E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Infantile spasms are a rare severe form of epilepsy affecting approx 1 in 2,250 infants, usually under the age of 1 year. Affected infants have a very abnormal EEG and a poor prognosis for subsequent epilepsy and neuro-development. There is a high risk of underlying neurological disease that independently causes delayed development and other seizure disorders. There is a high risk of a poor outcome even when there is no other detectable underlying neurological disorder. |
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E.1.1.1 | Medical condition in easily understood language |
Infantile spasms are a rare severe form of epilepsy affecting approx 1 in 2,250 infants, usually under the age of 1 year. There is a high risk of poor development and other epilepsy. |
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E.1.1.2 | Therapeutic area | Diseases [C] - Nervous System Diseases [C10] |
MedDRA Classification |
E.1.3 | Condition being studied is a rare disease | Yes |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
The aim of this study is to examine if combining hormonal treatment and vigabatrin is better at controlling infantile spasms and at helping development at 18 months of age than taking a hormonal treatment alone. |
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E.2.2 | Secondary objectives of the trial |
We also wish to investigate adverse reactions, time to elimination of spasms, developmental outcome at 42 months of age, epilepsy outcomes at 18 and 42 months of age and numbers of infants with elimination of both spasms and the EEG appearance with which it is associated.We will also compare the efficacy of the two hormonal treatments in those infants receiving these treatments alone and through random allocation. |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
The clinical features of Infantile Spasms confirmed by the consultant in charge or his/her nominated deputy.
An EEG that is hypsarrhythmic or similar, compatible with the diagnosis of Infantile Spasms.
Signed informed consent has been given.
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E.4 | Principal exclusion criteria |
More than 72 hours has elapsed since the EEG was performed.
More than 72 hours has elapsed since the clinical features were confirmed.
Age less than two months or greater than one year and two months.
A diagnosis or high risk of tuberous sclerosis (known affected parent, previously diagnosed cardiac rhabdomyoma, hypomelanic macules, forehead fibrous plaque, shagreen patch, retinal phakoma or known polycystic kidneys).
Previous treatment for infantile spasms other than a therapeutic trial of pyridoxine to exclude pyridoxine dependent seizures. Note - previous treatment for other seizure types is not a reason for exclusion.
Previous treatment (within the last 28 days) with vigabatrin or hormonal treatments.
A contraindication to vigabatrin or hormonal treatments. A risk of a visual field defect is not considered a contraindication.
A lethal or potentially lethal condition, other than infantile spasms, with a risk of death before 18 months of age.
Doubt about the ability of the parents or guardians to know when the spasms stop.This is likely to include parents known to be intravenous drug abusers.
Unavailable for follow up to 18 months of age.
Those enrolled in a concurrent trial that is still in the active phase.
The language ability of the parents or guardians is such that they may not understand what is being requested of them.
The language ability of the parents or guardians is such that it will not be possible to undertake the Vineland assessment.
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E.5 End points |
E.5.1 | Primary end point(s) |
1. The primary early outcome will be the cessation of spasms. Cessation of spasms is defined as no witnessed spasms on and between Days 14 to 42.
2. The primary late outcome will be development at 18 months of age and will be assessed by the validated Vineland Adaptive Behaviour Scales (VABS).
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
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E.5.2 | Secondary end point(s) |
Electroclinical response
Adverse Reactions
Development at 42 months of age |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
Electroclinical response - 49 days
Adverse reactions - 4 months
Development - 42 months of age |
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E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | No |
E.6.2 | Prophylaxis | No |
E.6.3 | Therapy | Yes |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | Yes |
E.6.6 | Pharmacokinetic | No |
E.6.7 | Pharmacodynamic | No |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | No |
E.6.10 | Pharmacogenetic | No |
E.6.11 | Pharmacogenomic | No |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | Yes |
E.6.13.1 | Other scope of the trial description |
This is a pragmatic trial. |
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E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | No |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | No |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | No |
E.7.3 | Therapeutic confirmatory (Phase III) | No |
E.7.4 | Therapeutic use (Phase IV) | Yes |
E.8 Design of the trial |
E.8.1 | Controlled | Yes |
E.8.1.1 | Randomised | Yes |
E.8.1.2 | Open | Yes |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | No |
E.8.1.5 | Parallel group | Yes |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | No |
E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | Yes |
E.8.2.2 | Placebo | No |
E.8.2.3 | Other | No |
E.8.2.4 | Number of treatment arms in the trial | 3 |
E.8.3 |
The trial involves single site in the Member State concerned
| No |
E.8.4 | The trial involves multiple sites in the Member State concerned | Yes |
E.8.4.1 | Number of sites anticipated in Member State concerned | 20 |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 180 |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | Yes |
E.8.6.2 | Trial being conducted completely outside of the EEA | No |
E.8.6.3 | If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned |
Australia |
Germany |
New Zealand |
Switzerland |
United Kingdom |
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E.8.7 | Trial has a data monitoring committee | Yes |
E.8.8 |
Definition of the end of the trial and justification where it is not the last
visit of the last subject undergoing the trial
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Drug regulatory approval until all participants finish mandatory treatment with any IMP. The initial estimate until this point 5 years 4 months.
Ethics approval until developmental and epilepsy follow up is complete The initial estimate until this end point 7 years 6 months.
We presume the comment below refers to visits during the active phase of the trial where the protocol shows mandatory treatment. We presume this does not include developmental follow up after mandatory treatment. |
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E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | 4 |
E.8.9.1 | In the Member State concerned months | 0 |
E.8.9.1 | In the Member State concerned days | 0 |
E.8.9.2 | In all countries concerned by the trial years | 5 |
E.8.9.2 | In all countries concerned by the trial months | 4 |
E.8.9.2 | In all countries concerned by the trial days | 0 |