T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.86

.;.;L;L;L

PrimateAI

Benign

0.44

PROVEAN

Benign

-0.73

.;N;N;N;N

REVEL

Benign

0.022

Sift

Benign

0.16

.;T;T;T;T

Sift4G

Benign

0.14

.;T;T;T;T

Polyphen

0.58

.;.;P;P;P

Vest4

0.081, 0.15, 0.14

MVP

0.12

MPC

0.19

ClinPred

0.012

GERP RS

-1.5

Varity_R

0.019

gMVP

0.075

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