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临床试验/NCT05407727
NCT05407727已完成不适用

A Prospective, Remote Observational Study in Pediatric Participants With Early-Onset SCN2A-Developmental and Epileptic Encephalopathy

Praxis Precision Medicines1 个研究点 分布在 1 个国家目标入组 5 人开始时间: 2022年4月15日最近更新:
适应症

试验速览

阶段
不适用
状态
已完成
入组人数
5
试验地点
1
主要终点
Assess disease burden and any variation in disease progression over time, as reflected by electrographic seizures, interictal epileptiform discharges (IEDs), and spectral features, as measured on at-home video electroencephalograms (vEEGs)

研究概览

简要总结

This prospective observational study is designed to assess the individualized baseline disease burden in pediatric participants aged 1 year to 16 years, with early-onset SCN2A-DEE by characterizing and quantifying changes in clinical features over a period of up to 12 months.

研究设计

研究类型
Observational
观察模型
Cohort
时间视角
Prospective

入排标准

年龄范围
1 Year 至 16 Years(Child)
性别
All
接受健康志愿者

入选标准

  • The participant has a documented SCN2A variant through genetic testing obtained via a laboratory accredited per Clinical Laboratory Improvement Amendments (CLIA) or College of American Pathologists (CAP) or equivalent.
  • The participant has onset of seizures prior to 1 month of age.
  • The participant has a phenotype consistent with a developmental and epileptic encephalopathy (DEE).
  • The participant has a minimum of 8 countable motor seizures (as defined in the note below) in the 4 weeks prior to Screening, as reported by the parent/guardian or in the opinion of the investigator, as documented within the medical notes. (Note: Motor seizures are defined as tonic, tonic-clonic, atonic/drop attacks, focal with secondary generalization, or focal with motor symptoms. Myoclonic seizures or absence seizures only will not be considered as motor seizures for this study.)

排除标准

  • The participant has any significant ongoing disease, disorder, laboratory abnormalities, alcohol or drug abuse or dependence, environmental factor, or any ongoing or history of any psychiatric, medical, or surgical condition that in the judgment of the investigator in consultation with the medical monitor and/or sponsor's designee, might jeopardize the participant's safety, impact the scientific objectives of the clinical study, or interfere with participation in the clinical study.
  • The participant has a clinically significant genetic variant other than an SCN2A variant that may explain or contribute to the participant's epilepsy and/or developmental disorder.
  • The participant has any other or additional etiology for epilepsy and/or DEE (eg, cortical dysplasia, encephalomalacia, etc), in the opinion of the investigator.
  • The participant has received any experimental or investigational drug within 30 days or 5 half lives (whichever is longer) prior to Screening, including any prior use of gene therapy.

结局指标

主要结局

Assess disease burden and any variation in disease progression over time, as reflected by electrographic seizures, interictal epileptiform discharges (IEDs), and spectral features, as measured on at-home video electroencephalograms (vEEGs)

时间窗: Up to 12 months

次要结局

  • Association between age at seizure onset and dynamic clamp-based SCN2A variant characterization(Up to 12 months)
  • Frequency of seizures captured via seizure diary and EEG features at each timepoint and longitudinally(Up to 12 months)
  • Changes in clinical seizures captured via seizure diary and EEG-based outcome measures as a function of age and SCN2A variant(Up to 12 months)
  • Intercurrent events as a function of age, SCN2A variant, and medications(Up to 12 months)
  • Association between EEG features and seizures captured via seizure diary(Up to 12 months)

研究者

申办方类型
Industry
责任方
Sponsor

研究点 (1)

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