Ocrelzumab/rebif trial

Hi, I’ve been offered a place to go on a trial - Ocrelzumab/rebif and just wondered if anyone was on the trial or anyone had any advice. I know that the minimum treatment I will get will be rebif. I have to wait for my current MRI results to see if I qualify for Tysabri. I’ve been diagnosed 8 months now and although I have symptoms like fatigue and numbness, my speech and cognitive abilities are still effected especially if I get tired or stressed and i cannot write very well -my last relapse was 11 months ago. Regards Bluebell