obsolete contextual allele true The notion of a 'contextual allele' derives from the ClinGen Allele model. Here, each genetic allele in a patient corresponds to a single 'canonical allele', which in turn may aggregate any number of 'contextual allele' representations that are may be defined against different reference sequences. Accordingly, many contextual alleles can describe a single canonical allele. For example, the contextual alleles “NC_000013.11:g.32319070T>A” and “NG_012772.3:g.8591T>A” both describe the same underlying canonical allele, a single nucleotide variation, in the BRCA2 gene. An informational artifact that describes a canonical allele by defining its sequence and position relative to a particular reference sequence. http://dataexchange.clinicalgenome.org/allele/resource/contextual_allele/ No longer needed by ClinGen for their interpretation models, and will likely be replaced in ClinGen and elsewhere by VMC/GA4GH modeling constructs. Former axiom: denotes some 'obsolete_canonical allele' The notion of a 'contextual allele' is taken from the ClinGen Allele model (http://dataexchange.clinicalgenome.org/allele/). It is implemented in GENO to provide an ontological representation of this concept that will support data integration efforts, but may be replaced by should an IRI become available from the ClinGen model. ClinGen Allele Model (http://dataexchange.clinicalgenome.org/allele/)