Genetic Variant STEAP2:p.Asp139Tyr (chr7-90225497-G-T) – ACMG Classification: Likely_benign (-5 pts)

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BP4BS2

The NM_001244944.2(STEAP2):c.415G>T(p.Asp139Tyr) variant causes a missense change. The variant allele was found at a frequency of 0.000107 in 1,613,750 control chromosomes in the GnomAD database, including 7 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00016 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00010 ( 7 hom. )

Consequence

STEAP2
NM_001244944.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.66

Variant links:

Genes affected

STEAP2 (HGNC:17885): (STEAP2 metalloreductase) This gene is a member of the STEAP family and encodes a multi-pass membrane protein that localizes to the Golgi complex, the plasma membrane, and the vesicular tubular structures in the cytosol. A highly similar protein in mouse has both ferrireductase and cupric reductase activity, and stimulates the cellular uptake of both iron and copper in vitro. Increased transcriptional expression of the human gene is associated with prostate cancer progression. Alternate transcriptional splice variants, encoding different isoforms, have been characterized. [provided by RefSeq, Jul 2008]

STEAP2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.3115456).

BS2

High Homozygotes in GnomAdExome4 at 7 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
STEAP2	NM_001244944.2 link	c.415G>T	p.Asp139Tyr	missense_variant	Exon 3 of 6	ENST00000394621.7	NP_001231873.1	Q8NFT2-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
STEAP2	ENST00000394621.7 link	c.415G>T	p.Asp139Tyr	missense_variant	Exon 3 of 6	1	NM_001244944.2	ENSP00000378119.2		Q8NFT2-1

Frequencies

GnomAD3 genomes

AF:

0.000158

AC:

AN:

152116

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00111

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00633

Gnomad NFE

AF:

0.0000588

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000877

AC:

AN:

250984

Hom.:

AF XY:

0.000111

AC XY:

AN XY:

135624

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000174

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000164

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000793

Gnomad OTH exome

AF:

0.000327

GnomAD4 exome

AF:

0.000102

AC:

149

AN:

1461516

Hom.:

Cov.:

AF XY:

0.000107

AC XY:

AN XY:

727030

show subpopulations

Gnomad4 AFR exome

AF:

0.000329

Gnomad4 AMR exome

AF:

0.000134

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.000232

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000342

Gnomad4 OTH exome

AF:

0.000132

GnomAD4 genome

AF:

0.000158

AC:

AN:

152234

Hom.:

Cov.:

AF XY:

0.000228

AC XY:

AN XY:

74426

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00111

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000208

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000588

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000773

Hom.:

Bravo

AF:

0.000132

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000824

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.000273

EpiControl

AF:

0.000119

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Aug 13, 2021

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.415G>T (p.D139Y) alteration is located in exon 2 (coding exon 1) of the STEAP2 gene. This alteration results from a G to T substitution at nucleotide position 415, causing the aspartic acid (D) at amino acid position 139 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

0.25

BayesDel_addAF

Benign

-0.15

BayesDel_noAF

Benign

-0.18

CADD

Pathogenic

DANN

Uncertain

0.99

DEOGEN2

Benign

0.12

T;T;T;.;T;.;T;.

Eigen

Pathogenic

0.71

Eigen_PC

Pathogenic

0.73

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Uncertain

0.91

D;.;D;.;.;D;D;D

M_CAP

Benign

0.015

MetaRNN

Benign

0.31

T;T;T;T;T;T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Uncertain

2.5

.;M;M;M;M;M;.;M

PrimateAI

Uncertain

0.62

PROVEAN

Uncertain

-3.2

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

REVEL

Benign

0.25

Sift

Uncertain

0.0080

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

Sift4G

Uncertain

0.042

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

Polyphen

0.94

.;P;P;.;P;.;P;.

Vest4

0.63, 0.62, 0.62, 0.60, 0.62

MVP

0.44

MPC

0.14

ClinPred

0.20

GERP RS

5.7

Varity_R

0.47

gMVP

0.77

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