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Adequate: 10 or more non-sclerotic\u002Fevaluable glomeruli and two muscular arteries\n  2. Minimally Adequate: at least 7 non-sclerotic\u002Fevaluable glomeruli and one muscular artery\n* For participants who received any prior treatment for antibody-mediated rejection (AMR), MVI, or TCMR as outlined in Exclusion Criterion 5, the biopsy must be performed at least 6 weeks after completing (or stopping) prior treatment.\n* Kidney transplant at least 6 months prior to Screening visit (recipients of either living or deceased donors).\n* DSA: Human leukocyte antigen (HLA) Class I and II antigen-specific DSA-negative (preformed and de novo DSA) as determined by the local laboratory's definition of positivity using single-antigen bead-based assays within 3 months prior to randomization.\n\nKey Exclusion Criteria:\n\n* Transplant: Blood type (ABO)-incompatible transplant.\n* History of multiple organ transplants including en bloc and dual kidney transplants.\n* Presence of HLA donor-specific antibodies.\n* Acute, rapid decline in renal function, defined as a participant likely to require renal replacement therapy within the next 30 days as determined by the Investigator.\n* Prior AMR or TCMR treatment (with the exception of corticosteroids) within 3 months prior to randomization is excluded as listed below. Participants who received any of these treatments between 3 and 6 months prior to randomization must have both a renal biopsy (IC3) and DSA testing at least 6 weeks after completing (or stopping) treatment in order to confirm continuing MVI≥2 and DSA negative status and to determine eligibility:\n\n  1. Intravenous or subcutaneous immunoglobulin (IVIg or subcutaneous immunoglobulin \\[SCIg\\]) or plasma exchange (PLEX).\n  2. Complement system inhibitors (e.g., eculizumab).\n  3. Proteasome inhibitors (e.g., bortezomib).\n  4. The anti-interleukin-6 receptor (anti-IL-6R) tocilizumab.\n  5. Any B cell-depleting therapy (including anti-CD20 agents \\[e.g., rituximab\\]) within 3 months prior to randomization.\n  6. Any other investigational agent within 3 months or 5 half-lives (whichever is longer) of randomization.\n\nNote: Other protocol-defined Inclusion\u002FExclusion criteria may apply.","ALL","18 Years","74 Years",{"count":612,"type":613},81,"ESTIMATED","INTERVENTIONAL",[616],"PHASE2","In this study, researchers will learn more about a drug called felzartamab in people who have received a kidney transplant and later developed a condition called microvascular inflammation (MVI). MVI is a type of injury to small blood vessels in the transplanted kidney and may be a sign of rejection by the body. It can lead to serious kidney problems over time.\n\nIn many cases, MVI is caused by antibodies that attack the transplanted kidney. But in some people, MVI happens without these antibodies. This type of MVI is called isolated MVI. There are currently no approved treatments for isolated MVI.\n\nThe main goal of the study is to learn about the effect felzartamab has on inflammation in the transplanted kidney. The main question researchers want to answer is:\n\n• How many participants have no signs of active inflammation in the transplanted kidney after 24 weeks of treatment with felzartamab?\n\nResearchers will also study how felzartamab affects kidney function, immune activity, and overall health. They will monitor safety through kidney biopsies, lab tests, and by recording adverse events throughout the study.\n\nAdverse events are health problems that may or may not be caused by the study drug.\n\nThe study will be done in 2 parts as follows:\n\n* Participants will be randomly assigned to receive either felzartamab or a placebo. A placebo looks like the study drug but contains no real medicine.\n* In Part A, participants will receive their assigned drug for 24 weeks. Neither the researchers nor the participants will know who is receiving felzartamab or placebo.\n* Part B will last another 28 weeks. All participants will receive felzartamab and both participants and researchers will know this.\n* All treatments will be given by intravenous (IV) infusion at the study site.\n* Participants will have kidney biopsies at the start of the study, at Week 24, and at Week 52 to help measure changes in inflammation.\n* Participants will stay in the study for about 1 year.",[619],"Microvascular Inflammation",[621,622],"Kidney Transplant","Kidney Transplant Rejection","2026-06-29",{"date":625,"type":626},"2026-06-30","ACTUAL",{"date":628,"type":626},"2026-01-05",{"date":630,"type":613},"2028-02-10",{"name":5,"class":6},38]