TY - JOUR T1 - NAtalizumab risks AU - Kuehn BM Y1 - 2010/03/24 N1 - 10.1001/jama.2010.301 JO - JAMA SP - 1139 EP - 1139 VL - 303 IS - 12 N2 - Natalizumab is approved by the FDA for the treatment of multiple sclerosis and Crohn disease. PML is a rare and deadly neurological infection caused by the JC virus, a nearly ubiquitous and usually benign virus that typically affects immunosuppressed individuals. The disorder is also associated with use of natalizumab, and the FDA has received 31 reports of such cases. Because of the risks, natalizumab is currently only available for use through a carefully monitored prescribing program. SN - 0098-7484 M3 - doi: 10.1001/jama.2010.301 UR - http://dx.doi.org/10.1001/jama.2010.301 ER -