2-119245902-C-A

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_182915.3(STEAP3):​c.436C>A​(p.Leu146Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000155 in 1,613,948 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 33)
Exomes 𝑓: 0.000014 ( 0 hom. )

Consequence

STEAP3
NM_182915.3 missense

Scores

6
13

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.49
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-AS1 (HGNC:41053): (STEAP3 antisense RNA 1)

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -6 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.18527633).
BS2
High AC in GnomAd4 at 5 AD gene.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
STEAP3NM_182915.3 linkuse as main transcriptc.436C>A p.Leu146Ile missense_variant 3/6 ENST00000393110.7
STEAP3-AS1NR_046721.1 linkuse as main transcriptn.1738G>T non_coding_transcript_exon_variant 2/2

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
STEAP3ENST00000393110.7 linkuse as main transcriptc.436C>A p.Leu146Ile missense_variant 3/61 NM_182915.3 Q658P3-2
STEAP3-AS1ENST00000654197.1 linkuse as main transcriptn.1140G>T non_coding_transcript_exon_variant 4/4

Frequencies

GnomAD3 genomes
AF:
0.0000328
AC:
5
AN:
152218
Hom.:
0
Cov.:
33
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:
0.0000735
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.0000120
AC:
3
AN:
251014
Hom.:
0
AF XY:
0.00000737
AC XY:
1
AN XY:
135666
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
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:
0.0000265
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000137
AC:
20
AN:
1461730
Hom.:
0
Cov.:
31
AF XY:
0.0000151
AC XY:
11
AN XY:
727164
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
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:
0.0000180
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
AF:
0.0000328
AC:
5
AN:
152218
Hom.:
0
Cov.:
33
AF XY:
0.0000538
AC XY:
4
AN XY:
74352
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:
0.0000735
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.0000387
Hom.:
0
Bravo
AF:
0.0000378
TwinsUK
AF:
0.000270
AC:
1
ALSPAC
AF:
0.00
AC:
0
ExAC
AF:
0.0000165
AC:
2

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 submitterclinical testingAmbry GeneticsDec 06, 2022The c.436C>A (p.L146I) alteration is located in exon 3 (coding exon 2) of the STEAP3 gene. This alteration results from a C to A substitution at nucleotide position 436, causing the leucine (L) at amino acid position 146 to be replaced by an isoleucine (I). 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
0.095
BayesDel_addAF
Benign
-0.28
T
BayesDel_noAF
Benign
-0.57
CADD
Pathogenic
26
DANN
Uncertain
0.99
DEOGEN2
Benign
0.16
.;T;.;T
Eigen
Uncertain
0.23
Eigen_PC
Uncertain
0.28
FATHMM_MKL
Uncertain
0.92
D
LIST_S2
Benign
0.85
T;.;T;T
M_CAP
Benign
0.0094
T
MetaRNN
Benign
0.19
T;T;T;T
MetaSVM
Benign
-0.96
T
MutationAssessor
Uncertain
2.5
.;M;.;M
MutationTaster
Benign
0.87
N;N;N;N;N;N;N;N
PrimateAI
Uncertain
0.56
T
PROVEAN
Benign
-1.5
N;N;N;N
REVEL
Benign
0.087
Sift
Benign
0.041
D;D;D;D
Sift4G
Benign
0.073
T;T;T;T
Polyphen
0.78
P;B;P;B
Vest4
0.33
MutPred
0.59
.;Loss of sheet (P = 0.0104);Loss of sheet (P = 0.0104);Loss of sheet (P = 0.0104);
MVP
0.27
MPC
0.69
ClinPred
0.90
D
GERP RS
4.3
Varity_R
0.32
gMVP
0.27

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.

Other links and lift over

dbSNP: rs753048220; hg19: chr2-120003478; API