Genetic Variant SLC6A19:p.Arg14Pro (chr5-1201691-G-C) – ACMG Classification: Uncertain_significance (3 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2PP3

The NM_001003841.3(SLC6A19):c.41G>C(p.Arg14Pro) variant causes a missense change. The variant allele was found at a frequency of 0.000000686 in 1,458,376 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic 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. R14Q) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 34)

Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

SLC6A19
NM_001003841.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 6.42

Publications

7 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: G2P, Orphanet, Labcorp Genetics (formerly Invitae), ClinGen

SLC6A19 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.779

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SLC6A19	NM_001003841.3 link	c.41G>C	p.Arg14Pro	missense_variant	Exon 1 of 12	ENST00000304460.11	NP_001003841.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SLC6A19	ENST00000304460.11 link	c.41G>C	p.Arg14Pro	missense_variant	Exon 1 of 12	1	NM_001003841.3	ENSP00000305302.10
SLC6A19	ENST00000515652.5 link	n.41G>C		non_coding_transcript_exon_variant	Exon 1 of 11	2		ENSP00000425701.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000407

AC:

AN:

245624

AF XY:

0.00000747

show subpopulations

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:

0.00000899

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.86e-7

AC:

AN:

1458376

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

725654

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33460

American (AMR)

AF:

0.00

AC:

AN:

44684

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26102

East Asian (EAS)

AF:

0.00

AC:

AN:

39666

South Asian (SAS)

AF:

0.00

AC:

AN:

86196

European-Finnish (FIN)

AF:

0.00

AC:

AN:

50524

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5654

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111780

Other (OTH)

AF:

0.00

AC:

AN:

60310

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.88

BayesDel_addAF

Pathogenic

0.28

BayesDel_noAF

Pathogenic

0.17

CADD

Uncertain

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.18

Eigen

Uncertain

0.41

Eigen_PC

Uncertain

0.35

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.94

M_CAP

Benign

0.081

MetaRNN

Pathogenic

0.78

MetaSVM

Uncertain

-0.12

MutationAssessor

Uncertain

2.4

PhyloP100

6.4

PrimateAI

Uncertain

0.65

PROVEAN

Benign

-1.7

REVEL

Uncertain

0.48

Sift

Uncertain

0.0090

Sift4G

Benign

0.25

Polyphen

1.0

Vest4

0.75

MutPred

0.43

Loss of stability (P = 0.041);

MVP

0.86

MPC

0.94

ClinPred

0.92

GERP RS

4.0

PromoterAI

-0.0017

Neutral

(source)

Varity_R

0.65

gMVP

0.84

Mutation Taster

=39/61

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over