NCIt definition : A specializing role which may be used to override Gene_Has_Abnormality that has been
asserted for the gene class. This role is used to establish a link between a specific
allele and genetic or molecular abnormalities that have been observed in human cells
and tissues associated with cancer or another disease of interest. The domain and
range for this role are 'Gene' and 'Molecular Abnormality', respectively.;