NM_152263.4(TPM3):c.763G>A (p.Asp255Asn) AND multiple conditions

Germline classification:: Uncertain significance (1 submission)
Last evaluated:: Feb 2, 2023
Review status:: 1 star out of maximum of 4 stars
criteria provided, single submitter

Somatic classification of clinical impact:: None
Review status:: (0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided

Somatic classification of oncogenicity:: None
Review status:: (0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided

Record status:: current
Accession:: RCV003797683.2

Allele description [Variation Report for NM_152263.4(TPM3):c.763G>A (p.Asp255Asn)]

NM_152263.4(TPM3):c.763G>A (p.Asp255Asn)

Gene:

TPM3:tropomyosin 3 [Gene - OMIM - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

1q21.3

Genomic location:

Preferred name:

NM_152263.4(TPM3):c.763G>A (p.Asp255Asn)

HGVS:

NC_000001.11:g.154170412C>T
NG_008621.1:g.26722G>A
NM_001043351.2:c.652G>A
NM_001043352.2:c.652G>A
NM_001043353.2:c.652G>A
NM_001278188.2:c.454G>A
NM_001278189.2:c.652G>A
NM_001278190.2:c.589G>A
NM_001278191.2:c.382G>A
NM_001349679.2:c.652G>A
NM_001364679.2:c.763G>A
NM_001364680.2:c.763G>A
NM_001364681.2:c.763G>A
NM_001364682.1:c.763G>A
NM_001364683.1:c.652G>A
NM_152263.4:c.763G>AMANE SELECT
NM_153649.4:c.652G>A
NP_001036816.1:p.Asp218Asn
NP_001036817.1:p.Asp218Asn
NP_001036818.1:p.Asp218Asn
NP_001265117.1:p.Asp152Asn
NP_001265118.1:p.Asp218Asn
NP_001265119.1:p.Asp197Asn
NP_001265120.1:p.Asp128Asn
NP_001336608.1:p.Asp218Asn
NP_001351608.1:p.Asp255Asn
NP_001351609.1:p.Asp255Asn
NP_001351610.1:p.Asp255Asn
NP_001351611.1:p.Asp255Asn
NP_001351612.1:p.Asp218Asn
NP_689476.2:p.Asp255Asn
NP_705935.1:p.Asp218Asn
LRG_681t1:c.652G>A
LRG_681t2:c.763G>A
LRG_681t3:c.652G>A
LRG_681:g.26722G>A
LRG_681p1:p.Asp218Asn
LRG_681p2:p.Asp255Asn
LRG_681p3:p.Asp218Asn
NC_000001.10:g.154142888C>T
NR_103461.2:n.747G>A

Protein change:

D128N

Molecular consequence:

NM_001043351.2:c.652G>A - missense variant - [Sequence Ontology: SO:0001583]
NM_001043352.2:c.652G>A - missense variant - [Sequence Ontology: SO:0001583]
NM_001043353.2:c.652G>A - missense variant - [Sequence Ontology: SO:0001583]
NM_001278188.2:c.454G>A - missense variant - [Sequence Ontology: SO:0001583]
NM_001278189.2:c.652G>A - missense variant - [Sequence Ontology: SO:0001583]
NM_001278190.2:c.589G>A - missense variant - [Sequence Ontology: SO:0001583]
NM_001278191.2:c.382G>A - missense variant - [Sequence Ontology: SO:0001583]
NM_001349679.2:c.652G>A - missense variant - [Sequence Ontology: SO:0001583]
NM_001364679.2:c.763G>A - missense variant - [Sequence Ontology: SO:0001583]
NM_001364680.2:c.763G>A - missense variant - [Sequence Ontology: SO:0001583]
NM_001364681.2:c.763G>A - missense variant - [Sequence Ontology: SO:0001583]
NM_001364682.1:c.763G>A - missense variant - [Sequence Ontology: SO:0001583]
NM_001364683.1:c.652G>A - missense variant - [Sequence Ontology: SO:0001583]
NM_152263.4:c.763G>A - missense variant - [Sequence Ontology: SO:0001583]
NM_153649.4:c.652G>A - missense variant - [Sequence Ontology: SO:0001583]
NR_103461.2:n.747G>A - non-coding transcript variant - [Sequence Ontology: SO:0001619]

Condition(s)

Name:: Congenital myopathy 4B, autosomal recessive
Synonyms:: Nemaline myopathy caused by mutation in the tropomyosin 3 gene; Nemaline myopathy 1, autosomal dominant or recessive
Identifiers:: MONDO: MONDO:0012239; MedGen: C5829889; Orphanet: 171433; Orphanet: 171439; Orphanet: 171881; OMIM: 609284

Name:: Congenital myopathy with fiber type disproportion
Synonyms:: Congenital fiber-type disproportion myopathy; Congenital Fiber-Type Disproportion
Identifiers:: MONDO: MONDO:0009711; MedGen: C0546264; Orphanet: 2020

Recent activity

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NADH dehydrogenase subunit 4 (mitochondrion) [Propithecus coquereli]
NADH dehydrogenase subunit 4 (mitochondrion) [Propithecus coquereli]
gi|194277539|gnl|NCBI_MITO|ND4_2270 |YP_002004590.1|

Protein
cytochrome c oxidase subunit III (mitochondrion) [Propithecus coquereli]
cytochrome c oxidase subunit III (mitochondrion) [Propithecus coquereli]
gi|194277536|gnl|NCBI_MITO|COX3_227 f|YP_002004587.1|

Protein
Human RP3 mRNA, complete cds
Human RP3 mRNA, complete cds
gi|413824|gb|U02556.1|HSU02556

Nucleotide

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV004587049	Labcorp Genetics (formerly Invitae), Labcorp	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015))	Uncertain significance (Feb 2, 2023)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]

Submission Accession

Submitter

Review Status
(Assertion method)

Clinical Significance
(Last evaluated)

Origin

Method

Citations

SCV004587049

Labcorp Genetics (formerly Invitae), Labcorp

criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))

Uncertain significance
(Feb 2, 2023)

germline

clinical testing

PubMed (1)
[See all records that cite this PMID]

Help

Summary from all submissions

Ethnicity	Origin	Affected	Individuals	Families	Chromosomes tested	Number Tested	Family history	Method
not provided	germline	unknown	not provided	not provided	not provided	not provided	not provided	clinical testing

Citations

PubMed

Sherloc: a comprehensive refinement of the ACMG-AMP variant classification criteria.

Nykamp K, Anderson M, Powers M, Garcia J, Herrera B, Ho YY, Kobayashi Y, Patil N, Thusberg J, Westbrook M; Invitae Clinical Genomics Group., Topper S.

Genet Med. 2017 Oct;19(10):1105-1117. doi: 10.1038/gim.2017.37. Epub 2017 May 11. Erratum in: Genet Med. 2020 Jan;22(1):240. doi: 10.1038/s41436-019-0624-9.

PubMed [citation]

PMID:: 28492532
PMCID:: PMC5632818

Details of each submission

From Labcorp Genetics (formerly Invitae), Labcorp, SCV004587049.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	PubMed (1)

Description

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. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt TPM3 protein function. This variant has not been reported in the literature in individuals affected with TPM3-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces aspartic acid, which is acidic and polar, with asparagine, which is neutral and polar, at codon 255 of the TPM3 protein (p.Asp255Asn).

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

Last Updated: Sep 29, 2024

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