What we are studying
The main purpose of this study is to see how well people tolerate receiving the study drug (caplacizumab) compared with people who receive placebo (a product that does not contain any active ingredients and looks identical to the study drug). This will allow a comparison of the effects produced by the study drug. In addition, the study will see if caplacizumab helps to prevent a worsening of your TTP episode and helps to restore normal levels of platelets in your blood.
You will not receive any payment for your participation in the study. You may be reimbursed for transportation to and from the site expenses for participation in this study.