Genetic Variant CES1:p.Val166Met (chr16-55823593-C-T) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_001025195.2(CES1):c.496G>A(p.Val166Met) variant causes a missense change. The variant allele was found at a frequency of 0.0000131 in 152,220 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 39)

Exomes 𝑓: 0.0000027 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

CES1
NM_001025195.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.85

Variant links:

Genes affected

CES1 (HGNC:1863): (carboxylesterase 1) This gene encodes a member of the carboxylesterase large family. The family members are responsible for the hydrolysis or transesterification of various xenobiotics, such as cocaine and heroin, and endogenous substrates with ester, thioester, or amide bonds. They may participate in fatty acyl and cholesterol ester metabolism, and may play a role in the blood-brain barrier system. This enzyme is the major liver enzyme and functions in liver drug clearance. Mutations of this gene cause carboxylesterase 1 deficiency. Three transcript variants encoding three different isoforms have been found for this gene. [provided by RefSeq, Jun 2010]

CES1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CES1	NM_001025195.2 link	c.496G>A	p.Val166Met	missense_variant	Exon 4 of 14	ENST00000360526.8	NP_001020366.1	P23141-2
CES1	NM_001025194.2 link	c.493G>A	p.Val165Met	missense_variant	Exon 4 of 14		NP_001020365.1	P23141-1
CES1	NM_001266.5 link	c.493G>A	p.Val165Met	missense_variant	Exon 4 of 14		NP_001257.4	P23141-3
CES1	XM_005255774.3 link	c.496G>A	p.Val166Met	missense_variant	Exon 4 of 14		XP_005255831.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CES1	ENST00000360526.8 link	c.496G>A	p.Val166Met	missense_variant	Exon 4 of 14	1	NM_001025195.2	ENSP00000353720.4		P23141-2

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152220

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

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:

0.00000274

AC:

AN:

1461656

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

727142

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000447

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:

0.00

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152220

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74372

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000131

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

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Dec 18, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.493G>A (p.V165M) alteration is located in exon 4 (coding exon 4) of the CES1 gene. This alteration results from a G to A substitution at nucleotide position 493, causing the valine (V) at amino acid position 165 to be replaced by a methionine (M). 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

0.32

BayesDel_addAF

Benign

-0.19

BayesDel_noAF

Benign

-0.34

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.63

.;.;D

Eigen

Uncertain

0.38

Eigen_PC

Benign

0.22

FATHMM_MKL

Benign

0.73

LIST_S2

Uncertain

0.91

D;D;D

M_CAP

Benign

0.010

MetaRNN

Uncertain

0.56

D;D;D

MetaSVM

Benign

-0.92

MutationAssessor

Pathogenic

3.1

.;M;M

PrimateAI

Uncertain

0.53

PROVEAN

Uncertain

-2.9

D;D;D

REVEL

Uncertain

0.31

Sift

Benign

0.048

D;D;D

Sift4G

Uncertain

0.032

D;D;D

Polyphen

1.0

D;.;D

Vest4

0.61

MutPred

0.74

.;Gain of loop (P = 0.2045);Gain of loop (P = 0.2045);

MVP

0.18

MPC

0.21

ClinPred

0.96

GERP RS

3.1

Varity_R

0.66

gMVP

0.69

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