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                                                                Synonyms: AN100226 | anti-alpha4 integrin | anti-VLA4 | Tysabri®
                                 natalizumab is an approved drug (FDA (2004), EMA (2006)) Compound class: 
                                                            Antibody
                                 
                                    
                                        Comment: Natalizumab was the first migration-inhibitory biological drug to be approved for inflammatory diseases. It targets α4β1 integrin (VLA-4) on leukocytes to block interaction with vascular cell adhesion molecule 1 (VCAM-1) on inflamed endothelium, thus inhibiting leukocyte extravasation into sites of inflammation. It is active in peripheral tissues and the central vervous system.  Targeting cell migration-related molecules in immune conditions (and cancer) is regarded as a valid approach for the development of novel anti-inflammatory therapeutics [3]. The design and synthesis of this antibody was originally described in a 1997 publication [2]. Biosimilars: The first natalizumab biosimilar was approved by the FDA in August 2023 and by the EMA a month later. Like the originator/reference agent, Tyruko® (natalizumab-sztn; Sandoz Inc.) is indicated for relapsing forms of multiple sclerosis and moderate-severe active Crohn's disease (when conventional therapies, including TNF-α inhibitors, are inadequate or not tolerated).   View more information in the IUPHAR Pharmacology Education Project: natalizumab | 
| Classification  | |
| Compound class | Antibody | 
| Approved drug? | Yes. US FDA (2004) | EU EMA (2006) | 
| International Nonproprietary Names  | |
| INN number | INN | 
| 7716 | natalizumab | 
| Synonyms  | 
| AN100226 | anti-alpha4 integrin | anti-VLA4 | Tysabri® | 
| Database Links  | |
| Specialist databases | |
| IMGT/mAb-DB | 75 | 
| Reactome Drug   | R-ALL-9679737 | 
| Reactome Reaction   | R-HSA-9679740 | 
| Other databases | |
| GtoPdb PubChem SID | 178103204 | 
| PubChem SID | 178103204 | 
| Search PubMed clinical trials | natalizumab | 
| Search PubMed titles | natalizumab | 
| Search PubMed titles/abstracts | natalizumab | 
| Wikipedia | Natalizumab |