Please check the following web sites for information about myeloma and its treatments:
www.myeloma.org
http://northtexas.myeloma.org/mm101.pdf
www.leukemia-lymphoma.org
www.multiplemyeloma.org
http://themmrc.org
www.mmsupport.net
And there are a lot of others if you do a search. The IMF site (the first on the list) has a lot of information available on line or in booklet form for free. The North Texas support group, has compiled their "MM101" articles that also give a lot of good starter info.
Stem cell transplants (SCT) were considered the "standard of care" but more and more patients are choosing to postpone their SCT until later and depend on the newer drugs for treatment. It has become a controversy among the experts. Be sure that you understand your options before deciding what to do. Since your Mom's mm was caught early, she has time to make this decision - don't be rushed into something. (As a disclosure: I did have an auto SCT about 1 year after being diagnosed so I am not against them. I just think people should understand their options.)
An autologous (auto) SCT uses your own harvested stem cells and is usually the first option for transplants. The idea is that they can give you a mega-dose of chemo (usually melphalan) to kill the mm cells and then "rescue" you by replacing your stem cells to give you a jump start to recovery. Without the SCT, there would be a much higher chance that you would die from the chemo.
Sometimes a tandem (or double) transplant is done. In this case, the first auto SCT is done as usual and approx. 3-6 months later a 2nd auto SCT is done. This seems to be the most advantageous to people who do not get a great response from the 1st SCT. A 2nd auto SCT done at a later time (years later) is considered an independent treatment and it is estimated that the remission time from this type of 2nd SCT will be about 1/2 of what you got from the 1st one.
An allogeneic (allo or mini-allo) SCT uses the harvested stem cells from a donor instead of your own. The best option is to get cells from an identical twin. The next best is from a family member -- siblings have the best chance of being a match (25% per sibling). And if these options are not available, you can get a stem cell donation from an unrelated donor. There are millions of people who have done preliminary testing and volunteered to be on the donor list so your chance of finding a match is pretty good. (They have found a 10 out of 10 HLA match for me.)
Allo SCTs have a lot more risk than auto SCTs but they also offer the best possible chance for a "cure". Both have risks and neither have any guarantees. My auto SCT gave me a very slight response that only lasted 3 months. Allo SCTs are being considered more of a treatment of last resort now days.
Hope this helps a bit. Please spend some time checking out all the info that is available out there on the WEB. It is a great resource.
Janet (in Idaho)