No mutuations, will still develop ovarian cancer?

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Hi all, just got to know that I was tested negative for all 28 genes related to hereditary cancer (Myriad MyRisk Test), no mutations and significant variants identified! But do I still have higher chance to develop other hormone-related cancers like ovarian cancer since I am highly ER/PR+ positive? Thanks!!

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  • mustlovepoodles
    mustlovepoodles Member Posts: 2,825
    edited January 2017

    My understanding is that hormone positive breast cancers do not raise your risk of ovarian cancer. Those individuals who have certain gene mutations, like the BRCA and PALB2 and others, do have increased risk so they are usually recommended to have their ovaries removed.

  • farmerlucy
    farmerlucy Member Posts: 3,985
    edited January 2017

    I spoke to a gyn onc about that, and if you are negative for the mutations poodles mentioned your risk is quite low. There is some discussion that removal of just the tubes can prevent ovarian cancer since it is thought that many OC start in the fallopian tubes. I had my ovaries removed at 55, and it was still tough dealing with the loss of estrogen

  • BarredOwl
    BarredOwl Member Posts: 2,433
    edited March 2018

    HI stephilosopy:

    That is good news.

    I would add that the absence of a pathogenic mutation by current multigene panel testing does not exclude the possibility of any heritable component. One reason is that specific test panels do not include all genes (known or unknown) that may confer increased risk of breast or other cancers. Importantly, a very strong family history of certain cancers may be indicative of increased risk, despite negative panel test results.

    Assume that one of the current multigene panel tests yields accurate negative results: "no mutation detected", plus no variants of unknown significance (also assume correct classification of such variants). "Detected" is a critical word, and what has been excluded is what has been specifically tested for. For example:

    (a) Different multigene panels include different gene selections and different numbers of genes. Thus, in the typical case, not all known predisposition genes may have been tested.

    For example, the current MyriadPro myRisk panel includes more than 25 genes:

    https://new.myriadpro.com/products/myriad-myrisk/myrisk-gene-table/

    Ambrygen's "BreastNext" panel currently includes 17 genes, but it includes MRE11A, NF1 and RAD50 which do not appear to be included in the above Myriad panel.

    http://www.ambrygen.com/tests/breastnext

    Many other panels are available. Genetic counselors choose test panels based on the results of the individual's genetic / familial risk assessment and other factors.

    (b) We do not know all of the genes that when mutated may contribute to risk of breast cancer or other cancers, either alone or in combination. Obviously, such genes are not included in current panels.

    (c) While specific gene rearrangements may have been tested, there may be other gene rearrangements in certain test genes that were not probed or detected.

    (d) There is some (probably low) possibility of an undetected mutation located in areas of the genes that were not tested (e.g., certain non-coding control regions or certain intron sequences).

    This is a rapidly evolving area and as more information becomes available, patients may seek further counseling to discuss possible additional testing in the future (if indicated). See for example:

    Ruddy (2016): "Cancer Survivorship Care: An Opportunity to Revisit Cancer Genetics"

    http://ascopubs.org/doi/full/10.1200/jco.2015.63.5375

    (Free pdf available under "PDF" tab)

    Be sure to obtain a complete copy of your test report and all associated documentation for your review and records. Please discuss the implications of your test results, including any caveats and limitations, in light of your personal medical and family history, with your genetic counselor.

    BarredOwl

  • stephilosphy00
    stephilosphy00 Member Posts: 386
    edited January 2017

    Thank you so much for all your quick responses! I don't have family history of any kinds of cancer which is correlate with the genetic result.


  • stephilosphy00
    stephilosphy00 Member Posts: 386
    edited January 2017

    Post my question to HopkinsBreastCenter "Ask an Expert" forum, here is Lillie's answer -

    Getting other female related cancers isn't associated with you being ER positive for breast cancer. you have a slightly higher risk than the general population of women for getting another primary cancer of some kind, and ovarian happens to be one of those cancers. not enough of a worry to get ovaries out however.

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