Another posting started a discussion about the T315i mutation. This probably deserves a separate discussion for others who come along later. T315i is probably the toughest kinase mutation to deal with, and renders current CML drug treatment ineffective (as of early 2009). New drugs are coming along that show promise, and some are in clinical trials. If someone has the T315i mutation, there are generally two options: Transplant (BMT), or a clinical trial with a drug under development.
An overview of drugs under development is here:
Clinical trial drugs include:
ARIAD AP24534
http://www.ariad.com/wt/tertiarypage/kinase_inhibitors
(Dr Druker is working on this drug with ARIAD)
Omacetaxine mepesuccinate (semi-synthetic homoharringtonine, HHT)
DCC-2036 and DCC- 2157:
http://www.deciphera.com/BCR-ABL.html
KW-2449
http://bloodjournal.hematologylibrary.org/cgi/content/abstract/114/8/1607
Transplant is an option, but developmental drugs are showing promise, so it is not an easy decision. Clinical trials help pave the way for future treatment, but also carry risks for the participants. Make sure you understand those risks. Later stage clinical trials (Phases II and III) often have reduced those risks to some degree.
Who on this site has the T315i? Please fill us in on your experiences.
Slowly raising my hand...I'm a T315i CMLer...I need to start my own thread...thanks for posting this info Trey.
hi guys I been reading a lot on here and it is good to see that everyone is helping each other in this crisis.
I just wanted to tell all of you about myself. I live in sydney Australia, Im 49 year old male and have cml but have been told this week that I a "315 mutation" and there is no medication to treat it.
My doctor told me that I need to not waist anymore time and I should have a BMT but need to find a donor.
I have been doing some searching on the net and found a site: http://www.chemgenex.com/wt/No%20Template/pr_1244507677
who make a drug to treat this. Has anyone know if this is a avenue to take before having a BMT.
Cheers
Hi Mic,
This is the Omacetaxine mepesuccinate (semi-synthetic homoharringtonine, HHT) Trey refers to in his post above - if you follow his link it contains some detailed results on how well it's been doing - promising, but a long, long way from a 100% treatment.
Survival rates for transplants have improved greatly in the last few years, but it's definitely not a walk in the park. Have you talked to your doctor about why he doesn't want you 'wasting time' with any more drugs? Are you still in chronic phase?
You're faced with a difficult decision between going straight to transplant or trying a clinical trial first, but it is still a decision. The key questions you need to ask your dr are:
Best of luck and keep fighting
Phil
Phil
From what I was told I'm still in chonic stage.
But I can see that this medication "omacetaxine" that is on trial and not reconized by Australia doctors I think my specialist will not want anything to do with this as I mention to him about the Fred Hutchinson Cancer Research Center and he said he will not help me wilh this as Australia can perform the BMT here.
But from what I have read about the Hutch they have a less complication record then anyone else in the world so this has put me in a rock and hard place in what to do.
I emailed the CEO of ChemGenex and they said they are willing to give me the medication on compassionate grounds which is great in this department.
What do you think about this
thanks
Hi Mic
I'm not aware that we have anyone on here who has any direct experience of Omacetaxine and I'm not a doctor so I can't advise you one way or the other. All I would say is that even though you have the offer of the drug that's no use unless you can find a medical team who you trust that are prepared to give it a go and monitor it closely whilst you search for a donor.
If you do get to try the Omacetaxine and get positive results then there will be a constant series of decisions to be made on whether the results are good enough to keep postponing transplant. You'd need to be confident in your team and to weigh up the likely success rates very carefully.
Whichever route you end up going I wish you the very best of luck and please keep us informed. Sorry I can't be of more help.
Phil
Yesterday was my start of the new drug Omacetaxine that has to be injected twice a day for seven days a month which I have to injected myself.
Hopfully this will buy me time until they confirm a positive donor which they have found and are doing last testings to confirm a positive typing.
The only thing is in the last 4 weeks I have been getting pins and needles all over and my thighs have some pain, so this drug will show me if it is working or not.
So far so good with the drug and I'll keep everyone updated with this.
There is another drug being developed called KW-2449 that shows promise in overcoming T315i in early trials:
http://bloodjournal.hematologylibrary.org/cgi/content/abstract/114/8/1607
Had blood counts checked after course of Omacetaxine and plattlets have droped from 75x10 to 0.9x10 and the doctor wanted me to have a plattlet transfusion.
Check a coulple days later and they went up to 35x10 but then drop a couple days later to 19x10 and yesterday they dropped down to 10x10.
So I got more plattlets. I will be going back on friday to check again on the counts and in †he mean time I have an appointment with the transplant doctor on thursday to talk to me about BMT.
I'm wondering if anyone would know what is Bone marrow failure syndrome and has it got to do if you have a plattlets transfusion before a BMT?
Bone marrow failure syndrome is when the bone marrow is not able to make enough blood cells. It is usually either inherited or a result of myelodysplastic syndrome (MDS). It is not normally associated with CML. But CML drugs can sometimes suppress blood cell production. Your problem with low platelets is most likely due to the Omacetaxine, since low platelets is listed as the #1 side effect of the drug. You may need to just continue platelet transfusions for a while and see if the issue resolves itself. It should not affect a possible BMT decision:
I read this aticle which is a bit of a worry.
http://www.sciencedaily.com/releases/2009/08/090811143542.htm
Hi Mic,
I can understand your concerns, but the point in the article about it not being applicable to blood cancers (like CML) does make sense. If you do end up needing a BMT the whole point is to completely eradicate any vestige of your current stem cells as the only way to get rid of the CML. This means you won't have any immune system left to do any rejecting of the new cells. Post transplant you should be 100% donor immune system.
With BMTs the key problem is not to stop your old immune system from rejecting the donated cells, but to stop your shiny new immune system from 'rejecting' the rest of your body - GHD. Fortunately they are getting much better at this!
All the best and keeping my fingers crossed that the drugs mean you never need a BMT anyway
Phil
Here is the 2009 ASH Conference paper on ARIAD AP24534 Phase I clinical trial results to date:
Interesting to see that Omacetaxine is now being referred to by a trade name 'Omapro'. Could be a sign it's about to go mainstream. If so that's great news for people with this mutation.
What is T315i translocation? Amanda