Hi Deborah
it does sound strange that your mums consultant did not offer an opinion,but I suppose if the trials are on offer at this hospital,it could be seen to either not supporting the trials,against his own believe.So I think your mum has to be very careful here.
If you go to the home page there is MUKS three trials,plus if you type trials in information it will tell you about other trials going on!!!!
I do know about Velcade,in my husbands case reduced cells from 80% down to 6% in bones,we now wait to see if after SCT it maintains this position.
Your mum needs advice before making a decision,some times advice is not impartial.she needs someone with her,ask to see the consultant again,I find if you look them in the eye and ask them simple,if it was you,what you would do???they are only human,and you must make a judgement on there answer.
When we asked a question,how long,we were told 7 years with trials,did not believe a word she said,but still went on trials:-P
Hope this might help.Eve