Genetic Variant CLEC18A:p.Glu27Asp (chr16-69951447-G-C) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_001370523.4(CLEC18A):c.81G>C(p.Glu27Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000040 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00010 ( 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: 0.379

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 Likely_benign. Variant got -2 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.081453204).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CLEC18A	NM_001370523.4 link	c.81G>C	p.Glu27Asp	missense_variant	Exon 1 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.81G>C	p.Glu27Asp	missense_variant	Exon 1 of 12	1	NM_001370523.4	ENSP00000288040.6		A5D8T8-1

Frequencies

GnomAD3 genomes

AF:

0.0000395

AC:

AN:

151710

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

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:

0.0000739

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000260

AC:

AN:

76878

Hom.:

AF XY:

0.0000531

AC XY:

AN XY:

37688

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 SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000652

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

Data not reliable, filtered out with message: AS_VQSR

AF:

0.000102

AC:

149

AN:

1459456

Hom.:

Cov.:

AF XY:

0.0000964

AC XY:

AN XY:

726034

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:

0.000130

Gnomad4 OTH exome

AF:

0.0000831

GnomAD4 genome

Data not reliable, filtered out with message: AS_VQSR

AF:

0.0000395

AC:

AN:

151710

Hom.:

Cov.:

AF XY:

0.0000270

AC XY:

AN XY:

74060

show subpopulations

Gnomad4 AFR

AF:

0.0000241

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:

0.0000739

Gnomad4 OTH

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 08, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.81G>C (p.E27D) alteration is located in exon 2 (coding exon 1) of the CLEC18A gene. This alteration results from a G to C substitution at nucleotide position 81, causing the glutamic acid (E) at amino acid position 27 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

Benign

0.12

BayesDel_addAF

Benign

-0.37

BayesDel_noAF

Benign

-0.58

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.0095

T;T;T;T;.

Eigen

Benign

-0.83

Eigen_PC

Benign

-0.85

FATHMM_MKL

Benign

0.075

LIST_S2

Benign

0.56

T;.;.;.;T

M_CAP

Benign

0.0037

MetaRNN

Benign

0.081

T;T;T;T;T

MetaSVM

Benign

-0.95

MutationAssessor

Benign

1.3

L;L;L;L;.

PrimateAI

Uncertain

0.62

PROVEAN

Benign

-0.90

.;N;N;N;N

REVEL

Benign

0.018

Sift

Benign

0.20

.;T;T;T;T

Sift4G

Benign

0.065

T;T;T;T;T

Polyphen

0.0030

B;B;B;B;B

Vest4

0.15

MutPred

0.32

Loss of loop (P = 0.1242);Loss of loop (P = 0.1242);Loss of loop (P = 0.1242);Loss of loop (P = 0.1242);Loss of loop (P = 0.1242);

MVP

0.27

MPC

1.8

ClinPred

0.035

GERP RS

0.53

Varity_R

0.11

gMVP

0.19

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