rs191505313

Variant summary

Our verdict is Benign. The variant received -10 ACMG points: 0P and 10B. BP4_StrongBP6_ModerateBS2

The NM_003803.4(MYOM1):​c.572C>T​(p.Thr191Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0003 in 1,600,572 control chromosomes in the GnomAD database, including 4 homozygotes. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★). Synonymous variant affecting the same amino acid position (i.e. T191T) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00029 ( 0 hom., cov: 30)
Exomes 𝑓: 0.00030 ( 4 hom. )

Consequence

MYOM1
NM_003803.4 missense

Scores

1
18

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: -0.160

Publications

1 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 -10 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.0052524507).
BP6
Variant 18-3188947-G-A is Benign according to our data. Variant chr18-3188947-G-A is described in ClinVar as Likely_benign. ClinVar VariationId is 525076.Status of the report is criteria_provided_single_submitter, 1 stars.
BS2
High AC in GnomAd4 at 44 AD gene.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
MYOM1NM_003803.4 linkc.572C>T p.Thr191Met missense_variant Exon 4 of 38 ENST00000356443.9 NP_003794.3

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
MYOM1ENST00000356443.9 linkc.572C>T p.Thr191Met missense_variant Exon 4 of 38 1 NM_003803.4 ENSP00000348821.4
MYOM1ENST00000261606.11 linkc.572C>T p.Thr191Met missense_variant Exon 4 of 37 1 ENSP00000261606.7

Frequencies

GnomAD3 genomes
AF:
0.000292
AC:
44
AN:
150818
Hom.:
0
Cov.:
30
show subpopulations
Gnomad AFR
AF:
0.000440
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.000132
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.000198
Gnomad SAS
AF:
0.00356
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000884
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.000546
AC:
136
AN:
249246
AF XY:
0.000710
show subpopulations
Gnomad AFR exome
AF:
0.000517
Gnomad AMR exome
AF:
0.0000869
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.000133
Gnomad OTH exome
AF:
0.000330
GnomAD4 exome
AF:
0.000301
AC:
436
AN:
1449634
Hom.:
4
Cov.:
32
AF XY:
0.000435
AC XY:
314
AN XY:
721390
show subpopulations
African (AFR)
AF:
0.000151
AC:
5
AN:
33118
American (AMR)
AF:
0.000112
AC:
5
AN:
44566
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
25928
East Asian (EAS)
AF:
0.0000510
AC:
2
AN:
39214
South Asian (SAS)
AF:
0.00383
AC:
329
AN:
86008
European-Finnish (FIN)
AF:
0.0000188
AC:
1
AN:
53214
Middle Eastern (MID)
AF:
0.000521
AC:
3
AN:
5756
European-Non Finnish (NFE)
AF:
0.0000726
AC:
80
AN:
1101942
Other (OTH)
AF:
0.000184
AC:
11
AN:
59888
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.440
Heterozygous variant carriers
0
30
59
89
118
148
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:
0.000292
AC:
44
AN:
150938
Hom.:
0
Cov.:
30
AF XY:
0.000339
AC XY:
25
AN XY:
73672
show subpopulations
African (AFR)
AF:
0.000439
AC:
18
AN:
40998
American (AMR)
AF:
0.000132
AC:
2
AN:
15126
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3464
East Asian (EAS)
AF:
0.000199
AC:
1
AN:
5034
South Asian (SAS)
AF:
0.00356
AC:
17
AN:
4770
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10396
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
290
European-Non Finnish (NFE)
AF:
0.0000884
AC:
6
AN:
67848
Other (OTH)
AF:
0.00
AC:
0
AN:
2104
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.498
Heterozygous variant carriers
0
3
6
9
12
15
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
2
4
6
8
10
<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:
0.000193
Hom.:
0
Bravo
AF:
0.000234
ESP6500AA
AF:
0.000491
AC:
2
ESP6500EA
AF:
0.000119
AC:
1
ExAC
AF:
0.000628
AC:
76
Asia WGS
AF:
0.00115
AC:
4
AN:
3478
EpiCase
AF:
0.000164
EpiControl
AF:
0.0000593

ClinVar

Significance: Likely benign
Submissions summary: Benign:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

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

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.28
BayesDel_addAF
Benign
-0.49
T
BayesDel_noAF
Benign
-0.48
CADD
Benign
13
DANN
Benign
0.85
DEOGEN2
Benign
0.015
T;.;.
Eigen
Benign
-0.98
Eigen_PC
Benign
-1.1
FATHMM_MKL
Benign
0.016
N
LIST_S2
Benign
0.68
T;T;T
M_CAP
Benign
0.0026
T
MetaRNN
Benign
0.0053
T;T;T
MetaSVM
Benign
-1.1
T
MutationAssessor
Benign
0.0
N;.;N
PhyloP100
-0.16
PrimateAI
Benign
0.27
T
PROVEAN
Benign
-0.010
N;.;N
REVEL
Benign
0.072
Sift
Uncertain
0.013
D;.;D
Sift4G
Benign
0.097
T;T;T
Polyphen
0.34
B;.;B
Vest4
0.14
MVP
0.34
MPC
0.14
ClinPred
0.014
T
GERP RS
1.5
Varity_R
0.017
gMVP
0.14
Mutation Taster
=91/9
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: rs191505313; hg19: chr18-3188945; API