NCT04202965

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

90
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
16

participants targeted

Target at below P25 for phase_2

Timeline
Completed

Started Mar 2020

Geographic Reach
2 countries

11 active sites

Status
completed

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

Completed
2 days until next milestone

First Posted

Study publicly available on registry

December 18, 2019

Completed
3 months until next milestone

Study Start

First participant enrolled

March 19, 2020

Completed
1.6 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

October 6, 2021

Completed
4 months until next milestone

Study Completion

Last participant's last visit for all outcomes

February 15, 2022

Completed
1.3 years until next milestone

Results Posted

Study results publicly available

June 15, 2023

Completed
Last Updated

August 20, 2025

Status Verified

May 1, 2023

Enrollment Period

1.6 years

First QC Date

December 16, 2019

Results QC Date

April 18, 2023

Last Update Submit

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

EXPERIMENTAL

PTG-300 Subcutaneous

Drug: PTG-300

Interventions

Active treatment with PTG-300 injected subcutaneously.

Also known as: Rusfertide
PTG-300

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

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

Location

Protagonist Investigational Site

Bethesda, Maryland, 20817, United States

Location

Protagonist Investigational Site

Charlotte, North Carolina, 28210, United States

Location

Protagonist Investigational Site

Conroe, Texas, 77384, United States

Location

Protagonist Investigational Site

Dallas, Texas, 75246, United States

Location

Protagonist Investigational Site

Houston, Texas, 77030, United States

Location

Protagonist Investigational Site

Houston, Texas, 77058, United States

Location

Protagonist Investigational Site

Richmond, Virginia, 23226, United States

Location

Protagonist Investigational Site

Seattle, Washington, 98105, United States

Location

Protagonist Investigational Site

Halifax, Nova Scotia, Canada

Location

Protagonist Investigational Site

Toronto, Ontario, M6H 3M1, Canada

Location

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.

MeSH Terms

Conditions

Hemochromatosis

Condition Hierarchy (Ancestors)

Metal Metabolism, Inborn ErrorsMetabolism, Inborn ErrorsGenetic Diseases, InbornCongenital, Hereditary, and Neonatal Diseases and AbnormalitiesIron OverloadIron Metabolism DisordersMetabolic DiseasesNutritional and Metabolic Diseases

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
Model Details: Single Arm Study
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

Locations