Tositumomab
Tositumomab is a murine monoclonal antibody which targets the CD20 antigen produced in mammalian cell. It was combined with iodine-131 to produce a radiopharmaceutical for unsealed source radiotherapy, Iodine-131 Tositumomab (branded as Bexxar), for the treatment of non-Hodgkins lymphoma. It is classified as a IgG2a lambda antibody.
| Monoclonal antibody | |
|---|---|
| Type | Whole antibody |
| Source | Mouse |
| Target | CD20 |
| Clinical data | |
| Trade names | Bexxar |
| AHFS/Drugs.com | Monograph |
| MedlinePlus | a609013 |
| ATC code | |
| Identifiers | |
| CAS Number | |
| DrugBank | |
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| UNII | |
| KEGG | |
| ChEMBL | |
| Chemical and physical data | |
| Formula | C6416H9874N1688O1987S44 |
| Molar mass | 143860.04 g·mol−1 |
| (what is this?) (verify) | |
The drug combination was developed by Corixa which was purchased by GlaxoSmithKline in 2005. It was sold for about $25,000 for one round of treatment. Bexxar competed with Zevalin, until the former's discontinuation in 2014.
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