HORNBILL: A Study to Test Different Doses of BI 764524 in Patients Who Have Had Laser Treatment for a Type of Diabetic Eye Disease Called Diabetic Retinopathy With Diabetic Macular Ischemia

Completed · Phase 1/Phase 2 · Has a placebo group

Conditions studied: Diabetic Retinopathy

In brief

This is a study in people with a type of diabetic eye disease called diabetic retinopathy with diabetic macular ischemia. People who have had laser treatment for their diabetic retinopathy can participate in the study. The laser treatment is called panretinal photocoagulation. The purpose of the study is to find out how well different doses of a medicine called BI 764524 are tolerated. BI 764524 is injected into the eye. The study has 2 parts. In the first part, participants get different doses of BI 764524 only once. Participants are in the first part for about 5 months and visit the study site about 8 times. In the second part, participants are put into different groups by chance. Some participants get BI 764524 injections every 4 weeks. Other participants get sham injections every 4 weeks. A sham injection means that it is not a real injection and contains no medicine. Participants cannot tell whether they get the real injection or a sham injection. For the second part, participants are in the study for about 7 months. During this time, they visit the study site about 7 times. In this study, BI 764524 is given to humans for the first time. The doctors compare how well people tolerate the BI 764524 injections and the sham injections. The doctors also regularly check the general health of the participants.

Key facts

Study ID: NCT04424290
Run by: Boehringer Ingelheim
People needed: 45
Starts: 2020-06-12
Expected to finish: 2023-04-28
Last updated by the study team: 2024-05-22

Who can join

Age: 18 and older. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

Single rising dose (SRD) and multiple dosing (MD) part:
Pan-retinal photo coagulation treated proliferative diabetic retinopathy (PDR) participants with either no or inactive retinal neovascularization per investigator judgement in the study eye
Male or female participants of age ≥ 18 years
HbA1c of ≤ 12.0%
Women of childbearing potential (WOCBP) and men able to father a child must be ready and able to use two methods of contraception with at least one of them being a highly effective methods of birth control per ICH M3 (R2) that result in a low failure rate of less than 1% per year when used consistently and correctly. A list of contraception methods meeting these criteria is provided in the patient information and in the clinical trial protocol.
-A woman is considered of childbearing potential (WOCBP), i.e. fertile, following menarche and until becoming postmenopausal unless permanently sterile. Permanent sterilisation methods include hysterectomy, bilateral salpingectomy and bilateral oophorectomy. Tubal ligation is NOT a method of permanent sterilisation. A postmenopausal state is defined as no menses for 2 years without an alternative medical cause. A high follicle stimulating hormone (FSH) level in the postmenopausal range may be used to confirm a post-menopausal state in women not using hormonal contraception or hormonal replacement therapy. However in the absence of 2 years of menorrhea, a single FSH measurement is sufficient.
Signed and dated written informed consent in accordance with ICH Harmonized Guideline for Good Clinical Practice (ICH GCP) and local legislation prior to admission to the trial
SRD part only:
Evidence of diabetic macular ischemia (DMI) per investigator´s judgement, defined as any degree of disruption of retinal vascularity in superficial and/or deep retinal plexus in OCTA
Best-corrected Visual activity (VA) in the non-study eye better than best-corrected VA in the study-eye, if both eyes are eligible and have identical VA the investigator may select the study eye.
Best-corrected VA ≤55 letters (20/80) or worse
MD part only:
Presence of significant DMI: large foveal avascular zone defined as those with ≥0.5mm2 area in superficial vascular complex (SVC) present on optical coherence tomography angiography. If FAZ is <0.5mm2 then enlarged peri-foveal inter-capillary space in at least 1 quadrant will be sufficient.
If both eyes are eligible, the investigator may select either eye to be the study eye.
Best-corrected VA ≤ 85 letters (20/20) or worse

You may not qualify if…

SRD part only:
Participants receiving intravitreal (IVT) injections for active diabetic macular edema (DME, injections: anti-vascular endothelial growth factor (VEGF), steroids) and macular laser in the study eye in the previous 3 months prior to enrolment
Participants receiving anti-VEGF IVT injections for active PDR in the study eye in the previous 3 months prior to enrolment
Current or planned use of medications known to be toxic to the retina, lens or optic nerve (e.g. desferoximine, chloroquine/hydrochloroquine, chlorpromazine, phenothiazines, tamoxifen, nicotinic acid, and ethambutol)
Additional eye disease in the study eye that could compromise best corrected VA (BCVA) with visual field loss, uncontrolled glaucoma (IOP>24), age related macular degeneration, history of ischemic optic neuropathy or retinal vascular occlusion, symptomatic vitreomacular traction, or genetic disorders such as retinitis pigmentosa; history of high myopia > 8 diopters in the study eye. Anterior segment and vitreous abnormalities in the study eye that would preclude adequate observation with SD-OCT
Any intraocular surgery in the study eye within 3 months prior to screening
Aphakia or total absence of the posterior capsule. Yttrium aluminium garnet (YAG) laser capsulotomy in the study eye if performed less than 3 months prior to enrolment
Participants not expected to comply with the protocol requirements or not expected to complete the trial as scheduled (e.g. chronic alcohol or drug abuse or any other condition that, in the investigator´s opinion, makes the patient an unreliable trial participant)
Previous participation in this trial or in other trials with IVT injections administered within 3 months.
Further exclusion criteria apply.
MD part only:
DME, defined as a central subfield thickness (CST) ≥305 micrometer (μm) for men and ≥290 μm women measured with optovue (Optical coherent tomography) OCT in the study eye
Participants receiving IVT injections for active DME (anti-VEGF, steroids) and macular laser in the study eye in the previous 3 months prior to enrolment
Participants receiving anti-VEGF IVT injections for active PDR in the study eye in the previous 3 months prior to enrolment
Heavily lasered macula in the study eye per investigator's judgement
History of vitrectomy in the study eye
Epiretinal membrane with extended foveal contour distortion in the study eye per investigator's judgement
Current or planned use of medications known to be toxic to the retina, lens or optic nerve (e.g. desferoximine, chloroquine/hydrochloroquine, chlorpromazine, phenothiazines, tamoxifen, nicotinic acid, and ethambutol) Further exclusion criteria apply.

Where it is running

Trinity Research — Dothan, Alabama, United States
Retina-Vitreous Associates Medical Group — Beverly Hills, California, United States
Stanford University Medical Center — Palo Alto, California, United States
Florida Retina Institute — Orlando, Florida, United States
Raj K. Maturi, MD PC — Carmel, Indiana, United States
Joslin Diabetes Center — Boston, Massachusetts, United States
Long Island Vitreoretinal Consultants — Great Neck, New York, United States
New York Eye and Ear Infirmary of Mount Sinai — New York, New York, United States
Cleveland Clinic — Cleveland, Ohio, United States
Austin Research Center for Retina, PLLC — Austin, Texas, United States
Retina Consultants of Texas — Bellaire, Texas, United States
Valley Retina Institute, PA — McAllen, Texas, United States
Retina Consultants of Texas — The Woodlands, Texas, United States
Bradford Royal Infirmary — Bradford, United Kingdom
Bristol Eye Hospital — Bristol, United Kingdom
Southend University Hospital — Essex, United Kingdom
Gloucestershire Royal Hospital — Gloucester, United Kingdom
Moorfields Eye Hospital — London, United Kingdom
Sunderland Eye Infirmary — Sunderland, United Kingdom

Full record on ClinicalTrials.gov

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