Well, it looks like I've been quite fortunate: Cycles 1 and 2 of Year 1 have been completed without noticeable side effects. Phew! Cycle 2 offered a couple of small things that made me wonder if they were side effects: 1) what looked like a small cold sore on my lip; I've never had one before, and it only lasted about three days, so I'm not sure. Could have just been chapped; and 2) trouble sleeping during the time I was taking the pills; this could be purely coincidental, as insomnia comes around every now and then.
Next steps: new baseline MRI next week, followed by blood work two months after last dose, and again six months after first dose. I gather that for the next couple months I'm still at increased risk of infection while my immune system rebuilds itself. Am crossing my fingers that my good fortune holds!