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NCT Number: NCT07776522

Phase II Study of Subretinal JWK001 for Neovascular Age-Related Macular Degeneration

This is a Phase II, randomized, open-label, active-controlled study designed to evaluate the preliminary efficacy and safety of a single subretinal administration of JWK001 at different dose levels in patients with neovascular age-related macular degeneration.

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Key information

Age range

50 year–85 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 2

Primary location

Beijing Hospital, Beijing, Beijing Municipality, China

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Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Written informed consent and ability to comply with the study protocol.
  • Male or female, aged 50-85 years.
  • Active subfoveal MNV secondary to nAMD requiring anti-VEGF treatment.
  • Demonstrated clinical response to aflibercept treatments in the study eye confirmed by the Reading Center;
  • Study-eye BCVA of 19-78 ETDRS letters.
  • Pseudophakic study eye.

Exclusion criteria

  • Any ocular condition other than nAMD that may affect vision, study assessments, treatment safety, or interpretation of results.
  • Intraocular surgery or intraocular corticosteroid treatment within 4 weeks at screening.
  • Any ocular condition making the study eye unsuitable for subretinal injection.
  • Active ocular infection or inflammation, or a history of idiopathic or autoimmune uveitis.
  • Monocular status or non-study-eye BCVA <19 ETDRS letters.
  • Clinically significant systemic disease or infection, malignancy, prohibited concomitant treatment, prior gene therapy, or recent participation in another clinical trial.
  • Any other condition considered by the investigator to make the subject unsuitable for participation.

Treatment and study plan

JWK001

Drug

JWK001 will be administered as a single subretinal injection in one study eye.

Aflibercept (2.0 mg)

Drug

Aflibercept 2 mg will be administered by intravitreal injection at Weeks 2, 10, 18, 26, 34, 42, and 50 after randomization, for a total of seven injections.

Primary outcomes

  1. Change from baseline in best-corrected visual acuity (BCVA)

    Time frame: Week 34

    BCVA measured via the Early Treatment Diabetic Retinopathy Study (ETDRS) letter score

Secondary outcomes

  1. Change from baseline in BCVA

    Time frame: Week 50 and Year 5

    BCVA measured via the ETDRS letter score

  2. Change from baseline in central retinal thickness (CRT)

    Time frame: Week 34, Week 50 and Year 5

  3. Change from baseline in the area of Macular Neovascularization (MNV)

    Time frame: Week 34 and Week 50

    MNV measured via Fluorescein Angiography (FFA)

  4. Change from baseline in leakage area

    Time frame: Week 34 and Week 50

    Leakage area assessed by FFA

  5. Annualized mean number of rescue treatments

    Time frame: Week 34, Week 50 and Year 5

  6. Change from baseline in the 25-item National Eye Institute Visual Function Questionnaire (NEI-VFQ-25) score

    Time frame: Week 34 and Week 50

    NEI VFQ-25 composite score ranges from 0 to 100. Higher scores indicate better vision-related functioning and quality of life. A positive change from baseline indicates improvement, whereas a negative change indicates worsening.

  7. Frequencies and severities of all safety events

    Time frame: Week 34 and Year 5

Other outcomes

  1. Neutralizing Antibodies (NAbs) Titer Against the Adeno-Associated Virus Serotype 8(AAV8) Capsid

    Time frame: Week 50

    NAbs titer against the AAV8 capsid protein will be assessed in blood samples. Higher titers indicate a stronger neutralizing antibody response.

  2. Anti-Drug Antibody (ADA) Titer Against the nVEGF1 Protein

    Time frame: Week 50

    ADA titers against the nVEGF1 protein expressed by JWK001 will be measured in blood samples. Higher titers indicate a stronger anti-drug antibody response.

  3. T-Cell Immune Response Against the AAV8 Capsid Protein

    Time frame: Week 50

    T-cell immune responses against the AAV8 capsid protein will be assessed using an enzyme-linked immunospot (ELISpot) assay.

  4. T-Cell Immune Response Against the nVEGF1 Protein

    Time frame: Week 50

    T-cell immune responses against the nVEGF1 protein will be assessed using an enzyme-linked immunospot (ELISpot) assay.

  5. JWK001 Vector DNA Level in Blood

    Time frame: Week 4

    JWK001 vector DNA will be measured in blood samples.

  6. JWK001 Vector DNA Level in Tears

    Time frame: Week 4

    JWK001 vector DNA will be measured in tear samples

  7. JWK001 Vector DNA Level in Urine

    Time frame: Week 4

    JWK001 vector DNA will be measured in urine samples

  8. JWK001 Vector DNA Level in Feces

    Time frame: Week 4

    JWK001 vector DNA will be measured in fecal samples

  9. Concentration of the nVEGFi Transgene Expression Product in Blood

    Time frame: Week 50

    The concentration of the nVEGFi transgene expression product will be measured in blood samples

  10. Concentration of the nVEGFi Transgene Expression Product in Aqueous Humor

    Time frame: Week 104

    The concentration of the nVEGFi transgene expression product will be measured in aqueous humor samples

Study contacts

Contact information is provided by the study sponsor or research team.

Sponsors and collaborators

Lead sponsor

West China Hospital

Other

Registry information

Official study title

A Phase II Study to Evaluate the Safety and Preliminary Efficacy of Subretinal Administration of JWK001 in Patients With Neovascular Age-Related Macular Degeneration (nAMD)

Important dates

Study start
2026
Primary completion
2027
Study completion
2032
First posted
Aug 20, 2026
Registry last updated
Aug 20, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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