ArticleLeukemia research2021
Phase 1 study of the histone deacetylase inhibitor entinostat plus clofarabine for poor-risk Philadelphia chromosome-negative (newly diagnosed older adults or adults with relapsed refractory disease) acute lymphoblastic leukemia or biphenotypic leukemia.
Article in Leukemia research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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
8 citing papers in PubMed, 11 citations in OpenAlex.
- Role of histone deacetylases in blood cancer: Exploring peptide‑based inhibitors as therapeutic strategies for leukemia treatment (Review).Oncology reports · 2026Review
- Review
- Mechanisms of HDACs in cancer development.Frontiers in immunology · 2025Review
- Epigenetics-targeted drugs: current paradigms and future challenges.Signal transduction and targeted therapy · 2024Review
- Histone deacetylase inhibitors for leukemia treatment: current status and future directions.European journal of medical research · 2024Review
- Mechanisms of resistance to histone deacetylase inhibitors in acute leukemia.Therapeutic advances in hematology · 2024Article
- Developing Targeted Therapies for T Cell Acute Lymphoblastic Leukemia/Lymphoma.Current hematologic malignancy reports · 2023Review
- Myeloid-derived suppressor cells: key immunosuppressive regulators and therapeutic targets in hematological malignancies.Biomarker research · 2023Review
Corrections and comments
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Authors and funding
20 authors at 8 institutions in 1 country.
Funding
Abstract
purposeDespite advances in immunotherapies, the prognosis for adults with Philadelphia chromosome-negative, newly diagnosed (ND) or relapsed/refractory (R/R) acute lymphoblastic leukemia/acute biphenotypic leukemia (ALL/ABL) remains poor. The benzamide derivative entinostat inhibits histone deacetylase and induces histone hyperacetylation. The purine nucleoside analogue clofarabine is FDA-approved for R/R ALL in children 1-21 years of age. Low doses of clofarabine have been reported to induce DNA hypomethylation. We conducted a phase 1 study of low dose clofarabine with escalating doses of entinostat in adults with ND or R/R ALL/ABL. EXPERIMENTAL
designAdults ≥60 years with ND ALL/ABL or ≥21 years with R/R ALL/ABL received repeated cycles every 3 weeks of entinostat (4 mg, 6 mg or 8 mg orally days 1 and 8) and clofarabine (10 mg/m
resultsTwenty-eight patients were treated at three entinostat dose levels with the maximum administered dose being entinostat 8 mg. The regimen was well tolerated with infectious and metabolic derangements more common in the older population versus the younger cohort. There was no severe hyperglycemia and no peripheral neuropathy in this small study. There were 2 deaths (1 sepsis, 1 intracranial bleed). Overall response rate was 32 %; it was 50 % for ND ALL/ABL. Entinostat increased global protein acetylation and inhibited immunosuppressive monocyte subpopulations, while clofarabine induced DNA damage in all cell subsets examined.
conclusionEntinostat plus clofarabine appears to be tolerable and active in older adults with ND ALL/ABL, but less active in R/R patients. Further evaluation of this regimen in ND ALL/ABL appears warranted.
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