347 confirmed cases of natalizumab-associated PML. #MSBlog #MSResearch
"As of the 31st March 2013 there are 347 confirmed cases of PML as a result of Natalizumab treatment. This is on a denominator of over 112,000 treated MSers with more than 260,000 years of natalizumab exposure. The mortality or death rate is 23%; in other words 79 MSers have died as a result of PML."
Labels: Natalizumab, PML, PML Risk update