I have been on Revlimid since I finished my initial phase of treatment (Revlimid/Velcade/dexamethasone) in July 2011. This was part of a Phase 3 clinical trial. At that time I was pronounced in "Very Good Partial Remission" and started a "maintenance" schedule of 25 mg Rev. and dexamethasone. Gradually my doctor and I decided to take me off the dex as I was having many side effects, and we reduced the amount of Rev. to 15 mg a day for 21 days. I've been on this dosage schedule since about January 2012.
During the time since then all of my "numbers" have been in the normal range (calcium, kidney function, CBC, etc), except for the Kappa Free Light Chains, which have been very very slowly going up and got out of the normal range in December 2012. (right around the time I stopped taking the dex.)
When I was diagnosed they were at about 16; my latest blood work showed them at about 4. The Lambda levels are normal. My paraprotein levels have always been very low or zero and are currently around .3.
I have no other health issues and have had no fractures or bone problems since I was first diagnosed (when I broke my scapula.) There are still lesions in my arms but the orthopedic oncologist has not seen any new ones or any worsening.
Given this continued slow increase in the Kappa chains, my doctor feels that the Revlimid may not be working any longer. At today's visit, he suggested stopping the Rev. for a month and seeing what the blood work looks like next month. At that point I assume we'll have to discuss next steps, but I really don't know how to make this decision. As I see it I have so many options (not that I'm complaining about that, mind you) but which is best? If the Kappa number is up again, but only slightly, is it safe to wait a while longer before starting any new treatment? He and I both agree that we don't want to let things get to the point at which my bones are in trouble. But, we of course don't know exactly what that point is.
a) I could go back on a higher dose of Rev. plus dexamethasone and live with the side effects. The plus side of this would be that I would still be in the clinical trial and thus the cost to me would be low.
b) I could try one of the newer drugs like Pomalyn, or go back to Velcade, which I also responded well to.
c) I could think about a SCT (I have had the harvest done.) My doctor says that as I am "young" (54) it's best to do a SCT earlier rather than later. I know many people come through this just fine but I am really conflicted about it. I asked him about studies I've read that have said that some people have just as good results from drug therapy now as from the SCT. He says that these are mostly cases of older people who may not be great candidates for SCT.
Can anyone help me sort through these options and make an intelligent decision? And apologies that this is so long
Karen
