rs200710899

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4_StrongBP6BS2

The NM_003803.4(MYOM1):​c.3412C>T​(p.Arg1138Cys) variant causes a missense change. The variant allele was found at a frequency of 0.000295 in 1,612,988 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts 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. R1138H) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0016 ( 0 hom., cov: 33)
Exomes 𝑓: 0.00016 ( 0 hom. )

Consequence

MYOM1
NM_003803.4 missense

Scores

3
8
8

Clinical Significance

Benign criteria provided, single submitter B:2

Conservation

PhyloP100: 4.82

Publications

0 publications found
Variant links:
Genes affected
MYOM1 (HGNC:7613): (myomesin 1) The giant protein titin, together with its associated proteins, interconnects the major structure of sarcomeres, the M bands and Z discs. The C-terminal end of the titin string extends into the M line, where it binds tightly to M-band constituents of apparent molecular masses of 190 kD (myomesin 1) and 165 kD (myomesin 2). This protein, myomesin 1, like myomesin 2, titin, and other myofibrillar proteins contains structural modules with strong homology to either fibronectin type III (motif I) or immunoglobulin C2 (motif II) domains. Myomesin 1 and myomesin 2 each have a unique N-terminal region followed by 12 modules of motif I or motif II, in the arrangement II-II-I-I-I-I-I-II-II-II-II-II. The two proteins share 50% sequence identity in this repeat-containing region. The head structure formed by these 2 proteins on one end of the titin string extends into the center of the M band. The integrating structure of the sarcomere arises from muscle-specific members of the superfamily of immunoglobulin-like proteins. Alternatively spliced transcript variants encoding different isoforms have been identified. [provided by RefSeq, Jul 2008]
MYOM1 Gene-Disease associations (from GenCC):
  • hypertrophic cardiomyopathy
    Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -9 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.014011234).
BP6
Variant 18-3112304-G-A is Benign according to our data. Variant chr18-3112304-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 454448.
BS2
High AC in GnomAd4 at 247 AD gene.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
MYOM1NM_003803.4 linkc.3412C>T p.Arg1138Cys missense_variant Exon 22 of 38 ENST00000356443.9 NP_003794.3 P52179-1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
MYOM1ENST00000356443.9 linkc.3412C>T p.Arg1138Cys missense_variant Exon 22 of 38 1 NM_003803.4 ENSP00000348821.4 P52179-1
MYOM1ENST00000261606.11 linkc.3124C>T p.Arg1042Cys missense_variant Exon 21 of 37 1 ENSP00000261606.7 P52179-2

Frequencies

GnomAD3 genomes
AF:
0.00160
AC:
244
AN:
152202
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.00560
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.000458
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.000207
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000147
Gnomad OTH
AF:
0.00144
GnomAD2 exomes
AF:
0.000410
AC:
102
AN:
248842
AF XY:
0.000333
show subpopulations
Gnomad AFR exome
AF:
0.00530
Gnomad AMR exome
AF:
0.000320
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.000279
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000266
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.000157
AC:
229
AN:
1460668
Hom.:
0
Cov.:
30
AF XY:
0.000132
AC XY:
96
AN XY:
726628
show subpopulations
African (AFR)
AF:
0.00517
AC:
173
AN:
33464
American (AMR)
AF:
0.000246
AC:
11
AN:
44690
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26104
East Asian (EAS)
AF:
0.000176
AC:
7
AN:
39678
South Asian (SAS)
AF:
0.0000232
AC:
2
AN:
86160
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53388
Middle Eastern (MID)
AF:
0.000868
AC:
5
AN:
5760
European-Non Finnish (NFE)
AF:
0.00000630
AC:
7
AN:
1111102
Other (OTH)
AF:
0.000398
AC:
24
AN:
60322
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.463
Heterozygous variant carriers
0
10
20
30
40
50
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
10
20
30
40
50
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
AF:
0.00162
AC:
247
AN:
152320
Hom.:
0
Cov.:
33
AF XY:
0.00158
AC XY:
118
AN XY:
74474
show subpopulations
African (AFR)
AF:
0.00565
AC:
235
AN:
41574
American (AMR)
AF:
0.000458
AC:
7
AN:
15292
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3472
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5186
South Asian (SAS)
AF:
0.000207
AC:
1
AN:
4824
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10620
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
294
European-Non Finnish (NFE)
AF:
0.0000147
AC:
1
AN:
68042
Other (OTH)
AF:
0.00143
AC:
3
AN:
2104
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.502
Heterozygous variant carriers
0
12
24
36
48
60
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
4
8
12
16
20
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
Alfa
AF:
0.000615
Hom.:
1
Bravo
AF:
0.00173
ESP6500AA
AF:
0.00484
AC:
19
ESP6500EA
AF:
0.00
AC:
0
ExAC
AF:
0.000521
AC:
63
Asia WGS
AF:
0.000289
AC:
1
AN:
3478

ClinVar

Significance: Benign
Submissions summary: Benign:2
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

MYOM1-related disorder Benign:1
Sep 30, 2019
PreventionGenetics, part of Exact Sciences
Significance:Likely benign
Review Status:no assertion criteria provided
Collection Method:clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Hypertrophic cardiomyopathy Benign:1
Jan 19, 2025
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Uncertain
0.43
BayesDel_addAF
Benign
-0.40
T
BayesDel_noAF
Benign
-0.34
CADD
Uncertain
26
DANN
Pathogenic
1.0
DEOGEN2
Benign
0.26
T;.;.
Eigen
Uncertain
0.51
Eigen_PC
Uncertain
0.46
FATHMM_MKL
Uncertain
0.80
D
LIST_S2
Pathogenic
0.98
D;D;D
M_CAP
Benign
0.025
T
MetaRNN
Benign
0.014
T;T;T
MetaSVM
Benign
-0.62
T
MutationAssessor
Uncertain
2.7
M;.;.
PhyloP100
4.8
PrimateAI
Uncertain
0.56
T
PROVEAN
Pathogenic
-5.4
D;.;D
REVEL
Uncertain
0.31
Sift
Benign
0.083
T;.;D
Sift4G
Uncertain
0.0020
D;D;D
Polyphen
1.0
D;.;D
Vest4
0.58
MVP
0.86
MPC
0.68
ClinPred
0.099
T
GERP RS
5.2
Varity_R
0.12
gMVP
0.64
Mutation Taster
=82/18
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

Publications

Other links and lift over

dbSNP: rs200710899; hg19: chr18-3112302; API