16-67942948-C-T

Variant names:

Variant summary

Our verdict is Benign. The variant received -16 ACMG points: 0P and 16B. BP6_Very_StrongBS1BS2

The NM_000229.2(LCAT):c.340G>A(p.Val114Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000386 in 1,613,856 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V114L) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0016 ( 2 hom., cov: 32)

Exomes 𝑓: 0.00026 ( 1 hom. )

Consequence

LCAT
NM_000229.2 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:4

Conservation

PhyloP100: 0.147

Publications

10 publications found

Variant links:

Genes affected

LCAT (HGNC:6522): (lecithin-cholesterol acyltransferase) This gene encodes the extracellular cholesterol esterifying enzyme, lecithin-cholesterol acyltransferase. The esterification of cholesterol is required for cholesterol transport. Mutations in this gene have been found to cause fish-eye disease as well as LCAT deficiency. [provided by RefSeq, Jul 2008]

LCAT Gene-Disease associations (from GenCC):

fish eye disease
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), G2P, Orphanet
LCAT deficiency
Inheritance: AR Classification: DEFINITIVE Submitted by: Ambry Genetics
Norum disease
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

LCAT links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -16 ACMG points.

BP6

Variant 16-67942948-C-T is Benign according to our data. Variant chr16-67942948-C-T is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 885597.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00158 (241/152310) while in subpopulation AFR AF = 0.00496 (206/41570). AF 95% confidence interval is 0.0044. There are 2 homozygotes in GnomAd4. There are 133 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 2 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
LCAT	NM_000229.2 link	c.340G>A	p.Val114Met	missense_variant	Exon 3 of 6	ENST00000264005.10	NP_000220.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
LCAT	ENST00000264005.10 link	c.340G>A	p.Val114Met	missense_variant	Exon 3 of 6	1	NM_000229.2	ENSP00000264005.5

Frequencies

GnomAD3 genomes

AF:

0.00158

AC:

240

AN:

152192

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00495

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000785

Gnomad ASJ

AF:

0.00144

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000206

Gnomad OTH

AF:

0.00191

GnomAD2 exomes

AF:

0.000502

AC:

126

AN:

251132

AF XY:

0.000405

show subpopulations

Gnomad AFR exome

AF:

0.00443

Gnomad AMR exome

AF:

0.000579

Gnomad ASJ exome

AF:

0.000795

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000202

Gnomad OTH exome

AF:

0.000326

GnomAD4 exome

AF:

0.000261

AC:

382

AN:

1461546

Hom.:

Cov.:

AF XY:

0.000260

AC XY:

189

AN XY:

727076

show subpopulations

African (AFR)

AF:

0.00370

AC:

124

AN:

33480

American (AMR)

AF:

0.000604

AC:

AN:

44714

Ashkenazi Jewish (ASJ)

AF:

0.00130

AC:

AN:

26128

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000464

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53142

Middle Eastern (MID)

AF:

0.000693

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.000132

AC:

147

AN:

1111966

Other (OTH)

AF:

0.000695

AC:

AN:

60390

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.484

Heterozygous variant carriers

103

129

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00158

AC:

241

AN:

152310

Hom.:

Cov.:

AF XY:

0.00179

AC XY:

133

AN XY:

74478

show subpopulations

African (AFR)

AF:

0.00496

AC:

206

AN:

41570

American (AMR)

AF:

0.000784

AC:

AN:

15306

Ashkenazi Jewish (ASJ)

AF:

0.00144

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5178

South Asian (SAS)

AF:

0.00

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10624

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000206

AC:

AN:

68014

Other (OTH)

AF:

0.00189

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.506

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000438

Hom.:

Bravo

AF:

0.00155

ESP6500AA

AF:

0.00227

AC:

ESP6500EA

AF:

0.000233

AC:

ExAC

AF:

0.000601

AC:

EpiCase

AF:

0.000218

EpiControl

AF:

0.000296

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:4

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

LCAT deficiency

Benign:1

Apr 28, 2017

Illumina Laboratory Services, Illumina

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). Publications were found based on this search. The evidence from the literature, in combination with allele frequency data from public databases where available, was sufficient to rule this variant out of causing disease. Therefore, this variant is classified as benign. -

not provided

Benign:1

Oct 12, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Norum disease;C0342895:Fish-eye disease

Benign:1

Apr 07, 2022

Fulgent Genetics, Fulgent Genetics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Cardiovascular phenotype

Benign:1

May 10, 2021

Ambry Genetics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.12

BayesDel_addAF

Benign

-0.32

BayesDel_noAF

Benign

-0.23

CADD

Benign

(source)

DANN

Benign

0.80

DEOGEN2

Uncertain

0.52

D;T

Eigen

Benign

-1.2

Eigen_PC

Benign

-1.2

FATHMM_MKL

Benign

0.59

LIST_S2

Uncertain

0.90

D;D

M_CAP

Pathogenic

0.35

MetaRNN

Benign

0.015

T;T

MetaSVM

Benign

-0.39

MutationAssessor

Benign

-0.14

N;.

PhyloP100

0.15

PrimateAI

Benign

0.39

PROVEAN

Benign

-0.77

N;.

REVEL

Pathogenic

0.69

Sift

Benign

0.19

T;.

Sift4G

Benign

0.41

T;T

Polyphen

0.0040

B;.

Vest4

0.63

MVP

0.67

MPC

0.41

ClinPred

0.00088

GERP RS

-0.54

PromoterAI

-0.0016

Neutral

(source)

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.17

gMVP

0.53

Mutation Taster

=31/69

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.25

Details are displayed if max score is > 0.2

DS_AG_spliceai

0.25

Position offset: -24

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over