chr19-32830686-T-C

Variant names:

• chr19-32830686-T-C
• rs2145788754
• NM_014270.5:c.1400-2A>G

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PVS1_Strong PP5_Moderate

The NM_014270.5(SLC7A9):​c.1400-2A>G variant causes a splice acceptor, intron change. The variant allele was found at a frequency of 0.0000459 in 1,461,174 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 3/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Pathogenic (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.000046 (0 hom.)
• Consequence: SLC7A9 NM_014270.5 splice_acceptor, intron
• Scores: Splicing: ADA: 1.000
• Clinical Significance: Pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 7.07
• Publications: 0 publications found

Genes affected

SLC7A9 (HGNC:11067): (solute carrier family 7 member 9) This gene encodes a protein that belongs to a family of light subunits of amino acid transporters. This protein plays a role in the high-affinity and sodium-independent transport of cystine and neutral and dibasic amino acids, and appears to function in the reabsorption of cystine in the kidney tubule. Mutations in this gene cause non-type I cystinuria, a disease that leads to cystine stones in the urinary system due to impaired transport of cystine and dibasic amino acids. Alternate transcript variants, which encode the same protein, have been found for this gene. [provided by RefSeq, Jul 2011]

SLC7A9 Gene-Disease associations (from GenCC):

• cystinuria

  Inheritance: AD, AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), ClinGen, Laboratory for Molecular Medicine
• cystinuria type B

  Inheritance: SD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

• PVS1: Splicing +-2 bp (donor or acceptor) variant, product NOT destroyed by NMD, known LOF gene, truncates exone, which is 0.11885246 fraction of the gene.
• PP5: Variant 19-32830686-T-C is Pathogenic according to our data. Variant chr19-32830686-T-C is described in ClinVar as Pathogenic. ClinVar VariationId is 1323616.Status of the report is criteria_provided_single_submitter, 1 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_014270.5. 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
	SLC7A9	NM_014270.5	MANE Select	c.1400-2A>G		splice_acceptor intron	N/A	NP_055085.1	P82251
	SLC7A9	NM_001126335.2		c.1400-2A>G		splice_acceptor intron	N/A	NP_001119807.1	P82251
	SLC7A9	NM_001243036.2		c.1400-2A>G		splice_acceptor intron	N/A	NP_001229965.1	P82251

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SLC7A9	ENST00000023064.9	TSL:1 MANE Select	c.1400-2A>G		splice_acceptor intron	N/A	ENSP00000023064.3	P82251
	SLC7A9	ENST00000587772.1	TSL:1	c.1400-2A>G		splice_acceptor intron	N/A	ENSP00000468439.1	P82251
	SLC7A9	ENST00000590341.5	TSL:1	c.1400-2A>G		splice_acceptor intron	N/A	ENSP00000464822.1	P82251

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.0000459 AC: 67 AN: 1461174 Hom.: 0 Cov.: 30 AF XY: 0.0000468 AC XY: 34 AN XY: 726962

African (AFR) AF: 0.00 AC: 0 AN: 33458

American (AMR) AF: 0.00 AC: 0 AN: 44722

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26122

East Asian (EAS) AF: 0.00 AC: 0 AN: 39686

South Asian (SAS) AF: 0.00 AC: 0 AN: 86254

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53406

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.0000603 AC: 67 AN: 1111392

Other (OTH) AF: 0.00 AC: 0 AN: 60366

GnomAD4 genome Cov.: 33

ClinVar

ClinVar submissions as Germline

Significance: Pathogenic

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
1	-	-	Cystinuria (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.63	D
BayesDel_noAF	Pathogenic	0.17
CADD	Pathogenic	26
DANN	Uncertain	0.99
Eigen	Pathogenic	1.0
Eigen_PC	Pathogenic	0.85
FATHMM_MKL	Pathogenic	0.98	D
PhyloP100		7.1
GERP RS		5.7
Mutation Taster		=0/100	disease causing

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Pathogenic	1.0
dbscSNV1_RF	Pathogenic	0.91
SpliceAI score (max)		0.99		Details are displayed if max score is > 0.2
DS_AL_spliceai		0.99		Position offset: -2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs2145788754; hg19: chr19-33321592;