<n0:ComplexDefinition xmlns:n0="http://ncicb.nci.nih.gov/xml/owl/EVS/ComplexProperties.xsd#"><n0:def-definition>A role used to assert a direct relationship between a gene and a disease. This restriction should only be used when an abnormality in a gene a causative event for a disease. The domain and range for this role are 'Gene' and 'Disease or Disorder', respectively.</n0:def-definition><n0:def-source>NCI</n0:def-source></n0:ComplexDefinition>