7-133317372-A-G

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_021807.4(EXOC4):c.745A>G(p.Thr249Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000688 in 1,454,506 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000069 ( 0 hom. )

Consequence

EXOC4
NM_021807.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.284

Variant links:

Genes affected

EXOC4 (HGNC:30389): (exocyst complex component 4) The protein encoded by this gene is a component of the exocyst complex, a multiple protein complex essential for targeting exocytic vesicles to specific docking sites on the plasma membrane. Though best characterized in yeast, the component proteins and functions of exocyst complex have been demonstrated to be highly conserved in higher eukaryotes. At least eight components of the exocyst complex, including this protein, are found to interact with the actin cytoskeletal remodeling and vesicle transport machinery. The complex is also essential for the biogenesis of epithelial cell surface polarity. Alternate transcriptional splice variants, encoding different isoforms, have been characterized. [provided by RefSeq, Jul 2008]

EXOC4 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.056117296).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
EXOC4	NM_021807.4 linkuse as main transcript	c.745A>G	p.Thr249Ala	missense_variant	5/18	ENST00000253861.5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
EXOC4	ENST00000253861.5 linkuse as main transcript	c.745A>G	p.Thr249Ala	missense_variant	5/18	1	NM_021807.4	P1	Q96A65-1
EXOC4	ENST00000462055.5 linkuse as main transcript	n.752A>G		non_coding_transcript_exon_variant	5/9	1
EXOC4	ENST00000393161.6 linkuse as main transcript	c.745A>G	p.Thr249Ala	missense_variant	5/10	5			Q96A65-2
EXOC4	ENST00000486013.5 linkuse as main transcript	n.774A>G		non_coding_transcript_exon_variant	5/10	5

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000398

AC:

AN:

251184

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135748

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:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000688

AC:

AN:

1454506

Hom.:

Cov.:

AF XY:

0.00000690

AC XY:

AN XY:

724128

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:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000814

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.00000756

ExAC

AF:

0.00000824

AC:

EpiCase

AF:

0.0000545

EpiControl

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

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 24, 2022

The c.745A>G (p.T249A) alteration is located in exon 5 (coding exon 5) of the EXOC4 gene. This alteration results from a A to G substitution at nucleotide position 745, causing the threonine (T) at amino acid position 249 to be replaced by an alanine (A). 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

0.063

BayesDel_addAF

Benign

-0.23

BayesDel_noAF

Benign

-0.47

Cadd

Benign

7.8

Dann

Benign

0.74

Eigen

Benign

-0.94

Eigen_PC

Benign

-0.90

FATHMM_MKL

Benign

0.38

LIST_S2

Benign

0.59

T;T

M_CAP

Benign

0.0025

MetaRNN

Benign

0.056

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.9

L;L

MutationTaster

Benign

0.77

N;N;N

PrimateAI

Benign

0.32

PROVEAN

Benign

-0.21

N;N

REVEL

Benign

0.052

Sift

Benign

0.75

T;T

Sift4G

Pathogenic

0.0

D;T

Polyphen

0.47

.;P

Vest4

0.084

MutPred

0.33

Loss of phosphorylation at T249 (P = 0.0335);Loss of phosphorylation at T249 (P = 0.0335);

MVP

0.33

MPC

0.13

ClinPred

0.061

GERP RS

-2.2

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.021

gMVP

0.31

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