Trial reportBlood cancer journal2015
A phase 2 randomized dose-ranging study of the JAK2-selective inhibitor fedratinib (SAR302503) in patients with myelofibrosis.
Trial report in Blood cancer journal, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 56 papers, 1 of them a synthesis 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
56 citing papers in PubMed, 1 synthesis or guideline pooled it, 96 citations in OpenAlex.
- Comparative efficacy and hematologic safety of different dosages of JAK inhibitors in the treatment of myelofibrosis: a network meta-analysis.Frontiers in oncology · 2024Pooled it
- Safety and efficacy of fedratinib, a selective oral inhibitor of Janus kinase-2 (JAK2), in patients with myelofibrosis and low pretreatment platelet counts.British journal of haematology · 2022Trial
- Addition of Navitoclax to Ongoing Ruxolitinib Therapy for Patients With Myelofibrosis With Progression or Suboptimal Response: Phase II Safety and Efficacy.Journal of clinical oncology : official journal of the American Society of Clinical Oncology · 2022Trial
- Population pharmacokinetics of fedratinib in patients with myelofibrosis, polycythemia vera, and essential thrombocythemia.Cancer chemotherapy and pharmacology · 2019Trial
- Janus kinase-2 inhibitor fedratinib in patients with myelofibrosis previously treated with ruxolitinib (JAKARTA-2): a single-arm, open-label, non-randomised, phase 2, multicentre study.The Lancet. Haematology · 2017Trial
- A phase I, open-label, dose-escalation, multicenter study of the JAK2 inhibitor NS-018 in patients with myelofibrosis.Leukemia · 2017Trial
- Pharmacokinetics, safety, and tolerability of fedratinib in adults with moderate and severe hepatic impairment: results from the phase 1 FEDR-CP-001 trial.Cancer chemotherapy and pharmacology · 2025Article
- Malignant JAK-signaling: at the interface of inflammation and malignant transformation.Leukemia · 2025Review
- Fedratinib in 2025 and beyond: indications and future applications.Blood advances · 2025Review
- DNA Methylation in Ph-Negative Myeloproliferative Neoplasms: Prognostic Role and Therapeutic Implications.Current issues in molecular biology · 2025Review
- Fedratinib for the treatment of myelofibrosis: a critical appraisal of clinical trial and "real-world" data.Blood cancer journal · 2025Review
- Advancements in physiologically based pharmacokinetic modeling for fedratinib: updating dose guidance in the presence of a dual inhibitor of CYP3A4 and CYP2C19.Cancer chemotherapy and pharmacology · 2024Article
- Type II mode of JAK2 inhibition and destabilization are potential therapeutic approaches against the ruxolitinib resistance driven myeloproliferative neoplasms.Frontiers in oncology · 2024Article
- Molecular biomarkers of leukemia: convergence-based drug resistance mechanisms in chronic myeloid leukemia and myeloproliferative neoplasms.Frontiers in pharmacology · 2024Review
- Micheliolide exerts effects in myeloproliferative neoplasms through inhibiting STAT3/5 phosphorylation via covalent binding to STAT3/5 proteins.Blood science (Baltimore, Md.) · 2023Article
- MAPK-negative feedback regulation confers dependence to JAK2Leukemia · 2023Article
- Evolving cognition of the JAK-STAT signaling pathway: autoimmune disorders and cancer.Signal transduction and targeted therapy · 2023Review
- Role of JAK inhibitors in myeloproliferative neoplasms: current point of view and perspectives.International journal of hematology · 2022Review
- Disease Modification in Myelofibrosis: An Elusive Goal?Journal of clinical oncology : official journal of the American Society of Clinical Oncology · 2022Article
- JAK2 inhibitor persistence in MPN: uncovering a central role of ERK activation.Blood cancer journal · 2022Review
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 5 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
In this phase 2 open-label randomized study, 31 patients with intermediate-2 or high-risk myelofibrosis received fedratinib 300, 400 or 500 mg once daily in consecutive 4-week cycles. Mean spleen volume reductions at 12 weeks (primary end point) were 30.3% (300 mg), 33.1% (400 mg) and 43.3% (500 mg). Spleen response rates (patients achieving ⩾35% spleen reduction) at 12/24 weeks were 30%/30% (300 mg), 50%/60% (400 mg) and 64%/55% (500 mg), respectively. By 4 weeks, improvements in myelofibrosis (MF)-associated symptoms were observed. At 48 weeks, 68% of patients remained on fedratinib and 16% had discontinued because of adverse events (AEs). Common grade 3/4 AEs were anemia (58%), fatigue (13%), diarrhea (13%), vomiting (10%) and nausea (6%). Serious AEs included one case of reversible hepatic failure and one case of Wernicke's encephalopathy (after analysis cutoff). Fedratinib treatment led to reduced STAT3 phosphorylation but no meaningful change in JAK2V617F allele burden. Significant modulation (P<0.05, adjusted for multiple comparisons) of 28 cytokines was observed, many of which correlated with spleen reduction. These data confirm the clinical activity of fedratinib in MF. After the analysis cutoff date, additional reports of Wernicke's encephalopathy in other fedratinib trials led to discontinuation of the sponsored clinical development program.
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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.