chr3-140176014-C-G

Variant names:

• chr3-140176014-C-G
• rs767751508
• NM_022131.3:c.173C>G

Variant summary

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

The NM_022131.3(CLSTN2):​c.173C>G​(p.Thr58Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T58K) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: CLSTN2 NM_022131.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.87

Genes affected

CLSTN2 (HGNC:17448): (calsyntenin 2) Predicted to enable calcium ion binding activity. Predicted to be involved in positive regulation of synapse assembly and positive regulation of synaptic transmission. Predicted to be located in postsynaptic density. Predicted to be active in cell surface; glutamatergic synapse; and postsynaptic membrane. Predicted to be integral component of postsynaptic density membrane. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CLSTN2	NM_022131.3	c.173C>G	p.Thr58Arg	missense_variant	Exon 2 of 17	ENST00000458420.7	NP_071414.2
CLSTN2	XM_017007022.3	c.98C>G	p.Thr33Arg	missense_variant	Exon 2 of 17		XP_016862511.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CLSTN2	ENST00000458420.7	c.173C>G	p.Thr58Arg	missense_variant	Exon 2 of 17	1	NM_022131.3	ENSP00000402460.2
CLSTN2	ENST00000511524.1	n.361C>G		non_coding_transcript_exon_variant	Exon 2 of 11	2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.23
BayesDel_addAF	Benign	-0.086	T
BayesDel_noAF	Benign	-0.36
CADD	Uncertain	24
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.48	T
Eigen	Uncertain	0.36
Eigen_PC	Uncertain	0.43
FATHMM_MKL	Uncertain	0.85	D
LIST_S2	Uncertain	0.90	D
M_CAP	Benign	0.015	T
MetaRNN	Uncertain	0.53	D
MetaSVM	Benign	-0.85	T
MutationAssessor	Benign	1.9	L
PrimateAI	Uncertain	0.75	T
PROVEAN	Uncertain	-3.0	D
REVEL	Benign	0.088
Sift	Uncertain	0.012	D
Sift4G	Uncertain	0.027	D
Polyphen		0.69	P
Vest4		0.61
MutPred		0.42		Loss of sheet (P = 0.1501);
MVP		0.65
MPC		0.44
ClinPred		0.99	D
GERP RS		5.5
Varity_R		0.31
gMVP		0.56

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

Other links and lift over

dbSNP: rs767751508; hg19: chr3-139894856;