chr12-57243817-T-A

Position:

chr12-57243817-T-A

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_145064.3(STAC3):c.1090A>T(p.Ile364Phe) variant causes a missense change. The variant allele was found at a frequency of 0.0000105 in 1,613,892 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000096 ( 0 hom. )

Consequence

STAC3
NM_145064.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 5.74

Variant links:

Genes affected

STAC3 (HGNC:28423): (SH3 and cysteine rich domain 3) The protein encoded by this gene is a component of the excitation-contraction coupling machinery of muscles. This protein is a member of the Stac gene family and contains an N-terminal cysteine-rich domain and two SH3 domains. Mutations in this gene are a cause of Native American myopathy. [provided by RefSeq, Nov 2013]

STAC3 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
STAC3	NM_145064.3 linkuse as main transcript	c.1090A>T	p.Ile364Phe	missense_variant	12/12	ENST00000332782.7	NP_659501.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
STAC3	ENST00000332782.7 linkuse as main transcript	c.1090A>T	p.Ile364Phe	missense_variant	12/12	2	NM_145064.3	ENSP00000329200	P1	Q96MF2-1
STAC3	ENST00000554578.5 linkuse as main transcript	c.973A>T	p.Ile325Phe	missense_variant	11/11	1		ENSP00000452068		Q96MF2-2
STAC3	ENST00000557176.5 linkuse as main transcript	c.*150A>T		3_prime_UTR_variant, NMD_transcript_variant	8/8	1		ENSP00000450740
STAC3	ENST00000546246.2 linkuse as main transcript	c.532A>T	p.Ile178Phe	missense_variant	9/9	2		ENSP00000441515		Q96MF2-3

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152194

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:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000120

AC:

AN:

250510

Hom.:

AF XY:

0.00000737

AC XY:

AN XY:

135636

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000289

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:

0.00000884

Gnomad OTH exome

AF:

0.000164

GnomAD4 exome

AF:

0.00000958

AC:

AN:

1461698

Hom.:

Cov.:

AF XY:

0.00000963

AC XY:

AN XY:

727134

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000224

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:

0.00000899

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152194

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74342

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000441

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000564

Hom.:

Bravo

AF:

0.0000340

ExAC

AF:

0.0000165

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 12, 2023

The c.1090A>T (p.I364F) alteration is located in exon 12 (coding exon 11) of the STAC3 gene. This alteration results from a A to T substitution at nucleotide position 1090, causing the isoleucine (I) at amino acid position 364 to be replaced by a phenylalanine (F). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Bailey-Bloch congenital myopathy

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jul 09, 2022

In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0"). This variant has not been reported in the literature in individuals affected with STAC3-related conditions. This variant is present in population databases (rs779483995, gnomAD 0.003%). This sequence change replaces isoleucine, which is neutral and non-polar, with phenylalanine, which is neutral and non-polar, at codon 364 of the STAC3 protein (p.Ile364Phe). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.72

BayesDel_addAF

Benign

-0.029

BayesDel_noAF

Benign

-0.20

CADD

Uncertain

DANN

Uncertain

0.99

DEOGEN2

Benign

0.19

.;T;.

Eigen

Uncertain

0.52

Eigen_PC

Uncertain

0.49

FATHMM_MKL

Uncertain

0.89

LIST_S2

Uncertain

0.87

D;D;D

M_CAP

Benign

0.015

MetaRNN

Uncertain

0.70

D;D;D

MetaSVM

Benign

-1.2

MutationAssessor

Uncertain

2.5

.;M;.

MutationTaster

Benign

1.0

D;D;D

PrimateAI

Uncertain

0.76

PROVEAN

Uncertain

-3.5

D;D;D

REVEL

Benign

0.21

Sift

Uncertain

0.0010

D;D;D

Sift4G

Uncertain

0.014

D;D;D

Polyphen

0.98

.;D;.

Vest4

0.76

MutPred

0.47

.;Gain of helix (P = 0.0696);.;

MVP

0.69

MPC

1.4

ClinPred

0.95

GERP RS

4.7

Varity_R

0.79

gMVP

0.93

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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