NM_032578.4:c.650C>G

Variant names:

• chr10-68122088-C-G
• rs199476403
• NM_032578.4:c.650C>G

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_032578.4(MYPN):​c.650C>G​(p.Ala217Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A217V) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: MYPN NM_032578.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.759
• 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: 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

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.0632706).

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

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MYPN	NM_032578.4	MANE Select	c.650C>G	p.Ala217Gly	missense	Exon 2 of 20	NP_115967.2
	MYPN	NM_001256267.2		c.650C>G	p.Ala217Gly	missense	Exon 3 of 21	NP_001243196.1
	MYPN	NR_045663.4		n.887C>G		non_coding_transcript_exon	Exon 2 of 18

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MYPN	ENST00000358913.10	TSL:1 MANE Select	c.650C>G	p.Ala217Gly	missense	Exon 2 of 20	ENSP00000351790.5
	MYPN	ENST00000540630.6	TSL:1	c.650C>G	p.Ala217Gly	missense	Exon 1 of 20	ENSP00000441668.3
	MYPN	ENST00000613327.5	TSL:1	c.650C>G	p.Ala217Gly	missense	Exon 3 of 21	ENSP00000480757.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.20
BayesDel_addAF	Benign	-0.21	T
BayesDel_noAF	Benign	-0.54
CADD	Benign	19
DANN	Uncertain	0.99
Eigen	Benign	-0.37
Eigen_PC	Benign	-0.26
FATHMM_MKL	Benign	0.37	N
LIST_S2	Benign	0.68	T
M_CAP	Benign	0.0056	T
MetaRNN	Benign	0.063	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.4	L
PhyloP100		0.76
PrimateAI	Benign	0.36	T
PROVEAN	Benign	-0.29	N
REVEL	Benign	0.11
Sift	Benign	0.096	T
Sift4G	Benign	0.36	T
Polyphen		0.028	B
Vest4		0.21
MutPred		0.12		Gain of glycosylation at T219 (P = 0.1946)
MVP		0.67
MPC		0.15
ClinPred		0.13	T
GERP RS		3.8
Varity_R		0.077
gMVP		0.24
Mutation Taster		=47/53	disease causing

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: rs199476403; hg19: chr10-69881845;