rs71534278

chr10-68199417-C-Achr10-68199417-C-Gchr10-68199417-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM5PP3

The NM_032578.4(MYPN):c.3335C>A(p.Pro1112His) variant causes a missense change. The variant allele was found at a frequency of 0.00000496 in 1,614,054 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P1112L) has been classified as Likely benign.

Frequency

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

Exomes 𝑓: 0.0000048 ( 0 hom. )

Consequence

MYPN
NM_032578.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:3

Conservation

PhyloP100: 6.01

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 3 ACMG points.

PM5

Other missense variant is known to change same aminoacid residue: Variant chr10-68199417-C-T is described in Lovd as [Pathogenic].

PP3

MetaRNN computational evidence supports a deleterious effect, 0.755

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MYPN	NM_032578.4 linkuse as main transcript	c.3335C>A	p.Pro1112His	missense_variant	17/20	ENST00000358913.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MYPN	ENST00000358913.10 linkuse as main transcript	c.3335C>A	p.Pro1112His	missense_variant	17/20	1	NM_032578.4	P1	Q86TC9-1

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152206

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000479

AC:

AN:

1461848

Hom.:

Cov.:

AF XY:

0.00000825

AC XY:

AN XY:

727222

show subpopulations

Gnomad4 AFR exome

AF:

0.00

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:

0.00000629

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152206

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74356

show subpopulations

Gnomad4 AFR

AF:

0.00

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:

0.0000147

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Primary dilated cardiomyopathy

Uncertain:1

Uncertain significance, criteria provided, single submitter

research

Biesecker Lab/Clinical Genomics Section, National Institutes of Health

Jun 24, 2013

- -

Cardiovascular phenotype

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jan 16, 2024

The p.P1112H variant (also known as c.3335C>A), located in coding exon 16 of the MYPN gene, results from a C to A substitution at nucleotide position 3335. The proline at codon 1112 is replaced by histidine, an amino acid with similar properties. This alteration has been reported as a secondary cardiac variant in an exome cohort and was detected in a cardiomyopathy/arrhythmia genetic testing cohort; however, clinical details are limited (Ng D et al. Circ Cardiovasc Genet, 2013 Aug;6:337-46; van Lint FHM et al. Neth Heart J, 2019 Jun;27:304-309). This alteration has also been reported in sudden death and arrhythmogenic right ventricular cardiomyopathy (ARVC) cohorts (Hertz CL et al. Int J Legal Med, 2016 Jan;130:91-102; Medeiros-Domingo A et al. Europace, 2017 Jun;19:1063-1069). The variant was also seen in cases of cardiomyopathy and was seen with variants in other cardiac-related genes (Refaat MM et al. BMC Med Genomics, 2019 Feb;12:33; Mastroianno S et al. Ann Noninvasive Electrocardiol, 2020 May;25:e12687; Paz-Cruz E et al. Cardiol Res, 2023 Oct;14:409-415). This amino acid position is well conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Dilated cardiomyopathy 1KK;C4479186:MYPN-related myopathy

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Apr 14, 2022

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.31

BayesDel_addAF

Uncertain

0.14

BayesDel_noAF

Uncertain

-0.040

Cadd

Pathogenic

Dann

Uncertain

1.0

Eigen

Pathogenic

0.77

Eigen_PC

Pathogenic

0.75

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Uncertain

0.92

D;D;.;D

M_CAP

Uncertain

0.087

MetaRNN

Pathogenic

0.76

D;D;D;D

MetaSVM

Uncertain

-0.14

MutationAssessor

Uncertain

2.6

M;.;M;.

MutationTaster

Benign

1.0

D;D;D

PrimateAI

Uncertain

0.54

PROVEAN

Pathogenic

-5.4

D;D;D;.

REVEL

Uncertain

0.42

Sift

Uncertain

0.0020

D;D;D;.

Sift4G

Uncertain

0.0020

D;D;D;D

Polyphen

1.0

D;D;D;.

Vest4

0.60

MutPred

0.64

Loss of loop (P = 0.1242);.;Loss of loop (P = 0.1242);.;

MVP

0.86

MPC

0.66

ClinPred

0.99

GERP RS

5.4

Varity_R

0.72

gMVP

0.46

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

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over