Genetic Variant MYPN:c.-2+9C>T (chr10-68109732-C-T) – ACMG Classification: Benign (-20 pts)

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_032578.4(MYPN):c.-2+9C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00352 in 452,758 control chromosomes in the GnomAD database, including 32 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.0083 ( 28 hom., cov: 32)

Exomes 𝑓: 0.0011 ( 4 hom. )

Consequence

MYPN
NM_032578.4 intron

Scores

Clinical Significance

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

Conservation

PhyloP100: 1.47

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:

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -20 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.56).

BP6

Variant 10-68109732-C-T is Benign according to our data. Variant chr10-68109732-C-T is described in ClinVar as [Benign]. Clinvar id is 138420.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00834 (1269/152228) while in subpopulation AFR AF= 0.029 (1203/41530). AF 95% confidence interval is 0.0276. There are 28 homozygotes in gnomad4. There are 573 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

BS2

High AC in GnomAd4 at 1269 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MYPN	NM_032578.4 link	c.-2+9C>T		intron_variant	Intron 1 of 19	ENST00000358913.10	NP_115967.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MYPN	ENST00000358913.10 link	c.-2+9C>T		intron_variant	Intron 1 of 19	1	NM_032578.4	ENSP00000351790.5		Q86TC9-1

Frequencies

GnomAD3 genomes

AF:

0.00834

AC:

1269

AN:

152110

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0291

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00302

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:

0.00718

GnomAD3 exomes

AF:

0.00173

AC:

223

AN:

129104

Hom.:

AF XY:

0.00136

AC XY:

AN XY:

70476

show subpopulations

Gnomad AFR exome

AF:

0.0322

Gnomad AMR exome

AF:

0.000742

Gnomad ASJ exome

AF:

0.000124

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000614

Gnomad OTH exome

AF:

0.00126

GnomAD4 exome

AF:

0.00108

AC:

326

AN:

300530

Hom.:

Cov.:

AF XY:

0.000853

AC XY:

146

AN XY:

171226

show subpopulations

Gnomad4 AFR exome

AF:

0.0306

Gnomad4 AMR exome

AF:

0.000920

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000673

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000570

Gnomad4 OTH exome

AF:

0.00207

GnomAD4 genome

AF:

0.00834

AC:

1269

AN:

152228

Hom.:

Cov.:

AF XY:

0.00770

AC XY:

573

AN XY:

74422

show subpopulations

Gnomad4 AFR

AF:

0.0290

Gnomad4 AMR

AF:

0.00301

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000735

Gnomad4 OTH

AF:

0.00711

Alfa

AF:

0.00652

Hom.:

Bravo

AF:

0.00924

Asia WGS

AF:

0.000866

AC:

AN:

3478

ClinVar

Significance: Benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:1

Mar 26, 2014

GeneDx

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

Dilated cardiomyopathy 1KK;C4479186:MYPN-related myopathy

Benign:1

Feb 23, 2022

Fulgent Genetics, Fulgent Genetics

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.56

CADD

Benign

DANN

Benign

0.77

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