Friedreich's AtaxiaPhase 3STEADFASTNCT02593773
Safety, Tolerability and Efficacy of ACTIMMUNE® Dose Escalation in Friedreich's Ataxia Study
A Phase 3 study testing Interferon γ-1b in people with Friedreich's Ataxia, run by Amgen at 4 sites in United States.
Trial summary
The purpose of this phase 3 multi-center, open-label extension study is to evaluate the long-term safety of ACTIMMUNE® (interferon-γ 1b) in participants with Friedreich's Ataxia. Read more about this study
- Who is it for?
- Ages 10 to 26 years
- Conditions the study is for
- Friedreich's Ataxia
- What is being tested?
- Interferon γ-1b
- Type of treatment
- Injection or infusion
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 86 participants
- Where
- 4 sitesUnited States
- Study dates
- 25 Dec 2015to 21 Mar 2017
- Phase
- Phase 3
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 10 to 26 years
- All sexes
- No healthy volunteers
- Child, Adult
Who may be able to join
- Written informed consent and child assent, if applicable.
- Completed 26 weeks of blinded treatment in Study HZNP-ACT-301 (NCT02415127).
- If female, the subject is not pregnant or lactating or intending to become pregnant during the study, or within 30 days after the last dose of study drug. Female subjects of child-bearing potential must have a negative urine pregnancy test result at Baseline/Day 1 (Week 26 of Study HZNP-ACT-301 [NCT02415127]), and agree to use a reliable method of contraception throughout the study and for 30 days after the last dose of study drug.
Who cannot join
- Subjects will be ineligible if, in the opinion of the Investigator, they are unlikely to comply with the study protocol or have a concomitant disease or condition that could interfere with the conduct of the study or potentially put the subject at unacceptable risk.
- NOTE: Additional inclusion/exclusion criteria may apply.
Trial locations and contacts
4 sites in 1 country.
United States4 sites
University of Florida - Clinical Research Center
Gainesville, Florida, 32603
University of Iowa Children's Hospital
Iowa City, Iowa, 52242
University of California, Los Angeles Neurology Clinic
Los Angeles, California, 90038
Children's Hospital of Philadelphia
Philadelphia, Pennsylvania, 19104
About this study
Official title: Multicenter, Safety and Efficacy, Open-Label Extension Study of ACTIMMUNE® (Interferon γ-1b) in Children and Young Adults With Friedreich's Ataxia
The purpose of this phase 3 multi-center, open-label extension study is to evaluate the long-term safety of ACTIMMUNE® (interferon-γ 1b) in participants with Friedreich's Ataxia.
Read the detailed description
Participants who complete 26 weeks of blinded treatment in HZNP-ACT-301 (NCT02415127), will be eligible to enter this 6-month study. All participants will receive ACTIMMUNE® 3 times a week (TIW) for 26 weeks. In order to maintain the study blind in HZNP-ACT-301 (NCT02415127), all participants in this open-label extension study will undergo ACTIMMUNE® titration, regardless if they received ACTIMMUNE® or placebo in HZNP-ACT-301 (NCT02415127). The Week 26 Visit from HZNP-ACT-301 (NCT02415127) will serve as the Baseline Visit (Day 1) for this study. During the treatment period, additional clinic visits are scheduled at Weeks 4, 13, and 26; in between clinic visits, participants (and/or caregivers) will be monitored via emails/phone calls on a weekly basis until participants reach their maximum tolerated dose, and on a monthly basis thereafter.
Study with completed results acquired from Horizon in 2024.
- Conditions
- Friedreich's Ataxia
- Being tested
- Interferon γ-1b
- Keywords
- Interferon gamma
- Medical subject headings
- Friedreich Ataxia
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Interferon γ-1bDrug
Also called ACTIMMUNE®
The study drug dose is planned to be escalated on a weekly basis over the first 4 weeks of treatment (from 10 µg/m² to 25, 50, and 100 µg/m²). The dose may be reduced, interrupted, or held based on tolerability. By Week 13, all participants are to be on a stable tolerated dose of study drug in order to continue study participation; the dose may not be further increased after Week 13, however, it may be reduced on a case-by-case basis to manage drug-related adverse events (AEs).
| Study group | Role | What they receive |
|---|---|---|
| interferon γ-1b | Experimental | Subcutaneous (SC) doses of ACTIMMUNE® TIW for a total of 26 weeks. Receives: Drug: Interferon γ-1b |
What is being measured
The primary outcome is the main question the study is designed to answer.
Number of Participants With Treatment-Emergent Adverse Events (TEAEs), Serious Adverse Events (SAEs), and Discontinuations Due to AEs
An adverse event (AE) is any untoward medical occurrence, whether or not the event is considered related to the investigational product. A TEAE is any adverse change from the subject's baseline condition, including any laboratory test value abnormality judged as clinically significant by the investigator, that occurs on or after the date of the first dose of study drug administered at home and throughout the duration of the clinical study, whether the adverse event is considered related to the treatment or not. An SAE is an AE that results in death, is life-threatening, results in persistent or significant disability or incapacity, inpatient hospitalization or prolongation of an existing hospitalization, is a congenital anomaly or birth defect, or other medically important event.
Measured: Baseline/Day 1 (Week 26 of Study HZNP-ACT-301 [NCT02415127]) through Week 28 (follow-up safety visit)
Number of Participants With Positive/Negative Neutralizing Antibody (NAb) and Anti-Drug Antibody (ADA) Tests
NAb testing only for those participants with a positive ADA test. Baseline is defined as the last non-missing measurement/assessment on the date of Week 26 Visit from study HZNP-ACT-301 (NCT02415127). If this measurement was missing or otherwise unavailable, it was the last non-missing measurement/assessment on or prior to first dose in this study. If the participant discontinued the study, then premature withdrawal assessments were mapped to the nearest scheduled visit based on schedule of the assessment and the study day. If the mapped visit was already available then the visit was mapped to the next schedule visit. Last on study assessment is the last non-missing post-baseline assessment for each participant.
Measured: Baseline/Day 1 (Week 26 of Study HZNP-ACT-301 [NCT02415127]), Week 4, Week 13, Week 26, and Week 28 (follow-up safety visit)
Change From Baseline to Week 26 in the Friedreich's Ataxia Rating Scale (FARS)-mNeuro Score
The FARS assessment includes neurological signs that specifically reflect neural substrates affected in FA. Based on a neurological examination, bulbar, upper limb, lower limb, peripheral nerve, and upright stability/gait functions were assessed. The FARS-mNeuro score excludes the peripheral nervous system subscale score and the facial and tongue atrophy and fasciculations from the bulbar subscale score. Scores range from 0 (normal) to 93 (most impairment). A negative change from baseline is an improvement.
Measured: From Baseline to Week 26 for all participants and from Baseline of HZNP-ACT-301 (NCT02415127)to Week 26 of HZNP-ACT-302 (52-week treatment duration) for participants receiving active treatment in both studies.
Secondary outcomes (4)
Change From Baseline to Week 26 in Activities of Daily Living (ADL) Score
Participants and/or their caregivers rated 9 areas of daily living skills (speech, swallowing, cutting food and handling utensils, dressing, personal hygiene, falling, walking, quality of sitting position, and bladder function) on a 5-point scale (0=normal, 4=greatest loss of function) with allowable increments of 0.5 if the participant or caregiver strongly felt that a task falls between 2 scores. ADL scores can range from 0 (normal) to 36 (greatest loss of function). A negative change from baseline indicates improvement.
Measured: From Baseline to Week 26 for all participants and from Baseline of HZNP-ACT-301 (NCT02415127)to Week 26 of HZNP-ACT-302 (52-week treatment duration) for participants receiving active treatment in both studies.
Change From Baseline at Week 26 in Timed 25-Foot Walk (T25FW)
The T25FW is a quantitative measure of lower extremity function. Participants are directed to 1 end of a clearly marked 25-foot course and instructed to walk 25 feet as quickly as possible, but safely. The task is immediately administered again by having the participant walk back the same distance, and the score for the test is the average of the 2 walks (after reciprocal transformation). Participants may use assistive devices when performing this task, with the same assistive device used at each assessment. A negative change from Baseline indicates improvement.
Measured: From Baseline to Week 26 for all participants and from Baseline of HZNP-ACT-301 (NCT02415127)to Week 26 of HZNP-ACT-302 (52-week treatment duration) for participants receiving active treatment in both studies.
Number of FARS-mNeuro Responders and Non-Responders at Week 26
A participant was considered a responder if they had an improvement (decrease) of at least 3 points from Baseline at Week 26 for the FARS-mNeuro score. The FARS assessment includes neurological signs that specifically reflect neural substrates affected in FA. Based on a neurological examination, bulbar, upper limb, lower limb, peripheral nerve, and upright stability/gait functions were assessed. The FARS-mNeuro score excludes the peripheral nervous system subscale score and the facial and tongue atrophy and fasciculations from the bulbar subscale score. Scores range from 0 (normal) to 93 (most impairment).
Measured: Week 26
Change From Baseline to Week 26 in Total Friedreich Ataxia Rating Scale Score (FARStot)
The FARS assessment includes neurological signs that specifically reflect neural substrates affected in FA. Based on a neurological examination, bulbar, upper limb, lower limb, peripheral nerve, and upright stability/gait functions are assessed. FARStot scores range from 0 (normal) to 125 (most impairment). A negative change from baseline indicates improvement.
Measured: From Baseline to Week 26 for all participants and from Baseline of HZNP-ACT-301 (NCT02415127)to Week 26 of HZNP-ACT-302 (52-week treatment duration) for participants receiving active treatment in both studies.
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted2 Nov 2015 (estimated)
- Study start25 Dec 2015
- Primary completion21 Mar 2017
- Study completion21 Mar 2017
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Other trials for Friedreich's AtaxiaStudies of the same condition, open and under way.
- More trials run by AmgenThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 3
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 86 participants (actual)
Sponsor and investigators
- Lead sponsor
- Amgen
- Sponsor type
- Industry (pharma, biotech, devices)
- Collaborators
- Friedreich's Ataxia Research Alliance
- Responsible party
- Sponsor
- Investigators
- MD, Study director, Amgen
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02593773
- Sponsor's protocol ID
- HZNP-ACT-302
- Acronym
- STEADFAST
- Status last verified
- Nov 2024
- First submitted
- 29 Oct 2015
- Last updated
- 19 Dec 2024
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- Yes
- FDA-regulated drug
- Yes
- Individual data sharing
- Undecided
Study at a glance
From the registry record, last updated by the sponsor on 19 Dec 2024. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Multicenter, Safety and Efficacy, Open-Label Extension Study of ACTIMMUNE® (Interferon γ-1b) in Children and Young Adults With Friedreich's Ataxia
- ClinicalTrials.gov ID
- NCT02593773
- Acronym / sponsor ID
- STEADFAST / HZNP-ACT-302
- Conditions
- Friedreich's Ataxia
- Keywords
- Interferon gamma
- Phase
- Phase 3
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 86 participants (actual)
- Lead sponsor
- AmgenIndustry (pharma, biotech, devices)
- Collaborators
- Friedreich's Ataxia Research Alliance
- Study start
- 25 Dec 2015 (actual)
- Primary completion
- 21 Mar 2017 (actual)
- Study completion
- 21 Mar 2017 (actual)
- First posted
- 2 Nov 2015 (estimated)
- Results
- Posted 18 May 2018
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The purpose of this phase 3 multi-center, open-label extension study is to evaluate the long-term safety of ACTIMMUNE® (interferon-γ 1b) in participants with Friedreich's Ataxia.
Detailed description
Participants who complete 26 weeks of blinded treatment in HZNP-ACT-301 (NCT02415127), will be eligible to enter this 6-month study. All participants will receive ACTIMMUNE® 3 times a week (TIW) for 26 weeks. In order to maintain the study blind in HZNP-ACT-301 (NCT02415127), all participants in this open-label extension study will undergo ACTIMMUNE® titration, regardless if they received ACTIMMUNE® or placebo in HZNP-ACT-301 (NCT02415127). The Week 26 Visit from HZNP-ACT-301 (NCT02415127) will serve as the Baseline Visit (Day 1) for this study. During the treatment period, additional clinic visits are scheduled at Weeks 4, 13, and 26; in between clinic visits, participants (and/or caregivers) will be monitored via emails/phone calls on a weekly basis until participants reach their maximum tolerated dose, and on a monthly basis thereafter.
Study with completed results acquired from Horizon in 2024.
Study design
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| interferon γ-1b | Experimental | Drug: Interferon γ-1bSubcutaneous (SC) doses of ACTIMMUNE® TIW for a total of 26 weeks. |
Who may qualify
- Ages
- 10 to 26 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Child, Adult
Key inclusion criteria (3 listed)
- Written informed consent and child assent, if applicable.
- Completed 26 weeks of blinded treatment in Study HZNP-ACT-301 (NCT02415127).
- If female, the subject is not pregnant or lactating or intending to become pregnant during the study, or within 30 days after the last dose of study drug. Female subjects of child-bearing potential must have a negative urine pregnancy test result at Baseline/Day 1 (Week 26 of Study HZNP-ACT-301 [NCT02415127]), and agree to use a reliable method of contraception throughout the study and for 30 days after the last dose of study drug.
Key exclusion criteria (2 listed)
- Subjects will be ineligible if, in the opinion of the Investigator, they are unlikely to comply with the study protocol or have a concomitant disease or condition that could interfere with the conduct of the study or potentially put the subject at unacceptable risk.
- NOTE: Additional inclusion/exclusion criteria may apply.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Interferon γ-1bAlso: ACTIMMUNE®The study drug dose is planned to be escalated on a weekly basis over the first 4 weeks of treatment (from 10 µg/m² to 25, 50, and 100 µg/m²). The dose may be reduced, interrupted, or held based on tolerability. By Week 13, all participants are to be on a stable tolerated dose of study drug in order to continue study participation; the dose may not be further increased after Week 13, however, it may be reduced on a case-by-case basis to manage drug-related adverse events (AEs). | Drug | interferon γ-1b |
Primary outcome
Number of Participants With Treatment-Emergent Adverse Events (TEAEs), Serious Adverse Events (SAEs), and Discontinuations Due to AEs
Time frame: Baseline/Day 1 (Week 26 of Study HZNP-ACT-301 [NCT02415127]) through Week 28 (follow-up safety visit)
An adverse event (AE) is any untoward medical occurrence, whether or not the event is considered related to the investigational product. A TEAE is any adverse change from the subject's baseline condition, including any laboratory test value abnormality judged as clinically significant by the investigator, that occurs on or after the date of the first dose of study drug administered at home and throughout the duration of the clinical study, whether the adverse event is considered related to the treatment or not. An SAE is an AE that results in death, is life-threatening, results in persistent or significant disability or incapacity, inpatient hospitalization or prolongation of an existing hospitalization, is a congenital anomaly or birth defect, or other medically important event.
Number of Participants With Positive/Negative Neutralizing Antibody (NAb) and Anti-Drug Antibody (ADA) Tests
Time frame: Baseline/Day 1 (Week 26 of Study HZNP-ACT-301 [NCT02415127]), Week 4, Week 13, Week 26, and Week 28 (follow-up safety visit)
NAb testing only for those participants with a positive ADA test. Baseline is defined as the last non-missing measurement/assessment on the date of Week 26 Visit from study HZNP-ACT-301 (NCT02415127). If this measurement was missing or otherwise unavailable, it was the last non-missing measurement/assessment on or prior to first dose in this study. If the participant discontinued the study, then premature withdrawal assessments were mapped to the nearest scheduled visit based on schedule of the assessment and the study day. If the mapped visit was already available then the visit was mapped to the next schedule visit. Last on study assessment is the last non-missing post-baseline assessment for each participant.
Change From Baseline to Week 26 in the Friedreich's Ataxia Rating Scale (FARS)-mNeuro Score
Time frame: From Baseline to Week 26 for all participants and from Baseline of HZNP-ACT-301 (NCT02415127)to Week 26 of HZNP-ACT-302 (52-week treatment duration) for participants receiving active treatment in both studies.
The FARS assessment includes neurological signs that specifically reflect neural substrates affected in FA. Based on a neurological examination, bulbar, upper limb, lower limb, peripheral nerve, and upright stability/gait functions were assessed. The FARS-mNeuro score excludes the peripheral nervous system subscale score and the facial and tongue atrophy and fasciculations from the bulbar subscale score. Scores range from 0 (normal) to 93 (most impairment). A negative change from baseline is an improvement.
4 secondary outcomes
Change From Baseline to Week 26 in Activities of Daily Living (ADL) Score
Time frame: From Baseline to Week 26 for all participants and from Baseline of HZNP-ACT-301 (NCT02415127)to Week 26 of HZNP-ACT-302 (52-week treatment duration) for participants receiving active treatment in both studies.
Change From Baseline at Week 26 in Timed 25-Foot Walk (T25FW)
Time frame: From Baseline to Week 26 for all participants and from Baseline of HZNP-ACT-301 (NCT02415127)to Week 26 of HZNP-ACT-302 (52-week treatment duration) for participants receiving active treatment in both studies.
Number of FARS-mNeuro Responders and Non-Responders at Week 26
Time frame: Week 26
Change From Baseline to Week 26 in Total Friedreich Ataxia Rating Scale Score (FARStot)
Time frame: From Baseline to Week 26 for all participants and from Baseline of HZNP-ACT-301 (NCT02415127)to Week 26 of HZNP-ACT-302 (52-week treatment duration) for participants receiving active treatment in both studies.
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 19 Dec 2024.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Individual participant dataSharing planned: Undecided
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
MD study director
Amgen
4 sites in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 3 study testing Interferon γ-1b in people with Friedreich's Ataxia, run by Amgen at 4 sites in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 2 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 19 Dec 2024. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 4 sites in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Yes. Results are posted in the registry (first posted 18 May 2018). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Number of Participants With Treatment-Emergent Adverse Events (TEAEs), Serious Adverse Events (SAEs), and Discontinuations Due to AEs (time frame: Baseline/Day 1 (Week 26 of Study HZNP-ACT-301 [NCT02415127]) through Week 28 (follow-up safety visit)). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 19 Dec 2024.