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Interferon γ-1b

Phase 3

Friedreich's Ataxia | Small molecule | Rare Disease |Amgen Inc.|Last Updated: Dec 19, 2024

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials3
Total Enrollment216

FDA Designations

No designations recorded

Clinical trial landscape

Interferon γ-1b · 3 trials · 1 indication

Phase 3 3
NCT02797080Long-Term Safety Extension Study of ACTIMMUNE® (Interferon γ-1b) in Children and Young Adults With Friedreich's AtaxiaFriedreich's Ataxia
COMPLETED38 Analytics
NCT02593773Safety, Tolerability and Efficacy of ACTIMMUNE® Dose Escalation in Friedreich's Ataxia StudyFriedreich's Ataxia
COMPLETED86 Analytics
NCT02415127Safety, Tolerability and Efficacy of ACTIMMUNE® Dose Escalation in Friedreich's AtaxiaFriedreich's Ataxia
COMPLETED92 Analytics
PHASE3COMPLETED
Long-Term Safety Extension Study of ACTIMMUNE® (Interferon γ-1b) in Children and Young Adults With Friedreich's Ataxia
Friedreich's AtaxiaUnlock trial analytics
PHASE3COMPLETED
Safety, Tolerability and Efficacy of ACTIMMUNE® Dose Escalation in Friedreich's Ataxia Study
Friedreich's AtaxiaUnlock trial analytics
PHASE3COMPLETED
Safety, Tolerability and Efficacy of ACTIMMUNE® Dose Escalation in Friedreich's Ataxia
Friedreich's AtaxiaUnlock trial analytics

Study Endpoints

Primary Endpoints

Number of Participants With Treatment-Emergent Adverse Events (AEs), Serious Adverse Events (SAEs), and Discontinuations Due to AEs
Baseline/Day 1 (Week 28 Follow-Up Visit for Study HZNP-ACT-302 ([NCT02593773]) through end of study; mean (SD) duration of treatment was 99.2 (58.48) days.

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. A serious AE (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 Treatment-Emergent Adverse Events (TEAEs), Serious Adverse Events (SAEs), and Discontinuations Due to AEs
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
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
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.

Secondary Endpoints

Change From Baseline to Week 26 in Activities of Daily Living (ADL) Score
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)
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
Week 26
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
interferon γ-1bEXPERIMENTALACTIMMUNE® will be administered 3 times per week (TIW) by subcutaneous (SC) injection.
PlaceboPLACEBO_COMPARATORApproximately 45 participants will receive SC doses of placebo TIW for a total of 26 weeks.

Interventions

NameTypeDescription
interferon γ-1bDRUGACTIMMUNE® will be administered three times per week by subcutaneous injection. The initial dose will be individualized for each participant and will be determined by the investigator, provided that the initial dose does not exceed the maximum tolerated dose in HZNP-ACT-302 (NCT02593773). The investigator may subsequently adjust the dose for any participant if deemed clinically appropriate, provided that the dose does not exceed 100 μg/m².
PlaceboDRUGThe volume of placebo is planned to correspond with volume of study drug that would be given to the participant if the participant was randomized to the study drug arm.
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Eligibility Criteria

Age Range11 Years to 27 Years
SexALL
Healthy VolunteersNo
Study Sites4

Inclusion Criteria: * Written informed consent and child assent, if applicable. * Completed 26 weeks of treatment and the Week 28 Follow-Up visit in Study HZNP-ACT-302 (NCT02593773). * If female, the subject is not pregnant or lactating or intending to become pregnant during the study, or within 30...

Countries:United States
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Frequently asked questions about Interferon γ-1b

What is Interferon γ-1b used for in Friedreich's Ataxia?

Interferon γ-1b is an investigational treatment for Friedreich's Ataxia, a rare inherited disease that causes progressive nervous system damage. It is being studied to evaluate its safety, tolerability, and efficacy in patients with this condition. The drug is administered as a dose escalation regimen in clinical trials.

Who makes Interferon γ-1b?

Interferon γ-1b is developed by Amgen Inc., a biopharmaceutical company traded on the NASDAQ under the ticker symbol AMGN. Amgen is conducting clinical trials to assess the drug's potential as a treatment for Friedreich's Ataxia.

What phase is Interferon γ-1b in?

Interferon γ-1b is in Phase 3 clinical development for Friedreich's Ataxia. It is an investigational drug, meaning it has not been approved by regulatory authorities. All three Phase 3 trials have been completed, with a total of 216 participants enrolled across the studies.

What clinical trials is Interferon γ-1b in?

Interferon γ-1b has been studied in three completed Phase 3 trials for Friedreich's Ataxia. These include NCT02415127 and NCT02593773, both evaluating safety, tolerability, and efficacy of dose escalation, and NCT02797080, a long-term safety extension study in children and young adults. All trials were conducted in the United States.

Is Interferon γ-1b the same as ACTIMMUNE?

Yes, Interferon γ-1b is also known as ACTIMMUNE. The clinical trials for Friedreich's Ataxia reference ACTIMMUNE in their titles, indicating that ACTIMMUNE is the brand name for this investigational drug. Both names refer to the same product being developed by Amgen.

How does Interferon γ-1b work?

Interferon γ-1b is a small molecule that works by modulating the immune system. It is designed to target pathways involved in inflammation and cellular stress, which are thought to contribute to the progression of Friedreich's Ataxia. The exact mechanism in this condition is still under investigation.