Genetic Variant NM_022131.3:c.372C>A (chr3-140403768-C-A) – ACMG Classification: Benign (-18 pts)

Variant summary

Our verdict is Benign. The variant received -18 ACMG points: 0P and 18B. BP4BP6_Very_StrongBP7BS1BS2

The NM_022131.3(CLSTN2):c.372C>A(p.Ile124Ile) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00253 in 1,614,126 control chromosomes in the GnomAD database, including 100 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.013 ( 49 hom., cov: 32)

Exomes 𝑓: 0.0014 ( 51 hom. )

Consequence

CLSTN2
NM_022131.3 synonymous

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: 2.35

Publications

2 publications found

Variant links:

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]

CLSTN2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -18 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.17).

BP6

Variant 3-140403768-C-A is Benign according to our data. Variant chr3-140403768-C-A is described in ClinVar as Benign. ClinVar VariationId is 786022.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=2.35 with no splicing effect.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.0133 (2032/152278) while in subpopulation AFR AF = 0.0457 (1899/41544). AF 95% confidence interval is 0.044. There are 49 homozygotes in GnomAd4. There are 936 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 49 AR gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_022131.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CLSTN2	NM_022131.3	MANE Select	c.372C>A	p.Ile124Ile	synonymous	Exon 3 of 17	NP_071414.2	Q9H4D0

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CLSTN2	ENST00000458420.7	TSL:1 MANE Select	c.372C>A	p.Ile124Ile	synonymous	Exon 3 of 17	ENSP00000402460.2	Q9H4D0
	CLSTN2	ENST00000511524.1	TSL:2	n.560C>A		non_coding_transcript_exon	Exon 3 of 11

Frequencies

GnomAD3 genomes

AF:

0.0133

AC:

2023

AN:

152160

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0456

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00648

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.000191

Gnomad OTH

AF:

0.00908

GnomAD2 exomes

AF:

0.00344

AC:

863

AN:

251040

AF XY:

0.00249

show subpopulations

Gnomad AFR exome

AF:

0.0457

Gnomad AMR exome

AF:

0.00283

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000706

Gnomad OTH exome

AF:

0.00212

GnomAD4 exome

AF:

0.00140

AC:

2050

AN:

1461848

Hom.:

Cov.:

AF XY:

0.00118

AC XY:

856

AN XY:

727224

show subpopulations

African (AFR)

AF:

0.0478

AC:

1599

AN:

33480

American (AMR)

AF:

0.00324

AC:

145

AN:

44718

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.000139

AC:

AN:

86248

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.00347

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.0000450

AC:

AN:

1111988

Other (OTH)

AF:

0.00371

AC:

224

AN:

60392

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.485

Heterozygous variant carriers

102

203

305

406

508

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

108

162

216

270

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0133

AC:

2032

AN:

152278

Hom.:

Cov.:

AF XY:

0.0126

AC XY:

936

AN XY:

74470

show subpopulations

African (AFR)

AF:

0.0457

AC:

1899

AN:

41544

American (AMR)

AF:

0.00647

AC:

AN:

15294

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5176

South Asian (SAS)

AF:

0.000207

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10622

Middle Eastern (MID)

AF:

0.00340

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000191

AC:

AN:

68026

Other (OTH)

AF:

0.00899

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.496

Heterozygous variant carriers

102

204

306

408

510

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

120

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00268

Hom.:

Bravo

AF:

0.0152

Asia WGS

AF:

0.00346

AC:

AN:

3478

EpiCase

AF:

0.000109

EpiControl

AF:

0.00

ClinVar

ClinVar submissions

Significance:Benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (2)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.17

CADD

Benign

(source)

DANN

Benign

0.83

PhyloP100

2.3

Mutation Taster

=97/3

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.15

Details are displayed if max score is > 0.2

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over