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Study to Evaluate the Long-term Safety of Rusfertide (PTG-300) in Subjects With Polycythemia Vera

An Extension Study to Evaluate the Long-term Safety of Rusfertide (PTG-300) in Subjects With Polycythemia Vera (THRIVE)

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06033586
Acronym
THRIVE
Enrollment
46
Registered
2023-09-13
Start date
2024-01-22
Completion date
2027-04-01
Last updated
2025-08-06

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Polycythemia Vera

Brief summary

The goal of this clinical trial is to assess long-term safety and efficacy of rusfertide in subjects with polycythemia vera. Subjects who complete dosing with rusfertide until the end-of-treatment visit of a Phase 2 rusfertide study and meet the inclusion/exclusion criteria for this study, are eligible to participate in this open-label study and continue treatment with rusfertide.

Detailed description

This is an open-label study designed to assess the long-term safety and efficacy of rusfertide. This study aims to provide long-term rusfertide treatment to subjects who complete dosing until the end-of-treatment of a previous Phase 2 rusfertide study and are likely to continue benefiting from treatment with rusfertide based on their improved control of hematocrit levels \<45% and reduced need for therapeutic phlebotomies. This study will provide long-term rusfertide treatment to these subjects and obtain data on safety and efficacy of long-term treatment with rusfertide.

Interventions

DRUGOpen-label rusfertide

subcutaneous rusfertide

Sponsors

Protagonist Therapeutics, Inc.
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Intervention model description

Open-label rusfertide

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Subject who has completed at least 12 months of dosing with rusfertide and successfully completed the end of treatment visit of a previous Phase 2 study of rusfertide. * Subject understands the study procedures, is willing and able to adhere to study requirements and agrees to participate in the study by giving written informed consent. Key

Exclusion criteria

* Subject who, in the opinion of the investigator, should not participate in the study. * Subject who discontinue early from a previous rusfertide study for reasons other than enrolling in this study. * Pregnant or lactating females. * Women of childbearing potential (WOCBP) who do not agree to use medically acceptable contraception (\<1% annual failure rate) during the study and for 30 days after the last dose of study drug. * Men with partners of childbearing potential who do not agree to use medically acceptable contraception (\<1% annual failure rate) during the study and for 90 days after the last dose of study drug. * Men who do not agree to use a condom during the study and for 90 days after the last dose of study drug regardless of the partner's childbearing potential. * A female subject intends to donate eggs (ova, oocytes) for the purposes of assisted reproduction during the study and for a period of 30 days after receiving the last dose of study drug. * A male subject intends to donate sperm for the purpose of reproduction during the study and for a minimum of 90 days after receiving the last dose of study drug. * Plan to use investigational treatment other than rusfertide during the course of the study or within 28 days after last rusfertide dose. * Subject with hypersensitivity to rusfertide or to any of the excipients. * In the investigator's opinion the subject has progressive disease that cannot be managed by adjusting concurrent cytoreductive therapy.

Design outcomes

Primary

MeasureTime frameDescription
Hematocrit0-2 yearsMedian hematocrit
Phlebotomies0-2 yearsNumber of phlebotomies

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 5, 2026