Genetic Variant CLEC18A:p.Ala66Val (chr16-69952107-C-T) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PP3_Strong

The NM_001370523.4(CLEC18A):c.197C>T(p.Ala66Val) variant causes a missense change. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000022 ( 0 hom., cov: 12)

Exomes 𝑓: 0.000012 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

CLEC18A
NM_001370523.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.51

Variant links:

Genes affected

CLEC18A (HGNC:30388): (C-type lectin domain family 18 member A) This is one of three closely related paralogous genes on chromosome 16 encoding secreted proteins containing C-type lectin domains. These domains bind to carbohydrates in the presence of calcium, and may be involved in cell adhesion, immune response and apoptosis. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. [provided by RefSeq, Sep 2012]

CLEC18A links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 4 ACMG points.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.955

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CLEC18A	NM_001370523.4 link	c.197C>T	p.Ala66Val	missense_variant	Exon 2 of 12	ENST00000288040.11	NP_001357452.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CLEC18A	ENST00000288040.11 link	c.197C>T	p.Ala66Val	missense_variant	Exon 2 of 12	1	NM_001370523.4	ENSP00000288040.6		A5D8T8-1

Frequencies

GnomAD3 genomes

AF:

0.00

AC:

AN:

89044

Hom.:

Cov.:

FAILED QC

Gnomad AFR

AF:

0.0000913

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

Data not reliable, filtered out with message: AS_VQSR

AF:

0.0000124

AC:

AN:

485410

Hom.:

Cov.:

AF XY:

0.00000802

AC XY:

AN XY:

249312

show subpopulations

Gnomad4 AFR exome

AF:

0.000162

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000248

Gnomad4 FIN exome

AF:

0.0000261

Gnomad4 NFE exome

AF:

0.00000316

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Data not reliable, filtered out with message: AS_VQSR

AF:

0.0000225

AC:

AN:

89044

Hom.:

Cov.:

AF XY:

0.0000485

AC XY:

AN XY:

41252

show subpopulations

Gnomad4 AFR

AF:

0.0000913

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:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000843

Hom.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Oct 04, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.197C>T (p.A66V) alteration is located in exon 3 (coding exon 2) of the CLEC18A gene. This alteration results from a C to T substitution at nucleotide position 197, causing the alanine (A) at amino acid position 66 to be replaced by a valine (V). 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

Uncertain

0.42

BayesDel_addAF

Benign

-0.073

BayesDel_noAF

Benign

-0.34

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.14

T;T;T;T;.

Eigen

Uncertain

0.50

Eigen_PC

Uncertain

0.31

FATHMM_MKL

Uncertain

0.92

LIST_S2

Uncertain

0.88

D;.;.;.;D

M_CAP

Benign

0.068

MetaRNN

Pathogenic

0.95

D;D;D;D;D

MetaSVM

Benign

-0.49

MutationAssessor

Pathogenic

4.1

H;H;H;H;.

PrimateAI

Pathogenic

0.90

PROVEAN

Uncertain

-3.5

.;D;D;D;D

REVEL

Uncertain

0.35

Sift

Uncertain

0.0010

.;D;D;D;D

Sift4G

Uncertain

0.0040

D;D;D;D;D

Polyphen

1.0

D;D;D;D;D

Vest4

0.66

MutPred

0.92

Loss of disorder (P = 0.0533);Loss of disorder (P = 0.0533);Loss of disorder (P = 0.0533);Loss of disorder (P = 0.0533);Loss of disorder (P = 0.0533);

MVP

0.39

MPC

3.4

ClinPred

1.0

GERP RS

2.5

Varity_R

0.53

gMVP

0.54

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

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