Diagnostic Test for breast cancer recurrence

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http://www.financialexpress.com/article/healthcare...


Sapien Biosciences partners with OncoStem Diagnostics to develop breast cancer recurrence diagnostic test

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  • besa
    besa Member Posts: 1,088
    edited February 2015

    "Other recurrence prediction tests such as Oncotype DX (Genomic Health) and Mammaprint (Agendia) have been launched globally and have had significant impact in the industry even though these tests only apply to Stage 1 patients who are lymph node negative, hormone receptor positive. OncoStem's test is a significant innovation in that it can predict recurrences in both lymph node and hormone receptors negative or positive patients and is applicable across all stages of cancer."

    The information is this article is not entirely correct -- the Oncotype DX test is being used for hormone receptor positive, in some cases node positive women and for women with greater than stage 1 bc. (I had an oncotype DX test over 7 years ago with stage 2 bc....). See links below:

    http://breast-cancer.oncotypedx.com/en-US/Professional-Invasive/WhatIsTheOncotypeDXBreastCancerTest/WhichPatients.aspx

    http://breast-cancer.oncotypedx.com/en-US/Professi...


  • cp418
    cp418 Member Posts: 7,079
    edited February 2015

    Yes - initially when Oncotype was made available in 2006 it was only offered for node negative patients. I was 1 node positive and denied this test. They changed the criteria I believe the following year. So for me it has been a guessing game and I continue to take an AI.

  • wallycat
    wallycat Member Posts: 3,227
    edited February 2015

    I was under the impression that the oncotype was used to determine how chemo-friendly the tumor was.

    The "guess" for recurrence was for 10 years...and I would have to have memory refreshed, but the comparison was with tamoxifen or with tamoxifen and chemo. The hope to know if any of our cancers will recur I think is still not do-able. If these new prognosticating tests do something different from oncotype (besides looking at more genes), it would be interesting.

  • coraleliz
    coraleliz Member Posts: 1,523
    edited February 2015

    Perhaps in 1 1/2yrs, when my 5years is up, this will be "validated" & then there's the BCI

  • farmerlucy
    farmerlucy Member Posts: 3,985
    edited February 2015

    Very interesting! Thanks CP for keeping us informed!

  • SpecialK
    SpecialK Member Posts: 16,486
    edited February 2015

    Mammaprint can be used for stages 1 & 2, it can be used for both ER/PR+ or ER/PR- in any combination, for Her2+ patients, and for those who have up to three positive nodes, so this article is incorrect in regards to who the Mammaprint, and Oncotype Dx, tests are appropriate for. 

  • KSil
    KSil Member Posts: 56
    edited February 2015


    Hi SpecialK,

    You seem really knowledgeable about the Mammaprint. I had the Mammaprint done when I was clinically staged as a stage 1 or 2, turned out I was actually stage 3a. I had the Mammaprint done and that came back as high risk, which has always confused me. My pathology report showed my lobular carcinoma tumor was 95% ER positive, 50% Progesterone positive, KI-67 was less than 5% and I had four positive nodes (2 of which had extracapular extension). I have figured than I have luminal A, but my high risk Mammaprint results confuse me. Do you, or does anyone else on these boards know why I may have a high risk...are there other gene factors that put me at a higher risk? Sorry to ask, but this is always at the back of my mind. My diagnoses was April 2013, so I am close to 2-years out and so far, so good. Thank God. :)

    Karen

  • SpecialK
    SpecialK Member Posts: 16,486
    edited February 2015

    Ksil - I also had Mammaprint testing, it was done on one of my biopsy samples because my BS is involved in a trial with Agendia.  Since Mammaprint is specifically looking at the genetic aspect of your tumor, and how those genes are driving the tumor growth, it seems sensible to me that this is what drove your recurrence score higher - it is the purpose of the test itself.  Agendia advertises that the score is based on the specific biology of your sample, and high risk means that you have a 29% chance of recurrence when compared with a group of patients who had no additional treatment.  It would be assumed that treatment would reduce that risk number.  Keep in mind that because Mammaprint only has low and high scores, no intermediate, it is not that surprising that with your specifics you would end up with a high score.  I did as well - I assume the Her2+ and positive nodes had an effect on the score - and because this was a biopsy sample we had no knowledge about the nodes and Her2 status at the time of Mammaprint testing.  Have you been able to discuss your full Mammaprint info with either your BS or MO?  Even though it is two years later and you have been NED (congrats and yay!!!) you might rest easier if you have a full explanation of your Mammaprint results now.  Do you have your complete grading info, specifically your mitotic score?  Even though your grade was a 2, your mitotic rate may have been the highest of the three grading scores which could be in conflict with your Ki%.  It is somewhat discordant that your Ki% was low, your grade intermediate, and yet you had 4 positive nodes - half with ECE, and a fairly large mass, so the genetics of your tumor may have been a factor. 

  • KSil
    KSil Member Posts: 56
    edited February 2015

    Thank you, SpecialK. :)

    I must have read my pathology report 100 times, and yet I don't recall seeing the breakdown of my grade 2 tumor. I will recheck when I get home. I had a double mastectomy 8-years ago (for 3 cm area of DCIS, grade 3 with comedo necrosis and a bit of LCIS in left breast) and a tram flap reconstruction. I got a new primary of ILC on the same side as original cancer, in the little remaining breast tissue I had left, and the ILC grew into the reconstructed flap. I had to get the flap completely removed and I now have implants, so I basically lost my stomach muscles and ended up with implants anyway (sigh).  I forgot to mention that I was HER negative, and my breast surgeon suggests that the cancer was growing for about 3-years. I asked her why my luminal A tumor was considered high risk, per the Mammaprint, and her response was that the tumor was heterogenous and that the Mammaprint results pretty much meant that I would benefit from chemo (in my own mind I thought that ALL cancer is heterogenous) but I am no expert. I also thought (or like to think) that perhaps the Mammaprint factors in my DCIS 8-years ago and the fact that I was under 50 with my second breast cancer diagnosis. I am BRCA negative and breast cancer has never run in my family (mothers side, or fathers side).  I never did see an official Mammprint report, but will ask my BS for it on my next visit. Do you think it could be possible that a tiny LCIS cell grew over a period of 8-years and that my cancer was not a recurrance, but more residual? I've asked my doctors that question and they seem to think that it's a new primary. Guess I'll never really know for sure. The only thing I am sure of is that cancer sucks! lol

  • SpecialK
    SpecialK Member Posts: 16,486
    edited February 2015

    ksil - what you should see backing up the grade is an individual score from 1-3 for three categories - tubule formation, mitotic rate, and nuclear pleomorphism.  A total combined score of 3-5 equals grade 1, total combined score of 6-7 equals grade 2,  and 8-9 equals grade 3. I think you are correct in that you will never know if what you had was a recurrence or a leftover LCIS cell that slowly divided over time, and thus was residual.  That seems to be one of the biggest quandaries in breast cancer treatment - how do cells behave and why do people have a recurrence (or residual cells that start to grow) so many years later, despite treatment - and others do not.  I don't know if Mammaprint factors prior cancer in or is just looking at the genetics of the submitted sample - I tend to think it is the latter.  Mammaprint, and all other similar tests, are intended to be used as a tool and combined with factors like age, personal and family medical history, physical condition, co-morbidities, etc., when designing a treatment plan.  And I concur - cancer sucks!

  • KSil
    KSil Member Posts: 56
    edited February 2015

    Thank you again, SpecialK

    Here's to good health for all of us; and for some reason I am very optimistic that a cure to many terrible diseases (including breast cancer) is not too far off.

    Karen

  • SpecialK
    SpecialK Member Posts: 16,486
    edited February 2015

    Cheers to that!

  • wallycat
    wallycat Member Posts: 3,227
    edited February 2015

    Ksil, I am so sorry to read about the recurrence/new primary...whatever "they" define it as.

    If I were venturing a guess, I would say a new primary but what do I know. It is a tad unnerving to hear you had bmx for a non-invasive situation and still got an invasive cancer. I am deeply sorry. It freaks me out a bit since I did have invasive cancer and had bmx and there are really no tests being done on me. OY! Best to you.

  • KSil
    KSil Member Posts: 56
    edited February 2015

    Thank you, Wallycat. :)

    And I don't mean to scare anyone. Perhaps my situation was a bit different because my initial DCIS that was found in 2005 was found because I had a breast reduction surgery. The plastic surgeon did not take a mammogram prior to my reduction, and I was younger and never had a baseline mammogram prior to it. I was scheduled to have that surgery (like two-months in advance) and then I got a call from the office saying that someone postponed and that I could have the surgery the next week, and so I did. I'm thinking that there was never a clear view of exactly what was in my breast until the pathology determined I had a large area of DCIS with LCIS in there as well. To be honest, I never even imagined I could have breast cancer at that time...I was just turning 40 and there was no history of breast cancer in my family. Surprise, surprise. I have to say that I always worried about not having that baseline mammogram.

    Karen

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