A Phase Ⅱa Study of the Safety, Tolerability and Efficacy of BD111 in Herpes Simplex Virus Type I Stromal Keratitis

NCT ID: NCT06474442

Last Updated: 2025-05-18

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

PHASE2

Total Enrollment

40 participants

Study Classification

INTERVENTIONAL

Study Start Date

2025-04-28

Study Completion Date

2027-03-31

Brief Summary

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This study aims to compare the clinical efficacy and safety of BD111 injection in combination with standard therapy vs. standard therapy in herpes simplex virus type I stromal keratitis (HSK), providing preliminary confirmation of the clinical effectiveness of BD111 in combination with standard therapy.

Detailed Description

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This is a phase Ⅱa, single-blind, single-dose, randomized, positively controlled clinical trial of BD111 in patients with herpes simplex virus type I stromal keratitis (HSK) aged 18 to 70 years. Forty eligible participants will be recruited in the trial. BD111 is investigational new biologics (Injection)--a type of lentiviral-like particle that can simultaneously deliver SpCas9 and gRNA targeting the HSV-1 virus gene, also known as HSV-1-erasing lentiviral particles (HELP). The total follow-up duration was 12 months, the safe endpoints and efficacy endpoints will be used to assess the efficacy, safety and tolerability profiles in patients with HSK.

Conditions

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Herpes Simplex Virus Type I Stromal Keratitis

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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Group 1

BD111 combining triple-drugs therapy Group.

Group Type EXPERIMENTAL

BD111 Injection (investigational new drug)

Intervention Type GENETIC

BD111: intrastromally injection, single-dosing 10E6 TU/eye, specified injection volume is 0.15mL.

Triple-drugs therapy of HSV-1 stromal keratitis

Intervention Type COMBINATION_PRODUCT

Triple-drugs therapy: "Ganciclovir Eye gel+Valacilovir Tablets+Prednisolone Acetate Eye Drops" for 3 weeks.

Group 2

BD111 sham injection combining triple-drugs therapy group.

Group Type ACTIVE_COMPARATOR

Triple-drugs therapy of HSV-1 stromal keratitis

Intervention Type COMBINATION_PRODUCT

Triple-drugs therapy: "Ganciclovir Eye gel+Valacilovir Tablets+Prednisolone Acetate Eye Drops" for 3 weeks.

Interventions

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BD111 Injection (investigational new drug)

BD111: intrastromally injection, single-dosing 10E6 TU/eye, specified injection volume is 0.15mL.

Intervention Type GENETIC

Triple-drugs therapy of HSV-1 stromal keratitis

Triple-drugs therapy: "Ganciclovir Eye gel+Valacilovir Tablets+Prednisolone Acetate Eye Drops" for 3 weeks.

Intervention Type COMBINATION_PRODUCT

Other Intervention Names

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BD111 Lentivirus-like particles, also called HSV-1-erasing lentiviral particles (HELP) Ganciclovir Eye gel+Valacilovir Tablets+Prednisolone Acetate Eye Drops

Eligibility Criteria

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Inclusion Criteria

1. Aged 18 to 70 years old;
2. Clinically diagnosed with herpes simplex virus stromal keratitis;
3. Tear swab HSV-1 nucleic acid test (qPCR method) positive;
4. No use of systemic antiviral drugs or corticosteroids within 48 hours before enrollment;
5. No systemic immune eye diseases;
6. Good eyelid structure and blinking function;
7. Eye structure and function assessment showing potential for visual recovery;
8. No retinal detachment, with generally normal visual function;
9. No history of corneal trauma;
10. Visual acuity in the fellow eye is better than 20/200;
11. Fertile males or females must use highly effective contraceptive methods (such as oral contraceptives, intrauterine devices, abstinence, or barrier contraception combined with spermicides) during the trial and continue contraception for 12 months after administration;
12. Participants voluntarily join the study, sign an informed consent form, have good compliance, and cooperate with follow-up visits.

Exclusion Criteria

1. Active ocular infection caused by other pathogens in the target eye or the fellow eye within 30 days before enrollment, including but not limited to blepharitis, infectious conjunctivitis, keratitis, scleritis, and endophthalmitis;
2. Patients with bilateral viral keratitis
3. Previous corneal transplant surgery in the study eye;
4. A history of adverse reactions or allergies to corticosteroids and sodium fluorescein, allergies to therapeutic or diagnostic protein products, allergies to ≥ two drugs or non-drug factors, or having an ongoing allergic disease;
5. Absence of tear film and blinking function;
6. Severe dry eye disease;
7. Malignant ocular surface tumor;
8. Glaucoma;
9. Patients with systemic autoimmune diseases;
10. Signs of systemic infection before enrollment, including fever and receiving antibiotic treatment (abnormal elevating values in white blood cells, lymphocytes, and neutrophils in routine blood tests);
11. Abnormal major organ function or other uncontrolled clinical problems, mainly including but not limited to the following:

* Severe kidney disease history, serum creatinine ≥ 133μmol/L;
* Liver dysfunction, transaminase level ≥ 80 IU/L;
* Uncontrolled hypertension, systolic blood pressure ≥160 mmHg and/or diastolic blood pressure ≥100 mmHg;
* Uncontrolled diabetes, fasting blood glucose greater than or equal to 8.0 μmol/L;
* Cardiovascular disease history, with arrhythmia, myocardial ischemia, and myocardial infarction (diagnosed by electrocardiogram examination);
* Platelet level ≤ 100×10\^9/μL or ≥ 450×10\^9/μL due to any cause, hemoglobin level lower than 10.0g/dL (male) or 9.0g/dL (female).
12. HIV infection;
13. Pregnant and lactating women (pregnancy in this trial is defined as a positive urine pregnancy test);
14. Participation in other drug or medical device clinical trials;
15. Alcohol or drug abuse;
16. Lack of compliance with the trial or the ability to sign an informed consent form;
17. Other situations deemed unsuitable for participation in the trial by the investigator.
Minimum Eligible Age

18 Years

Maximum Eligible Age

70 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Shanghai BDgene Co., Ltd.

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Fujun Li, M.D.

Role: STUDY_DIRECTOR

Shanghai BDgene Co., Ltd.

Locations

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Eye Hospital of Wenzhou Medical University

Wenzhou, Zhejiang, China

Site Status RECRUITING

Countries

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China

Central Contacts

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Chen Wei, M.D.

Role: CONTACT

+86-13757728118

Ma Huixiang, M.D.

Role: CONTACT

+86-13777770073

Facility Contacts

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Chen Wei, M.D.

Role: primary

+86-13757728118

Ma Huixiang, M.D.

Role: backup

+86-13777770073

Other Identifiers

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BD-HSK-111002-Ⅱa

Identifier Type: -

Identifier Source: org_study_id

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