Your PCR is 0.03 %. You would need your PCR to be < 0.01% for at least two years before trying treatment free remission (TFR). ~50% of patients who try TFR at this point have successful outcomes (no CML return). They are functionally cured.
What does functionally cured mean ...why not just "cured"?
It means that their PCR continues to be below detection (< 0.01%), but CML could always come back in the absence of imatinib (or other TKI's). So CML patients like us have to continue to be monitored with regular PCR testing. Once a month for the first year and then less frequently thereafter.
Why no cure as in - no more testing, no more CML?
Because cancer - including leukemia is an immune system failure. And TKI's do not treat the immune system. Until there is an immune system cure (i.e. vaccine), a true cure for CML is in the future, not available today. But it is promising.
Treatment free remission is the next best thing. Not having to take a toxic chemical like imatinib (or any of the other TKI's) is still a good thing. And for practical purposes, if CML does not return - it is very likely gone. (meaning: under control by your immune system once again and you are cured).