Drugs / Marstacimab
last change Jun 2026 re-read 3 minutes ago

Marstacimab

also known as PF-06741086 · Hympavzi · Marstacimab-hncq

Monoclonal antibody targets TFPI via inhibition

Developed for
hemophilia · hemophilia A · hemophilia B · severe hemophilia A
Investigated by
Pfizer

Regulatory milestones approvals, filings & regulatory actions · 3 recorded

MilestoneJurisdictionBrandIndicationDateSentence it was read from
Filed hemophilia B leyden 2 milestones
Filed EU (EMA) — hemophilia B leyden 2023-12-11

“The European marketing authorization application (MAA) for marstacimab also passed validation and is currently under review by the European Medicines Agency (EMA).” pfizer.com ↗

Filed US (FDA) — hemophilia B leyden 2023-12-11

“FDA has accepted the company’s Biologics License Application (BLA) for its anti-tissue factor pathway inhibitor (anti-TFPI) candidate marstacimab” pfizer.com ↗

Approved Indication not stated 1 milestone
Approved EU (EMA) Hympavzi — 2024-11-18 europa.eu ↗

Trials 9

PhaseRegistry idDatesIndicationSponsorStatusOutcome
Phase 14 trials
Phase 1 NCT06703606 May 2025 → May 2027 expected severe hemophilia A Pfizer Recruiting No outcome recorded
Phase 1 NCT04878731 Apr → Aug 2021 hemophilia Pfizer Completed No outcome recorded
Phase 1 NCT04832139 Mar → Nov 2021 — Pfizer Terminated No outcome recorded
Phase 1 NCT02531815 Aug 2015 → Jul 2016 — Pfizer Completed No outcome recorded
Phase 22 trials
Phase 2 NCT03363321 May 2018 → Aug 2020 hemophilia Pfizer Completed No outcome recorded
Phase 2 NCT02974855 Mar 2017 → Dec 2018 hemophilia Pfizer Completed No outcome recorded
Phase 33 trials · 1 met primary
Phase 3 NCT05611801 Dec 2022 → Sep 2028 expected hemophilia A, hemophilia B Pfizer Recruiting No outcome recorded
Phase 3 NCT05145127 Nov 2021 → Jul 2030 expected hemophilia A, hemophilia B Pfizer Recruiting No outcome recorded
Phase 3 NCT03938792 Mar 2020 → Apr 2025 hemophilia A, hemophilia B Pfizer Completed Met primary

News releases announcing trial results or a regulatory action · 10

DateIssuerRelease
2026-06-08 Pfizer Regulatory U.S. FDA Approves Pfizer’s HYMPAVZI for the Treatment of Two Additional Hemophilia A or B Patient Populations with Significant Medical Need pfizer.com ↗
Pfizer Inc. (NYSE: PFE) today announced that the U.S. Food and Drug Administration (FDA) has approved an expanded indication for HYMPAVZI ® (marstacimab-hncq) to include the treatment of patients with hemophilia A or B 12 years and older with inhibitors and pediatric patients (ages 6 to 11 years) with or without inhibitors.
2026-05-13 Pfizer Regulatory European Commission Approves Pfizer’s HYMPAVZI for the Treatment of Adults and Adolescents with Hemophilia A or B With Inhibitors pfizer.com ↗
Pfizer Inc. (NYSE: PFE) today announced that the European Commission (EC) has granted marketing authorization to expand the approved indication for HYMPAVZI ® (marstacimab) to include patients 12 years of age and older weighing at least 35 kg with hemophilia A (congenital factor VIII [FVIII] deficiency) with FVIII inhibitors or hemophilia B (congenital factor IX [FIX] deficiency) with FIX inhibitors.
2026-02-06 Pfizer Regulatory FDA Grants Priority Review for HYMPAVZI® (marstacimab) sBLA for the Treatment of Two Hemophilia A or B Patient Populations with Significant Medical Need pfizer.com ↗
The FDA has set a Prescription Drug User Fee Act (PDUFA) action date in the second quarter of 2026.
2025-12-06 Pfizer Results HYMPAVZI® (marstacimab) Reduced Bleeds by 93% Compared to On-Demand Treatment in Adults and Adolescents with Hemophilia A or B with Inhibitors pfizer.com ↗
Pfizer Inc. (NYSE: PFE) today presented results from the Phase 3 BASIS study ( NCT03938792 ) evaluating HYMPAVZI ® (marstacimab) for adults and adolescents living with hemophilia A or B with inhibitors.
2025-06-26 Pfizer Results Pfizer Announces Positive Topline Phase 3 Results for HYMPAVZI™ in Hemophilia A or B with Inhibitors pfizer.com ↗
Pfizer Inc. (NYSE: PFE) today announced positive topline results from the Phase 3 BASIS study ( NCT03938792 ) evaluating HYMPAVZI™ (marstacimab) for adults and adolescents living with hemophilia A or B with inhibitors.
2024-11-20 Pfizer Regulatory European Commission Approves Pfizer’s HYMPAVZI™ (marstacimab) for the Treatment of Adults and Adolescents with Severe Hemophilia A or B Without Inhibitors pfizer.com ↗
Pfizer Inc. (NYSE: PFE) announced today that the European Commission (EC) has granted marketing authorization for HYMPAVZI™ (marstacimab) for the routine prophylaxis of bleeding episodes in patients 12 years of age and older weighing at least 35 kg with severe hemophilia A (congenital factor VIII [FVIII] deficiency, FVIII <1%) without FVIII inhibitors or severe hemophilia B (congenital factor IX [FIX] deficiency, FIX <1%) without FIX inhibitors.
2024-10-11 Pfizer Regulatory U.S. FDA Approves Pfizer’s HYMPAVZI™ (marstacimab-hncq) for the Treatment of Adults and Adolescents with Hemophilia A or B Without Inhibitors pfizer.com ↗
HYMPAVZI is the first and only anti-tissue factor pathway inhibitor (anti-TFPI) approved in the U.S. for the treatment of hemophilia A or B and the first hemophilia medicine approved in the U.S. to be administered via a pre-filled, auto-injector pen.
2023-12-11 Pfizer Regulatory FDA and EMA Accept Marstacimab Regulatory Submissions for the Treatment of Hemophilia A and B pfizer.com ↗
The European marketing authorization application (MAA) for marstacimab also passed validation and is currently under review by the European Medicines Agency (EMA).
2023-12-09 Pfizer Results Marstacimab Phase 3 Data Presented at ASH 2023 Demonstrate Significant Bleed Reduction in Hemophilia A and B pfizer.com ↗
Marstacimab reduced annualized bleeding rate by 35% and 92% compared to routine prophylaxis and on-demand treatment in patients with hemophilia A and B without inhibitors, respectively
2023-05-30 Pfizer Results Pfizer Announces Positive Marstacimab Results from Pivotal Phase 3 Hemophilia A and B Trial pfizer.com ↗
Pfizer Inc. (NYSE: PFE) today announced that the pivotal Phase 3 BASIS clinical trial ( NCT03938792 ) evaluating marstacimab has met its primary endpoints, having demonstrated statically significant and clinically meaningful effects.

All press releases naming this drug 11 releases

DateIssuerRelease

Evidence & citations 8 cited values

Every value below carries the sentence it was read from. 11 sources stand behind the page.

FieldValueCited text
Known as marstacimab ClinicalTrials.gov intervention name — accepted as the source's own label NCT05611801 ↗
2

NCT06703606 ↗

NCT04832139 ↗

Known as Hympavzi ChEMBL registry synonym — accepted as the source's own label CHEMBL3990039 ↗
Known as Marstacimab-hncq ChEMBL registry synonym — accepted as the source's own label CHEMBL3990039 ↗
Known as PF-06741086 ClinicalTrials.gov intervention name — accepted as the source's own label NCT04878731 ↗
5

NCT02974855 ↗

NCT02531815 ↗

NCT03363321 ↗

NCT03938792 ↗

NCT05145127 ↗

Action Inhibit “Tissue factor pathway inhibitor inhibitor” CHEMBL3990039 ↗
Modality Monoclonal antibody “an investigational human monoclonal antibody targeting tissue factor pathway inhibitor” PMID 36220152 ↗ Oct 2022
Route Subcutaneous “Cohort 1 (subcutaneous [SC]) PF-06741086, Placebo” NCT02531815 ↗
Target TFPI “Tissue factor pathway inhibitor inhibitor” CHEMBL3990039 ↗