As of this time 1 in 4000 pple on Rituximab will get PML. They still dont have a way to test and to tell if you will be one of those that will die from it. Rituximab kills all the B cells in your immune system, they are the one that keeps oppportunistic infections at bay. With no more B cells left, they become active again and attack the body. If you happen to have any one of those infections that are in your brain, well, good luck I guess.
Otherwise it would be one of the more promising ways to cure HIV.
Otherwise it would be one of the more promising ways to cure HIV.