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Medicine Government United States

FDA Approves First Cell-Based Therapy For Cancer (npr.org) 63

An anonymous reader quotes a report from NPR: The Food and Drug Administration on Wednesday announced what the agency calls a "historic action" -- the first approval of a cell-based gene therapy in the United States. The FDA approved Kymriah, which scientists refer to as a "living drug" because it involves using genetically modified immune cells from patients to attack their cancer. The drug was approved to treat children and young adults suffering from acute lymphoblastic leukemia, a cancer of blood and bone marrow that is the most common childhood cancer in the United States. About 3,100 patients who are 20 and younger are diagnosed with ALL each year. The treatment involves removing immune system cells known as T cells from each patient and genetically modifying the cells in the laboratory to attack and kill leukemia cells. The genetically modified cells are then infused back into patients. It's also known as CAR-T cell therapy.

The treatment, which is also called CTL109, produced remission within three months in 83 percent of 63 pediatric and young adult patients. The patients had failed to respond to standard treatments or had suffered relapses. Based on those results, an FDA advisory panel recommended the approval in July. The treatment does carry risks, however, including a dangerous overreaction by the immune system known as cytokine-release syndrome. As a result, the FDA is requiring strong warnings.

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FDA Approves First Cell-Based Therapy For Cancer

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  • by dgatwood ( 11270 ) on Wednesday August 30, 2017 @09:08PM (#55114203) Homepage Journal

    Let's put this in perspective. ALL already had treatments that put 98% of affected children into remission within a couple of months, with 8% of those eventually relapsing. So 90% are completely cured with existing therapies. There are other cancers where the numbers are an order of magnitude worse. I'm puzzled why the focus seems to be on diseases that medical science has already very nearly cured, rather than the ones that kill most of the people who get them.

    Also, is this actually measurably better than existing treatments? If existing treatments fail to produce remission in 2% and allow a relapse in another 8%, you'd expect only about 20% of the patients to be in that 2% group that weren't helped by chemo. So a remission rate of only 83% is probably not statistically significantly different from what they would have gotten if they had used the current generation of chemo, and doesn't necessarily indicate any benefit for people who did not respond to chemo. So this could very well be a no-op, all at a tremendous cost that insurance won't cover (because it is experimental).

    I'm not saying that the research isn't valuable, because it is, but in the zero-sum game of medical research, seeing the first approved cell-based cancer treatment be for a disease that is already all but cured just seems bafflingly backwards. I would have expected the first treatments to be for things like pancreatic cancer or mesothelioma or, if you want a childhood cancer with a high case fatality rate, perhaps neuroblastoma. Brain cancers kill significantly more kids than leukemia, despite being much less common.

    • by arth1 ( 260657 )

      Let's put this in perspective. ALL already had treatments that put 98% of affected children into remission within a couple of months, with 8% of those eventually relapsing. So 90% are completely cured with existing therapies. There are other cancers where the numbers are an order of magnitude worse. I'm puzzled why the focus seems to be on diseases that medical science has already very nearly cured, rather than the ones that kill most of the people who get them.

      Money. This is a $400,000+ treatment. People are willing to bankrupt themselves for their kids, even if they aren't for themselves.

      • Money. This is a $400,000+ treatment. People are willing to bankrupt themselves for their kids, even if they aren't for themselves.

        What? Of course people are willing to bankrupt themselves for medical treatment, whether it's for their children or for themselves. Medical bills are the #1 cause of bankruptcy in the US, 62% of ALL bankruptcies are for medical bills (and 78% of those people had some form of health insurance). We are literally killing people and ruining survivor's lives just so the medical insurance company owners can make more profits. Profit is sacrosanct in the US -- single payer will never happen because Congress is

      • by dciman ( 106457 )

        From the perspective of a PhD trained cancer researcher, working on drug discovery/development in academia:

        The cost might seem high. Some people think the cost is really going to make these types of cellular based therapy difficult to push into wide spread use. I'm more hopeful that new technology will drive down the cost in coming years. The techniques used to make these cells are years old at this point. That's just how long it takes to get things approved and trials conducted.

        But remember the following:

        1

    • by dcollins117 ( 1267462 ) on Wednesday August 30, 2017 @10:16PM (#55114387)

      First off, medical research is in no way a "zero-sum game". Finding an effective treatment for one form of cancer is a good thing. It's a net plus. It in no way detracts from the knowledge we have about other diseases. The progress we have made in this area could very well lead to treatments for all kinds of different illnesses.

      There is a lot of medical research being done. Some of it pans out and some of it doesn't. Using this good news as an opportunity to lament about all the diseases we do not currently have a good treatment for gives me great concern about your ability to reason.

      • by dgatwood ( 11270 ) on Thursday August 31, 2017 @12:47AM (#55114781) Homepage Journal

        First off, medical research is in no way a "zero-sum game". Finding an effective treatment for one form of cancer is a good thing. It's a net plus. It in no way detracts from the knowledge we have about other diseases. The progress we have made in this area could very well lead to treatments for all kinds of different illnesses.

        At this point, it is largely a zero-sum game. Every dollar spent on research in one area is a dollar that can't be spent in another area. One disease's gains represent another disease's losses. The exceptions are the additional knowledge of general techniques for doing gene splicing and other similar areas, but that sort of research is sufficiently independent of what disease you're trying to cure that I doubt it is even typically done by the same organizations.

        The progress we have made in this area could very well lead to treatments for all kinds of different illnesses.

        In general, I would agree, but unfortunately, when you're talking about genetic modifications to human cells, as I understand it, the treatment tends to be highly specific to a single person, forget a single disease. So apart from the basic gene splicing techniques themselves (which are, I think, fairly well understood at this point), these studies basically just teach us whether you can cure a specific strain of a specific cancer in a specific person. If you're going to do an experimental treatment, if you're going to gain roughly the same knowledge either way, it seems like it would make more sense to try it on a strain of cancer that has a 90% chance of killing the person in the next year rather than a 2% chance. That's all I'm saying.

        • by AmiMoJo ( 196126 ) on Thursday August 31, 2017 @06:58AM (#55115599) Homepage Journal

          One disease's gains represent another disease's losses.

          Not at all. This technique for this cancer, now proven, will lead to it being adapted for other cancers. No point aiming for the hardest one first, start with an easy one to prove it works reliably and safely and then move on to the harder problems.

          as I understand it, the treatment tends to be highly specific to a single person

          Indeed, but the most important part of the technique is being able to quickly and relatively cheaply create such a treatment for any given individual.

        • -- At this point, it is largely a zero-sum game. Every dollar spent on research in one area is a dollar that can't be spent in another area. One disease's gains represent another disease's losses. The problem is that research isn't targeted like that - especially initial research. This isn't a case where you "put in X dollars" and pop out a result.
    • by Cyberax ( 705495 )
      Leukemia is one of the "easier" cancers, as it doesn't really form solid tumors and is susceptible to therapeutic agents. You can bet that they're now pursuing cures for more complicated cancers.
      • This. I heard that t-cell therapy currently only works on blood cancers. I guess because you can just inject it and it doesn't need targeting
    • by Anonymous Coward

      Kids are used by big pharma and the oncologists as guinea pigs. Even when treatments exist with good prognosis, they are pushed to enroll into experimental programs (including clinical trials), where their chances of survival are slimmer. And that, even in developed countries. There was a scandal in France about this a few years ago. Here is one link (in French) http://www.ametist.org/plancancer.php

    • It's not it's just the first of about 300 individual cancer treatments (All variants of this technique) to get passed the FDA that's all.
    • studied. You have to remember - just 50 years ago, ALL was pretty much a death sentence and it tends to hit kids more than adults. 2nd - this treatment is used AFTER patients had failed to respond or relapsed. So this treatment this roughly an 85% success rate takes it from 90% to what, an almost 98% success rate (overall)? But the real question (and I haven't seen it answered by anyone yet) is whether or not it'll be effective for Philadelphia chromosome (9/22) patients. (I haven't had a chance to res
    • by sharky611aol.com ( 682311 ) on Thursday August 31, 2017 @08:18AM (#55115899)
      IAAPHO (I am a pediatric hematologist/oncologist), so take my comments for what they're worth... TL;DR: This is a big freaking deal. To address your points, ALL was the first drug that CAR-T treatment was approved for for several reasons. 1) It's common, so easier to do the trials. 2) It has good data to support the use of immunotherapy (see blinatumumab, inotuzumab ozogamycin), and this therapy is really just the next step in a long line of improvements in immunotherapy. 3) It's got a good target. Almost all Pre-B ALLs express CD19 and downregulation (the main resistance mechanism for immunotherapy) seems rare (but has been documented in relapsed cases). 4) The cure rate is nowhere near as high as you cite for older children and young adults (currently less than 80% for anyone over 13 years.). THIS is actually where most of the use for CAR-T therapy will come from.

      The bigger news is that the TECHNOLOGY for this treatment has been FDA approved. Once you have perfected the cell harvesting/transfecting/culturing/infusing process, it's trivial to plug in a different antigen target into the cassette. And in fact, this is already happening on a large scale. Hop on over to clinicaltrials.gov and search for CAR... We've already got some results from GD2 targeting (neuroblastoma), HER2 targeting (breast cancer and osteosarcoma) and IL-13R2 (glioblastoma multiforme) with promising results. And remember, this is just the first generation of CAR-T therapy to make it to the market. As the technology matures the acceptable uses of it will broaden.

      Your zero-sum game argument has been sufficiently debunked below. But suffice to say, this is a true breakthrough technology which will have a huge impact on the field for years to come. But you've gotta start somewhere.

      (In bigger news, I think this is the first time in my 18+ years on /. that there's been a pediatric cancer article. That should tell you something...)

    • Well, I've done enough casual reading on CAR-T to know that it's being used in clinical trials on pretty much every type of cancer out there, child and adult including solid (and incurable) cancers like pancreatic cancer.

      One reason why they may have initially focussed on childhood leukemia is PR: saving children is good PR, and good PR results in more funding which results in more research which ultimately insures the broadest range of therapies released. Another is, it's possible (conjecture here) that
    • There are a few reasons; first, ALL in adults is significantly worse than it is in children, and the drug should (and does, in clinical trials so far) work well for them too. Second, relapsed ALL is pretty much impossible to get rid of except for this; it's not a huge population, but there's not much else you can do for them. The 83% response rate is definitely better than historical controls, in the relapsed patients. Lastly, it's an easier target. Solid tumor cancers seem to be harder to attack using CART
  • i'd flip that coin
    • by rtb61 ( 674572 )

      Sometimes retiring is the better option, rather than being a lab rat for some one else's greed. The way this stuff if being run by for profit corporations is pretty psychopathic. Lying on test results, with holding information, hiding poor results, lawyering up to keep bad treatments going profitably for as long as possible regardless of consequences. Not that this treatment is bad but they have done it to themselves, the typical US corporation is simply no longer to be trusted no matter what they claim to

  • Hypereosinophilic Syndrome, or HES as it's commonly referred to is a cancer that affects roughly 1 in 18 million people. A bone/blood cancer that causes the marrow to create too many eosinophils. These eosinophils are toxic to the body in that when they die, they go 1 of 3 possible ways, each way killing cells surrounding them. Having been diagnosed with HES almost 8 years ago, after over 4 years of feeling like I'd slept in a bed of poison-ivy while having chicken-pox and a 3rd degree sunburn. At the

  • by Junta ( 36770 ) on Thursday August 31, 2017 @07:27AM (#55115695)

    'FDA approves new treatment for ALL cancer'

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