rs76414035

Variant summary

Our verdict is Benign. Variant got -10 ACMG points: 0P and 10B. BP4_StrongBP6BP7BS2

The NM_003289.4(TPM2):​c.726C>T​(p.Ala242=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000102 in 1,614,094 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).

Frequency

Genomes: 𝑓 0.00042 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000069 ( 0 hom. )

Consequence

TPM2
NM_003289.4 synonymous

Scores

2

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:2

Conservation

PhyloP100: -3.30
Variant links:
Genes affected
TPM2 (HGNC:12011): (tropomyosin 2) This gene encodes beta-tropomyosin, a member of the actin filament binding protein family, and mainly expressed in slow, type 1 muscle fibers. Mutations in this gene can alter the expression of other sarcomeric tropomyosin proteins, and cause cap disease, nemaline myopathy and distal arthrogryposis syndromes. Alternatively spliced transcript variants encoding different isoforms have been found for this gene.[provided by RefSeq, Mar 2009]

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -10 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.59).
BP6
Variant 9-35684292-G-A is Benign according to our data. Variant chr9-35684292-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 289926.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=1, Benign=1, Uncertain_significance=1}.
BP7
Synonymous conserved (PhyloP=-3.3 with no splicing effect.
BS2
High AC in GnomAd4 at 64 AD gene.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
TPM2NM_003289.4 linkuse as main transcriptc.726C>T p.Ala242= synonymous_variant 8/9 ENST00000645482.3 NP_003280.2
TPM2NM_001301226.2 linkuse as main transcriptc.726C>T p.Ala242= synonymous_variant 8/9 NP_001288155.1
TPM2NM_001301227.2 linkuse as main transcriptc.726C>T p.Ala242= synonymous_variant 8/9 NP_001288156.1
TPM2NM_213674.1 linkuse as main transcriptc.726C>T p.Ala242= synonymous_variant 8/9 NP_998839.1

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
TPM2ENST00000645482.3 linkuse as main transcriptc.726C>T p.Ala242= synonymous_variant 8/9 NM_003289.4 ENSP00000496494 A1P07951-1

Frequencies

GnomAD3 genomes
AF:
0.000401
AC:
61
AN:
152094
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.00140
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.000193
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000147
Gnomad OTH
AF:
0.000479
GnomAD3 exomes
AF:
0.000171
AC:
43
AN:
251482
Hom.:
0
AF XY:
0.0000736
AC XY:
10
AN XY:
135918
show subpopulations
Gnomad AFR exome
AF:
0.00215
Gnomad AMR exome
AF:
0.000116
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.0000544
Gnomad SAS exome
AF:
0.0000327
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000176
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000691
AC:
101
AN:
1461882
Hom.:
0
Cov.:
31
AF XY:
0.0000633
AC XY:
46
AN XY:
727246
show subpopulations
Gnomad4 AFR exome
AF:
0.00209
Gnomad4 AMR exome
AF:
0.000112
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.0000756
Gnomad4 SAS exome
AF:
0.0000464
Gnomad4 FIN exome
AF:
0.0000187
Gnomad4 NFE exome
AF:
0.00000719
Gnomad4 OTH exome
AF:
0.000166
GnomAD4 genome
AF:
0.000420
AC:
64
AN:
152212
Hom.:
0
Cov.:
32
AF XY:
0.000376
AC XY:
28
AN XY:
74414
show subpopulations
Gnomad4 AFR
AF:
0.00147
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.000193
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.0000147
Gnomad4 OTH
AF:
0.000474
Alfa
AF:
0.000229
Hom.:
0
Bravo
AF:
0.000544
Asia WGS
AF:
0.000289
AC:
1
AN:
3478
EpiCase
AF:
0.00
EpiControl
AF:
0.0000593

ClinVar

Significance: Conflicting classifications of pathogenicity
Submissions summary: Uncertain:1Benign:2
Revision: criteria provided, conflicting classifications
LINK: link

Submissions by phenotype

not provided Uncertain:1
Uncertain significance, criteria provided, single submitterclinical testingEurofins Ntd Llc (ga)Aug 24, 2016- -
not specified Benign:1
Likely benign, criteria provided, single submitterclinical testingGeneDxFeb 15, 2018This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -
Arthrogryposis, distal, type 1A Benign:1
Benign, criteria provided, single submitterclinical testingLabcorp Genetics (formerly Invitae), LabcorpDec 19, 2023- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.59
CADD
Benign
2.5
DANN
Benign
0.78
RBP_binding_hub_radar
0.97
RBP_regulation_power_radar
2.7

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs76414035; hg19: chr9-35684289; API