BC have Different Long-Term Recurrence Risks

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http://www.cancernetwork.com/breast-cancer/er-posi...

ER-Positive, Negative Breast Cancers Have Different Long-Term Recurrence Risks

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  • farmerlucy
    farmerlucy Member Posts: 3,985
    edited January 2016

    very interesting, and sobering.

  • JohnSmith
    JohnSmith Member Posts: 651
    edited January 2016

    Metastasis dormancy in ER+ is a challenge. This research article, here, echoes how these dormant cancer cells remain a major clinical issue.
    * Link fixed.

  • vlnrph
    vlnrph Member Posts: 1,632
    edited January 2016

    Thanks again to cp for keeping us up to date and JohnSmith for the background link. As I approach the 5 year milestone, recurrence due to tumor dormancy has been on my mind...

  • Fallleaves
    Fallleaves Member Posts: 806
    edited January 2016

    Interesting article cp418. JohnSmith, I couldn't click on your link (my computer wouldn't let me), any chance you could post the url?

  • cp418
    cp418 Member Posts: 7,079
    edited January 2016

    farmerlucy - patients tracked were from 1978 - 1985.

    "The obvious limitation of this trial is that the medications offered during the periods of diagnosis studied here are largely different from what is offered today, and thus extrapolation of these results may be difficult."

    Still, the differentiation between ER-positive and negative patients offers an opportunity, the authors wrote. "New targeted treatments and different modes of breast cancer surveillance for preventing late recurrences within this population should be studied," they concluded.



  • JuniperCat
    JuniperCat Member Posts: 658
    edited March 2016

    Annual Hazard Rates of Recurrence for Breast Cancer During 24 Years of Follow-Up: Results From the International Breast Cancer Study Group Trials I t... - PubMed - NCBI

    http://www.ncbi.nlm.nih.gov/m/pubmed/26786933/

  • JuniperCat
    JuniperCat Member Posts: 658
    edited March 2016

    excellent point, kayb...not sure why they didn't think of that...

  • Lily55
    Lily55 Member Posts: 3,534
    edited January 2016

    Well those recurrence rates were a lot lower than I expected to see.....

    There is a known difference in recurrence between lobular and ductal cancers, lobular tends to recur a lot more often after 10 years........maybe something to do with the fact it is often not such an aggressive cáncer, and the recurrence rates after 15 years seem very low........wonder if there is any more recent research........

    John I couldn´t open your link either, could you paste it on here when you get the chance please?

  • JohnSmith
    JohnSmith Member Posts: 651
    edited January 2016

    Sorry. The link is fixed above, but here's the Abstract.
    Metastasis Dormancy in Estrogen Receptor–Positive Breast Cancer

    Abstract: About 20% to 40% of patients with breast cancer eventually develop recurrences in distant organs, which are often not detected until years to decades after the primary tumor diagnosis. This phenomenon is especially pronounced in ER+ breast cancer, suggesting that ER+ cancer cells may stay dormant for a protracted period of time, despite adjuvant therapies. Multiple mechanisms have been proposed to explain how cancer cells survive and remain in dormancy, and how they become reactivated and exit dormancy. These mechanisms include angiogenic switch, immunosurveillance, and interaction with extracellular matrix and stromal cells. How to eradicate or suppress these dormant cancer cells remains a major clinical issue because of the lack of knowledge about the biologic and clinical nature of these cells. Herein, we review the clinical manifestation of metastasis dormancy in ER+ tumors, the current biologic insights regarding tumor dormancy obtained from various experimental models, and the clinical challenges to predict, detect, and treat dormant metastases. We also discuss future research directions toward a better understanding of the biologic mechanisms and clinical management of ER+ dormant metastasis.

  • Lily55
    Lily55 Member Posts: 3,534
    edited January 2016

    THank you - so therefore taking things that affect angiogénesis blood supply, like artemisinin and boost natural killer cells etc (which I know are all in the complementary medicine field) may well help........

    Presumably it also means that for someone like me, forced to wait YEARS for recon surgery, will be challenging my immune system with major surgery just when the risk of recurrence starts to rise

  • JuniperCat
    JuniperCat Member Posts: 658
    edited March 2016

    hi, kayb! I wouldn't call it self-serving (& why not discover more about your particular type of BC?) but just a natural tendency to find out what new research can shed light on treatments, survival rates, etc. I also feel like I'm a little bit in an odd area because of the PR- status of my tumor.

  • besa
    besa Member Posts: 1,088
    edited January 2016

    This study is very interesting but I feel we need to keep in mind that of course bc treatments are different now and current statistics may be different.

    The authors of the Journal of Clinical Oncology article noted "that the adjuvant therapies studies in these trials that accrued patients from 1978 to 1985 are not the same as those routinely offered to patients today. A significant improvement in breast cancer relapse-free survival was in fact shown for patients treated in the modern era compared with patients treated several decades ago, possibly related to the better efficacy of modern adjuvant treatment approaches."

    They discus the fact that the "ER-positive subgroup is highly heterogeneous" and the subpopulations (eg luiminal A or B) were not separated into different subpopulations "that could behave differently during extended follow-up."... "Human epidermal growth factor receptor 2 expression were not available" in their database and HER2 blocking antibodies were not approved by the FDA until the late 1990s.

    In addition when tamoxifen was given to ER positive patients in these studies (and it wasn't given to all ER positive patients) it was given for only either 6 or 12 months.

  • JuniperCat
    JuniperCat Member Posts: 658
    edited March 2016

    I don't often see too much info or research on ER+ PR- tumors

  • ShetlandPony
    ShetlandPony Member Posts: 4,924
    edited January 2016

    Lily55, my onc did say that surgery can cause cellular changes that promote metastasis. (This was in the context of why she was not recommending mastectomy for me at stage iv.) Also there is a thread on these boards about the type of anesthesia influencing the likelihood of mets. As in so much of bc treatment, there is a risk vs. benefit analysis to do, as well as figuring out whether/how research applies to you.

  • Lily55
    Lily55 Member Posts: 3,534
    edited January 2016

    THanks ShetlandPony, I so just want to feel whole again

  • JuniperCat
    JuniperCat Member Posts: 658
    edited March 2016

    Hi, Shetlandpony! I've never heard of surgery nor anesthesia causing cellular changes that can cause cancer to spread. Can you please provide more info or links? I find this to be somewhat surprising and I'd like to learn more about it. Thanks!

  • ShetlandPony
    ShetlandPony Member Posts: 4,924
    edited January 2016

    Ladies, I owe you an apology. I think my post above regarding cellular changes was irresponsible because I have no sources to cite and my onc's comments may not apply to all situations. It was something she said to me in answer to my asking her if I needed a mastectomy for the breast recurrence, stage iv. Her concerns and her recommendation for me to not have this surgery were for me with all my particulars, including the fact that I had been diagnosed with mets to three places. She said that mastectomy for stage iv was an area of discussion and that she was thinking of what she has personally seen in her practice. I do not believe there is a definitive answer on this question. *Plenty of oncs recommend reconstruction for their patients, especially stage I-III patients.*

    As far as anesthesia, elsewhere on these boards there are discussions of the effects of general anesthesia vs. nerve block plus propofol. They mention some sources. But again, I don't know of any practice-changing studies.

    https://community.breastcancer.org/forum/73/topics...

    (Edited to explain that I deleted my previous post because of the concerns I mention in this post. It is an interesting topic, but I don't want to cause anyone more doubt or fear.)

  • rozem
    rozem Member Posts: 1,375
    edited January 2016

    this is all very interesting

    so I get that I am going to be on some sort of anti hormonal for 10 years...but what happens after this? does this mean that the cells may "wake up" after that point since they were being kept in check by hormone therapy? and if that's the case can ever safely go off these if we are higher risk???

    also, if you had a pCR to neoadjuvant chemo and the cells in your tissue are dead, inactive or whatever then didnt that kill everything else or do cells survive elsewhere

    this sh** keeps me up at night!!!!

  • marijen
    marijen Member Posts: 3,731
    edited January 2016

    Shetland Pony you are right on both counts. I have read about the cellular changes and the anesthesia in recurrence. However, I did not keep the references. I think my BS wrote a paper on the anesthesia, I tried to find it a while back. There comes a point where the cancer mutates and one thing I remember reading is it can mutate so it doesn't need estrogen anymore to survive. That's why AI's lose their efficacy.

  • JuniperCat
    JuniperCat Member Posts: 658
    edited March 2016
  • Fallleaves
    Fallleaves Member Posts: 806
    edited January 2016

    Hi all, here's a thread on the topic of "Anesthesia and recurrence of cancer": https://community.breastcancer.org/forum/73/topics...

    It has a bunch of review articles including the one JuniperCat just posted. Essentially surgery creates a wound, and a lot of the factors that are upregulated to heal wounds are the same ones that drive cancer growth (not coincidentally one of the nicknames for cancer is "the wound that never heals"). Also, there's the belief that primary tumors may suppress micrometastases and circulating tumor cells, and once they are gone that suppressive effect is, too. And there's concern that surgical stress inhibits natural killer cells that are our body's defense against cancer.

    But of course surgery is vitally important in ridding ourselves of cancer, and to rebuild our bodies! So the point is not to scare anyone about surgery, but to encourage everyone to look at the available anesthetic choices and try and pick the ones that seem to counter the effects of surgery (like paravertebral nerve blocks, propofol, keterolac and other NSAIDs, etc.)


  • marijen
    marijen Member Posts: 3,731
    edited January 2016

    Thanks junipercat and fallleaves, I saved it this time. The main thing is we need our doctors to keep up on this stuff. I'm sure my surgeon does.

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