I was on the Sanofi SAR302503 trial for 11/2 years. For at least 6 months I reported having
pressure type headaches, like my head was being squeezed iin a vise. The drug trial was stopped due to brain lesions. If Sanofi was so concerned about patient well being I would think that we would be subjected to diagnostic imaging to find out how many others are also affected. I guess the truth is that nobody having any responsibility really wants to now.
This is a JAK2 inhibitor and they do cross the BBB