rs1284303981
Variant summary
Our verdict is Benign. The variant received -7 ACMG points: 0P and 7B. BP4_ModerateBP6BS1
The NM_032578.4(MYPN):c.3301C>A(p.Pro1101Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000109 in 1,461,698 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 17/22 in silico tools predict a benign outcome for this variant. 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. P1101S) has been classified as Uncertain significance.
Frequency
Consequence
NM_032578.4 missense
Scores
Clinical Significance
Conservation
Publications
- MYPN-related myopathyInheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), ClinGen
- cap myopathyInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
- childhood-onset nemaline myopathyInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
- familial isolated dilated cardiomyopathyInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
- familial isolated restrictive cardiomyopathyInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
- dilated cardiomyopathyInheritance: AD Classification: LIMITED Submitted by: ClinGen
- dilated cardiomyopathy 1KKInheritance: AD Classification: LIMITED Submitted by: PanelApp Australia, Labcorp Genetics (formerly Invitae)
- hypertrophic cardiomyopathyInheritance: AD Classification: NO_KNOWN Submitted by: ClinGen
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ACMG classification
Our verdict: Benign. The variant received -7 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| MYPN | NM_032578.4 | c.3301C>A | p.Pro1101Thr | missense_variant | Exon 17 of 20 | ENST00000358913.10 | NP_115967.2 |
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|---|
| MYPN | ENST00000358913.10 | c.3301C>A | p.Pro1101Thr | missense_variant | Exon 17 of 20 | 1 | NM_032578.4 | ENSP00000351790.5 |
Frequencies
GnomAD3 genomes Cov.: 32
GnomAD2 exomes AF: 0.00000398 AC: 1AN: 251128 AF XY: 0.00000737 show subpopulations
GnomAD4 exome AF: 0.0000109 AC: 16AN: 1461698Hom.: 0 Cov.: 35 AF XY: 0.0000138 AC XY: 10AN XY: 727152 show subpopulations
Age Distribution
GnomAD4 genome Cov.: 32
ClinVar
Submissions by phenotype
Dilated cardiomyopathy 1KK Uncertain:1
In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Tolerated"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The threonine amino acid residue is found in multiple mammalian species, suggesting that this missense change does not adversely affect protein function. These predictions have not been confirmed by published functional studies and their clinical significance is uncertain. This variant has not been reported in the literature in individuals with MYPN-related disease. This variant is not present in population databases (ExAC no frequency). This sequence change replaces proline with threonine at codon 1101 of the MYPN protein (p.Pro1101Thr). The proline residue is weakly conserved and there is a small physicochemical difference between proline and threonine. -
Dilated cardiomyopathy 1KK;C4479186:MYPN-related myopathy Uncertain:1
- -
Cardiovascular phenotype Benign:1
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:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at