<n0:ComplexDefinition xmlns:n0="http://ncicb.nci.nih.gov/xml/owl/EVS/ComplexProperties.xsd#"><n0:def-definition>An orally bioavailable retinoid acid receptor (RAR) alpha agonist with potential antineoplastic activity. Retinoid analogue NRX 195183 binds to and activates RAR alpha, modulating the transcription of genes responsible for cell differentiation and proliferation, which may result in cell differentiation, decreased cell proliferation, and the inhibition of tumorigenesis. Encoded by the RARA gene, RAR alpha is a nuclear receptor and a member of the steroid receptor superfamily.</n0:def-definition><n0:def-source>NCI</n0:def-source></n0:ComplexDefinition>