A Phase 2a, Randomized, Double-Blind, Placebo-Controlled Dose Comparison and Exploratory Efficacy Study of Orally Administered SAT-3247 in Ambulatory DMD Patients
试验速览
- 阶段
- 2 期
- 状态
- 招募中
- 入组人数
- 51
- 试验地点
- 22
- 主要终点
- Safety of SAT-3247
研究概览
简要总结
Phase 2a trial of SAT-3247 in ambulatory DMD patients aged ≥ 7 and < 10 years. The trial has two parts. In Part 1, the trial will study two doses of SAT-3247 in a randomized, double-blind, placebo-controlled weekday regimen for 12 weeks to determine the optimal dose, safety, tolerability, and preliminary efficacy. In Part 2, the trial will study two doses of SAT-3247 for an additional 9 months.
详细描述
This is a global phase 2a trial of SAT-3247 in ambulatory DMD patients aged ≥ 7 and < 10 years. The trial has two parts. In Part 1, the trial will study two doses of SAT-3247 in a randomized, double-blind, placebo-controlled weekday regimen for 12 weeks to determine the optimal dose, safety, tolerability, and preliminary efficacy. In Part 2, the trial will study two doses of SAT-3247 for an additional 9 months. One dose of SAT-3247 and placebo will be studied in the US and Canada; two doses of SAT-3247 and placebo will be studied in UK, EU, Serbia, and Australia.
Enrollment of up to 51 ambulatory DMD participants aged ≥ 7 and < 10 years of age is planned globally. Randomization will be stratified by baseline corticosteroid regimen and prior DMD concomitant medications.
In Part 1, each participant will receive once daily doses of SAT-3247 or matched placebo for 12 weeks. In Part 2, each participant will receive a once daily dose of SAT-3247 for an additional 9 months.
Participants will be screened within 28 days before initiating dosing of investigational product at Baseline. Following the Screening period, participants will complete a Baseline visit (Visit 2), a follow-up phone call at Week 1, and visits at Week 4 (Visit 3), Week 8 (Visit 4), Week 12 (Visit 5), Week 24 (Visit 6), Week 36 (Visit 7) and Week 48 (Visit 8).
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
盲法说明
double-blind
入排标准
- 年龄范围
- 7 Years 至 9 Years（Child）
- 性别
- Male
- 接受健康志愿者
- 否
入选标准
- •Has a definitive diagnosis of DMD based on documented clinical findings and prior genetic testing with a confirmed mutation in the DMD gene.
- •Male DMD patients who are ambulatory and aged ≥ 7 to < 10 years at the time of screening.
- •Stable dose of systemic glucocorticoids (i.e., prednisolone, deflazacort, or vamorolone) according to the standard of care for ≥ 3 months prior to the Screening Visit and for the duration of the trial. Patients who are not receiving glucocorticosteroids are also eligible if stopped ≥ 3 months prior to the Screening Visit.
- •Stable doses of prescription medicines including ACE inhibitors, β-blockers, and diuretics (excluding glucocorticosteroids) and over-the-counter medicines and/or herbal supplements for supportive care ≥ 1 month prior to the Screening Visit and for the duration of the trial.
- •Participants that have previously received delandistrogene moxeparvovec (brand name Elevidys) either in a prior clinical trial or in the commercial setting > 18 months prior to screening whose muscle function tests have stabilized or demonstrated decline ≥ 3 months prior to Screening, as determined by investigator and documented in chart notes, will be eligible.
- •Participants that have previously received an exon skipper > 6 months prior to Screening whose muscle function tests have stabilized or demonstrated decline ≥ 3 months prior to Screening, as determined by investigator and documented in chart notes, will be eligible.
- •Participants receiving a stable dose of givinostat (brand name Duvyzat) for at least 18 months or longer prior to the Screening Visit will be eligible. Participants unable to tolerate givinostat who discontinued treatment before 18 months are eligible to enroll if date of last dose is ≥ 30 days from the Screening date. Givinostat should not be discontinued, if tolerated, to meet study entry criteria.
- •Participants that have received prior treatment with an investigational gene therapy product (other than delandistrogene moxeparvovec) ≥ 24 months prior to the Screening Visit.
- •If participating in a physical therapy/strength training regimen, must be stable for ≥ 2 months prior to the Screening Visit and for the duration of the trial.
排除标准
- •Ambulatory patients expected to experience loss of ambulation within ≤ 12 months.
- •Participants for whom MRI or open muscle biopsy are contraindicated.
- •Evidence of significant hepatic dysfunction, defined as GLDH > 2X upper limit of normal (ULN) at the Screening Visit.
- •Impaired cardiac function defined as a left ventricular ejection fraction of < 50% on screening cardiac assessments (echocardiogram or MRI) or evidence of symptomatic cardiomyopathy.
- •A forced vital capacity < 60% predicted at the Screening Visit.
- •Ongoing participation in any other therapeutic clinical trial or follow-up study for a therapeutic intervention
- •Consumption of grapefruit juice or grapefruit containing products
- •Severe behavioural or cognitive problems that preclude participation in the study, in the opinion of the investigator.
- •Additional entry criteria will be reviewed with the clinical site investigator.
研究组 & 干预措施
placebo
Part 1: placebo oral tablets administered daily for 12 weeks
干预措施: Placebo (Drug)
SAT-3247 60 mg
Part 1: SAT-3247 60 mg oral tablets administered daily for 12 weeks. Part 2: SAT-3247 60 mg oral tablets administered daily for an additional 9 months after completing Part 1
干预措施: SAT-3247 (Drug)
SAT-3247 120 mg
Part 1: SAT-3247 120 mg oral tablets administered daily for 12 weeks. Part 2: SAT-3247 120 mg oral tablets administered daily for an additional 9 months after completing Part 1; note the 120 mg dose will not be studied in the US and Canada
干预措施: SAT-3247 (Drug)
结局指标
主要结局
Safety of SAT-3247
时间窗: 12 weeks in Part 1 and up to 12 months in part 2
Occurrence of treatment emergent adverse events and relationship to investigational product
Tolerability of SAT-3247
时间窗: 12 weeks in Part 1 and up to 12 months in Part 2
occurrence of clinically significant changes in physical exam, clinical laboratory measures, vital signs, and ECG
SAT-3247 effects on muscle strength
时间窗: 12 weeks in Part 1 and up to 12 months in Part 2
change from baseline in muscle force as determined by dynamometry
Safety of SAT-3247
时间窗: 12 weeks
Occurrence of treatment emergent adverse events and relationship to investigational product
Tolerability of SAT-3247
时间窗: 12 weeks
occurrence of clinically significant changes in physical exam, clinical laboratory measures, vital signs, and ECG
SAT-3247 effects on muscle strength
时间窗: 12 weeks
change from baseline in muscle force as determined by dynamometry
次要结局
- SAT-3247 effects on muscle quality(12 weeks in Part 1 and up to 12 months in Part 2)
- SAT-3247 effects on muscle function(12 weeks in Part 1 and up to 12 months in Part 2)
- SAT-3247 effects on muscle function(12 weeks)
- SAT-3247 effects on muscle quality(12 weeks)
- SAT-3247 effects on muscle regeneration(12 weeks)