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Genmab — Marts 2018

Planlagt Fastgjort Låst Flyttet Genmab
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  • E Offline
    E Offline
    E_L
    wrote on sidst redigeret af
    #145

    that is immediately what i thought about Bulder. How long ago did we ask Jan about home administration? I think you have your first question for Q&A Q1 😉

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    • BulderB Offline
      BulderB Offline
      Bulder
      wrote on sidst redigeret af
      #146

      E L: Tried to read your link after one cup of coffee. Not enough. Then I added one Heineken. Didn't help. Then another Heineken. Nope. Then I gave up. What about you?

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      • E Offline
        E Offline
        E_L
        wrote on sidst redigeret af
        #147

        I started with the Heineken. Didn't help. Then another Heineken. Nope. So then I tried the coffee. No luck. Now just waiting for Sukkeralf to explain it to us 😉

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        • P Offline
          P Offline
          Parasitism
          wrote on sidst redigeret af
          #148

          Jeg gider ikke engang prøve, når I to ikke kan udlede noget af det 😉

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          • BulderB Offline
            BulderB Offline
            Bulder
            wrote on sidst redigeret af
            #149

            Jeg prøver alligevel: Er det noget med at man kan bruge NK-celler fra raske donorer til at modvirke at mikromiljøet omkring tumorerne hæmmer patientens egne NK-cellers aktivitet? Dara udvirker ADCC via NK-cellerne, men disse hæmmes af visse faktorer i mikromiljøet. Tilførsel af fremmede NK-celler kan således forstærke effekten af dara. ??

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            • D Offline
              D Offline
              Doc4
              wrote on sidst redigeret af
              #150

              ...hvis nogen ønsker den fulde artikel...kræver STOR indsigt og viden om den meget specifikke terminology...https://sci-hub.hk/https://doi.org/10.1007/s00262-018-2140-1

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              • BulderB Offline
                BulderB Offline
                Bulder
                wrote on sidst redigeret af
                #151

                er jeg helt på vildspor, Doc4?

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                • D Offline
                  D Offline
                  Doc4
                  wrote on sidst redigeret af
                  #152

                  ...og her er en ny oversigtsartikel...'CD38-targeting antibodies in multiple myeloma:
                  mechanisms of action and clinical experience'....fuld artikel...https://sci-hub.hk/10.1080/1744666X.2018.1443809

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                  • D Offline
                    D Offline
                    Doc4
                    wrote on sidst redigeret af
                    #153

                    @Bulder..Min umiddelbare mening...tjae, nok noget;), men det er en særdeles vanskellig artikel og jeg har pt desværre ikke tid til nærlæsning:(. Dara, fx, i sig selv hæmmer/mindsker CD-38 receptorerne efter første infusion med 90%.

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                    • G Offline
                      G Offline
                      gentogen
                      wrote on sidst redigeret af
                      #154

                      Jeg læser det som dig Bulder, men pointen er vist på sin vis lidt den omvendte, at NK-terapi kan understøttes af forskellige ADCC 'triggering antibodies', hvor Dara er et eksempel

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                      • BulderB Offline
                        BulderB Offline
                        Bulder
                        wrote on sidst redigeret af
                        #155

                        Jo, men problemet er at CD38 også udtrykkes på NK-cellerne, hvorved dara selv er med til at mindske effekten af ADCC, fordi dara slår nogle af NK-cellerne ihjel. Derfor tilførsel af donor-NK-celler som kan igen forstærke ADCC-processen.

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                        • BulderB Offline
                          BulderB Offline
                          Bulder
                          wrote on sidst redigeret af
                          #156

                          Fra Doc4's link: In summary, we showed in this study that the combination
                          of an ADCC triggering antibody and selection of KIRligand
                          mismatched donors is a potent and realistic platform
                          to potentiate the NK cell antitumor response in the TME.

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                          • Legolas23L Offline
                            Legolas23L Offline
                            Legolas23
                            wrote on sidst redigeret af
                            #157

                            Altså effekt i solide - i teorien ?

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                            • BulderB Offline
                              BulderB Offline
                              Bulder
                              wrote on sidst redigeret af
                              #158

                              Mere af samme skuffe: The antitumor potential of
                              NK cells can be applied by donor NK-cell infusion as well
                              as by haploidentical stem-cell transplantation.

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                              • BulderB Offline
                                BulderB Offline
                                Bulder
                                wrote on sidst redigeret af
                                #159

                                Der er altså - som jeg forstår det - en indbygget svaghed i dara, ved at dara selv slår (nogle af) de NK-celler ihjel, som den lige har trigget til at forårsage ADCC.

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                                • BulderB Offline
                                  BulderB Offline
                                  Bulder
                                  wrote on sidst redigeret af
                                  #160

                                  Og til sidst: Therefore, we
                                  envision that the combination of ADCC triggering antibodies
                                  and KIR-ligand mismatching is a favorable combination
                                  to be tested in future clinical studies, both in the context of
                                  HaploSCT, potentially in combination with NK cell infusions,
                                  as well as single donor NK-cell infusion. - Haplo... er transplantation.

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                                  • BulderB Offline
                                    BulderB Offline
                                    Bulder
                                    wrote on sidst redigeret af
                                    #161

                                    Og jeg antager - på linje med Lego - at dette har betydning ud over MM også i andre tumorer, hvor ADCC spiller en rolle.

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                                    • Legolas23L Offline
                                      Legolas23L Offline
                                      Legolas23
                                      wrote on sidst redigeret af
                                      #162

                                      https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5728278/

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                                      • BulderB Offline
                                        BulderB Offline
                                        Bulder
                                        wrote on sidst redigeret af
                                        #163

                                        Tak Lego. In conclusion, our findings demonstrate that NK cells, which express high levels of CD38, are reduced by daratumumab treatment in a rapid, reversible, dose- and concentration-dependent manner. This reduction in NK-cell counts was not associated with response to daratumumab or PFS. In addition, reduction of NK cells was not associated with an increase in safety concerns or AEs, including infections.

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                                        • BulderB Offline
                                          BulderB Offline
                                          Bulder
                                          wrote on sidst redigeret af
                                          #164

                                          Så der er ikke den store negative effekt af dara's reduktion af NK-celler. Men det andet studie, som E L linkede til mener til gengæld at tilførsel af donor-NK-celler kan forstærke effekten.

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