I'm so sorry your son saw that platelet drop! I started with really high platelets, so the did drop a little, but still well within normal range. I had no major side effects. A little fatigue and GI issues, but really could be because of the cancer more than the treatment. Will they restart if his numbers come up? Hoping for the best for him. There are other new treatments on the horizon according to my oncologist! Maybe there's a great option out there!