indium (111in) biciromab indium (111in) biciromab indium (111in) biciromab (inn, trade name fibriscint, developed by centocor) was a drug targeting fibrin, a protein involved in the clotting of blood. it was the fab' fragment of a mouse monoclonal antibody labelled with the radioisotope indium-111 for the diagnosis of thromboembolism, but was withdrawn during clinical trials. indium (111in) biciromabmonoclonal antibodytypefab' fragmentsourcemousetargetfibrin ii, beta chainclinical datatrade namesfibriscintpregnancycategory n/a atc codenonelegal statuslegal status withdrawn identifierscas number138783-13-8 nchemspidernonekeggd03111 y ny (what is this?) (verify)