Genetic Variant SLC6A19:p.Arg14Gly (chr5-1201690-C-G) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

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

The NM_001003841.3(SLC6A19):c.40C>G(p.Arg14Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000048 in 1,458,432 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. R14Q) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 34)

Exomes 𝑓: 0.0000048 ( 0 hom. )

Consequence

SLC6A19
NM_001003841.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 1.54

Publications

1 publications found

Variant links:

Genes affected

SLC6A19 (HGNC:27960): (solute carrier family 6 member 19) This gene encodes a system B(0) transmembrane protein that actively transports most neutral amino acids across the apical membrane of epithelial cells. Mutations in this gene may result in Hartnup disorder, an inherited disease with symptoms such as pellagra, cerebellar ataxia, and psychosis. The expression and function of B0AT1 (SLC6A19) in intestinal cells depends on the presence of the accessory protein angiotensin-converting enzyme 2 (ACE2) which, among other functions, acts as a chaperone for membrane trafficking of B0AT1. The ACE2 is also the cellular receptor for severe acute respiratory syndrome-coronavirus (SARS-CoV) and for SARS-CoV-2 that is causing the coronavirus 2019 (COVID-19) pandemic [provided by RefSeq, Jul 2020]

SLC6A19 Gene-Disease associations (from GenCC):

Hartnup disease
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, ClinGen, Labcorp Genetics (formerly Invitae), G2P

SLC6A19 links:

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ACMG classification

Classification was made for transcript

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_001003841.3. 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
	SLC6A19	NM_001003841.3	MANE Select	c.40C>G	p.Arg14Gly	missense	Exon 1 of 12	NP_001003841.1	Q695T7

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SLC6A19	ENST00000304460.11	TSL:1 MANE Select	c.40C>G	p.Arg14Gly	missense	Exon 1 of 12	ENSP00000305302.10	Q695T7
	SLC6A19	ENST00000515652.5	TSL:2	n.40C>G		non_coding_transcript_exon	Exon 1 of 11	ENSP00000425701.1	E9PD72

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000480

AC:

AN:

1458432

Hom.:

Cov.:

AF XY:

0.00000413

AC XY:

AN XY:

725660

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33468

American (AMR)

AF:

0.00

AC:

AN:

44682

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26104

East Asian (EAS)

AF:

0.00

AC:

AN:

39670

South Asian (SAS)

AF:

0.00

AC:

AN:

86194

European-Finnish (FIN)

AF:

0.00

AC:

AN:

50524

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5680

European-Non Finnish (NFE)

AF:

0.00000630

AC:

AN:

1111794

Other (OTH)

AF:

0.00

AC:

AN:

60316

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.511

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000251

Hom.:

EpiCase

AF:

0.000109

EpiControl

AF:

0.00

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.59

BayesDel_addAF

Pathogenic

0.23

BayesDel_noAF

Uncertain

0.090

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.15

Eigen

Benign

0.11

Eigen_PC

Benign

0.044

FATHMM_MKL

Uncertain

0.85

LIST_S2

Uncertain

0.94

M_CAP

Benign

0.085

MetaRNN

Uncertain

0.73

MetaSVM

Benign

-0.50

MutationAssessor

Uncertain

2.4

PhyloP100

1.5

PrimateAI

Uncertain

0.61

PROVEAN

Benign

-1.2

REVEL

Uncertain

0.49

Sift

Uncertain

0.0080

Sift4G

Benign

0.13

Polyphen

0.99

Vest4

0.72

MutPred

0.42

Loss of stability (P = 0.0116)

MVP

0.78

MPC

0.84

ClinPred

0.95

GERP RS

3.1

PromoterAI

-0.012

Neutral

(source)

Varity_R

0.42

gMVP

0.77

Mutation Taster

=44/56

disease causing

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over