14-57209775-A-C

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_006544.4(EXOC5):c.1730T>G(p.Val577Gly) variant causes a missense change. The variant allele was found at a frequency of 0.00000206 in 1,454,774 control chromosomes in the GnomAD database, with no homozygous occurrence. 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: not found (cov: 32)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: EXOC5 NM_006544.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.06

Genes affected

EXOC5 (HGNC:10696): (exocyst complex component 5) 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. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.34321213).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
EXOC5	NM_006544.4	c.1730T>G	p.Val577Gly	missense_variant	17/18	ENST00000621441.5
EXOC5	XM_005267272.4	c.1844T>G	p.Val615Gly	missense_variant	17/18
EXOC5	XM_047430882.1	c.1565T>G	p.Val522Gly	missense_variant	17/18

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
EXOC5	ENST00000621441.5	c.1730T>G	p.Val577Gly	missense_variant	17/18	1	NM_006544.4	P1
EXOC5	ENST00000554011.5	n.1449T>G		non_coding_transcript_exon_variant	7/8	1
EXOC5	ENST00000340918.11	c.1535T>G	p.Val512Gly	missense_variant	16/17	2
EXOC5	ENST00000555148.5	c.*1564T>G		3_prime_UTR_variant, NMD_transcript_variant	17/18	2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000206 AC: 3 AN: 1454774 Hom.: 0 Cov.: 30 AF XY: 0.00 AC XY: 0 AN XY: 723376

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: 0.00000271

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Nov 21, 2022

The c.1730T>G (p.V577G) alteration is located in exon 17 (coding exon 17) of the EXOC5 gene. This alteration results from a T to G substitution at nucleotide position 1730, causing the valine (V) at amino acid position 577 to be replaced by a glycine (G). 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	0.083
BayesDel_addAF	Benign	-0.026	T
BayesDel_noAF	Benign	-0.27
Cadd	Benign	22
Dann	Benign	0.96
DEOGEN2	Benign	0.22	T;T;T
Eigen	Benign	-0.18
Eigen_PC	Benign	0.049
FATHMM_MKL	Uncertain	0.87	D
LIST_S2	Uncertain	0.88	D;D;D
M_CAP	Benign	0.012	T
MetaRNN	Benign	0.34	T;T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.69	N;.;.
MutationTaster	Benign	1.0	D;D
PrimateAI	Uncertain	0.66	T
Sift4G	Benign	0.45	T;T;T
Polyphen		0.017	B;.;B
Vest4		0.49
MutPred		0.74		Loss of stability (P = 0.0241);.;.;
MVP		0.51
MPC		0.59
ClinPred		0.43	T
GERP RS		5.2
Varity_R		0.18
gMVP		0.25

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.14		Details are displayed if max score is > 0.2

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr14-57676493;