chr3-55992223-T-C

Position:

• chr3-55992223-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_015576.3(ERC2):​c.2089A>G​(p.Met697Val) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. 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)
• Consequence: ERC2 NM_015576.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.80

Genes affected

ERC2 (HGNC:31922): (ELKS/RAB6-interacting/CAST family member 2) This gene encodes a protein that belongs to the Rab3-interacting molecule (RIM)-binding protein family. Members of this protein family form part of the cytomatrix at the active zone (CAZ) complex and function as regulators of neurotransmitter release. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Nov 2015]

ACMG classification

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=0.18450776).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ERC2	NM_015576.3	c.2089A>G	p.Met697Val	missense_variant	11/18	ENST00000288221.11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ERC2	ENST00000288221.11	c.2089A>G	p.Met697Val	missense_variant	11/18	1	NM_015576.3	P1
ERC2	ENST00000460849.5	c.2089A>G	p.Met697Val	missense_variant, NMD_transcript_variant	11/19	1
ERC2	ENST00000492584.3	c.2125A>G	p.Met709Val	missense_variant	12/18	5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

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

Feb 14, 2023

The c.2089A>G (p.M697V) alteration is located in exon 11 (coding exon 10) of the ERC2 gene. This alteration results from a A to G substitution at nucleotide position 2089, causing the methionine (M) at amino acid position 697 to be replaced by a valine (V). 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	0.072
BayesDel_addAF	Benign	-0.16	T
BayesDel_noAF	Benign	-0.46
CADD	Benign	21
DANN	Benign	0.95
DEOGEN2	Benign	0.032	T;T
Eigen	Benign	-0.22
Eigen_PC	Benign	-0.033
FATHMM_MKL	Uncertain	0.84	D
M_CAP	Benign	0.0077	T
MetaRNN	Benign	0.18	T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.69	N;N
MutationTaster	Benign	0.98	N
PrimateAI	Uncertain	0.61	T
PROVEAN	Benign	-0.27	N;.
REVEL	Benign	0.082
Sift	Benign	0.12	T;.
Sift4G	Benign	0.32	T;T
Polyphen		0.0040	B;B
Vest4		0.24
MutPred		0.38		Gain of helix (P = 0.2294);Gain of helix (P = 0.2294);
MVP		0.19
MPC		0.37
ClinPred		0.48	T
GERP RS		4.5
Varity_R		0.25
gMVP		0.67

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.060		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: chr3-56026251;