E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Leber Congenital Amaurosis 10 (LCA10) due to c.2991+1655A>G mutation (p.Cys998X) in the CEP290 Gene |
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E.1.1.1 | Medical condition in easily understood language |
LCA10 due to a specific mutation in the CEP290 gene called c.2991+1655A>G or p.Cys998X |
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E.1.1.2 | Therapeutic area | Diseases [C] - Eye Diseases [C11] |
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 20.0 |
E.1.2 | Level | PT |
E.1.2 | Classification code | 10070667 |
E.1.2 | Term | Leber's congenital amaurosis |
E.1.2 | System Organ Class | 10010331 - Congenital, familial and genetic disorders |
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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 primary objective of the study is to evaluate safety and tolerability of sepofarsen in pediatric subjects aged <8 years |
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E.2.2 | Secondary objectives of the trial |
The secondary objectives of the study are to evaluate the effect of sepofarsen on structural and functional ophthalmic outcome measures. |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
1. Male or female child, <8 years of age at Screening 2. A clinical diagnosis of LCA and a molecular diagnosis of homozygosity or compound heterozygosity for the c.2991+1655A>G mutation in the CEP290 gene, based on genotyping analysis at Screening. Historic genotyping results from a certified laboratory are acceptable with Sponsor approval. 3. Best corrected visual acuity (BCVA) equal to or better than Light Perception, and equal to or worse than approximate Snellen equivalent 20/50 in the treatment eye. 4. Clear ocular media and adequate pupillary dilation to permit good quality retinal imaging, as determined by the Investigator. |
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E.4 | Principal exclusion criteria |
1.Presence of additional homozygous or compound heterozygous pathogenic mutations (other than the c.2991+1655A>G mutation in the CEP290 gene) in genes associated with other recessive inherited retinal degenerative diseases or syndromes (eg, Usher syndrome) based on genetic analysis. 2.Presence of (likely) pathogenic mutations in genes associated with dominant or X-linked inherited retinal degenerative diseases or syndromes (eg. autosomal dominant retinitis pigmentosa, X-linked Retinoschisis) based on genetic analysis. 3.Presence of any significant ocular or non-ocular disease/disorder (including lab/medication abnormalities) which, in the opinion of the Investigator and with concurrence of the Medical Monitor, may either put the subject at risk because of participation in the trial, may influence the results of the trial, or the subject’s ability to participate in the trial. This includes but is not limited a subject who: 1) is not an appropriate candidate for antisense oligonucleotide treatment, 2) has concurrent cystoid macular edema (CME) in the treatment eye. 4.History or presence of ocular herpetic diseases (including herpes simplex virus, varicella zoster or cytomegalovirus) in the treatment eye. 5.Presence of any active ocular infection in either eye. 6.Presence of any of the following lens opacities in the treatment eye: cortical opacity ≥ +2, posterior subcapsular opacity ≥ +2, or a nuclear sclerosis ≥ +2, and which: 1) is clinically significant in the opinion of the Investigator, or 2) would adequately prevent clinical and photographic evaluation of the retina. 7.Receipt within 1 month prior to Screening of any intraocular or periocular surgery (including refractive surgery), or an IVT injection or planned intraocular surgery or procedure during the course of the trial. Subjects who received an intraocular or periocular surgery between 1 to 3 months prior Screening, may only be considered for inclusion (at the discretion of the Investigator) if there are no clinically significant complications of surgery present. 8.Current treatment or treatment within the past 12 months with therapies known to influence the immune system (including but not limited to cytostatics, interferons, TNF-binding proteins, drugs acting on immunophilins, or antibodies with known impact on the immune system). Subjects that have been treated with systemic steroids within the past 12 months or that require intermittent use of topical steroids may be considered for inclusion based on Investigator judgement, dependent on the status of the underlying disease. 9.Current treatment or treatment within the past 3 months or planned treatment with drugs known to be toxic to the lens, retina, or the optic nerve including, but not limited to, systemic/intraocular steroids, amiodarone, desferrioxamine/desferoxamine, chloroquine/hydroxychloroquine sulfate (Plaquenil), tamoxifen, ethambutol, phenothiazine derivatives including chlorpromazine, fluphenazine (decanoate), levomepromazine, and thioridazine. 10.A history of glaucoma in the treatment eye or raised intraocular pressure in the treatment eye that is not controlled with medication at the time of Screening. 11.Use of any investigational drug or device within 3 months or 5 half-lives of Day 1, whichever is longer, or plans to participate in another study of a drug or device during the trial period. 12.Any prior receipt of genetic or stem-cell therapy for ocular or non-ocular disease.
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E.5 End points |
E.5.1 | Primary end point(s) |
Primary endpoints are: • Incidence and severity of ocular AEs • Incidence and severity of non-ocular AEs |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
Until 24 months after IVT injection |
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E.5.2 | Secondary end point(s) |
Secondary endpoints are: • Best-corrected visual acuity (BCVA) • Retinal sensitivity measured by Full-field stimulus threshold testing (FST) (white, red, and blue)
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
12 months Change from baseline values for these endpoints will also be assessed at other time points. |
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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 | Yes |
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 |
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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) | Yes |
E.7.3 | Therapeutic confirmatory (Phase III) | Yes |
E.7.4 | Therapeutic use (Phase IV) | No |
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 | No |
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) | No |
E.8.2.2 | Placebo | No |
E.8.2.3 | Other | Yes |
E.8.2.3.1 | Comparator description |
same IMP with different dose |
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E.8.2.4 | Number of treatment arms in the trial | 5 |
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 | 1 |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 6 |
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 |
Brazil |
European Union |
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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E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | 2 |
E.8.9.1 | In the Member State concerned months | 1 |
E.8.9.1 | In the Member State concerned days | 0 |
E.8.9.2 | In all countries concerned by the trial years | 2 |
E.8.9.2 | In all countries concerned by the trial months | 1 |
E.8.9.2 | In all countries concerned by the trial days | 0 |