NCT07236645Not yet recruitingPhase 2
Efficacy and Safety of Ginkgo Biloba Extract EGb761® in Patients With Diabetic Retinopathy
Efficacy and Safety of Ginkgo Biloba Extract EGb761® in Patients With Diabetic Retinopathy: A Single-Center, Open-Label, Parallel-Group Controlled Trial
Source: ClinicalTrials.gov · Last updated 19 Nov 2025
Brief summary (registry, in English)
This study is a single-center, open-label, parallel-controlled trial, scheduled to commence in October 2025 at the outpatient and inpatient departments of Shanghai General Hospital. Eligible patients with diabetes mellitus and/or non-proliferative diabetic retinopathy (NPDR), who meet the inclusion and exclusion criteria, will be recruited. General and disease-related information will be collected. All eligible participants will be required to voluntarily sign an informed consent form after fully understanding and accepting the study. Successfully enrolled subjects will be randomly assigned to the Ginaton group or the conventional treatment group, and will receive the corresponding interventions as specified in the study protocol. Follow-up assessments will include blood pressure, blood glucose, glycated hemoglobin, blood lipids, hemorheological parameters, glomerular filtration rate, microalbuminuria, nerve conduction velocity by electromyography, visual acuity, wide-field fundus photography, quality of life (SF-36 questionnaire), and adverse events. The study aims to evaluate the efficacy and safety of ginkgo biloba extract tablet in preventing the development of diabetic retinopathy in patients with long-standing diabetes, as well as in treating patients with mild to moderate NPDR without concomitant diabetic macular edema (DME).
- Status (registry)
- Not yet recruiting
- Phase (registry)
- Phase 2
- Study type
- Interventional
- Enrollment
- 200 (estimated)
- First submitted
- 8 Oct 2025
- Start date
- 20 Nov 2025
- Primary completion date
- 31 Dec 2028
- Lead sponsor
- Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine
- Diseases
- Diabetic eye disease
- NCT number
- NCT07236645
What you commit to
- Study type: Interventional · Phase 2
- Planned participants: 200
- From 20 Nov 2025 to the primary completion date, 31 Dec 2028
- No sites listed in no country
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Prior treatment
- Patients with a known allergy to any component of the investigational product.
- Patients who received Ginkgo biloba extract treatment within the past 12 months.
- Concurrent participation in any other clinical trial.
Other illness
- Poorly controlled hypertension (defined as ≥180/100 mmHg).
- Patients with comorbid psychiatric or neurological disorders.
- Patients with a history of intraocular treatments, such as panretinal photocoagulation (PRP), and/or anti-vascular endothelial growth factor (VEGF) therapy, and/or ocular surgery.
- Patients with a history of cardiovascular events or conditions requiring long-term anticoagulation therapy, such as deep vein thrombosis, pulmonary embolism, atrial fibrillation, or cardiac valve replacement.
Lab values
- Patients with severe impairment of cardiac, pulmonary, hepatic, or renal function, or coagulation disorders, e.g., alanine aminotransferase (ALT) ≥2 times the upper limit of normal (ULN), aspartate aminotransferase (AST) ≥2 ULN, total bilirubin (BIL) ≥1.5 ULN, or estimated glomerular filtration rate (eGFR) ≤30 mL/min/1.73 m².
Other
- Pregnant or lactating women.
- Patients with coexisting ocular pathologies, such as glaucoma or cataract.
- Any contraindication that, in the investigator's judgment, could limit clinical assessment or treatment.
- Patients deemed by the investigator to be unsuitable for inclusion in this study.
Who the study is looking for
- Aged 18 years or older, regardless of gender;
- Meeting the diagnostic criteria for diabetes mellitus with glycated hemoglobin (HbA1c) ≤13%;
- Having a diabetes duration ≥5 years without diagnosed diabetic retinopathy or, according to the DR staging criteria proposed by the Group of Fundus Diseases, Ophthalmology Society of Chinese Medical Association in 2014, having at least one eye diagnosed with Stage I or II non-proliferative diabetic retinopathy (NPDR) without concomitant diabetic macular edema (DME);
- Voluntarily signing the informed consent form.
Age in the registry: 18 years to - · Sex: All · Does not accept healthy volunteers
This page is information, not medical advice. Discuss any trial with your doctor.