The Leukemia & Lymphoma Society - Fighting Blood Cancers
15 Replies Last post: Dec 7, 2009 10:47 AM by PhilB   1 2 Previous Next
Trey   622 posts since
Mar 27, 2009
Currently Being Moderated

Nov 7, 2009 11:18 AM

T315i Translocation -- Options for Treatment

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:

http://www.medicalnewstoday.com/newssearch2.php?q=T315i&sitesearch=www.medicalnewstoday.com%2Farticles&channel=1651883988&client=pub-1971793357249522&forid=1&ie=ISO-8859-1&oe=ISO-8859-1&flav=0000&sig=vptscazCworEUP7D&cof=GALT%3A%2300A12A%3BGL%3A1%3BDIV%3A%23FFFFFF%3BVLC%3A990099%3BAH%3Acenter%3BBGC%3AFFFFFF%3BLBGC%3AFFFFFF%3BALC%3A333399%3BLC%3A333399%3BT%3A444444%3BGFNT%3A00A12A%3BGIMP%3A00A12A%3BFORID%3A11&hl=en&domains=www.medicalnewstoday.com&sa=Search

 

Clinical trial drugs include:

 

ARIAD AP24534

http://www.drugs.com/clinical_trials/new-study-ariad-scientists-offers-insights-into-design-small-molecule-resistant-leukemia-2185.html

http://www.ariad.com/wt/tertiarypage/kinase_inhibitors

(Dr Druker is working on this drug with ARIAD)

 

Omacetaxine mepesuccinate (semi-synthetic homoharringtonine, HHT)

http://gyncancers.asco.org/ASCO/Abstracts+%26+Virtual+Meeting/Abstracts?&vmview=abst_detail_view&confID=55&abstractID=35906

 

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.

BethG   65 posts since
Apr 7, 2009
Currently Being Moderated
1. Apr 10, 2009 12:17 PM in response to: Trey
Re: T315i Translocation -- Options for Treatment

Slowly raising my hand...I'm a T315i CMLer...I need to start my own thread...thanks for posting this info Trey.

mic   76 posts since
May 8, 2009
Currently Being Moderated
2. Oct 10, 2009 6:39 AM in response to: BethG
Re: T315i Translocation -- Options for Treatment

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

PhilB   236 posts since
Apr 7, 2009
Currently Being Moderated
3. Oct 10, 2009 8:55 AM in response to: mic
Re: T315i Translocation -- Options for Treatment

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:

  • What clinical trials are currently available in NSW and how promising are they? (If your dr doesn't know then get a second opinion!)
  • What are the risks of delaying transplant to try a clinical trial - can you afford to give one a try with transplant as a fallback position?

Best of luck and keep fighting

 

Phil

mic   76 posts since
May 8, 2009
Currently Being Moderated
4. Oct 11, 2009 4:06 PM in response to: PhilB
Re: T315i Translocation -- Options for Treatment

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

PhilB   236 posts since
Apr 7, 2009
Currently Being Moderated
5. Oct 12, 2009 7:04 AM in response to: mic
Re: T315i Translocation -- Options for Treatment

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

mic   76 posts since
May 8, 2009
Currently Being Moderated
6. Oct 28, 2009 7:44 PM in response to: PhilB
Re: T315i Translocation -- Options for Treatment

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.

 

  

mic   76 posts since
May 8, 2009
Currently Being Moderated
8. Nov 16, 2009 5:05 PM in response to: Trey
Re: T315i Translocation -- Options for Treatment

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?

mic   76 posts since
May 8, 2009
Currently Being Moderated
10. Nov 16, 2009 10:00 PM in response to: Trey
Re: T315i Translocation -- Options for Treatment

I read this aticle which is a bit of a worry.

http://www.sciencedaily.com/releases/2009/08/090811143542.htm

PhilB   236 posts since
Apr 7, 2009
Currently Being Moderated
11. Nov 17, 2009 3:19 AM in response to: mic
Re: T315i Translocation -- Options for Treatment

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

PhilB   236 posts since
Apr 7, 2009
Currently Being Moderated
13. Dec 6, 2009 4:23 PM in response to: Trey
Re: T315i Translocation -- Options for Treatment

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.

Amanda Murray   15 posts since
Dec 5, 2009
Currently Being Moderated
14. Dec 7, 2009 9:02 AM in response to: Trey
Re: T315i Translocation -- Options for Treatment

What is T315i translocation? Amanda

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