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Maintenance therapy with deletion 17p13?

by ping on Thu Feb 19, 2015 6:54 am

I am a multiple myeloma patient with deletion 17p13 and extramedullary tumors in my back. I have had cyclophosphamide-Velcade-prednisone induction and will soon have an auto stem cell transplant (SCT).

Do people have experience with what would be considered proper maintenance therapy in this high-risk situation?

It seems most places recommend "aggressive treatment" in high-risk situations.

  1. Would it be ridiculous to not have maintenance and simply wait for relapse?
     
  2. If maintenance, which drug regimen would be most appropriate?
     
  3. Authors of a study at Emory had good results with VRD maintenance and claimed that extended use of alkylators "may contribute to the selection and evolution of more aggressive and resistant plasma cell clones". Do people know if this fact about alkylators is true and if one should then for example avoid cyclophosphamide? (This question is more technical of course than the above 2 questions.)
Thanks for any feedback.

ping
Name: ping
When were you/they diagnosed?: December, 2014
Age at diagnosis: 54

Re: Maintenance therapy with deletion 17p13?

by Ian on Fri Feb 20, 2015 4:28 am

Hello Ping,

Welcome to the forum.

You ask a number of good, and difficult, questions. To answer them better, it might help to know a little more information.

For example, what sort of response have you had to your therapy so far? Do you still have the extramedullary tumors?

Also, what maintenance regimens will be available to you? Is VRD maintenance even an option?

Ian

Re: Maintenance therapy with deletion 17p13?

by Multibilly on Fri Feb 20, 2015 9:26 am

Ping,

It sounds like you are referencing the paper covered in this Beacon article:

"Extended Post-Transplant Treatment With Revlimid, Velcade, And Dexamethasone Yields High Survival Rates In High-Risk Myeloma," The Myeloma Beacon, Nov 26, 2013.

You can get a full pdf of the paper here:

http://tinyurl.com/phzmxqa

Note that Dr. Kaufman (one of the authors of the paper) is a regular contributor here in the Beacon forum.

Multibilly
Name: Multibilly
Who do you know with myeloma?: Me
When were you/they diagnosed?: Smoldering, Nov, 2012

Re: Maintenance therapy with deletion 17p13?

by ping on Fri Feb 20, 2015 10:23 am

Thanks for the responses.

Ian,

Response to induction has been good. IgG M-component (M-spike) was 35 g/L (3.5 g/dL) at diagnosis and went down to 3 g/L (0.3 g/dL) after induction. Removal of stem cells next week and auto SCT comes in a month.

The extramedullary tumors were on the MRI taken just two weeks ago.

I don't yet know what maintenance regimens will be available or if VRD is in fact an option, as we have not yet discussed this yet. I'm just preparing in advance of that discussion.

Multbilly,

In fact, I got my information from the full article rather than the Myeloma Beacon link.

Thanks a lot, Ping

ping
Name: ping
When were you/they diagnosed?: December, 2014
Age at diagnosis: 54

Re: Maintenance therapy with deletion 17p13?

by Dr. Ken Shain on Fri Feb 20, 2015 8:38 pm

Maintenance therapy remains in its infancy in its use in multiple myeloma, although there is very compelling data demonstrating excellent disease control and, in some studies, improved overall survival.

In patients with high risk disease – especially deletion 17p – I personally feel that it is critical be on maintenance therapy. Generally, I recommend at least Velcade-based maintenance. In certain patients, I will place them on both Revlimid and Velcade under these conditions.

Regarding the Cytoxan question - I think that we could debate that for a while. I will simply state that VCD (Velcade, Cytoxan, dexamethasone) is an excellent regimen for induction therapy, es­pecially for those with renal issues at diagnosis, disease with plasmacytoma, or where rapid dis­ease control is necessary. I think that avoiding alkylators in high-risk myeloma is not nec­es­sary. Cytoxan is an alklylating agent, as is melphalan, the drug used in high-dose melphalan and autol­o­gous stem cell transplant (HDM-ASCT), and HDM-ASCT remains a critical com­po­nent in the treatment of high-risk multiple myeloma.

Dr. Ken Shain
Name: Ken Shain, M.D., Ph.D.
Beacon Medical Advisor

Re: Maintenance therapy with deletion 17p13?

by ping on Sun Feb 22, 2015 3:11 am

Thank you very much for your input on this, Dr. Shain.

In those situations where maintenance is adopted, is it usually (1) until relapse, or (2) a certain time period and if so, how long usually?

Thanks, Ping

ping
Name: ping
When were you/they diagnosed?: December, 2014
Age at diagnosis: 54

Re: Maintenance therapy with deletion 17p13?

by Dr. Ken Shain on Sun Feb 22, 2015 10:07 am

Nothing is black and white. However, the prevailing data suggest maintenance to progression, and that is the way I practice. But it is important to note that maintenance therapy has to be balanced with quality of life, so symptoms (toxicities), marrow function, and the need for supportive care matter, as well. Financial aspects also can play a role. Dose reductions also can be considered.

I try to at least get 2 years of maintenance therapy and, if the patient is tolerating the therapy well, will continue beyond the 2 years. As with everything in multiple myeloma, changes will need to be made, and each patient will have their own course.

Please let us know if you have any further questions/concerns.

And, of course, best of luck.

Dr. Ken Shain
Name: Ken Shain, M.D., Ph.D.
Beacon Medical Advisor

Re: Maintenance therapy with deletion 17p13?

by ping on Sun Feb 22, 2015 11:09 am

Dr. Shain,

Thanks again for your input and view on this question and explaining your own approach.
And the issue of balance with quality of life that you mention makes sense.

Concerning the "prevailing data suggesting maintenance" that you refer to, is it easy to give links to some appropriate sources? Two sources are given in Multbilly's response to this question earlier, but I guess there are a number of others.

Again, thanks for your valuable input on this.
Ping

ping
Name: ping
When were you/they diagnosed?: December, 2014
Age at diagnosis: 54

Re: Maintenance therapy with deletion 17p13?

by DanielR on Fri Feb 27, 2015 3:56 pm

Ping,

As has probably been made clear to you by now, there is no real consensus on Myeloma treatment, though, admittedly, there are a number of protocols. Like you, I have 17p deletion. I had a SCT in June of 2013. My transplant doctor recommended Velcade only for maintenance based on the clinical trial reviewed in the link below from the journal Blood. This was not the protocol my local oncologist had planned, but after reading the research provided by my trans­plant doctor, he agreed that the research was compelling.

I went on Velcade shortly after my return from the SCT. Within a few months, I asked about reducing the dose. Again, my oncologist was very hesitant, but my M-spike was not measur­able and all my numbers (except RBC) were normal, so he finally agreed.

Near the end of the year, I began asking about discontinuing the Velcade altogether. Again, my oncologist was very resistant initially, but finally agreed that my blood work was good enough to give it a try. So, for over a year now, I have been off all cancer meds, with the exception of a very low dose methylprednisolone for energy.

My numbers continue to be good and, yes, I'm tested regularly and monitored by my oncol­o­gist, but so far, so good. Since my condition was so severe when I was first diagnosed, and none of my doctors at the time expected me to live, I am clearly a bit of an exception. So I am not sug­gesting that you follow my protocol, but I would suggest that you discuss it with your own on­col­o­gist.

Aloha and best of luck,
Daniel



K Neben et al, "Administration of bortezomib before and after autologous stem cell transplantation improves outcome in multiple myeloma patients with deletion 17p", Blood, Jan 26, 2012 (link to full text)

Moderator's Note: This study is summarized in the Beacon news article: "Velcade-Based Therapy May Improve Survival Of Multiple Myeloma Patients With Deletion In chromosome 17" (Feb 24, 2012).

DanielR
Name: Daniel Riebow
Who do you know with myeloma?: Self
When were you/they diagnosed?: 12/2012
Age at diagnosis: 59

Re: Maintenance therapy with deletion 17p13?

by Leslie Weatherby on Sat Feb 28, 2015 12:34 pm

I too have myeloma with deletion 17p13. I had an ASCT in March 2011 and started Revlimid 10 mg as maintenance therapy in February 2012. It has kept my light chains stable for these 3 years with minimal side effects.

Just another example of many different treatments in this complex disease.

Leslie Weatherby

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