chr11-47410117-G-T

Position:

• chr11-47410117-G-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001128225.3(SLC39A13):​c.23G>T​(p.Gly8Val) variant causes a missense change. The variant allele was found at a frequency of 0.00000479 in 1,460,984 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 (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G8S) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000048 (0 hom.)
• Consequence: SLC39A13 NM_001128225.3 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 4.73

Genes affected

SLC39A13 (HGNC:20859): (solute carrier family 39 member 13) This gene encodes a member of the LIV-1 subfamily of the ZIP transporter family. The encoded transmembrane protein functions as a zinc transporter. Mutations in this gene have been associated with the spondylocheiro dysplastic form of Ehlers-Danlos syndrome. Alternate transcript variants have been found for this gene. [provided by RefSeq, Jan 2016]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.17992073).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SLC39A13	NM_001128225.3	c.23G>T	p.Gly8Val	missense_variant	2/10	ENST00000362021.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SLC39A13	ENST00000362021.9	c.23G>T	p.Gly8Val	missense_variant	2/10	1	NM_001128225.3	P4

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD3 exomes AF: 0.0000402 AC: 10 AN: 248586 Hom.: 0 AF XY: 0.0000444 AC XY: 6 AN XY: 135012

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.000545

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000479 AC: 7 AN: 1460984 Hom.: 0 Cov.: 30 AF XY: 0.00000413 AC XY: 3 AN XY: 726820

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.000176

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

Bravo AF: 0.0000227

ExAC AF: 0.0000413 AC: 5

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Inborn genetic diseases Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 03, 2023

The c.23G>T (p.G8V) alteration is located in exon 2 (coding exon 1) of the SLC39A13 gene. This alteration results from a G to T substitution at nucleotide position 23, causing the glycine (G) at amino acid position 8 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Ehlers-Danlos syndrome, spondylocheirodysplastic type Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Aug 14, 2021

This sequence change replaces glycine with valine at codon 8 of the SLC39A13 protein (p.Gly8Val). The glycine residue is weakly conserved and there is a moderate physicochemical difference between glycine and valine. This variant is present in population databases (rs779570378, ExAC 0.06%). This variant has not been reported in the literature in individuals affected with SLC39A13-related conditions. 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: "Not Available"; Align-GVGD: "Class C0"). 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	0.11
BayesDel_addAF	Benign	-0.039	T
BayesDel_noAF	Uncertain	0.060
CADD	Benign	23
DANN	Uncertain	0.99
DEOGEN2	Benign	0.021	T;T;.;T;T;.;.;.;T
Eigen	Uncertain	0.53
Eigen_PC	Uncertain	0.56
FATHMM_MKL	Uncertain	0.91	D
LIST_S2	Uncertain	0.93	D;D;D;D;D;D;D;D;D
M_CAP	Uncertain	0.085	D
MetaRNN	Benign	0.18	T;T;T;T;T;T;T;T;T
MetaSVM	Uncertain	-0.043	T
MutationAssessor	Benign	0.97	.;.;.;.;L;L;.;.;.
MutationTaster	Benign	1.0	D;D;D;D;D
PrimateAI	Benign	0.48	T
PROVEAN	Benign	-1.8	N;N;N;N;N;N;N;N;N
REVEL	Benign	0.24
Sift	Pathogenic	0.0	D;D;D;D;D;D;D;D;D
Sift4G	Pathogenic	0.0	D;D;D;D;D;D;D;D;D
Polyphen		0.99, 1.0, 1.0	.;.;.;.;D;D;.;.;D
Vest4		0.34
MutPred		0.34		Loss of relative solvent accessibility (P = 0.0071);Loss of relative solvent accessibility (P = 0.0071);Loss of relative solvent accessibility (P = 0.0071);Loss of relative solvent accessibility (P = 0.0071);Loss of relative solvent accessibility (P = 0.0071);Loss of relative solvent accessibility (P = 0.0071);Loss of relative solvent accessibility (P = 0.0071);Loss of relative solvent accessibility (P = 0.0071);Loss of relative solvent accessibility (P = 0.0071);
MVP		0.72
MPC		0.54
ClinPred		0.22	T
GERP RS		5.2
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.0
Varity_R		0.39
gMVP		0.83

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

Other links and lift over

dbSNP: rs779570378; hg19: chr11-47431668;