Trial reportBlood2025
Marstacimab prophylaxis in hemophilia A/B without inhibitors: results from the phase 3 BASIS trial.
Trial report in Blood, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03938792 (An Open-Label Study in Adolescent and Adult Severe), which is not on this map. Cited by 18 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
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.
An Open-Label Study in Adolescent and Adult Severe (Coagulation Factor Activity <1%) Hemophilia A Participants With or Without Inhibitors or Moderately Severe to Severe Hemophilia B Participants (Coagulation Factor Activity ≤2%) With or Without Inhibitors Comparing Standard Treatment to PF-06741086 Prophylaxis
Who cites it
18 citing papers in PubMed.
- Denecimig (Mim8) prophylaxis over 52 weeks in adolescents and adults with hemophilia A: FRONTIER2 extension study.Research and practice in thrombosis and haemostasis · 2026Trial
- Prospective collection of bleeding rate and factor usage in participants with hemophilia A and B in a noninvestigational product study.Research and practice in thrombosis and haemostasis · 2026Trial
- Trial
- Article
- Clinical Pharmacokinetics and Pharmacodynamics of Marstacimab, an Anti-tissue Factor Pathway Inhibitor Monoclonal Antibody, in Adolescent and Adult Participants with Hemophilia.Clinical pharmacokinetics · 2026Article
- Personalized Treatment of Hemophilia: Matching Therapies to Patient Needs in a Rapidly Evolving Landscape.Drugs · 2026Review
- Current perspectives on non-factor therapies for hemophilia.International journal of hematology · 2026Review
- Laboratory Challenges in the Era of Novel Haemophilia Therapies.Transfusion medicine and hemotherapy : offizielles Organ der Deutschen Gesellschaft fur Transfusionsmedizin und Immunhamatologie · 2026Review
- Non-Factor Therapies in Haemophilia: The Era of Factor VIII Mimetics and Targeted Rebalancing Agents.Transfusion medicine and hemotherapy : offizielles Organ der Deutschen Gesellschaft fur Transfusionsmedizin und Immunhamatologie · 2026Review
- Hemophilia in Mexico: Updated Consensus Recommendations on Diagnosis, Treatment and Gene Therapy.Diseases (Basel, Switzerland) · 2026Review
- Non-factor Therapies in Hemophilia: Mechanisms, Clinical Evidence, Patient Management, and Future Perspectives.Advances in therapy · 2026Review
- A Component Analysis of Endotheliopathy of Trauma.Research square · 2026Article
- Mechanism and kinetics study of MG1113, an anti-tissue factor pathway inhibitor antibody promoting hemostasis in hemophilia.Research and practice in thrombosis and haemostasis · 2026Article
- Challenges in Balancing Hemostasis and Thrombosis in Therapy Tailoring for Hemophilia: A Narrative Review.International journal of molecular sciences · 2026Review
- FRONTIER1 multiple ascending dose extension: a safety, tolerability, pharmacokinetics, and pharmacodynamics study of Mim8 in people with hemophilia A.Research and practice in thrombosis and haemostasis · 2025Article
- Marstacimab, an antitissue factor pathway inhibitor, combined with bypassing agents: effects on thrombin generation and in hemostatically normal rats.Research and practice in thrombosis and haemostasis · 2025Article
- Transforming Hemophilia Treatment With Novel Rebalancing Agents: Clinical Studies and Practical Perspectives.Clinical and applied thrombosis/hemostasis : official journal of the International Academy of Clinical and Applied Thrombosis/HemostasisReview
- Pharmacokinetic Variability in Anti-TFPI Therapies: Why Absolute Metrics Matter for Plasma Monitoring.Haemophilia : the official journal of the World Federation of HemophiliaArticle
Corrections and comments
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Authors and funding
19 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
abstractMarstacimab targets the tissue factor pathway inhibitor to rebalance hemostasis. Previous phase 1 and 2 trials established marstacimab safety and efficacy in adults with severe hemophilia A (HA) or B (HB). BASIS is an open-label, marstacimab phase 3 trial in males aged 12 to 74 years with severe HA (factor VIII <1%) or moderately severe to severe HB (factor IX ≤2%). Participants without inhibitors received on-demand (OD) or routine prophylaxis (RP) therapy during a 6-month observational phase (OP) before receiving once-weekly subcutaneous 150 mg marstacimab during a 12-month active treatment phase (ATP). Primary end points were annualized bleeding rate (ABR) for treated bleeds vs previous OD or RP during the OP, and safety. Of 128 participants enrolled in the OP, 116 received marstacimab in the ATP. In the OD group (n = 33), mean ABR decreased from 39.86 (95% confidence interval [CI], 33.05-48.07) in the OP to 3.20 (95% CI, 2.10-4.88) in the ATP, demonstrating superiority of marstacimab (estimated ABR ratio, 0.080 [95% CI, 0.057-0.113]; P < .0001). In the RP group (n = 83), mean ABR decreased from 7.90 (95% CI, 5.14-10.66) in the OP to 5.09 (95% CI, 3.40-6.78) in the ATP, demonstrating noninferiority and superiority of marstacimab (estimated ABR difference, -2.81 [95% CI, -5.42 to -0.20]; P = .0349). There were no deaths or thromboembolic events. Weekly subcutaneous marstacimab reduced ABR vs OD or RP therapy in the OP in individuals with severe HA or moderately severe to severe HB without inhibitors. Marstacimab was safe and well tolerated with no unanticipated side effects. This trial was registered at www.clinicaltrials.gov as #NCT03938792.
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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.