A Study to Evaluate Efficacy of DDX-01 which Supports Screening for Diabetic Retinopathy and Diabetic Macular Edema

A Multicenter Study to Evaluate Safety and Efficacy and Usefulness of DDX-01 which Supports Screening for Diabetic Retinopathy and Diabetic Macular Edema in Internal Medicine for Japanese Patients with Diabetes Mellitus

Status

Active, not recruiting

Phases

Phase 3

Study type

Interventional

Source

JPRN

Registry ID

JPRN-jRCT2032220358

Enrollment

275

Registered

2022-10-04

Start date

2022-11-01

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Diabetis

Interventions

The AI diagnostic device "DDX-01" analyses retinal images of diabetic subjects taken with a non-mydriatic retinal camera and conducts screening tests for diabetic retinopathy and diabetic macular edem

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1. Japanese ancestry who understands the study and volunteer to sign the informed consent 2. Age 18 or older 3. Documented diagnosis of diabetes mellitus, per any of the following: a. Having met the criteria established by either the World Health Organization (WHO) or the American Diabetes Association (ADA) b. Hemoglobin A1c (HbA1c) greater than or equal to 6.5% c. Fasting Plasma Glucose (FPG) greater than or equal to 126 mg/dL (7.0 mmol/L) d. Oral Glucose Tolerance Test (OGTT) with two-hour plasma glucose (2-hr PG) greater than or equal to 200 mg/dL (11.1 mmol/L), using the equivalent of an oral 75 g anhydrous glucose dose dissolved in water e. Symptoms of hyperglycemia or hyperglycemic crisis with a random plasma glucose (RPG) greater than or equal to 200 mg/dL (11.1 mmol/L)

Exclusion criteria

Exclusion criteria: 1. Persistent vision loss, blurred vision, or floaters. 2. Diagnosed with macular edema, severe non-proliferative retinopathy, proliferative retinopathy, radiation retinopathy, or retinal vein occlusion. 3. History of laser treatment of the retina or injections into either eye, or any history of retinal surgery. 4. Subject is contraindicated for imaging by fundus imaging systems used in the study due to any of the following: a. Subject is hypersensitive to light b. Subject recently underwent photodynamic therapy (PDT) c. Subject is taking medication that causes photosensitivity 5. Currently participating in another investigational eye study and actively receiving investigational product for Diabetic retinopathy or Diabetic macular edema. 6. Subject has a condition that, in the opinion of the Investigator, would preclude participation in the study (e.g., unstable medical status including blood pressure or glycemic control, microphthalmia or previous enucleation).

Design outcomes

Primary

Measure	Time frame
Sensitivity and specificity of DDX-01 in Japanese ancestry subjects	—

Secondary

Measure	Time frame
1) Overall sensitivity and specificity of DDX-01 in Japanese and US subjects 2) Absence of effect of Japanese ancestry on sensitivity and specificity as compared to non-Japanese ancestry 3) Sensitivity and specificity of Japanese ophthalmologists in Japanese subjects 4) Sensitivity and specificity of DDX-01 outputs using a clinical reference standard of diagnoses made by Japanese ophthalmologists in Japanese subjects 5) PPV, NPV, PLR, NLR in Japanese subjects 6) Difference between the proportion of Japanese subjects in the "DDX-01 arm" and those in the "standard referral arm" who receive a Diabetic retinopathy examination 7) Patient and clinician satisfaction and behavior measured by the Likert scale in Japanese subjects	—

Measure

Time frame

1) Overall sensitivity and specificity of DDX-01 in Japanese and US subjects 2) Absence of effect of Japanese ancestry on sensitivity and specificity as compared to non-Japanese ancestry 3) Sensitivity and specificity of Japanese ophthalmologists in Japanese subjects 4) Sensitivity and specificity of DDX-01 outputs using a clinical reference standard of diagnoses made by Japanese ophthalmologists in Japanese subjects 5) PPV, NPV, PLR, NLR in Japanese subjects 6) Difference between the proportion of Japanese subjects in the "DDX-01 arm" and those in the "standard referral arm" who receive a Diabetic retinopathy examination 7) Patient and clinician satisfaction and behavior measured by the Likert scale in Japanese subjects

—

Contacts

Public ContactKoji Tomita

MEDISCIENCE PLANNING INC.

dxs01@mpi-cro.jp+81-3-5544-8902

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026