Details of Disease

General Information of Disease (ID: DIS7PCBA)

Disease Name TPM2-related myopathy
Synonyms autosomal dominant TPM2-related myopathy; congenital myopathy related to TPM2; TPM2-related myopathy; TPM2 myopathy
Definition
A congenital myopathy of the musculoskeletal system that covers a wide spectrum of phenotypes and is caused by pathogenic variants in the skeletal muscle beta-Tropomyosin gene. These variants lead to a variety of overlapping adult onset and congenital myopathies characterized by muscle weakness, amyotrophy, hypotonia, myopathic facies, scoliosis, and sometimes contractures among other phenotypes. Histologic findings on skeletal muscle biopsy are variable with nemaline and intranuclear bodies, cap-like lesions, core-like lesions, fiber-type disproportion, and dystrophic features all observed to some degree.|The most penetrant phenotype among all of the TPM2-related myopathy disease entities is muscular weakness. Notably, other developmental disorders such as distal arthrogryposis have also been reported in association with TPM2 mutations. While phenotypic and mechanistic similarities demonstrate that the TPM2-related myopathy disorders share a similar pathogenic mechanism, these developmental disorders characterized primarily by contractures are not considered part of the same spectrum as this entity.
Disease Hierarchy
DIS2BIP8: Congenital nervous system disorder
DISLSK9G: Congenital myopathy
DISHOITJ: Qualitative or quantitative defects of tropomyosin
DISD715V: Hereditary neurological disease
DIS7PCBA: TPM2-related myopathy

Molecular Interaction Atlas (MIA) of This Disease

Molecular Interaction Atlas (MIA)
This Disease Is Related to 1 DOT Molecule(s)
Gene Name DOT ID Evidence Level Mode of Inheritance REF
TPM2 OTA1L0P8 Definitive Autosomal dominant [1]
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References

1 Technical standards for the interpretation and reporting of constitutional copy-number variants: a joint consensus recommendation of the American College of Medical Genetics and Genomics (ACMG) and the Clinical Genome Resource (ClinGen). Genet Med. 2020 Feb;22(2):245-257. doi: 10.1038/s41436-019-0686-8. Epub 2019 Nov 6.