Breaking Research News from sources other than Breastcancer.org
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A Genetic Test Led Seven Women in One Family to Have Major Surgery. Then the Odds Changed.
Two sisters, their mother and aunts showed a mutation on a BRCA gene and an elevated risk of breast and ovarian cancer. But these interpretations can be revised.
Read in The Wall Street Journal: https://apple.news/Ap2sanVeJRkatMHZ2NLBF-Q
Shared from Apple News -
marijen, I read this article in the WSJ yesterday, and just read again the comments from readers.
It's disheartening, in so many ways.
The family involved seems to have not understood that genetic information is ever-changing - this should have been clearly explained to them by a genetic counsellor, as it was explained to me 14 years ago.
The articles notes "There are tens of thousands of BRCA variants and new research reveals that not all confer the same level of risk to a patient. Some gene variants “have intermediate or moderate levels of risk, not full-blown risk," says Fergus J. Couch, a professor at the Mayo Clinic, whose lab has worked on some of these studies.". Seriously, this is being presented as new news? I knew this from my own reading 14 years ago prior to my discussions with the genetic counsellor, and this was confirmed in that discussion. Anything I've read that mentions risk levels associated with the BRCA1 and BRCA2 mutations always presents a range of risk, never a single number.
The way the family feels now, and the way the story has been presented, indicates that some or all of the women regret their decisions to have prophylactic surgeries, based on the new information about their BRCA mutation. Well, what about the fact that they still have the family history of cancer? That hasn't changed. And it's not well explained that the new VUS status for their particular BRCA mutation does not mean that this mutation might not in fact present a high risk - VUS means that maybe it will or maybe it won't, and we just don't know yet. That's covered off in the article in one short sentence that's easy to miss. I appreciate that the family members are angry because they had these surgeries thinking their risk was much higher - but they are still high risk. And with their family representing such a large percent of the people with this mutation, and with so many of them having had prophylactic surgeries, at this point it may be very difficult to ever truly know what their risk really was.
It's mentioned in the article, but not emphasized, that changing the assessment of a genetic mutation from high risk to VUS status happens to only 1% of genetic mutations. So this cautionary tale about a very rare situation will scare some people away from genetic testing; not knowing their positive status and taking preventative action might lead to some deaths from cancers that could have been averted.
Then there are the letters. So little understanding of why people get genetic testing and why those who test positive for a high risk mutation often choose prophylactic surgery. No understanding that screening can miss some breast cancers and that even with extensive monitoring, sometimes breast cancers are not found when they are early stage, or that sometimes early stage breast cancer kills. One writer mentioned a 100% survival rate for breast cancer caught early and no one has contradicted her and provided the facts. A few people, all personally affected, have mentioned that there is no effective way to screen for ovarian cancer and that most ovarian cancers are found at Stage III or IV, but no one unaffected seemed to have any idea about this. One man mentioned that he is BRCA positive and has had breast cancer but every other writer seems to think this is a female issue.
I know how poorly educated the general public is about the realities of breast cancer so the fact that they are even more ignorant about genetic testing and the implications of being positive shouldn't surprise me, but it is demoralizing.
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This may have been posted before since it was in the news earlier this year, but I am just seeing it now, so thought I'd share.
Gain Fat—Lose Metastasis: Converting Invasive Breast Cancer Cells into Adipocytes Inhibits Cancer Metastasis
"Adipogenesis-inducing drug combinations repress metastasis in preclinical models"
"Delineation of the molecular pathways underlying such trans-differentiation has motivated a combination therapy with MEK inhibitors and the anti-diabetic drug Rosiglitazone in various mouse models of murine and human breast cancer in vivo. "
https://www.cell.com/cancer-cell/fulltext/S1535-6108(18)30573-7
Here is an easier - to -read article about the research:
"Scientists Successfully Turn Breast Cancer Cells Into Fat to Stop Them From Spreading"
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New Standard Likely for Some Metastatic HER2 Breast Cancer
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Study by Geisel group details process enzyme plays in cancer
Using cell models in the lab, the team found that LPL [Lipoprotein Lipase] docks on the surface of breast cancer cells, enabling them to absorb whole fat particles from the bloodstream...
Pinning down how cancer cells get the fat they need to replicate is important, Kolonin said, because patients need to know what effect their diet may have on their cancer risk or progression of their existing disease.
In an effort to reduce their consumption of carbohydrates and sugar — which cancer cells may use to make fat — some patients have turned to the high-fat, adequate-protein ketogenic diet, Kolonin said.
But if the Geisel researchers' findings are borne out in future studies, "reducing fatty acids in diet is something to consider," he said.
Then the question left for researchers is between carbohydrates and fat: "What's the worse of the two evils?" Kolonin said.
https://www.vnews.com/Dartmouth-researchers-find-breast-cancer-cells-gobble-up-dietary-fat-31464521
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CytoDyn Reports Early, But Strong Positive Clinical Responses for Two Patients, One in Metastatic Breast Cancer and One in Metastatic Triple-Negative Breast Cancer Trials
CytoDyn... a late-stage biotechnology company developing leronlimab (PRO 140), a CCR5 antagonist with the potential for multiple therapeutic indications, announced today continued promising clinical responses from its metastatic triple-negative breast (mTNBC) Phase1b/2 trial and its trial investigating leronlimab for the treatment of metastatic breast cancer (MBC).
"In the first patient, we're encouraged to see that after 11 weeks these additional data provide further preliminary evidence of efficacy, as demonstrated by sustained undetectable levels of CTCs and a reduction of cancer-associated macrophage like cells (CAMLs)," said Bruce Patterson, M.D., Chief Executive Officer of IncellDx...
CytoDyn's second patient enrolled is a stage 4 MBC patient. The metastasis progressed to the liver, lung and brain... This patient received her first injection of leronlimab on November 25, with one 700 mg dose each week... "The results from two subsequent scans of the metastatic lesions for this second patient demonstrated shrinkage of the tumors at both timepoints following the first leronlimab injection, reduction in brain edema, and remarkably, disappearance of several metastatic tumors."
The U.S. Food and Drug Administration (FDA) has granted a "Fast Track" designation to CytoDyn for two potential indications of leronlimab for deadly diseases. The first as a combination therapy with HAART for HIV-infected patients and the second is for metastatic triple-negative breast cancer (mTNBC). Leronlimab is an investigational humanized IgG4 mAb that blocks CCR5, a cellular receptor that is important in HIV infection, tumor metastases, and other diseases including NASH...
In the setting of cancer, research has shown that CCR5 plays an important role in tumor invasion and metastasis. Increased CCR5 expression is an indicator of disease status in several cancers. Published studies have shown that blocking CCR5 can reduce tumor metastases in laboratory and animal models of aggressive breast and prostate cancer. Leronlimab reduced human breast cancer metastasis by more than 98 percent in a murine xenograft model. CytoDyn is therefore conducting a Phase 2 human clinical trial in metastatic triple-negative breast cancer and was granted Fast Track designation in May 2019.
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Prescient Therapeutics (ASX:PTX) reports positive results in breast cancer drug trial
- Prescient Therapeutics (PTX) has reported a high response rate from its Phase 2a clinical trial for breast cancer
- All of the evaluable patients responded to the PTX-200 drug, with the disease completely eradicated in some patients
- All but one of these women are progression-free up to 40 months after treatment
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Olma, your easier to read link didn't work, but when I cut & pasted the words in your link to a search bar, I got the article.
Thanks!
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Taking certain vitamins during breast cancer chemo tied to recurrence, death
Use of dietary supplements that boost levels of antioxidants, iron, vitamin B12 and omega-3 fatty acids appeared to lower the effectiveness of chemotherapy, researchers report in the Journal of Clinical Oncology...
After accounting for other factors that might increase the risk of recurrence or death, they found patients who took any antioxidant at the outset and during chemotherapy - including carotenoids, Coenzyme Q10 and vitamins A, C, and E - were 41% more likely to have their breast cancer return and 40% more likely to die during follow-up compared to patients using no supplements...
Those taking B12 and iron supplements were at greater risk of recurrence and those results were statistically significant. Women taking B12 were 83% more likely to experience a recurrence and 22% more likely to die during follow-up compared to those who did not take those supplements. Women taking omega-3 supplements before and during chemo had a 67% higher likelihood of recurrence and those taking iron supplements were 79% more likely to experience a recurrence...
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Nanoparticle therapeutic restores tumor suppressor [p53], sensitizes cancer cells to treatment [research not on bc but bc is often p53-deficient]
Investigators have long sought a way to restore the activity of tumor suppressor genes such as p53. Most recently, attention has turned to an approach developed at Brigham and Women's Hospital that uses nanotechnology to deliver synthetic messenger RNA (mRNA). Leveraging advancements in nanotechnology, investigators from the Brigham have found that restoring p53 not only delays the growth of p53-deficient liver and lung cancer cells but may also make tumors more vulnerable to cancer drugs known as mTOR inhibitors. The team's findings are published in Science Translational Medicine...
Shi and colleagues, including co-corresponding authors Omid Farokhzad, MD, MBA, (director of Brigham's Center for Nanomedicine) and Wei Tao, Ph.D., (faculty in the Center), and first author Na Kong, MD, used a redox-responsive nanoparticle platform to deliver p53-encoding synthetic mRNA. The synthetic p53 caused cell cycle arrest, cell death and delayed the growth of liver cancer cells and lung cancer cells in which p53 had been depleted. In addition, synthetic p53 made the cells more sensitive to everolimus, a drug which is an mTOR inhibitor. The team reports successful results in multiple in vitro and in vivo models...
The authors note that further preclinical development and evaluation will be needed to explore that translational potential and scalability of the approach as well as its applicability to other p53 mutations and other cancers.
"We expect that this mRNA nanoparticle approach could be applied to many other tumor suppressors and rationally combined with other therapeutic modalities for effective combinatorial cancer treatment," the authors write.
https://medicalxpress.com/news/2019-12-nanoparticle-therapeutic-tumor-suppressor-sensitizes.html
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Adherence to Dietary Recommendations Among Long-Term Breast Cancer Survivors and Cancer Outcome Associations
Fei Wang, Hui Cai, Kai Gu, Liang Shi, Danxia Yu, Minlu Zhang, Wei Zheng, Ying Zheng, Ping-Ping Bao and Xiao-Ou Shu
Cancer Epidemiol Biomarkers Prev; Published OnlineFirst December 23, 2019; doi:10.1158/1055-9965.EPI-19-0872
http://cebp.aacrjournals.org/content/early/2019/12/21/1055-9965.EPI-19-0872.abstract
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Prevalence of Inherited Mutations in Breast Cancer Predisposition Genes among Uganda and Cameroon Women
Babatunde Adedokun, Yonglan Zheng, Paul Ndom, Antony Gakwaya, Timothy Makumbi, Alicia Y Zhou, Toshio F Yoshimatsu, Alex Rodriguez, Ravi K Madduri, Ian T Foster, Aminah Sallam, Olufunmilayo I Olopade and Dezheng Huo
Cancer Epidemiol Biomarkers Prev; Published OnlineFirst December 23, 2019; doi:10.1158/1055-9965.EPI-19-0506
http://cebp.aacrjournals.org/content/early/2019/12/21/1055-9965.EPI-19-0506.abstract
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re the antioxidants: not a double blind trial, a very small sample size, and the only supplements which had statistical significance in negative outcomes were B12, A, and iron.
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thanks for the comment Santa B. That article scares the crap out of me b/c I took a multivitamin - as per my MO during chemo. The percentages seem Bonkers!
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Obesity tied to higher breast cancer therapy-related cardiotoxicity risk
Obese individuals with stage I to III breast cancer who received anthracycline and/or trastuzumab had significantly higher odds of cardiotoxicity, compared with normal-weight patients, according to a French study in PLOS Medicine. Multivariable analysis also showed that obesity and trastuzumab treatment had an independent correlation with cardiotoxicity. Physician's Briefing/HealthDay News
https://journals.plos.org/plosmedicine/article?id=10.1371/journal.pmed.1002989
https://doi.org/10.1371/journal.pmed.1002989
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Some supplements during chemo may worsen breast cancer outcomes
Women with breast cancer who received any antioxidant supplement before and during chemotherapy had 41% and 40% increased odds of breast cancer recurrence and mortality at follow-up, compared with those without supplement use, researchers reported in the Journal of Clinical Oncology. The findings also showed 83% and 22% increased recurrence and death risk, respectively, among those who took vitamin B12 supplements, while those with omega-3 supplement intake before and during chemo and those who received iron supplements had a 67% and 79% higher likelihood of breast cancer recurrence, respectively.Reuters
https://ascopubs.org/doi/10.1200/JCO.19.01203
DOI: 10.1200/JCO.19.01203 Journal of Clinical Oncology
{This may be duplicative of info already posted but I wanted to be sure the DOI was available for future reference. I also want to point out the potentially obvious - that if supplements were taken to address deficiencies, such as anemia, were the supplements the problem or was the deficiency?}
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Lumpie I thought the same thing...
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It could also be that women who were using iron for anemia or B12 for neuropathy were more likely to have dose reductions or stop chemo early.
I was told to take B12 for neuropathy, along with B6 and biotin.
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I was given to understand that one or more B vitamins (6? 12?) were widely used in Europe (and perhaps in other countries) because they were believed to reduce symptoms of neuropathy. (I don't have a citation.)
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I was also told to take B-6 and B-12 to combat neuropathy. Sadly it didn't work as my feet are dead. On the other hand, I don't have any pain with my neuropathy, so who knows.
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In my country, we are told to run from B12 during treatment. Really, everybody in our support FB group knows to avoid it. Interestingly, I joined a German FB group (not my country, but I speak German) and people were recommending to take B12. That suprised me, as you can imagine.
I was thinking the same as some of you say above. Maybe the defficiency is the problem, B12 is often taken by vegans...
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I was told to take B6 - and that was the only B recommended to me by the Integrative Onc I saw. He did not suggest A or iron.
Here's another angle: I was told to take Omega 3 but ONLY from wild-caught Nordic fish (due to pollutants). I wonder if the 'cheap' brands of various vitamins may have less bioavailability or more pollutants in them....? When you pull up a given vitamin on Amazon there is often a huge range of prices and formulations to pick from... the study did nothing to differentiate those kinds of things.
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When I was first diagnosed, I found a study of men, lung cancer and B12 online . The men who had taken high doses of B12 daily before diagnosis had a higher incidence of lung cancer. That article alone convinced me avoid B12 supplements and I had been using B12 for years on and off because I tend to be anemic (congenitally low hemoglobin so iron supplementation does not help).
After chemo, I found a B complex in CVS that had no more than 100% of RDA of each vitamin. I took that for awhile but now have stopped.
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I buy my Omega 3 from the cancer center. My NP told me most fish oil supplements you get in the store are a waste of money. They use low grade fish and there is very little benefit in taking them.
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'Are you kidding me?': Check out the price tags on 'combination drugs'
"It's an abuse of the system," said one critic. The "business model ... involves gouging insurers and health plans, which ultimately costs consumers."
Read in NBC News: https://apple.news/AfVtvQkE-S6ilLEYIBkKJ-w
Shared from Apple News -
AI 'outperforms' doctors diagnosing breast cancer
An international team, including researchers from Google Health and Imperial College London, designed and trained a computer model on X-ray images from nearly 29,000 women.
The algorithm outperformed six radiologists in reading mammograms...
https://www.bbc.com/news/health-50857759
Original abstract in Nature...
International evaluation of an AI system for breast cancer screening
We show an absolute reduction of 5.7% and 1.2% (USA and UK) in false positives and 9.4% and 2.7% in false negatives. We provide evidence of the ability of the system to generalize from the UK to the USA. In an independent study of six radiologists, the AI system outperformed all of the human readers: the area under the receiver operating characteristic curve (AUC-ROC) for the AI system was greater than the AUC-ROC for the average radiologist by an absolute margin of 11.5%. We ran a simulation in which the AI system participated in the double-reading process that is used in the UK, and found that the AI system maintained non-inferior performance and reduced the workload of the second reader by 88%. This robust assessment of the AI system paves the way for clinical trials to improve the accuracy and efficiency of breast cancer screening.
https://www.nature.com/articles/s41586-019-1799-6
[Uses Google's Tensorflow machine learning platform, but they aren't releasing the code due to internal dependencies. This isn't the first AI system to help/improve mammogram reading. IBM has a Watson-based system and MIT posted code for their system on github (https://github.com/yala/OncoServe_public) and there are others, including commercially available software aids.]
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marijen, thanks for the link to the 'combination drugs' article. So frustrating.
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Antibiotics failed, then a Minnesota man turned to an old remedy that worked
Haverty, 62, of Brownsville, Minnesota, had 17 surgeries over a decade to rid his right leg of a stubborn infection that lingered after knee-implant surgery.
...his doctor at the Mayo Clinic leveled with him: Antibiotics were proving ineffective against the klebsiella pneumoniae bugs causing Haverty's infection, and he would probably grow so weary of surgeries that he would eventually opt to have the leg removed at the hip.
He had no way of knowing his eventual cure lay in a bacteria-killing virus known as a "phage,"...
The rising incidence of "superbugs," which have evolved to resistant human-made antibiotics, is driving renewed interest in phage therapy. Experimental efforts a century ago to harness phages for infections faded from mainstream science partly because antibiotic drugs worked so well and were relatively cheap. Modern phage researchers and entrepreneurs now have the tools to rapidly analyze the genomes of bacteria and phages, and machine-learning may aid in finding the perfect match.
Adapative Phage Therapeutics (APT) plans to recruit patients in up to four different clinical trials at 10 sites in 2020. The company has nearly 1,000 phages meticulously cataloged and stored and is targeting eight common types of bacterial infections.
{This article isn't cancer specific, but the treatment approach is so fascinating, I wanted to share.}
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Study Backs Breast Cancer Subtype That Had Been Questioned
Increased risk of fatal breast cancer versus ER-positive/PR-negative tumors
"The results support the existence of the ER-negative/PR-positive subtype and indicate that ER-positive/PR-negative and ER-negative/PR-positive tumors are distinct subtypes of breast cancer," the authors concluded. "The assessment of PR status provides valuable information for prognosis and for evaluating the benefit of endocrine therapy. Further studies and clinical trials are needed to optimize the treatment regimens for patients with single-hormone receptor-positive breast cancer."
Conclusions and Relevance In this cohort study, statistically significant distinctions between survival rates of patients with single hormone receptor–positive BC vs double hormone receptor–positive/double hormone receptor–negative BC were observed. Different strategies may be required for patients with single hormone receptor–positive tumors to ensure optimal treatment and maximum benefits from therapies.
https://jamanetwork.com/journals/jamanetworkopen/fullarticle/2758208
doi:10.1001/jamanetworkopen.2019.18160
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