Genetic Variant SLC28A1:p.Met24Leu (chr15-84887830-A-T) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_004213.5(SLC28A1):c.70A>T(p.Met24Leu) 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 152,118 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 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 nucleotide change resulting in the same amino acid substitution has been previously reported as Uncertain significance in ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. M24K) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Consequence

SLC28A1
NM_004213.5 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.265

Publications

1 publications found

Variant links:

Genes affected

SLC28A1 (HGNC:11001): (solute carrier family 28 member 1) Enables azole transmembrane transporter activity; cytidine transmembrane transporter activity; and uridine transmembrane transporter activity. Involved in azole transmembrane transport; nucleoside transport; and pyrimidine-containing compound transmembrane transport. Located in cytosol; nuclear speck; and plasma membrane. [provided by Alliance of Genome Resources, Apr 2022]

SLC28A1 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.02434221).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SLC28A1	NM_004213.5 link	c.70A>T	p.Met24Leu	missense_variant	Exon 3 of 19	ENST00000394573.6	NP_004204.3	O00337-1B7Z3L5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
SLC28A1	ENST00000394573.6 link	c.70A>T	p.Met24Leu	missense_variant	Exon 3 of 19	1	NM_004213.5	ENSP00000378074.1	O00337-1
SLC28A1	ENST00000286749.3 link	c.70A>T	p.Met24Leu	missense_variant	Exon 2 of 18	1		ENSP00000286749.3	O00337-1
SLC28A1	ENST00000338602.6 link	c.70A>T	p.Met24Leu	missense_variant	Exon 3 of 7	1		ENSP00000341629.2	O00337-2
SLC28A1	ENST00000538177.5 link	c.70A>T	p.Met24Leu	missense_variant	Exon 2 of 15	2		ENSP00000443752.1	B7Z3L6

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152118

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000387

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

GnomAD2 exomes

AF:

0.00000398

AC:

AN:

251474

AF XY:

0.00

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

Cov.:

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152118

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74298

show subpopulations

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

African (AFR)

AF:

0.00

AC:

AN:

41420

American (AMR)

AF:

0.00

AC:

AN:

15290

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.000387

AC:

AN:

5166

South Asian (SAS)

AF:

0.00

AC:

AN:

4816

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68016

Other (OTH)

AF:

0.00

AC:

AN:

2092

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0.029673), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.400

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

ExAC

AF:

0.00000824

AC:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.099

BayesDel_addAF

Benign

-0.48

BayesDel_noAF

Benign

-0.76

CADD

Benign

0.38

(source)

DANN

Benign

0.44

DEOGEN2

Benign

0.0085

.;T;T;T

Eigen

Benign

-1.2

Eigen_PC

Benign

-1.3

FATHMM_MKL

Benign

0.016

LIST_S2

Benign

0.52

T;T;T;.

M_CAP

Benign

0.0024

MetaRNN

Benign

0.024

T;T;T;T

MetaSVM

Benign

-1.0

PhyloP100

-0.27

PrimateAI

Benign

0.30

PROVEAN

Benign

-0.46

N;N;N;N

REVEL

Benign

0.041

Sift

Benign

0.57

T;T;T;T

Sift4G

Benign

0.41

T;T;T;T

Polyphen

0.063

B;B;B;B

Vest4

0.18

MutPred

0.17

Loss of methylation at K19 (P = 0.0776);Loss of methylation at K19 (P = 0.0776);Loss of methylation at K19 (P = 0.0776);Loss of methylation at K19 (P = 0.0776);

MVP

0.061

MPC

0.078

ClinPred

0.044

GERP RS

-1.3

Varity_R

0.058

gMVP

0.26

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.070

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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15-84887830-A-T

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over