rs147596628

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 4P and 9B. PP3_StrongBP6BS1BS2

The NM_032578.4(MYPN):c.1130G>A(p.Arg377Gln) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.000894 in 1,611,770 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. 2/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R377G) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00055 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00093 ( 3 hom. )

Consequence

MYPN
NM_032578.4 missense, splice_region

Scores

Splicing: ADA: 1.000

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:4B:6

Conservation

PhyloP100: 4.34

Publications

7 publications found

Variant links:

Genes affected

MYPN (HGNC:23246): (myopalladin) Striated muscle in vertebrates comprises large proteins which must be organized properly to contract efficiently. Z-lines in striated muscle are a sign of this organization, representing the ends of actin thin filaments, titin, nebulin or nebulette and accessory proteins required for structure and function. This gene encodes a protein which interacts with nebulin in skeletal muscle or nebulette in cardiac muscle and alpha-actinin. In addition, this gene product can interact with a protein with the I-band indicating it has a regulatory as well as structural function. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Dec 2011]

MYPN Gene-Disease associations (from GenCC):

MYPN-related myopathy
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), ClinGen
cap myopathy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
childhood-onset nemaline myopathy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
familial isolated dilated cardiomyopathy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
familial isolated restrictive cardiomyopathy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
dilated cardiomyopathy
Inheritance: AD Classification: LIMITED Submitted by: ClinGen
dilated cardiomyopathy 1KK
Inheritance: AD Classification: LIMITED Submitted by: PanelApp Australia, Labcorp Genetics (formerly Invitae)
hypertrophic cardiomyopathy
Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

MYPN links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -5 ACMG points.

PP3

Splicing predictors support a deleterious effect. Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF. Scorers claiming Uncertain: max_spliceai. No scorers claiming Benign.

BP6

Variant 10-68145526-G-A is Benign according to our data. Variant chr10-68145526-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 191749.

BS1

Variant frequency is greater than expected in population nfe. GnomAd4 allele frequency = 0.000546 (83/152106) while in subpopulation NFE AF = 0.000897 (61/67988). AF 95% confidence interval is 0.000716. There are 0 homozygotes in GnomAd4. There are 31 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAdExome4 at 3 AD,AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MYPN	NM_032578.4 link	c.1130G>A	p.Arg377Gln	missense_variant, splice_region_variant	Exon 4 of 20	ENST00000358913.10	NP_115967.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MYPN	ENST00000358913.10 link	c.1130G>A	p.Arg377Gln	missense_variant, splice_region_variant	Exon 4 of 20	1	NM_032578.4	ENSP00000351790.5		Q86TC9-1

Frequencies

GnomAD3 genomes

AF:

0.000546

AC:

AN:

151990

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000242

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000655

Gnomad ASJ

AF:

0.000289

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000897

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000534

AC:

134

AN:

251008

AF XY:

0.000464

show subpopulations

Gnomad AFR exome

AF:

0.000185

Gnomad AMR exome

AF:

0.000867

Gnomad ASJ exome

AF:

0.000596

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0000931

Gnomad NFE exome

AF:

0.000705

Gnomad OTH exome

AF:

0.000980

GnomAD4 exome

AF:

0.000930

AC:

1358

AN:

1459664

Hom.:

Cov.:

AF XY:

0.000916

AC XY:

665

AN XY:

726302

show subpopulations

African (AFR)

AF:

0.0000300

AC:

AN:

33364

American (AMR)

AF:

0.000895

AC:

AN:

44708

Ashkenazi Jewish (ASJ)

AF:

0.000421

AC:

AN:

26100

East Asian (EAS)

AF:

0.00

AC:

AN:

39632

South Asian (SAS)

AF:

0.000244

AC:

AN:

86206

European-Finnish (FIN)

AF:

0.000132

AC:

AN:

53136

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5764

European-Non Finnish (NFE)

AF:

0.00112

AC:

1248

AN:

1110460

Other (OTH)

AF:

0.000498

AC:

AN:

60294

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.453

Heterozygous variant carriers

117

175

234

292

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

100

150

200

250

<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:

0.000546

AC:

AN:

152106

Hom.:

Cov.:

AF XY:

0.000417

AC XY:

AN XY:

74338

show subpopulations

African (AFR)

AF:

0.000241

AC:

AN:

41480

American (AMR)

AF:

0.000654

AC:

AN:

15280

Ashkenazi Jewish (ASJ)

AF:

0.000289

AC:

AN:

3466

East Asian (EAS)

AF:

0.00

AC:

AN:

5188

South Asian (SAS)

AF:

0.000208

AC:

AN:

4816

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10582

Middle Eastern (MID)

AF:

0.00

AC:

AN:

292

European-Non Finnish (NFE)

AF:

0.000897

AC:

AN:

67988

Other (OTH)

AF:

0.00

AC:

AN:

2104

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.504

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

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:

0.000726

Hom.:

Bravo

AF:

0.000544

TwinsUK

AF:

0.00135

AC:

ALSPAC

AF:

0.00182

AC:

ESP6500AA

AF:

0.000454

AC:

ESP6500EA

AF:

0.000930

AC:

ExAC

AF:

0.000486

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.000709

EpiControl

AF:

0.000830

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:4Benign:6

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:2Benign:2

Jun 24, 2013

Biesecker Lab/Clinical Genomics Section, National Institutes of Health

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:research

- -

Apr 30, 2021

Mayo Clinic Laboratories, Mayo Clinic

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

May 12, 2021

GeneDx

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

In silico analysis, which includes protein predictors and evolutionary conservation, supports that this variant does not alter protein structure/function; Reported in ClinVar (ClinVar Variant ID# 191749; Landrum et al., 2016); This variant is associated with the following publications: (PMID: 23861362, 28050010) -

Oct 01, 2023

CeGaT Center for Human Genetics Tuebingen

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

MYPN: BP4 -

not specified

Uncertain:1Benign:1

Apr 09, 2015

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The p.Arg377Gln variant in MYPN has not been previously reported in individuals with cardiomyopathy, but has been identified in 0.1% (13/11570) of Latino chromo somes and 43/66674 European chromosomes by the Exome Aggregation Consortium (ExA C, http://exac.broadinstitute.org; dbSNP rs147596628). Computational prediction tools and conservation analysis suggest that this variant may not impact the pro tein, though this information is not predictive enough to rule out pathogenicity . This variant is located in the last base of the exon, which is part of the 5' splice region. Computational tools do suggest an impact to splicing; however, th is information is not predictive enough to determine pathogenicity. In summary, in the presence of conflicting data, the clinical significance of the p.Arg377Gl n variant is uncertain. -

Mar 05, 2024

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Variant summary: MYPN c.1130G>A (p.Arg377Gln) results in a conservative amino acid change in the encoded protein sequence. Three of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 0.00053 in 251008 control chromosomes (gnomAD). The observed variant frequency is approximately 11 fold of the estimated maximal expected allele frequency for a pathogenic variant in MYPN causing Cardiomyopathy phenotype (5e-05), strongly suggesting that the variant is benign. c.1130G>A has been reported in the literature in at-least one pediatric DCM proband without strong evidence for causality (example: Khan-2022). This report does not provide unequivocal conclusions about association of the variant with Cardiomyopathy. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. The following publication has been ascertained in the context of this evaluation (PMID: 34935411). ClinVar contains an entry for this variant (Variation ID: 191749). Based on the evidence outlined above, the variant was classified as likely benign. -

Dilated cardiomyopathy 1KK

Uncertain:1Benign:1

Dec 11, 2015

Genome Diagnostics Laboratory, University Medical Center Utrecht

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Jan 30, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Cardiomyopathy

Benign:1

Jan 10, 2019

Center for Advanced Laboratory Medicine, UC San Diego Health, University of California San Diego

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Cardiovascular phenotype

Benign:1

Mar 05, 2019

Ambry Genetics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.10

BayesDel_addAF

Benign

-0.30

BayesDel_noAF

Benign

-0.22

CADD

Pathogenic

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.023

.;.;.;T;.

Eigen

Benign

0.16

Eigen_PC

Uncertain

0.31

FATHMM_MKL

Benign

0.67

LIST_S2

Uncertain

0.87

D;D;.;D;D

M_CAP

Benign

0.023

MetaRNN

Benign

0.035

T;T;T;T;T

MetaSVM

Benign

-0.67

MutationAssessor

Benign

0.98

L;.;L;.;L

PhyloP100

4.3

PrimateAI

Benign

0.44

PROVEAN

Benign

0.46

N;N;N;.;N

REVEL

Benign

0.12

Sift

Benign

0.48

T;T;T;.;T

Sift4G

Benign

0.76

T;T;T;T;T

Polyphen

0.026

B;B;B;.;D

Vest4

0.42

MVP

0.68

MPC

0.16

ClinPred

0.018

GERP RS

5.2

Varity_R

0.062

gMVP

0.24

Mutation Taster

=50/50

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Pathogenic

1.0

dbscSNV1_RF

Pathogenic

0.99

SpliceAI score (max)

0.39

Details are displayed if max score is > 0.2

DS_DL_spliceai

0.39

Position offset: 0

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

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over