NCIt definition : A humanized monoclonal antibody targeting the beta7 subunit of the heterodimeric integrins
alpha4beta7 and alphaEbeta7, with anti-inflammatory activity. Etrolizumab binds to
the beta subunit of the alpha4beta7 and alphaEbeta7 integrins in the gastronintestinal
tract blocking their activity. This prevents integrin-mediated leukocyte migration
to and accumulation in sites of inflammation.;