11-2909578-C-A

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP3

The NM_002555.6(SLC22A18):c.404C>A(p.Ala135Asp) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000655 in 1,527,384 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 predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000058 ( 0 hom. )

Consequence

SLC22A18
NM_002555.6 missense, splice_region

Scores

Splicing: ADA: 0.007268

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.610

Variant links:

Genes affected

SLC22A18 (HGNC:10964): (solute carrier family 22 member 18) This gene is one of several tumor-suppressing subtransferable fragments located in the imprinted gene domain of 11p15.5, an important tumor-suppressor gene region. Alterations in this region have been associated with the Beckwith-Wiedemann syndrome, Wilms tumor, rhabdomyosarcoma, adrenocortical carcinoma, and lung, ovarian, and breast cancer. This gene is imprinted, with preferential expression from the maternal allele. Mutations in this gene have been found in Wilms' tumor and lung cancer. This protein may act as a transporter of organic cations, and have a role in the transport of chloroquine and quinidine-related compounds in kidney. Several alternatively spliced transcript variants encoding different isoforms have been described. [provided by RefSeq, Oct 2015]

SLC22A18 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.82

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SLC22A18	NM_002555.6 linkuse as main transcript	c.404C>A	p.Ala135Asp	missense_variant, splice_region_variant	5/11	ENST00000649076.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SLC22A18	ENST00000649076.2 linkuse as main transcript	c.404C>A	p.Ala135Asp	missense_variant, splice_region_variant	5/11		NM_002555.6	P1

Frequencies

GnomAD3 genomes

AF:

0.0000132

AC:

AN:

152040

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:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000582

AC:

AN:

1375344

Hom.:

Cov.:

AF XY:

0.00000295

AC XY:

AN XY:

678626

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000744

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000132

AC:

AN:

152040

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74272

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000712

Hom.:

Bravo

AF:

0.0000227

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Dec 15, 2023

The c.404C>A (p.A135D) alteration is located in exon 5 (coding exon 4) of the SLC22A18 gene. This alteration results from a C to A substitution at nucleotide position 404, causing the alanine (A) at amino acid position 135 to be replaced by an aspartic acid (D). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.96

BayesDel_addAF

Uncertain

0.12

BayesDel_noAF

Uncertain

-0.070

Cadd

Benign

Dann

Uncertain

0.99

DEOGEN2

Uncertain

0.46

T;T;T;T

Eigen

Benign

0.047

Eigen_PC

Benign

-0.13

FATHMM_MKL

Benign

0.22

M_CAP

Benign

0.080

MetaRNN

Pathogenic

0.82

D;D;D;D

MetaSVM

Benign

-0.85

MutationAssessor

Uncertain

2.5

M;M;M;M

MutationTaster

Benign

1.0

D;N;N;N

PrimateAI

Pathogenic

0.81

PROVEAN

Benign

-2.3

N;N;.;N

REVEL

Uncertain

0.34

Sift

Uncertain

0.0040

D;D;.;D

Sift4G

Uncertain

0.010

D;D;.;D

Polyphen

0.99

D;D;D;D

Vest4

0.77

MutPred

0.77

Gain of relative solvent accessibility (P = 0.1571);Gain of relative solvent accessibility (P = 0.1571);Gain of relative solvent accessibility (P = 0.1571);Gain of relative solvent accessibility (P = 0.1571);

MVP

0.78

MPC

0.81

ClinPred

0.81

GERP RS

1.4

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.2

Varity_R

0.80

gMVP

0.91

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.0073

dbscSNV1_RF

Benign

0.16

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

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

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over