14-22773960-G-C

Variant names:

• chr14-22773960-G-C
• rs386833807
• NM_003982.4:c.1402C>G

Variant summary

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

The NM_003982.4(SLC7A7):​c.1402C>G​(p.Arg468Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000131 in 152,198 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. R468Q) has been classified as Uncertain significance.

• Frequency: Genomes: 𝑓 0.000013 (0 hom., cov: 32)
• Consequence: SLC7A7 NM_003982.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.897
• Publications: 5 publications found

Genes affected

SLC7A7 (HGNC:11065): (solute carrier family 7 member 7) The protein encoded by this gene is the light subunit of a cationic amino acid transporter. This sodium-independent transporter is formed when the light subunit encoded by this gene dimerizes with the heavy subunit transporter protein SLC3A2. This transporter is found in epithelial cell membranes where it transfers cationic and large neutral amino acids from the cell to the extracellular space. Defects in this gene are a cause of lysinuric protein intolerance (LPI). Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2011]

SLC7A7 Gene-Disease associations (from GenCC):

• lysinuric protein intolerance

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: PanelApp Australia, Orphanet, Labcorp Genetics (formerly Invitae), ClinGen, Ambry Genetics

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_003982.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SLC7A7	NM_003982.4	MANE Select	c.1402C>G	p.Arg468Gly	missense	Exon 9 of 10	NP_003973.3
	SLC7A7	NM_001126105.3		c.1402C>G	p.Arg468Gly	missense	Exon 10 of 11	NP_001119577.1
	SLC7A7	NM_001126106.4		c.1402C>G	p.Arg468Gly	missense	Exon 10 of 11	NP_001119578.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SLC7A7	ENST00000674313.1	MANE Select	c.1402C>G	p.Arg468Gly	missense	Exon 9 of 10	ENSP00000501493.1
	SLC7A7	ENST00000397528.8	TSL:1	c.1402C>G	p.Arg468Gly	missense	Exon 10 of 11	ENSP00000380662.4
	SLC7A7	ENST00000397529.6	TSL:1	c.1402C>G	p.Arg468Gly	missense	Exon 9 of 10	ENSP00000380663.2

Frequencies

GnomAD3 genomes AF: 0.0000131 AC: 2 AN: 152198 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000482

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: 0.00

Gnomad OTH AF: 0.00

GnomAD4 exome Cov.: 33

GnomAD4 genome AF: 0.0000131 AC: 2 AN: 152198 Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1 AN XY: 74342

African (AFR) AF: 0.0000482 AC: 2 AN: 41460

American (AMR) AF: 0.00 AC: 0 AN: 15272

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5198

South Asian (SAS) AF: 0.00 AC: 0 AN: 4828

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10610

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68038

Other (OTH) AF: 0.00 AC: 0 AN: 2092

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000756

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.74
BayesDel_addAF	Pathogenic	0.24	D
BayesDel_noAF	Uncertain	0.10
CADD	Benign	21
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.64	D
Eigen	Benign	0.092
Eigen_PC	Benign	0.12
FATHMM_MKL	Uncertain	0.92	D
LIST_S2	Benign	0.85	D
M_CAP	Uncertain	0.11	D
MetaRNN	Uncertain	0.64	D
MetaSVM	Benign	-0.58	T
MutationAssessor	Uncertain	2.8	M
PhyloP100		0.90
PrimateAI	Benign	0.41	T
PROVEAN	Uncertain	-4.0	D
REVEL	Pathogenic	0.66
Sift	Uncertain	0.0010	D
Sift4G	Uncertain	0.0030	D
Polyphen		0.47	P
Vest4		0.73
MutPred		0.58		Loss of methylation at R468 (P = 0.03)
MVP		0.65
MPC		0.57
ClinPred		0.98	D
GERP RS		4.2
Varity_R		0.50
gMVP		0.72
Mutation Taster		=67/33	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		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: rs386833807; hg19: chr14-23243169;