3-55992142-C-T

Variant names:

• chr3-55992142-C-T
• NM_015576.3:c.2170G>A

Variant summary

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

The NM_015576.3(ERC2):​c.2170G>A​(p.Ala724Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 12/21 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: 2.47

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=0.16875672).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ERC2	NM_015576.3	c.2170G>A	p.Ala724Thr	missense_variant	Exon 11 of 18	ENST00000288221.11	NP_056391.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ERC2	ENST00000288221.11	c.2170G>A	p.Ala724Thr	missense_variant	Exon 11 of 18	1	NM_015576.3	ENSP00000288221.6
ERC2	ENST00000460849.5	n.2170G>A		non_coding_transcript_exon_variant	Exon 11 of 19	1		ENSP00000417445.1
ERC2	ENST00000492584.3	c.2206G>A	p.Ala736Thr	missense_variant	Exon 12 of 18	5		ENSP00000417280.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Mar 07, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.2170G>A (p.A724T) alteration is located in exon 11 (coding exon 10) of the ERC2 gene. This alteration results from a G to A substitution at nucleotide position 2170, causing the alanine (A) at amino acid position 724 to be replaced by a threonine (T). 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	0.080
BayesDel_addAF	Benign	-0.20	T
BayesDel_noAF	Benign	-0.53
CADD	Uncertain	23
DANN	Uncertain	1.0
DEOGEN2	Benign	0.096	T;T
Eigen	Benign	-0.068
Eigen_PC	Benign	0.13
FATHMM_MKL	Uncertain	0.87	D
LIST_S2	Uncertain	0.92	.;D
M_CAP	Benign	0.0076	T
MetaRNN	Benign	0.17	T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.1	L;L
PrimateAI	Uncertain	0.68	T
PROVEAN	Benign	-1.1	N;.
REVEL	Benign	0.083
Sift	Benign	0.24	T;.
Sift4G	Benign	0.082	T;T
Polyphen		0.0030	B;B
Vest4		0.27
MutPred		0.38		Gain of phosphorylation at A724 (P = 0.0357);Gain of phosphorylation at A724 (P = 0.0357);
MVP		0.15
MPC		0.35
ClinPred		0.82	D
GERP RS		5.7
Varity_R		0.17
gMVP		0.54

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr3-56026170;