4-102263056-G-T

Variant names:

• chr4-102263056-G-T
• rs772719183
• NM_001135146.2:c.1371C>A

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 2P and 3B. PM2 BP4_Moderate BP7

The NM_001135146.2(SLC39A8):​c.1371C>A​(p.Ile457Ile) variant causes a synonymous 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. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. I457I) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: SLC39A8 NM_001135146.2 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.264
• Publications: 0 publications found

Genes affected

SLC39A8 (HGNC:20862): (solute carrier family 39 member 8) This gene encodes a member of the SLC39 family of solute-carrier genes, which show structural characteristics of zinc transporters. The encoded protein is glycosylated and found in the plasma membrane and mitochondria, and functions in the cellular import of zinc at the onset of inflammation. It is also thought to be the primary transporter of the toxic cation cadmium, which is found in cigarette smoke. Multiple transcript variants encoding different isoforms have been found for this gene. Additional alternatively spliced transcript variants of this gene have been described, but their full-length nature is not known. [provided by RefSeq, Oct 2008]

SLC39A8 Gene-Disease associations (from GenCC):

• SLC39A8-CDG

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, G2P, Labcorp Genetics (formerly Invitae)
• Leigh syndrome

  Inheritance: AR Classification: LIMITED Submitted by: ClinGen

ACMG classification

Our verdict: Likely_benign. The variant received -1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.43).
• BP7: Synonymous conserved (PhyloP=0.264 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001135146.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SLC39A8	NM_001135146.2	MANE Select	c.1371C>A	p.Ile457Ile	synonymous	Exon 9 of 9	NP_001128618.1	Q9C0K1-1
	SLC39A8	NM_022154.5		c.1371C>A	p.Ile457Ile	synonymous	Exon 8 of 8	NP_071437.3	Q9C0K1-1
	SLC39A8	NM_001135148.2		c.1170C>A	p.Ile390Ile	synonymous	Exon 8 of 8	NP_001128620.1	Q9C0K1-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SLC39A8	ENST00000356736.5	TSL:1 MANE Select	c.1371C>A	p.Ile457Ile	synonymous	Exon 9 of 9	ENSP00000349174.4	Q9C0K1-1
	SLC39A8	ENST00000394833.6	TSL:1	c.1371C>A	p.Ile457Ile	synonymous	Exon 8 of 8	ENSP00000378310.2	Q9C0K1-1
	SLC39A8	ENST00000856304.1		c.1662C>A	p.Ile554Ile	synonymous	Exon 10 of 10	ENSP00000526363.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1453426 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 722584

African (AFR) AF: 0.00 AC: 0 AN: 33204

American (AMR) AF: 0.00 AC: 0 AN: 44130

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25896

East Asian (EAS) AF: 0.00 AC: 0 AN: 39420

South Asian (SAS) AF: 0.00 AC: 0 AN: 84974

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 52942

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5734

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1107106

Other (OTH) AF: 0.00 AC: 0 AN: 60020

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.43
CADD	Benign	0.65
DANN	Benign	0.77
PhyloP100		0.26

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

Other links and lift over

dbSNP: rs772719183; hg19: chr4-103184213;