NM_018303.6:c.1444-557A>G

Variant names:

• chr6-565486-T-C
• rs7762424
• NM_018303.6:c.1444-557A>G

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_018303.6(EXOC2):​c.1444-557A>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0285 in 152,310 control chromosomes in the GnomAD database, including 163 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.029 (163 hom., cov: 33)
• Consequence: EXOC2 NM_018303.6 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.513
• Publications: 1 publications found

Genes affected

EXOC2 (HGNC:24968): (exocyst complex component 2) The protein encoded by this gene is a component of the exocyst complex, a multi-protein complex essential for the polarized targeting of exocytic vesicles to specific docking sites on the plasma membrane. Though best characterized in yeast, the component proteins and the functions of the 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. This interaction has been shown to mediate filopodia formation in fibroblasts. This protein has been shown to interact with the Ral subfamily of GTPases and thereby mediate exocytosis by tethering vesicles to the plasma membrane. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2012]

EXOC2 Gene-Disease associations (from GenCC):

• complex neurodevelopmental disorder

  Inheritance: AR Classification: LIMITED Submitted by: ClinGen
• neurodevelopmental disorder with dysmorphic facies and cerebellar hypoplasia

  Inheritance: Unknown Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.9).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0813 is higher than 0.05.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_018303.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	EXOC2	NM_018303.6	MANE Select	c.1444-557A>G		intron	N/A	NP_060773.3
	EXOC2	NR_073064.2		n.1770-557A>G		intron	N/A

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	EXOC2	ENST00000230449.9	TSL:1 MANE Select	c.1444-557A>G		intron	N/A	ENSP00000230449.4

Frequencies

GnomAD3 genomes AF: 0.0284 AC: 4329 AN: 152192 Hom.: 161 Cov.: 33

Gnomad AFR AF: 0.0834

Gnomad AMI AF: 0.0132

Gnomad AMR AF: 0.0137

Gnomad ASJ AF: 0.00778

Gnomad EAS AF: 0.000192

Gnomad SAS AF: 0.000620

Gnomad FIN AF: 0.000471

Gnomad MID AF: 0.0158

Gnomad NFE AF: 0.00810

Gnomad OTH AF: 0.0287

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.0285 AC: 4348 AN: 152310 Hom.: 163 Cov.: 33 AF XY: 0.0274 AC XY: 2042 AN XY: 74480

African (AFR) AF: 0.0836 AC: 3475 AN: 41562

American (AMR) AF: 0.0137 AC: 210 AN: 15302

Ashkenazi Jewish (ASJ) AF: 0.00778 AC: 27 AN: 3472

East Asian (EAS) AF: 0.000193 AC: 1 AN: 5192

South Asian (SAS) AF: 0.000414 AC: 2 AN: 4832

European-Finnish (FIN) AF: 0.000471 AC: 5 AN: 10618

Middle Eastern (MID) AF: 0.0170 AC: 5 AN: 294

European-Non Finnish (NFE) AF: 0.00810 AC: 551 AN: 68010

Other (OTH) AF: 0.0284 AC: 60 AN: 2116

Alfa AF: 0.0179 Hom.: 14

Bravo AF: 0.0324

Asia WGS AF: 0.00840 AC: 29 AN: 3468

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.90
CADD	Benign	0.66
DANN	Benign	0.65
PhyloP100		-0.51
Mutation Taster		=100/0	polymorphism (auto)

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

Other links and lift over

dbSNP: rs7762424; hg19: chr6-565486;