Trial reportCytotherapy2020
Fc-engineered anti-CD33 monoclonal antibody potentiates cytotoxicity of membrane-bound interleukin-21 expanded natural killer cells in acute myeloid leukemia.
Trial report in Cytotherapy, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 2 of them syntheses that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
13 citing papers in PubMed, 2 syntheses or guidelines pooled it, 18 citations in OpenAlex.
- A systematic review of the last two decades of NK cell-based clinical trials: state of the art of AML therapy.BMC cancer · 2025Pooled it
- Ex vivo expansion of natural killer cells for hematological cancer immunotherapy: a systematic review and meta-analysis.Clinical and experimental medicine · 2023Pooled it
- Immunotherapy in acute myeloid leukemia: The antibodies, TriKEs, and CARs on the arduous road to cure.Blood reviews · 2026Review
- Advances in the application of patient-derived xenograft models in acute leukemia resistance.Cancer drug resistance (Alhambra, Calif.) · 2025Review
- Evolution of natural killer cell-targeted therapy for acute myeloid leukemia.International journal of hematology · 2024Review
- Clinical Applications of Combined Immunotherapy Approaches in Gastrointestinal Cancer: A Case-Based Review.Vaccines · 2023Review
- Expanded NK cells used for adoptive cell therapy maintain diverse clonality and contain long-lived memory-like NK cell populations.Molecular therapy oncolytics · 2023Article
- Natural killer cells and acute myeloid leukemia: promises and challenges.Cancer immunology, immunotherapy : CII · 2022Review
- Optimization and validation of CAR transduction into human primary NK cells using CRISPR and AAV.Cell reports methods · 2022Article
- Advances in NK cell production.Cellular & molecular immunology · 2022Review
- Leveraging NKG2D Ligands in Immuno-Oncology.Frontiers in immunology · 2021Review
- Hypomethylating Agents and Immunotherapy: Therapeutic Synergism in Acute Myeloid Leukemia and Myelodysplastic Syndromes.Frontiers in oncology · 2021Review
- Natural killer cell-based immunotherapy for acute myeloid leukemia.Journal of hematology & oncology · 2020Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
10 authors at 2 institutions in 1 country.
Funding
Abstract
backgroundQualitative and quantitative defects in natural killer (NK) cells have been noted in patients with acute myeloid leukemia (AML), providing rationale for infusion of donor-derived NK cells. We previously showed that decitabine enhances expression of NKG2D ligands in AML with additive cytotoxicity when NK cells and Fc (fragment crystallizable region)-engineered CD33 monoclonal antibody (CD33mAb) was used. We conducted a phase 1 study evaluating decitabine and haploidentical NK cells in relapsed AML. Using patient samples from this study, we evaluated whether ex vivo donor-derived expanded NK cells with or without CD33mAb was effective in decitabine-treated AML.
methodsBone marrow aspirates were collected from patients at pre- and post-NK cell infusion. NK cells from healthy donors were expanded for 14 days using irradiated K562 feeder cells displaying membrane-bound IL-21 (mbIL-21). Patient samples were used to test in vitro activity of mbIL-21 NK cells ± CD33m Ab-dependent cellular cytotoxicity (ADCC) and AML patient derived xenograft (PDX) mice were developed to test in vivo activity.
resultsUpon incubation with primary AML blasts, mbIL-21 NK cells showed variable donor-dependent intra-cellular interferon-γ production, which increased with CD33mAb-coated AML. ADCC assays revealed mbIL-21 NK cells effectively lysed primary AML blasts with higher activity on CD33mAb-coated AML. Importantly, CD33mAb-dependent enhanced cytotoxicity by mbIL-21 NK cells was maintained in AML cells from patients even 24 days post-decitabine treatment. In vivo infusion of mbIL-21 NK cells in AML PDX mice, treated with CD33mAb, reduced the tumor burden. DISCUSSION: These data show the therapeutic utility of mbIL-21 NK cells that can be further potentiated by addition of CD33mAb in AML.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.