dbSNP rs777300399: CAPNS2:p.Thr57Asn (chr16-55566926-C-A) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_032330.3(CAPNS2):c.170C>A(p.Thr57Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000657 in 152,118 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. 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. T57I) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

CAPNS2
NM_032330.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 1.00

Variant links:

Genes affected

CAPNS2 (HGNC:16371): (calpain small subunit 2) Enables calcium-dependent cysteine-type endopeptidase activity. Predicted to be involved in proteolysis. Predicted to be located in cytosol and plasma membrane. [provided by Alliance of Genome Resources, Apr 2022]

CAPNS2 links:

LPCAT2 (HGNC:26032): (lysophosphatidylcholine acyltransferase 2) This gene encodes a member of the lysophospholipid acyltransferase family. The encoded enzyme may function in two ways: to catalyze the biosynthesis of platelet-activating factor (1-O-alkyl-2-acetyl-sn-glycero-3-phosphocholine) from 1-O-alkyl-sn-glycero-3-phosphocholine, and to catalyze the synthesis of glycerophospholipid precursors from arachidonyl-CoA and lysophosphatidylcholine. The encoded protein may function in membrane biogenesis and production of platelet-activating factor in inflammatory cells. The enzyme may localize to the endoplasmic reticulum and the Golgi. [provided by RefSeq, Feb 2009]

LPCAT2 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.02610749).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CAPNS2	NM_032330.3 link	c.170C>A	p.Thr57Asn	missense_variant	Exon 1 of 1	ENST00000457326.3	NP_115706.1
LPCAT2	NM_017839.5 link	c.1216-7705C>A		intron_variant	Intron 11 of 13	ENST00000262134.10	NP_060309.2	Q7L5N7-1
LPCAT2	XM_047434277.1 link	c.1048-7705C>A		intron_variant	Intron 11 of 13		XP_047290233.1
LPCAT2	XM_011523169.4 link	c.406-7705C>A		intron_variant	Intron 8 of 10		XP_011521471.1	Q7L5N7-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CAPNS2	ENST00000457326.3 link	c.170C>A	p.Thr57Asn	missense_variant	Exon 1 of 1	6	NM_032330.3	ENSP00000400882.2		Q96L46
LPCAT2	ENST00000262134.10 link	c.1216-7705C>A		intron_variant	Intron 11 of 13	1	NM_017839.5	ENSP00000262134.5		Q7L5N7-1

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152118

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000804

AC:

AN:

248834

Hom.:

AF XY:

0.00000741

AC XY:

AN XY:

134980

show subpopulations

Gnomad AFR exome

AF:

0.000129

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

Data not reliable, filtered out with message: AS_VQSR

AF:

6.84e-7

AC:

AN:

1461592

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727070

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152118

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74306

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000378

ExAC

AF:

0.00000827

AC:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.083

BayesDel_addAF

Benign

-0.49

BayesDel_noAF

Benign

-0.70

CADD

Benign

9.1

DANN

Benign

0.89

DEOGEN2

Benign

0.0025

Eigen

Benign

-0.43

Eigen_PC

Benign

-0.20

FATHMM_MKL

Benign

0.30

LIST_S2

Benign

0.043

M_CAP

Benign

0.0039

MetaRNN

Benign

0.026

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.29

PrimateAI

Benign

0.43

PROVEAN

Benign

0.47

REVEL

Benign

0.061

Sift

Benign

0.41

Sift4G

Benign

0.47

Polyphen

0.0

Vest4

0.058

MutPred

0.22

Loss of glycosylation at T57 (P = 0.0118);

MVP

0.21

MPC

0.13

ClinPred

0.050

GERP RS

5.7

Varity_R

0.10

gMVP

0.12

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

LitVar

Other links and lift over