PTG-300 in Subjects With Hereditary Hemochromatosis
Open-label Study of PTG-300 in Subjects With Hereditary Hemochromatosis
1 other identifier
interventional
16
2 countries
11
Brief Summary
This study will be conducted at multiple sites and every patient will get treated with PTG-300. The objective of the study is to assess the effect of PTG-300 in treating adult hereditary hemochromatosis patients.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at below P25 for phase_2
Started Mar 2020
11 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
December 16, 2019
CompletedFirst Posted
Study publicly available on registry
December 18, 2019
CompletedStudy Start
First participant enrolled
March 19, 2020
CompletedPrimary Completion
Last participant's last visit for primary outcome
October 6, 2021
CompletedStudy Completion
Last participant's last visit for all outcomes
February 15, 2022
CompletedResults Posted
Study results publicly available
June 15, 2023
CompletedAugust 20, 2025
May 1, 2023
1.6 years
December 16, 2019
April 18, 2023
August 4, 2025
Conditions
Outcome Measures
Primary Outcomes (2)
Effect of PTG-300 on Transferrin Saturation
Change from Baseline to Week 24 (or End of Treatment) in transferrin saturation (TSAT) as measured by blood laboratory tests.
Week 24 (or End of Treatment if treated for less than 24 weeks)
Effect of PTG-300 on Serum Iron
Change from Baseline to Week 24 (or End of Treatment) in serum iron as measured by blood laboratory tests.
Week 24 (or End of Treatment if treated for less than 24 weeks)
Secondary Outcomes (1)
Effect of PTG-300 on Phlebotomy Frequency
Over 24 weeks
Other Outcomes (2)
Mental Component Summary of SF-36
Week 24 (or End of Treatment if treated for less than 24 weeks)
Physical Component Summary of SF-36
Week 24 (or End of Treatment if treated for less than 24 weeks)
Study Arms (1)
PTG-300
EXPERIMENTALPTG-300 Subcutaneous
Interventions
Eligibility Criteria
You may qualify if:
- Men and women aged 18 and older
- Confirmed diagnosis of HFE-related hereditary hemochromatosis with prior genotype testing
- Documented stable phlebotomy for ≥ 6 months
- Screening hemoglobin \>11.5 g/dL
- Documented evidence of prior serum ferritin ≥500 ng/mL
- Serum ferritin \>50 ng/mL and \<300 ng/mL at screening
You may not qualify if:
- Clinically meaningful laboratory abnormality
- Receiving iron chelation therapy
- Receiving erythrocytapheresis
- Pregnant or lactating females
- Infection requiring hospitalization or intravenous antimicrobial therapy, or opportunistic infection within 3 months of dosing; any infections requiring antimicrobial therapy within 4 weeks of dosing.
- Serious or unstable medical or psychiatric condition that would prevent subject providing informed consent
- Organ damage from iron overload
- Primary or secondary immunodeficiency
- Positive hepatitis B or hepatitis C or known human immunodeficiency virus infection
- Known history of autoimmune/inflammatory diseases
- Any surgical procedures requiring general anesthesia within 1 month prior to screening or planned surgery during study
- History of invasive malignancies within last 2 years, except non-malignant skin cancer and local cured prostate cancer, cervical cancer, or ductal carcinoma in situ
- Receipt of an investigational agent within 30 days of screening
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (11)
Protagonist Investigational Site
Fayetteville, Georgia, 30214, United States
Protagonist Investigational Site
Bethesda, Maryland, 20817, United States
Protagonist Investigational Site
Charlotte, North Carolina, 28210, United States
Protagonist Investigational Site
Conroe, Texas, 77384, United States
Protagonist Investigational Site
Dallas, Texas, 75246, United States
Protagonist Investigational Site
Houston, Texas, 77030, United States
Protagonist Investigational Site
Houston, Texas, 77058, United States
Protagonist Investigational Site
Richmond, Virginia, 23226, United States
Protagonist Investigational Site
Seattle, Washington, 98105, United States
Protagonist Investigational Site
Halifax, Nova Scotia, Canada
Protagonist Investigational Site
Toronto, Ontario, M6H 3M1, Canada
Related Publications (1)
Kowdley KV, Modi NB, Peltekian K, Vierling JM, Ferris C, Valone FH, Gupta S. Rusfertide for the treatment of iron overload in HFE-related haemochromatosis: an open-label, multicentre, proof-of-concept phase 2 trial. Lancet Gastroenterol Hepatol. 2023 Dec;8(12):1118-1128. doi: 10.1016/S2468-1253(23)00250-9. Epub 2023 Oct 17.
PMID: 37863080DERIVED
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Results Point of Contact
- Title
- Clinical Study Director
- Organization
- Protagonist Therapeutics, Inc
Publication Agreements
- PI is Sponsor Employee
- No
- Restrictive Agreement
- Yes
Study Design
- Study Type
- interventional
- Phase
- phase 2
- Allocation
- NA
- Masking
- NONE
- Purpose
- TREATMENT
- Intervention Model
- SINGLE GROUP
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
December 16, 2019
First Posted
December 18, 2019
Study Start
March 19, 2020
Primary Completion
October 6, 2021
Study Completion
February 15, 2022
Last Updated
August 20, 2025
Results First Posted
June 15, 2023
Record last verified: 2023-05
Data Sharing
- IPD Sharing
- Will not share