Some of you have contacted me privately to ask for clarification of some of the NICE ADC point so that you can make comments on the NICE website.
I have sent this to one person just now and tried to answer some of his particular points and add a little more.
although I am still working on CML Supports submission (deadline 7th December) I think you should really use your personal viewpoints when commenting to NICE.
Your own views need to be expressed and I cannot help you with that.. nor should I. You all know the evidence in real every day clinical practice is there. You are patients, you are the ones who are expert on how these drugs affect you as patients... this is powerful information and NICE need to hear it expressed by the people that benefit and have most to lose should these 2nd Generation drugs of high dose imatinib become unavailable and people are instead offered... Interferon Alpha or best supportive care.
However as a guide you might find the following helpful, please use your own words when drafting your comments both to NICE and to your MP's.
1.
the evidence for both 2nd generation drugs efficacy in dealing with some of the imatinib resistant mutations that are apparent in some patients is well documented both in clinical trials of both drugs and in clinical practice.
NICE' appraisal committee seem to be saying that they do not accept the way the trials have been designed stating that because the data is from open label trials (drug is clearly identified) then it follows that the data are flawed because there is a possibility that the clinician would be biased in favour of one drug over the other !...
That is why they view the data as unreliable and would prefer to see double blinded trials... drug is not identified to the clinician or the patient.
Of course as both patients and clinicians know... all the drugs in question have differing side effects and also nilotinib has a completely different regime of administration based on fasting 2 hours before and 1 hour after taking the dose.. this is 2 x daily.. so double blind trials are/would be unworkable on that point alone.
NICE seem to have ignored the existence of mutational analysis and the clinical consequence imatinib resistant mutations...
2.
Why do they make the comparison with Interferon, when Interferon is of little use to CML patients?
Although they note that in clinical practice Interferon alpha is very rarely used now, as very few patients had/have a cytogenetic response over time, but the side effects were/are very severe for most and were/are disabling for many.
This is not a life saving option for the majority of CML patients but it is cheaper.
However the extra costs of interferon come in when you consider the side effects... lack of quality of life... lack of ability to continue to work and all those wider social costs to society... and lack of cytogenetic response for majority and therefore lack of overall progression free survival.
You might also remember that the Scottish Medicines Consortium have approved these drugs for use in chronic stage CML.
the All Wales Medicines Strategy Group approved them for CP and AC patients (or maybe all phases/), also the London Cancer New Drugs Group have given a positive appraisal.
You could try a google search on all the above for more details
Most recently the Peninsula Health Technology Commissioning Groups (PHTCG) produced a positive appraisal of both drugs for use in IM Resistant and IM intolerant CML patients who live within the Devon PCT areas.... 4 pct's covering Devon and Cornwall ... see the newswire section of CML Support Group website for details dates etc.
Devon PCT have told me that they will persist with their guidance and wait for (and then follow) the TAG produced by NICE in April 2010 (TAG= Technology Appraisal Guidance and represents final policy)
The numbers of CML patients who show resistance to imatinib is small...but this does vary, depending on sources used, from between 23% - 49% ...
Both drugs and HD IM are recommended by the European Leukaemia Network (ELNet) for use in IM resistant/intolerant CP CML if stem cell transplant is not appropriate.
They are also both useful in AC although the percentages decline depending on disease load. Dasatinib is effective to some extent in Blast Crisis and has been approved for use in BC. Nilotinib is not approved for BC.
Hope this gives some background and is helpful.