dbSNP rs78369269: CAPN3:p.Pro313Pro (chr15-42390090-G-A) – ACMG Classification: Benign (-21 pts)

Variant summary

Our verdict is Benign. The variant received -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BS1BS2

The NM_000070.3(CAPN3):c.939G>A(p.Pro313Pro) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00121 in 1,614,016 control chromosomes in the GnomAD database, including 22 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Synonymous variant affecting the same amino acid position (i.e. P313P) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.0065 ( 10 hom., cov: 32)

Exomes 𝑓: 0.00067 ( 12 hom. )

Consequence

CAPN3
NM_000070.3 synonymous

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:7

Conservation

PhyloP100: -1.02

Publications

1 publications found

Variant links:

Genes affected

CAPN3 (HGNC:1480): (calpain 3) Calpain, a heterodimer consisting of a large and a small subunit, is a major intracellular protease, although its function has not been well established. This gene encodes a muscle-specific member of the calpain large subunit family that specifically binds to titin. Mutations in this gene are associated with limb-girdle muscular dystrophies type 2A. Alternate promoters and alternative splicing result in multiple transcript variants encoding different isoforms and some variants are ubiquitously expressed. [provided by RefSeq, Jul 2008]

CAPN3 Gene-Disease associations (from GenCC):

muscular dystrophy, limb-girdle, autosomal dominant
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
autosomal recessive limb-girdle muscular dystrophy
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
autosomal recessive limb-girdle muscular dystrophy type 2A
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, Myriad Women’s Health
limb-girdle muscular dystrophy
Inheritance: SD Classification: DEFINITIVE Submitted by: ClinGen
muscular dystrophy, limb-girdle, autosomal dominant 4
Inheritance: AD Classification: STRONG, MODERATE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)

CAPN3 links:

ENSG00000258461 (HGNC:):

ENSG00000258461 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.67).

BP6

Variant 15-42390090-G-A is Benign according to our data. Variant chr15-42390090-G-A is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 128575.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=-1.02 with no splicing effect.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00647 (984/152168) while in subpopulation AFR AF = 0.023 (956/41490). AF 95% confidence interval is 0.0218. There are 10 homozygotes in GnomAd4. There are 465 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 10 AD,AR gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000070.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
CAPN3	NM_000070.3	MANE Select	c.939G>A	p.Pro313Pro	synonymous	Exon 6 of 24	NP_000061.1	P20807-1
CAPN3	NM_024344.2		c.939G>A	p.Pro313Pro	synonymous	Exon 6 of 23	NP_077320.1	P20807-3
CAPN3	NM_173087.2		c.801+994G>A		intron	N/A	NP_775110.1	P20807-2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
CAPN3	ENST00000397163.8	TSL:1 MANE Select	c.939G>A	p.Pro313Pro	synonymous	Exon 6 of 24	ENSP00000380349.3	P20807-1
CAPN3	ENST00000357568.8	TSL:1	c.939G>A	p.Pro313Pro	synonymous	Exon 6 of 23	ENSP00000350181.3	P20807-3
CAPN3	ENST00000349748.8	TSL:1	c.801+994G>A		intron	N/A	ENSP00000183936.4	P20807-2

Frequencies

GnomAD3 genomes

AF:

0.00646

AC:

982

AN:

152050

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0231

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000917

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:

0.0000735

Gnomad OTH

AF:

0.00432

GnomAD2 exomes

AF:

0.00159

AC:

399

AN:

251440

AF XY:

0.00114

show subpopulations

Gnomad AFR exome

AF:

0.0231

Gnomad AMR exome

AF:

0.000260

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000109

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000440

Gnomad OTH exome

AF:

0.000815

GnomAD4 exome

AF:

0.000668

AC:

977

AN:

1461848

Hom.:

Cov.:

AF XY:

0.000620

AC XY:

451

AN XY:

727224

show subpopulations

African (AFR)

AF:

0.0257

AC:

860

AN:

33476

American (AMR)

AF:

0.000425

AC:

AN:

44720

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.0000504

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000348

AC:

AN:

86256

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53414

Middle Eastern (MID)

AF:

0.00104

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000207

AC:

AN:

1111982

Other (OTH)

AF:

0.00106

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.467

Heterozygous variant carriers

105

157

210

262

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

120

150

<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:

0.00647

AC:

984

AN:

152168

Hom.:

Cov.:

AF XY:

0.00625

AC XY:

465

AN XY:

74404

show subpopulations

African (AFR)

AF:

0.0230

AC:

956

AN:

41490

American (AMR)

AF:

0.000915

AC:

AN:

15294

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5170

South Asian (SAS)

AF:

0.00

AC:

AN:

4816

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10596

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000735

AC:

AN:

68018

Other (OTH)

AF:

0.00427

AC:

AN:

2106

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.498

Heterozygous variant carriers

138

184

230

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

<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:

0.00496

Hom.:

Bravo

AF:

0.00693

Asia WGS

AF:

0.00173

AC:

AN:

3478

EpiCase

AF:

0.000109

EpiControl

AF:

0.0000593

ClinVar

ClinVar submissions as Germline

Significance:Benign/Likely benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not specified (3)

Autosomal recessive limb-girdle muscular dystrophy type 2A (2)

not provided (2)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.67

CADD

Benign

0.72

(source)

DANN

Benign

0.79

PhyloP100

-1.0

Mutation Taster

=100/0

polymorphism

(source)

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

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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