rs778178863

Variant names:

• chr10-68189070-A-G
• rs778178863
• NM_032578.4:c.2869A>G

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 0P and 3B. BP4_Moderate BS1_Supporting

The NM_032578.4(MYPN):​c.2869A>G​(p.Thr957Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000731 in 1,614,074 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Synonymous variant affecting the same amino acid position (i.e. T957T) has been classified as Likely benign.

• Frequency:
  • Genomes: 𝑓 0.000020 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000079 (0 hom.)
• Consequence: MYPN NM_032578.4 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:3
• Conservation: PhyloP100: 1.78
• Publications: 0 publications found

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: ClinGen, Labcorp Genetics (formerly Invitae)
• 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: Labcorp Genetics (formerly Invitae)
• hypertrophic cardiomyopathy

  Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

ACMG classification

Our verdict: Likely_benign. The variant received -3 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.15481737).
• BS1: Variant frequency is greater than expected in population nfe. GnomAdExome4 allele frequency = 0.0000787 (115/1461848) while in subpopulation NFE AF = 0.000101 (112/1111986). AF 95% confidence interval is 0.0000853. There are 0 homozygotes in GnomAdExome4. There are 51 alleles in the male GnomAdExome4 subpopulation. Median coverage is 30. This position passed quality control check. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_032578.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MYPN	NM_032578.4	MANE Select	c.2869A>G	p.Thr957Ala	missense	Exon 13 of 20	NP_115967.2	Q86TC9-1
	MYPN	NM_001256267.2		c.2869A>G	p.Thr957Ala	missense	Exon 14 of 21	NP_001243196.1	Q86TC9-1
	MYPN	NM_001256268.2		c.1987A>G	p.Thr663Ala	missense	Exon 17 of 24	NP_001243197.1	A0A087WX60

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MYPN	ENST00000358913.10	TSL:1 MANE Select	c.2869A>G	p.Thr957Ala	missense	Exon 13 of 20	ENSP00000351790.5	Q86TC9-1
	MYPN	ENST00000540630.6	TSL:1	c.2923A>G	p.Thr975Ala	missense	Exon 13 of 20	ENSP00000441668.3	A0A8J9ASZ5
	MYPN	ENST00000613327.5	TSL:1	c.2869A>G	p.Thr957Ala	missense	Exon 14 of 21	ENSP00000480757.2	Q86TC9-1

Frequencies

GnomAD3 genomes AF: 0.0000197 AC: 3 AN: 152226 Hom.: 0 Cov.: 32

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: 0.0000294

Gnomad OTH AF: 0.000478

GnomAD2 exomes AF: 0.00000797 AC: 2 AN: 250874 AF XY: 0.00

Gnomad AFR exome AF: 0.0000615

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000883

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000787 AC: 115 AN: 1461848 Hom.: 0 Cov.: 30 AF XY: 0.0000701 AC XY: 51 AN XY: 727222

African (AFR) AF: 0.0000299 AC: 1 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44720

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26134

East Asian (EAS) AF: 0.00 AC: 0 AN: 39692

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53418

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5764

European-Non Finnish (NFE) AF: 0.000101 AC: 112 AN: 1111986

Other (OTH) AF: 0.0000331 AC: 2 AN: 60396

GnomAD4 genome AF: 0.0000197 AC: 3 AN: 152226 Hom.: 0 Cov.: 32 AF XY: 0.0000403 AC XY: 3 AN XY: 74372

African (AFR) AF: 0.00 AC: 0 AN: 41462

American (AMR) AF: 0.00 AC: 0 AN: 15284

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3468

East Asian (EAS) AF: 0.00 AC: 0 AN: 5204

South Asian (SAS) AF: 0.00 AC: 0 AN: 4830

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10624

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000294 AC: 2 AN: 68036

Other (OTH) AF: 0.000478 AC: 1 AN: 2090

Alfa AF: 0.0000987 Hom.: 0

Bravo AF: 0.0000151

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	1	-	Cardiovascular phenotype (1)
-	1	-	Dilated cardiomyopathy 1KK (1)
-	1	-	Sudden unexplained death (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.20
BayesDel_addAF	Benign	-0.26	T
BayesDel_noAF	Benign	-0.43
CADD	Benign	22
DANN	Uncertain	0.98
DEOGEN2	Benign	0.022	T
Eigen	Benign	-0.00029
Eigen_PC	Benign	0.15
FATHMM_MKL	Benign	0.75	D
LIST_S2	Uncertain	0.88	D
M_CAP	Benign	0.029	D
MetaRNN	Benign	0.15	T
MetaSVM	Benign	-0.72	T
MutationAssessor	Benign	0.94	L
PhyloP100		1.8
PrimateAI	Uncertain	0.50	T
PROVEAN	Benign	-0.20	N
REVEL	Benign	0.13
Sift	Benign	0.18	T
Sift4G	Benign	0.12	T
Polyphen		0.82	P
Vest4		0.28
MVP		0.74
MPC		0.24
ClinPred		0.15	T
GERP RS		5.8
Varity_R		0.053
gMVP		0.28
Mutation Taster		=90/10	polymorphism

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

Other links and lift over

dbSNP: rs778178863; hg19: chr10-69948827;