I was diagnosed 11/10 and am on 400mg Gleevec. At the time of my bone marrow biopsy, the bcr/abl was measured at 17.09%. I had my first PCR test a couple of weeks ago and was told that bcr/abl measured .666%. My oncologist said he has to consult with colleagues to interpret these results and will let me know next week sometime. As you can imagine, being new to this, I am anxious. Is this a 90% reduction? I consulted with a transplant specialist at the request of my oncologist. He explained that I needed to have a 2 log reduction by 12 months and a 3 log reduction by 18 months. When I asked him to explain this, he said 2 log reduction meant a 200 fold reduction. I am to have the PCR test every 90 days. Should the decrease be consistent each quarter or does the bcr/able decrease more quickly early in treatment or later in treatment? Are these results good? Any explanations or information would be so appreciated.