E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Autosomal Recessive Stargardt Disease |
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E.1.1.1 | Medical condition in easily understood language |
Autosomal Recessive Stargardt Disease |
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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 | 20.1 |
E.1.2 | Level | PT |
E.1.2 | Classification code | 10062766 |
E.1.2 | Term | Stargardt's disease |
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 objectives of this study are to evaluate the safety and efficacy of Zimura™ intravitreal injection compared to Sham in subjects with autosomal recessive Stargardt disease 1 (STGD1). |
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E.2.2 | Secondary objectives of the trial |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
Ophthalmic Inclusion Criteria The following inclusion criteria apply to the study eye: - At least two pathogenic mutations of ABCA4 gene confirmed by a CLIA-certified laboratory. - Best corrected visual acuity in the study eye between 20/20 - 20/200 Snellen equivalent, inclusive. - Presence of at least one identifiable location of at least 250 micrometers contiguous width of ellipsoid zone loss on SD-OCT within the total 9 ETDRS subfields. - The total area of thinned layer(s) on OCT not extending beyond the outer ring of the total 9 ETDRS subfields (e.g. not extending beyond fields 5-9). - Fundus autofluorescence may show heterogeneous signals (areas of increased and/or decreased autofluorescence) but no area of subfoveal definitely decreased autofluorescence (DDAF). - Clear ocular media and adequate pupillary dilatation in both eyes (OU) to allow for all imaging procedures, including good quality stereoscopic fundus photography, fundus autofluorescence, and spectral domain ocular coherence tomography. - Intraocular pressure of 21 mmHg or less in the study eye.
General Inclusion Criteria - Subjects of either gender aged between 18 and 50 years, inclusive. - Women of childbearing potential is defined as follows: • Woman who has had surgical sterilization (hysterectomy, bilateral oophorectomy, or bilateral salpingectomy) • Woman ≥ 60 years of age • Woman ≥ 40 and < 60 years of age who fulfills at least one of the following * A cessation of menses for at least 12 months and a follicle-stimulating hormone (FSH) test confirming non-childbearing potential (refer to laboratory reference ranges for confirmatory levels) * A cessation of menses for at least 24 months without FSH levels confirmed For subjects who are women of childbearing potential involved in any sexual intercourse that could lead to her pregnancy, the subject has used a protocol approved highly effective contraceptive method during the trial and agrees to continue the same method until at least 90 days following the last dose of test medication. Protocol approved highly effective contraceptive methods are hormonal contraceptives (i.e., combined oral contraceptive, patch, vaginal ring, injectable, or implant), intrauterine devices or intrauterine systems, abstinence as defined by refraining from heterosexual intercourse during the entire period of the study and until at least 90 days following the last dose of study medication, vasectomy, and tubal ligation. If subject is a woman of childbearing potential, she must have a negative serum pregnancy test within 14 days prior to the first injection and have no plans to donate ova during the duration of the trial and at least 90 days following the last dose of test medication. If subject is a male, the subject should use condom and not donate sperm during the time of study drug exposure and for 90 days following last exposure of study drug. - Provide written informed consent. - Ability to return for all trial visits. |
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E.4 | Principal exclusion criteria |
Subjects will not be eligible for the trial if subjects cannot attend all of the trial required visits, or if any of the following criteria are present in the study eye or systematically:
Ophthalmic Exclusion Criteria - Macular atrophy secondary to any condition other than STGD1 in either eye (e.g., drug-induced). - Any prior treatment for STGD1 including gene therapy, stem cell therapy or any prior intravitreal treatment for any indication in either eye. - Participation in an interventional study of a vitamin A derivative ≤ 3 months prior to screening. - Any ocular condition in the study eye that would progress during the course of the study that could affect central vision, microperimetry testing or otherwise be a confounding factor. - Concomitant treatment with any ocular or systemic medication that is known to be toxic to the lens, retina or optic nerve. - Presence of intraocular inflammation (≥ trace cell or flare), macular hole, pathologic myopia (spherical equivalent of -8 diopters or more negative, or axial length of 25mm or more), epiretinal membrane, evidence of significant vitreo-macular traction, vitreous hemorrhage or aphakia (pseudophakia with or without an intact capsule is not an exclusion criteria). - Presence or history of idiopathic or autoimmune-associated uveitis in either eye. - Significant media opacities, including cataract, which might interfere with visual acuity, assessment of toxicity, fundus photography or fundus autofluorescence. Subjects should not be entered if there is likelihood that they will require cataract surgery in the study eye during the study. - Any intraocular surgery or thermal laser within 3 months of trial entry. Any prior thermal laser in the macular region, regardless of indication. - Any ocular or periocular infection or ocular surface inflammation in the past 12 weeks. - History of any of the following procedures: Posterior vitrectomy, filtering surgery (e.g. trabeculectomy), glaucoma drainage device, corneal transplant or retinal detachment.
General Exclusion Criteria - Any of the following underlying diseases including: • Diabetes mellitus (regardless of HbA1c level) • HbA1c value of ≥6.5%*: • If the HbA1c value is ≥ 6.5% and ≤ 6.9%, and the patient has no signs or symptoms of diabetes mellitus, has a normal creatinine, has no diabetic retinopathy and no glycosuria, then the patient may have an oral glucose tolerance test (OGTT) at the discretion of the investigator. If the 2-hour glucose value on OGTT is <200 mg/dL (<11.1mmol/L), then the patient may be enrolled. • History of other disease, metabolic dysfunction, physical examination finding or clinical laboratory finding giving reasonable suspicion of a disease or condition that contraindicates the use of an investigational drug or that might affect interpretation of the results of the study or render the subject at high risk for treatment complications. • History or evidence of severe cardiac disease (eg, New York Heart Association (NYHA) Functional Class III or IV - see Appendix 17.5), history or clinical evidence of unstable angina, acute coronary syndrome, myocardial infarction or revascularization within last 6 months, ventricular tachyarrhythmia requiring ongoing treatment. • Subjects with a clinically significant laboratory value. Laboratory tests may be repeated once before randomization. • Stroke within 12 months of trial entry. • Any major surgical procedure within one month of trial entry or anticipated during the trial which may interrupt trial participation. - Previous therapeutic radiation in the region of the study eye. - Any treatment with an investigational agent in the past 60 days for any condition. - Women who are pregnant or nursing. - Known serious allergies to the fluorescein dye used in angiography, povidone iodine, or to the components of the Zimura™ formulation. - History of systemic treatment with any complement inhibitor agent in the past or the likelihood of treatment with any systemic complement inhibitor agent during the study. |
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E.5 End points |
E.5.1 | Primary end point(s) |
Primary Efficacy Endpoint • Mean rate of change in the area of ellipsoid zone defect measured by en face SD-OCT over 18 months.
Safety Endpoints: • Adverse events, vital signs, ophthalmic variables [ophthalmic examination, intraocular pressure (IOP), fluorescein angiogram (FA), fundus autofluorescence (FAF), spectral domain-optical coherence tomography (SD-OCT), microperimetry], electrocardiogram (ECG), and laboratory variables. |
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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) |
Secondary and Supportive Endpoints • Mean rate of change in the horizontal width of undetectable ellipsoid zone measured by a horizontal scan through the foveal center with SD-OCT over 18 months. • Mean rate of change in the area of atrophic lesion (definite decrease in autofluorescence, DDAF) over 18 months measured by fundus autofluorescence (FAF). • Mean change in photopic and/or mesopic macular sensitivity measured by microperimetry from Baseline to Month 18. • Mean rate of change in the thickness of the outer nuclear layer measured by a horizontal scan through the foveal center at the position of maximum width of ellipsoid zone loss at Baseline over 18 months measured by SD-OCT. • Mean change in best corrected visual acuity (Early Treatment Diabetic Retinopathy Study [ETDRS] letters) from Baseline to Month 18. • Emergence of at least one new atrophic lesion (DDAF) over 18 months measured by FAF at Month 18. |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
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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 | No |
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) | No |
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 | No |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | Yes |
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) | No |
E.8.2.2 | Placebo | No |
E.8.2.3 | Other | Yes |
E.8.2.3.1 | Comparator description |
Zimura and sham administered by an unmasked investigator |
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E.8.2.4 | Number of treatment arms in the trial | 2 |
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 | 2 |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 19 |
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 |
Canada |
France |
Germany |
Hungary |
Israel |
Italy |
Spain |
United Kingdom |
United States |
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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 | 1 |
E.8.9.1 | In the Member State concerned months | 6 |
E.8.9.1 | In the Member State concerned days | 2 |
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 | 6 |
E.8.9.2 | In all countries concerned by the trial days | 27 |