tregalizumab tregalizumab tregalizumab is an immunomodulator. it is also known as bt-061. tregalizumab binds to domain 2 of cd4, and activates regulatory t cells (tregs). tregalizumabmonoclonal antibodytypewhole antibodysourcehumanizedtargetcd4clinical dataother namesbt-061atc codenoneidentifierscas number1207446-68-1 nchemspidernoneunii43d26mk176 ny (what is this?) (verify)