CK5/6 and EGFR - CMF vs. AC
Comments
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Hi all,
Please see this study that indicates that True Basal Breast Cancer responds better to non-Anthracyclines than to Anthracyclines. Apparently the test for True Basal Breast Cancer should include CK5/6 and EGFR. If ER-, PR-, HER-, either CK5/6+ or EGFR+, then that is called True Basal. Has any one else had this extended test done? If so, did you get Anthracycline or non-Anthracycline based regimen (e.g. CMF)?
http://www.asco.org/ASCOv2/Meetings/Abstracts?&vmview=abst_detail_view&confID=65&abstractID=35150
Love,
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When I asked my onc about testing my cancer to see if it was the basal type, she told me it was not necessary as my treatment plan would not change. Although I was not happy with her response, I then decided not to pursue it as I felt I might not be able to mentally handle it if I knew I had a basal tumor, so I just let it go, hoping that the 4 DD AC and the 4 DD Taxotere ( I have my last taxotere this coming Thursday then on to rads) that I have had will do the trick. I hate this triple negative cancer and am still having a difficult time with trying to stay positive throughout all of this. I pray as time goes by that I develop some sort of acceptance of my diagnose and learn to cope with it better. I hate living with this fear that I can never seem to put to bed.
Linda
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Hey Unkle---
Wanted to bump and also post here.
I think I already mentioned my tests were negative for 5/6 and patchy positive 25% for EGFR.
I begged for the tests--it was not too easily forthcoming. I am about to be hit with a big bill for it too.
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Hi Ms. Bliss,
We too are encountering challenges in finding information on these tests and the TOP2A test. Maybe the Anthracycline lobby is hard at work? Once they have completed the study NSABP 46 (TC +/- Avastin vs. TAC), I am hoping it will provide conclusive evidence on the appropriateness of TOP2A marker to predict efficacy of Anthracyclines.
Where did you get the test done? How long did it take for the results?
Regards,
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Bump.....
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Bump ....
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Hi Unkle--I never received a notice of your post, so sorry for not answering.
I had my test done at MD Anderson and it took a few days. I was in a position to beg for the testing because some issues had cropped up at my consult.
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Okay--I have to ask. Who's the wife?
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Thanks Ms. Bliss. I'm doing ok. Getting AC #3 + Avastin/Placebo on Monday.
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I all-
I am a TNC dx 2/06 I had those tests done. My pathologist was a friend and encouraged me to send out my specimen to a place outside Chicago. I was suspicious for anigolymphatic positive TOPO II @ 77% and my KI67 was 83%. I have urged friends to get those tests done. I have gone to their appts. with them and discussed the reason it is important. One surgeon didn't know about it but did as we asked. It has been helpful in treatment. The word needs to get out.
I am a member of the medical profession and am dismayed at the lack of understanding over these tests. Either way it is how we accumulate knowledge, facts, statistics for future reference. You have to push harder at times but keep pushing.
Best to you all
psp2pdx
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Dear PSP2PDX,
How long does the test take? Do you have to send a tissue sample (fresh or 2 month old slide from surgery ok?) or blood or what? Can you explain what specifically the result of TOP II @ 77% mean?
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I looked around after reading your post, agreeing with both you and others that these specialized studies may be helpful in your personal plan.
I found these labs and specifically will link the CK5/6 page. They perform EGFR too:
http://www.mayomedicallaboratories.com/test-catalog/Overview/82296
http://www.aruplab.com/guides/ug/tests/arup005.jsp
You'd have to do further investigation as to whether you and your doctor feel comfortable with them. Certainly Mayo reference labs is well known (no personal affiliation). Most local and certainly big hospitals have contracts with these reference laboratories. This allows your doctor to write the prescription for blood tests, hospital draws and sends off. Since your inquiring about tests run on parrafin blocks of tumor, the pathologists who read you slides would need to be involved to order the tests and arrange for them to be sent in most circumstances.
psp2pdx, nice to have you on board here. Always great to hear real life applications and encouragements for some of the newer cutting edge studies. It's a tad troubling that we patients hear and read and ask about them, but I get over that real fast.
best to everyone,
Tender
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We each have to do our part here. When you read something here look up the information if you don't understand it google is good, then follow responsible links. Mayo, Sloan Kettering, most major institutions have a web site you can ask questions on. It's work but it is doable.
KI 67 is an index for proliferation (cell) generally most fall in the 15%-20% range
TOPO II positivity showed that Adriamycin was the drug of choice for me. My tests were almost 4 years ago. You are hearing about Adriamyacin being used less often now. It was the right choice for me at that time. TNBC have different options.
There are new drugs being used and coming out.
I'm still cancer free today. Remember we are all our own statistic!
It' been almost 4 years and we are hearing more about those tests. There are newer tests now as scientists follow the threads. There are docs who don't think the tests are necessary. I can tell you that all the medical journals are talking about the molecular biology of tumors - what profile your tumor has helps with treatment. Remember information is coming out faster but not necessarily disseminated quickly.
If you are an information junkie then go for it. If you feel better handing the reins over to your doc then that's ok too. We all have to take responsibility for ourselves and what our comfort zones are. Fear can make you crazy. I don't know how much knowledge a person needs as it can be overwhelming. THATS the tough part, how much is enough?
Good luck
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Thanks Diane....
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