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Monoclonal antibody
TypeSingle-chain variable fragment
SourceHumanized (from mouse)
TargetComplement component 5
Clinical data
ATC code
  • none
Legal status
Legal status
  • investigational
  • none
 ☒N☑Y (what is this?)  (verify)

Pexelizumab is a drug designed to reduce side effects of coronary artery bypass grafting[1] and angioplasty,[2][3] among other types of cardiac surgery. It is a single chain variable fragment of a monoclonal antibody targeted against component 5 of the complement system.[4]

Current status[edit]

Alexion, the developer of pexelizumab, stopped development when the phase 3 trial indicated the heart-attack drug is no better than placebo.[5]


  1. ^ Pexelizumab in Patients Undergoing Coronary Artery Bypass Grafting With Cardiopulmonary Bypass
  2. ^ Pexelizumab in Conjunction With Angioplasty in Acute Myocardial Infarction
  3. ^ Testa, L; Van Gaal, WJ; Bhindi, R; Biondi-Zoccai, GG; Abbate, A; Agostoni, P; Porto, I; Andreotti, F; et al. (2008). "Pexelizumab in ischemic heart disease: a systematic review and meta-analysis on 15,196 patients". The Journal of Thoracic and Cardiovascular Surgery. 136 (4): 884–93. doi:10.1016/j.jtcvs.2007.12.062. PMID 18954626.
  4. ^ Mathew, JP; Shernan, SK; White, WD; Fitch, JC; Chen, JC; Bell, L; Newman, MF (2004). "Preliminary report of the effects of complement suppression with pexelizumab on neurocognitive decline after coronary artery bypass graft surgery". Stroke: A Journal of Cerebral Circulation. 35 (10): 2335–9. doi:10.1161/01.STR.0000141938.00524.83. PMID 15331798.
  5. ^ [1] Analysis: Alexion's pexelizumab fails