Mutation Insertion MESH:D016254 Gene Insertion http://purl.bioontology.org/ontology/MESH/D016254 Sufficient Mutagenesis where the mutation is caused by the introduction of foreign DNA sequences into a gene or extragenic sequence. This may occur spontaneously in vivo or be experimentally induced in vivo or in vitro. Proviral DNA insertions into or adjacent to a cellular proto-oncogene can interrupt genetic translation of the coding sequences or interfere with recognition of regulatory elements and cause unregulated expression of the proto-oncogene resulting in tumor formation. SCDO:0001388 Insertion Mutation