2-119245726-A-G

Position:

chr2-119245726-A-G

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NM_182915.3(STEAP3):c.260A>G(p.Gln87Arg) variant causes a missense change. The variant allele was found at a frequency of 0.000243 in 1,614,196 control chromosomes in the GnomAD database, including 1 homozygotes. 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 (★★).

Frequency

Genomes: 𝑓 0.00019 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00025 ( 1 hom. )

Consequence

STEAP3
NM_182915.3 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 5.28

Variant links:

Genes affected

STEAP3 (HGNC:24592): (STEAP3 metalloreductase) This gene encodes a multipass membrane protein that functions as an iron transporter. The encoded protein can reduce both iron (Fe3+) and copper (Cu2+) cations. This protein may mediate downstream responses to p53, including promoting apoptosis. Deficiency in this gene can cause anemia. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Aug 2015]

STEAP3 links:

STEAP3-AS1 (HGNC:41053): (STEAP3 antisense RNA 1)

STEAP3-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.034532577).

BS2

High AC in GnomAd4 at 29 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
STEAP3	NM_182915.3 linkuse as main transcript	c.260A>G	p.Gln87Arg	missense_variant	3/6	ENST00000393110.7
STEAP3-AS1	NR_046721.1 linkuse as main transcript	n.1914T>C		non_coding_transcript_exon_variant	2/2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
STEAP3	ENST00000393110.7 linkuse as main transcript	c.260A>G	p.Gln87Arg	missense_variant	3/6	1	NM_182915.3		Q658P3-2
STEAP3-AS1	ENST00000654197.1 linkuse as main transcript	n.1316T>C		non_coding_transcript_exon_variant	4/4

Frequencies

GnomAD3 genomes

AF:

0.000191

AC:

AN:

152210

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00124

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:

0.000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000183

AC:

AN:

251148

Hom.:

AF XY:

0.000206

AC XY:

AN XY:

135750

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000781

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:

0.000167

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000248

AC:

363

AN:

1461868

Hom.:

Cov.:

AF XY:

0.000245

AC XY:

178

AN XY:

727234

show subpopulations

Gnomad4 AFR exome

AF:

0.0000597

Gnomad4 AMR exome

AF:

0.000626

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:

0.000290

Gnomad4 OTH exome

AF:

0.000166

GnomAD4 genome

AF:

0.000190

AC:

AN:

152328

Hom.:

Cov.:

AF XY:

0.000228

AC XY:

AN XY:

74484

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00124

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000227

Hom.:

Bravo

AF:

0.000359

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000519

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000349

AC:

ExAC

AF:

0.000165

AC:

EpiCase

AF:

0.000218

EpiControl

AF:

0.000178

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Apr 12, 2022

The c.260A>G (p.Q87R) alteration is located in exon 3 (coding exon 2) of the STEAP3 gene. This alteration results from a A to G substitution at nucleotide position 260, causing the glutamine (Q) at amino acid position 87 to be replaced by an arginine (R). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Dec 05, 2023

This sequence change replaces glutamine, which is neutral and polar, with arginine, which is basic and polar, at codon 77 of the STEAP3 protein (p.Gln77Arg). This variant is present in population databases (rs200273960, gnomAD 0.09%), and has an allele count higher than expected for a pathogenic variant. This variant has not been reported in the literature in individuals affected with STEAP3-related conditions. ClinVar contains an entry for this variant (Variation ID: 2364119). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant¬†is likely to be tolerated. 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. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.19

BayesDel_addAF

Benign

-0.42

BayesDel_noAF

Benign

-0.45

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.034

.;T;.;T

Eigen

Benign

0.049

Eigen_PC

Benign

0.090

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Benign

0.68

T;.;T;T

M_CAP

Benign

0.011

MetaRNN

Benign

0.035

T;T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.82

.;L;.;L

MutationTaster

Benign

1.0

D;D;D;D;D;D;D;D

PrimateAI

Benign

0.45

PROVEAN

Benign

-0.51

N;N;N;N

REVEL

Benign

0.11

Sift

Benign

0.23

T;T;T;T

Sift4G

Benign

0.30

T;T;T;T

Polyphen

0.84

P;B;D;B

Vest4

0.36

MVP

0.57

MPC

0.18

ClinPred

0.19

GERP RS

3.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.8

Varity_R

0.19

gMVP

0.79

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