Hi John,
I cannot really add very much to the excellent advice you have already been given, and would only add that you should not allow yourself to worry about this cancer 'spreading'.
CML is, if you like, a liquid rather than a solid tumour and as David said- it does not metastasize like solid tumours. Rather- if left untreated- it goes through 3 stages. The first is chronic phase and is the most indolent of the three. This is the phase that most people are diagnosed in and the phase that is most successfully treated with TKI therapies. I am assuming you are in chronic phase.
CML develops when a kind of white blood cell at a very early stage of cell development (possibly a stem cell) for some reason sustains damage which results in changes in 2 (namely numbers 9 and 22) of the 23 pairs of chromosomes that we all have.
#9 and #22 swop parts, each one with the other. Chromosome 9 contains the ABL gene which transfers and fuses to the BCR (break point cluster) region on chromosome 22.
The resulting fusion of BCR and ABL forms a new abnormal gene on chromosome #22 which is then known as the Ph chromosome.
Whatever it is that 'triggers' such an event we can only guess at (it is not inherited and is not passed on to your children).
Nevertheless, a lot is known about Ph+CML and how it behaves because it has been studied extensively since the 1960's.
It is a fairly uncomplicated cancer as it only has this one molecular abnormality (the fused gene- BCR/ABL1), rather than a complex of events and abnormalities that are the cause other leukaemias and cancers.
Your doctor has already outlined the goals and timelines that you/he should concentrate on. For the moment you just need to know that the prospect for you living your normal lifespan is excellent.
Glivec (imatinib) by now has a long track record and has been an unprecedented success in the world of cancer therapy- in fact it turned the whole cancer research world on its head because its use has proved that when you target and inhibit the abnormal cell signal- in this case produced by the PH+ cells - you can stop the processes that causes these cells to reproduce in an uncontrolled way. In other words TKI drugs turn the on switch to off.
They do this by blocking a protein (confusingly also called Bcr/Abl) produced by the BCR/ABL1 gene (as contained on the PH chromosome) - the signal that instructs the cell to divide is 'switched off'.
Hence the Ph+ cells die and their population is reduced, eventually to very low levels, over time on TKI therapy. Normal cells are no longer impeded and return to their normal levels as needed for a healthy immune system to function.
Glivec and the other 2nd/3rd generation TKIs(tyrosine kinase inhibitors) such as dasatinib, nilotinib, bosutinib (and the newer ponatinib) are extremely successful at controlling this disease for the majority- in fact because of these drugs the number of people now living 'normal' lives is growing year on year.
Take some time and do watch the video's on this site- (including the excellent patient testimony ones like Chris's). There is a lot of information out there- but try to take it slowly and do ask on this forum if you need any help.
Your wife will worry of course, but if you can learn together it will help you both take the strain and life will improve.
Fear is the big elephant in the room... but as someone else has already said, knowledge is power and I fully agree with Andrew Schorr of Patient Power (who make a lot of the excellent videos that we feature on our video page) "sometimes knowledge is the best medicine".
Best wishes to you,
Sandy