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Monoclonal antibody
TypeWhole antibody
SourceHumanized (from mouse)
TargetCD3 receptor
Clinical data
ATC code
  • none
CAS Number
  • none

Visilizumab (tentative trade name Nuvion, PDL BioPharma Inc.) is a humanized monoclonal antibody. It is being investigated for use as an immunosuppressive drug in patients with ulcerative colitis and Crohn's disease. Visilizumab binds to the CD3 receptor on certain activated T cells without affecting resting T cells. It is currently under clinical studies for the treatment of ulcerative colitis and Crohn's disease.[1]

PDL BioPharma, Inc. canceled production of visilizumab following its Phase II/III clinical trials, citing its inefficacy and poor safety profile compared to other drugs on the market as the major reasons.[2] Nevertheless, clinical trials continue for various diseases like multiple myeloma[3] and diabetes mellitus type 1[4][5] as of July 2009.

Visilizumab has also been radiolabelled with technetium-99m for imaging T cells.[6]


  1. ^ "PDL BioPharma, Development Pipeline - Nuvion (visilizumab)". Archived from the original on 2007-09-15. Retrieved 2008-02-11.
  2. ^ "PDL Lands in a Hazard". 29 August 2007. Retrieved 2009-05-27.
  3. ^ Clinical trial number NCT00938626 for "Treated T Cells Followed by a Stem Cell Transplant in Treating Patients With Multiple Myeloma" at
  4. ^ Kaufman A, Herold KC (May 2009). "Anti-CD3 mAbs for treatment of type 1 diabetes". Diabetes/Metabolism Research and Reviews. 25 (4): 302–6. doi:10.1002/dmrr.933. PMID 19319985. S2CID 36595661.
  5. ^ Clinical trial number NCT00378508 for "Anti-CD3 mAb Treatment of Recent Onset Type 1 Diabetes" at
  6. ^ Malviya G, D'Alessandria C, Bonanno E, Vexler V, Massari R, Trotta C, et al. (October 2009). "Radiolabeled humanized anti-CD3 monoclonal antibody visilizumab for imaging human T-lymphocytes" (PDF). Journal of Nuclear Medicine. 50 (10): 1683–91. doi:10.2967/jnumed.108.059485. PMID 19759100. S2CID 31980716.