1-26039261-G-C

Position:

• chr1-26039261-G-C

Variant summary

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

The NM_001004434.3(SLC30A2):​c.1018C>G​(p.Arg340Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: SLC30A2 NM_001004434.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.876

Genes affected

SLC30A2 (HGNC:11013): (solute carrier family 30 member 2) The protein encoded by this gene is a zinc transporter that acts as a homodimer. The encoded protein plays a role in secreting zinc into breast milk. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Aug 2015]

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=0.22779608).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SLC30A2	NM_001004434.3	c.1018C>G	p.Arg340Gly	missense_variant	8/8	ENST00000374276.4
SLC30A2	NM_032513.5	c.871C>G	p.Arg291Gly	missense_variant	7/7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SLC30A2	ENST00000374276.4	c.1018C>G	p.Arg340Gly	missense_variant	8/8	1	NM_001004434.3	P1
SLC30A2	ENST00000374278.7	c.871C>G	p.Arg291Gly	missense_variant	7/7	1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Inborn genetic diseases Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 09, 2023

The c.1018C>G (p.R340G) alteration is located in exon 8 (coding exon 8) of the SLC30A2 gene. This alteration results from a C to G substitution at nucleotide position 1018, causing the arginine (R) at amino acid position 340 to be replaced by a glycine (G). 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	0.19
BayesDel_addAF	Benign	-0.097	T
BayesDel_noAF	Benign	-0.38
CADD	Benign	9.3
DANN	Benign	0.79
DEOGEN2	Benign	0.37	T;.
Eigen	Benign	-0.98
Eigen_PC	Benign	-1.1
FATHMM_MKL	Benign	0.22	N
LIST_S2	Benign	0.80	T;T
M_CAP	Benign	0.053	D
MetaRNN	Benign	0.23	T;T
MetaSVM	Benign	-0.88	T
MutationAssessor	Uncertain	2.0	M;.
MutationTaster	Benign	1.0	N;N
PrimateAI	Benign	0.22	T
PROVEAN	Uncertain	-3.1	D;D
REVEL	Benign	0.17
Sift	Benign	0.31	T;T
Sift4G	Benign	0.34	T;T
Polyphen		0.019	B;B
Vest4		0.28
MutPred		0.56		Loss of methylation at R291 (P = 0.0268);.;
MVP		0.21
MPC		0.55
ClinPred		0.11	T
GERP RS		-0.92
Varity_R		0.12
gMVP		0.58

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr1-26365752;