MedImmune has begun dosing patients in the first Phase I trial of CAM- 3001, a fully human MAb targeting the alpha subunit of the granulocyte-macrophage colony stimulating factor receptor (GM-CSFR). The study is designed to evaluate the safety and tolerability of single doses of CAM-3001 in patients with rheumatoid arthritis (RA), and represents the first clinical trial in which a MAb targeting GM-CSFR is being investigated in this population. MedImmune currently holds exclusive, worldwide right...