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A free, web-accessible comprehensive list of breakpoints from three classes of somatic mtDNA rearrangements: circular deleted (deletions), circular partially duplicated (duplications) and linear mtDNAs. Currently, MitoBreak contains >1,400 mtDNA rearrangements from seven species (Homo sapiens, Mus musculus, Rattus norvegicus, Macaca mulatta, Drosophila melanogaster, Caenorhabditis elegans and Podospora anserina) and their associated phenotypic information collected from nearly 400 publications. The database allows researchers to perform multiple types of data analyses through user-friendly interfaces with full or partial datasets. It also permits the download of curated data and the submission of new mtDNA rearrangements. For each reported case, MitoBreak also documents the precise breakpoint positions, junction sequences, disease or associated symptoms and links to the related publications, providing a useful resource to study the causes and consequences of mtDNA structural alterations.

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MitoBreak classification

  • Animals
    • Drosophila melanogaster
    • Homo sapiens
    • Mus musculus
    • Rattus norvegicus

MitoBreak specifications

Restrictions to use:

MitoBreak support


  • Filipe Pereira <>


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Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP), Porto, Portugal

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