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Thread: Blintunomomab

  1. #1
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    Blintunomomab

    Can anyone explain this to me? My brother tried blintunomomab and the first cycle worked and the second did not. We wanted to try a cd19 car t trial but they said the medicine removed all of the cd19 markers. I don't understand why he still has cancer if it took out all the markers. The car t trial was supposed to kill all the cd19 marked cells and that would remove all the cancer so why didn't the blintunomomab? So confusing.

  2. #2
    Super Moderator Top User po18guy's Avatar
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    Sorry to hear of this. It sounds like the Blinatumomab (Blincyto) caused the destruction of the malignant B-Cells which expressed CD19. However, the drug has apparently eliminated a high percentage of the healthy B-Cells (which normally express CD19). It appears to be somewhat non-selective, possibly killing both good and bad B lymphocytes. And, there is the potential problem. As to it no longer working after a single infusion, that is curious. Many acute cancers will find a way around the drugs used against them - but then there would be cells which express CD19. So, it seems that only the hematologist can answer this one.
    05/08-07/08 Tumor appears behind left ear. Followed by serial medical incompetence on the parts of PCP, veteran oncologist and pathologist (misdiagnosis via non-diagnosis). Providential guidance to proper care at an NCI designated comprehensive cancer center.
    07/08 Age 56 DX 1) Peripheral T-Cell Lymphoma-Not Otherwise Specified. Stage IV-B, >50 ("innumerable") tumors, bone marrow involvement.
    08/08-12/08 Four cycles CHOEP14 + four cycles GND (Cyclofosfamide, Doxorubicin, Vincristine, Etoposide, Prednisone & Gemcitabine, Navelbine, Doxil)
    02/09 2) Relapse.
    03/09-06/13 Clinical trial of Romidepsin > long-term study. NED for 64 twenty-eight day cycles, dose tapered.
    07/13 3) Relapse, 4) Suspected Mutation.
    08/13-02/14 Romidepsin increased, stopped for lack of response. Watch & Wait.
    09/14 Relapse/Progression. Visible cervical nodes appear within 4 days of being checked clear.
    10/06/14 One cycle Belinostat. Discontinued to enter second clinical trial.
    10/25/14 Clinical trial of Alisertib/Failed - Progression.
    01/12/15 Belinostat resumed/Failed - Progression. 02/23/15
    02/24/15 Pralatrexate/Failed - Progression. 04/17/15
    04/15 Genomic profiling reveals mutation into PTCL-NOS + AngioImmunoblastic T-Cell Lymphoma. Stage IV-B a second time. Two dozen tumors + small intestine (Ileum) involvement.
    04/22/15 TEC (Bendamustine, Etoposide, Carboplatin). Full response in two cycles. PET/CT both clear. Third cycle followed.
    06/15-07/15 Transplant preparation (X-rays, spinal taps, BMB, blood test, MUGA scan, lung function, CMV screening, C-Diff testing etc. etc. etc.) Intrathecal Methotrexate during spinal tap.
    BMB reveals 5) 26% blast cells of 20q Deletion Myelodysplastic Syndrome MDS), a bone marrow cancer and precursor to Acute Myeloid Leukemia.
    07/11-12/15 Cyclofosfamide + Fludarabine conditioning regimen.
    07/16/15 Total Body Irradiation.
    07/17/15 Moderate intensity Haploidentical Allogeneic Stem Cell Transplant receiving my son's peripheral blood stem cells.
    07/21-22/15 Triple dose Cyclofosfamide + Mesna, followed by immunosuppressants Tacrolimus and Mycophenolate Mofetil.
    07/23-08/03/15 Marrow producing zero blood cells. Fever. Hospitalized two weeks.
    08/04/15 Engraftment occurs, and blood cells are measurable - released from hospital.
    08/13/15 Day 26 - Marrow is 100% donor cells. Platelets climbing steadily, red cells follow.
    09/21/15 Acute skin Graft versus Host Disease arrives.
    DEXA scan reveals Osteoporosis.
    09/26/-11/03/15 Prednisone to control skin GvHD.
    11/2015 Acute GvHD re-classified to Chronic Graft versus Host Disease.
    05/2016 Tacrolimus stopped. Prednisone from 30-90mg daily tried. Sirolimus begun. Narrow-band UV-B therapy started, but discontinued for lack of response. One treatment of P-UVAreceived, but halted due to medication reaction.
    09/16/16 Three skin punch biopsies.
    11/04/16 GvHD clinical trial of Ofatumumab (Arzerra) + Prednisone + Methylprednisolone begun.
    12/16 Type II Diabetes, Hypertension - both treatment-related.
    05/17 Extracorporeal Photopheresis (ECP) begun in attempt to control chronic Graft-versus-Host-Disease (cGvHD. 8 year old Power Port removed and replaced with Vortex (Smart) Port for ECP.
    05/2017 Chronic anemia (low hematocrit). Chronic kidney disease. Cataracts from radiation and steroids.
    06/17 Trying various antibiotics in a search for tolerable prophylaxis.
    08/17 Bone marrow biopsy reveals the presence of 2% cells with 20q Deletion Myelodysplastic Syndrome, considered to be Minimum Residual Disease.
    12/17 Bone marrow biopsy reveals no abnormalities in the marrow - MDS eradicated. The steroid taper continues.
    01/18 Consented for Kadmon clinical trial.
    03/18 Began 400mg daily of KD025, a rho-Associated Coiled-coil Kinase 2 Inhibitor (ROCK2).
    09/18 Due to refractory GvHD, Extracorporeal Photopheresis halted after 15 months ue to lack of additional benefit.
    10/18 I was withdrawn from the Kadmon KD025 clinical trial due to increasing fatigue/lack of benefit.
    11/18 Began therapy with Ruxolitinib (Jakafi), a JAK 1&2 inhibitor class drug. Started at half-dose due to concerns with drug interactions.

    To date: 1 cancer, relapse, second relapse/mutation into 2 cancers, then 3 cancers simultaneously, 20 chemotherapy/GVHD drugs in 11 regimens (4 of them at least twice), 5 salvage regimens, 4 clinical trials, 5 post-transplant immuno-suppressant/modulatory drugs, the equivalent of 1,000 years of background radiation from 40+ CT series scans and about 24 PET scans.
    Both lymphoid and myeloid malignancies lend a certain symmetry to the hematological journey.

    Believing in the redemptive value of suffering makes all the difference.

 

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