Arcitumomab

**Semantic type:** Amino Acid, Peptide, or Protein|Immunologic Factor|Pharmacologic Substance

**Definition:** A murine IgG monoclonal Fab' fragment antibody directed against carcinoembryonic antigen (CEA), a protein that is overexpressed by many tumor cell types. For tumors that overexpress CEA, technetium-99m labeled arcitumomab may be used as an adjunct diagnostic imaging tool to obtain prognostic information following resection and to monitor for recurrent disease. (NCI04)

**Synonyms:** - ARCITUMOMAB - CEA-Scan - IMMU-4 - Immunoglobulin G 1 (mouse monoclonal IMMU-4 Fab' fragment gamma-chain anti-human antigen CEA), disulfide with mouse Monoclonal IMMU-4 Light Chain