14-23131499-C-A

Variant names:

• chr14-23131499-C-A
• rs760437691
• NM_012244.4:c.1075G>T

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_012244.4(SLC7A8):​c.1075G>T​(p.Val359Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000686 in 1,457,258 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 9/15 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V359M) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: SLC7A8 NM_012244.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.28
• Publications: 2 publications found

Genes affected

SLC7A8 (HGNC:11066): (solute carrier family 7 member 8) Enables several functions, including neutral amino acid transmembrane transporter activity; thyroid hormone transmembrane transporter activity; and toxin transmembrane transporter activity. Involved in L-alanine import across plasma membrane; L-leucine import across plasma membrane; and thyroid hormone transport. Located in plasma membrane. Part of basolateral plasma membrane and microvillus membrane. [provided by Alliance of Genome Resources, Apr 2022]

ENSG00000295888 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.18144277).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_012244.4. 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
	SLC7A8	NM_012244.4	MANE Select	c.1075G>T	p.Val359Leu	missense	Exon 8 of 11	NP_036376.2
	SLC7A8	NM_001267036.1		c.760G>T	p.Val254Leu	missense	Exon 6 of 9	NP_001253965.1	Q9UHI5-4
	SLC7A8	NM_182728.3		c.466G>T	p.Val156Leu	missense	Exon 6 of 9	NP_877392.1	Q9UHI5-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SLC7A8	ENST00000316902.12	TSL:1 MANE Select	c.1075G>T	p.Val359Leu	missense	Exon 8 of 11	ENSP00000320378.7	Q9UHI5-1
	SLC7A8	ENST00000453702.5	TSL:1	c.466G>T	p.Val156Leu	missense	Exon 6 of 9	ENSP00000391577.1	Q9UHI5-2
	SLC7A8	ENST00000469263.5	TSL:1	c.789-4156G>T		intron	N/A	ENSP00000435114.1	E9PLV9

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00000405 AC: 1 AN: 246978 AF XY: 0.00

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 FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000891

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 6.86e-7 AC: 1 AN: 1457258 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 724952

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 33308

American (AMR) AF: 0.00 AC: 0 AN: 43830

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25994

East Asian (EAS) AF: 0.00 AC: 0 AN: 39212

South Asian (SAS) AF: 0.00 AC: 0 AN: 85634

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53276

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5750

European-Non Finnish (NFE) AF: 9.01e-7 AC: 1 AN: 1110100

Other (OTH) AF: 0.00 AC: 0 AN: 60154

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Cov.: 32

Alfa AF: 0.00000460 Hom.: 0

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.16
BayesDel_addAF	Uncertain	0.14	D
BayesDel_noAF	Benign	-0.21
CADD	Benign	22
DANN	Uncertain	0.99
DEOGEN2	Benign	0.011	T
Eigen	Benign	-0.25
Eigen_PC	Benign	-0.12
FATHMM_MKL	Benign	0.71	D
LIST_S2	Benign	0.38	T
M_CAP	Uncertain	0.12	D
MetaRNN	Benign	0.18	T
MetaSVM	Uncertain	-0.20	T
PhyloP100		1.3
Sift4G	Benign	0.22	T
Vest4		0.41
MVP		0.55
ClinPred		0.25	T
GERP RS		2.7
Varity_R		0.11
Mutation Taster		=93/7	polymorphism

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: rs760437691; hg19: chr14-23600708;