Genetic Variant ESYT3:p.Leu299Met (chr3-138462186-C-A) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_031913.5(ESYT3):c.895C>A(p.Leu299Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000279 in 1,614,234 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. L299V) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00015 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000015 ( 0 hom. )

Consequence

ESYT3
NM_031913.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.361

Variant links:

Genes affected

ESYT3 (HGNC:24295): (extended synaptotagmin 3) Predicted to enable calcium ion binding activity and phospholipid binding activity. Predicted to be involved in endoplasmic reticulum-plasma membrane tethering and lipid transport. Located in endoplasmic reticulum-plasma membrane contact site. Is extrinsic component of cytoplasmic side of plasma membrane; integral component of plasma membrane; and intrinsic component of endoplasmic reticulum membrane. [provided by Alliance of Genome Resources, Apr 2022]

ESYT3 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.13434163).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ESYT3	NM_031913.5 link	c.895C>A	p.Leu299Met	missense_variant	Exon 8 of 23	ENST00000389567.9	NP_114119.2	A0FGR9-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
ESYT3	ENST00000389567.9 link	c.895C>A	p.Leu299Met	missense_variant	Exon 8 of 23	1	NM_031913.5	ENSP00000374218.4	A0FGR9-1
ESYT3	ENST00000289135.4 link	c.895C>A	p.Leu299Met	missense_variant	Exon 8 of 8	5		ENSP00000289135.4	H7BXJ6
ESYT3	ENST00000486831.5 link	n.1108C>A		non_coding_transcript_exon_variant	Exon 8 of 22	5
ESYT3	ENST00000490835.5 link	n.895C>A		non_coding_transcript_exon_variant	Exon 8 of 18	2		ENSP00000417388.1	A0FGR9-2

Frequencies

GnomAD3 genomes

AF:

0.000151

AC:

AN:

152228

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000531

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

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

GnomAD3 exomes

AF:

0.0000478

AC:

AN:

251256

Hom.:

AF XY:

0.0000442

AC XY:

AN XY:

135826

show subpopulations

Gnomad AFR exome

AF:

0.000554

Gnomad AMR exome

AF:

0.0000289

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:

0.00000881

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.0000150

AC:

AN:

1461888

Hom.:

Cov.:

AF XY:

0.0000124

AC XY:

AN XY:

727244

show subpopulations

Gnomad4 AFR exome

AF:

0.000508

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:

8.99e-7

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.000151

AC:

AN:

152346

Hom.:

Cov.:

AF XY:

0.000134

AC XY:

AN XY:

74504

show subpopulations

Gnomad4 AFR

AF:

0.000529

Gnomad4 AMR

AF:

0.0000654

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:

0.0000329

Hom.:

Bravo

AF:

0.000155

ESP6500AA

AF:

0.000454

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000576

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Sep 03, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.895C>A (p.L299M) alteration is located in exon 8 (coding exon 8) of the ESYT3 gene. This alteration results from a C to A substitution at nucleotide position 895, causing the leucine (L) at amino acid position 299 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

0.17

BayesDel_addAF

Benign

-0.27

BayesDel_noAF

Benign

-0.27

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.023

T;.

Eigen

Benign

0.19

Eigen_PC

Benign

0.050

FATHMM_MKL

Benign

0.24

LIST_S2

Benign

0.64

T;T

M_CAP

Benign

0.054

MetaRNN

Benign

0.13

T;T

MetaSVM

Uncertain

0.49

MutationAssessor

Benign

1.6

L;.

PrimateAI

Benign

0.47

PROVEAN

Benign

-1.3

N;N

REVEL

Uncertain

0.36

Sift

Benign

0.20

T;T

Sift4G

Uncertain

0.043

D;T

Polyphen

1.0

D;.

Vest4

0.33

MVP

0.84

MPC

0.62

ClinPred

0.14

GERP RS

2.8

Varity_R

0.19

gMVP

0.53

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