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CompletedNCT04278417CONDORUpdated Oct 16, 2025Results posted

Study of Efficacy and Safety of Brolucizumab Versus Panretinal Photocoagulation Laser in Patients With Proliferative Diabetic Retinopathy

A Phase 3 interventional study of Brolucizumab 6 mg and Panretinal photocoagulation laser in Proliferative Diabetic Retinopathy, sponsored by Novartis Pharmaceuticals. Completed at 120 sites in 16 countries. Open to participants aged 18 Years to 100 Years. Per ClinicalTrials.gov, last updated 2025-10-16.

Sponsored by Novartis Pharmaceuticals · Phase 3, Interventional, and Treatment

Phase
Phase 3
Study type
Interventional
Enrollment
689
Allocation
Randomized
Ages
18 Years to 100 Years
Sex
All
01

Study summary

The purpose of this study was to evaluate the efficacy and safety of brolucizumab compared to panretinal photocoagulation laser (PRP) in patients with proliferative diabetic retinopathy (PDR). This evaluation will provide information that brolucizumab is non-inferior to PRP with respect to the change in best corrected visual acuity at Week 54.

Read the detailed description

Phase III, 96-week, two-arm, randomized (1:1 ratio), single-masked, multi-center, active-controlled study to evaluate the efficacy and safety of brolucizumab compared to Panretinal photocoagulation (PRP) in subjects with Proliferative diabetic retinopathy (PDR).

Subjects who consented underwent screening assessments to evaluate their eligibility based on the inclusion and exclusion criteria. Subjects who met all the inclusion and none of the exclusion criteria were randomized in a 1:1 ratio to one of the following treatments:

Brolucizumab 6 mg: 3 x q6w loading then q12w maintenance through Week 90, with the option from Week 48 onwards to extend the treatment interval by 6 weeks at a time up to 24 weeks, and revert to q12w if disease worsens. More frequent injection with q6w interval in the maintenance phase could be administered at the discretion of the Investigator if the disease worsens.

PRP: initial treatment in 1-4 sessions up to Week 12, followed with additional PRP treatment (may split into 2-4 sessions) as needed up to Week 90.

Visits occurred every 6 weeks throughout the study, regardless of treatment or not.

02

Conditions studied

  • Proliferative Diabetic Retinopathy

Keywords

  • proliferative diabetic retinophathy, retinal neovascularization, anti-VEGF, brolucizumab, intravitreal injection, panretinal photocoagulation
03

In context

Retinal Neovascularization

23 studies on the registry are indexed under Retinal Neovascularization; 2 are open to participants now.

This study's enrollment of 689 is above the median of 40 across 14 interventional studies indexed under Retinal Neovascularization.

Browse Retinal Neovascularization studies →

Lead sponsor

Novartis Pharmaceuticals is the lead sponsor of 2,673 studies on the registry; 228 are open to participants now.

Of its 576 completed or terminated interventional studies of FDA-regulated products, 431 (75%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 100 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Signed informed consent must be obtained prior to participation
  • Able to complete adequate fundus photographs and retinal images
  • Diagnosis of type 1 or 2 Diabetes Mellitus (DM) and HbA1c less than or equal to 12% at screening
  • DM treatment stable for at least 3 months
  • PDR diagnosis with no previous PRP treatment in the study eye

Exclusion criteria

Exclusion Criteria:

  • Concomitant conditions or ocular disorders in the study eye at Screening or Baseline that could compromise a response to study treatment.
  • Presence of diabetic macular edema in the study eye
  • Active infection or inflammation in the study eye
  • Uncontrolled glaucoma (IOP greater than 25 mmHg)
  • Intravitreal anti-VEGF treatment within 6 months
  • Treatment with intraocular corticosteroids
  • End stage renal disease requiring dialysis or kidney transplant
  • Uncontrolled blood pressure
  • Systemic anti-VEGF therapy at any time

Other protocol-defined inclusion/exclusion criteria may apply.

05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Outcomes assessor)
Enrollment
689 participants (actual)

Study arms

  • Experimental
    Brolucizumab 6 mg

    Intra-vitreal injection. 3 x q6w loading injections, followed by q12w maintenance through Week 90

    Biological: Brolucizumab 6 mg

  • Active comparator
    Panretinal photocoagulation laser Arm

    Initial treatment in 1-4 sessions up to Week 12, followed with additional PRP treatment as needed

    Procedure: Panretinal photocoagulation laser

Interventions

  • BiologicalBrolucizumab 6 mg

    3 x q6w loading injections, followed by q12w maintenance through Week 90

    Also known as: RTH258

  • ProcedurePanretinal photocoagulation laser

    initial treatment in 1-4 sessions up to Week 12, followed with additional PRP treatment as needed

    Also known as: PRP

06

What researchers measure

Primary outcomes

  1. Change From Baseline in Best-corrected Visual Acuity (BCVA) at Week 54 for the Study Eye

    BCVA was assessed using Early Treatment Diabetic Retinopathy Study (ETDRS) visual acuity testing charts. Visual function of the study eye was assessed using the ETDRS protocol. Participants with a BCVA ETDRS letter score of \>= 34 ETDRS letters (Snellen equivalent 20/200) at Screening / Baseline in the study eye were included. Min and max possible scores are 0-100 respectively. A higher score represents better functioning. Last observation carried forward (LOCF) was used for the imputation of missing values.

    Time frame: Baseline, Week 54

Secondary outcomes

  1. Number and Percentage of Subjects With no Proliferative Diabetic Retinopathy (PDR) at Week 54 for the Study Eye

    Proliferative diabetic retinopathy (PDR) is derived from the diabetic retinopathy severity scale (DRSS) as assessed by the central reading center (CRC) using 7-field color fundus photography image. The DRSS on the original score with scores varying from 10 (DR absent) to 85 (very advanced PDR) were then converted into a 12-level scale (Range is from 1 - diabetic retinopathy (DR) absent, to 12- very advanced PDR). (A lower score represents a better outcome.) The event of "No PDR" is then defined as DRSS (12-level scale) \< 7.

    Time frame: Week 54

  2. Number and Percentage of Subjects With no Proliferative Diabetic Retinopathy (PDR) at Week 96 for the Study Eye

    Proliferative diabetic retinopathy (PDR) is derived from the diabetic retinopathy severity scale (DRSS) as assessed by the central reading center (CRC) using 7-field color fundus photography image. The DRSS on the original score with scores varying from 10 (DR absent) to 85 (very advanced PDR) were then converted into a 12-level scale (Range is from 1 - diabetic retinopathy (DR) absent, to 12- very advanced PDR). (A lower score represents a better outcome.) The event of "No PDR" is then defined as DRSS (12-level scale) \< 7.

    Time frame: Week 96

  3. Number and Percentage of Subjects With Center-involved Diabetic Macular Edema (CI- DME) up to Week 54 for the Study Eye

    Assessed by Spectral domain optical coherence tomography (SD-OCT) from the central reading center. PRP = Panretinal photocoagulation laser

    Time frame: Up to Week 54

  4. Number and Percentage of Subjects With Center-involved Diabetic Macular Edema (CI- DME) up to Week 96 for the Study Eye

    Assessed by Spectral domain optical coherence tomography (SD-OCT) from the central reading center. PRP = Panretinal photocoagulation laser

    Time frame: Up to Week 96

  5. Area Under the Curve in Change From Baseline in BCVA up to Week 54 and up to Week 96 - for the Study Eye

    BCVA was assessed using Early Treatment Diabetic Retinopathy Study (ETDRS) visual acuity testing charts. Visual function of the study eye was assessed using the ETDRS protocol. Participants with a BCVA ETDRS letter score of \>= 34 ETDRS letters (Snellen equivalent 20/200) at Screening / Baseline in the study eye were included. Min and max possible scores are 0-100 respectively. A higher score represents better functioning. Last observation carried forward (LOCF) was used for the imputation of missing values. The AUC in change from Baseline in BCVA up to Week 54 (or Week 96) is referred to as the averaged change from Baseline in BCVA at each visit up to 54 (or Week 96), which was calculated as (BCVA at Week 6 + BCVA at Week 12 + ... + BCVA at Week 54 (or Week 96)) / number of visits with valid BCVA data from Week 6 to Week 54 (or Week 96) - BCVA at Baseline.

    Time frame: Baseline, up to Week 54 and up to Week 96

  6. Diabetic Retinopathy Severity Scale (DRSS): Number and Percentage of Subjects With ≥2 Steps Improvement From Baseline in Early Treatment Diabetic Retinopathy Study (ETDRS) DRSS Score at Week 54 and Week 96

    Severity of Diabetic retinopathy was evaluated using the ETDRS DRSS score assessed by the Central Reading Center based on color fundus photography images in the study eye. When the ETDRS-DR severities were evaluable, they were categorized on the original scale with scores varying from 10 (DR absent) to 85 (very advanced PDR). All DRSS values were then converted into a 12-level scale, allowing the derivation of the ≥2-step and ≥3-step change from baseline for each post-baseline assessment". A lower score represents better functioning.

    Time frame: Baseline, Week 54 and Week 96

  7. Diabetic Retinopathy Severity Scale (DRSS): Number and Percentage of Subjects With ≥2 Steps Worsening From Baseline in Early Treatment Diabetic Retinopathy Study (ETDRS) DRSS Score at Week 54 and Week 96

    Severity of Diabetic retinopathy was evaluated using the ETDRS DRSS score assessed by the Central Reading Center based on color fundus photography images in the study eye. When the ETDRS-DR severities were evaluable, they were categorized on the original scale with scores varying from 10 (DR absent) to 85 (very advanced PDR). All DRSS values were then converted into a 12-level scale, allowing the derivation of the ≥2-step and ≥3-step change from baseline for each post-baseline assessment". A lower score represents better functioning.

    Time frame: Baseline, Week 54 and Week 96

  8. Diabetic Retinopathy Severity Scale (DRSS): Number and Percentage of Subjects With ≥3 Steps Improvement From Baseline in Early Treatment Diabetic Retinopathy Study (ETDRS) DRSS Score at Week 54 and Week 96

    Severity of Diabetic retinopathy was evaluated using the ETDRS DRSS score assessed by the Central Reading Center based on color fundus photography images in the study eye. When the ETDRS-DR severities were evaluable, they were categorized on the original scale with scores varying from 10 (DR absent) to 85 (very advanced PDR). All DRSS values were then converted into a 12-level scale, allowing the derivation of the ≥2-step and ≥3-step change from baseline for each post-baseline assessment". A lower score represents better functioning.

    Time frame: Baseline, Week 54 and Week 96

  9. Diabetic Retinopathy Severity Scale (DRSS): Number and Percentage of Subjects With ≥3 Steps Worsening From Baseline in Early Treatment Diabetic Retinopathy Study (ETDRS) DRSS Score at Week 54 and Week 96

    Severity of Diabetic retinopathy was evaluated using the ETDRS DRSS score assessed by the Central Reading Center based on color fundus photography images in the study eye. When the ETDRS-DR severities were evaluable, they were categorized on the original scale with scores varying from 10 (DR absent) to 85 (very advanced PDR). All DRSS values were then converted into a 12-level scale, allowing the derivation of the ≥2-step and ≥3-step change from baseline for each post-baseline assessment". A lower score represents better functioning.

    Time frame: Baseline, Week 54 and Week 96

  10. Number and Percentage of Subjects Developing Vision-threatening Complications Associated With Diabetic Retinopathy up to Week 54 and up to Week 96

    The vision-threatening complications associated with Diabetic retinopathy (DR) are defined as any event of the following list occurring in the study eye at any time point after Baseline: * Center-involved Diabetic macular edema (CI-DME) as defined as Central sub-field thickness (CSFT) ≥280 µm according to Central reading center (CRC) evaluation of Optical coherent tomography (OCT) image * Retinal detachment * Vitreous hemorrhage * Neovascular glaucoma, iris/ anterior chamber angle neovascularization * Vitrectomy for DR complications

    Time frame: up to Week 54 and up to Week 96

  11. Ocular AEs (>= 2% in Any Treatment Arm) by Preferred Term for the Study Eye

    An adverse event (AE) is any untoward medical occurrence (e.g. any unfavorable and unintended sign \[including abnormal laboratory findings\], symptom or disease) in a subject or clinical investigation subject. AEs that started after alternative diabetic retinopathy treatment/relevant diabetic macular edema treatment in the study eye are censored.

    Time frame: Adverse events are reported from first dose of study treatment up to Week 90, plus approximately 6 weeks post-treatment, up to a maximum timeframe of approximately 96 weeks.

  12. Non-ocular AEs (≥ 2% in Any Treatment Arm) by Preferred Term

    An adverse event (AE) is any untoward medical occurrence (e.g. any unfavorable and unintended sign \[including abnormal laboratory findings\], symptom or disease) in a subject or clinical investigation subject. AEs that started after alternative diabetic retinopathy treatment/relevant diabetic macular edema treatment in the study eye are censored.

    Time frame: Adverse events are reported from first dose of study treatment up to Week 90, plus approximately 6 weeks post-treatment, up to a maximum timeframe of approximately 96 weeks.

07

Results

Posted Aug 20, 2024

Participant flow

Participant flow — Overall Study
MilestoneBrolucizumab 6 mgPanretinal Photocoagulation Laser Arm
Started347342
Completed301287
Not completed4655
Withdrew: Withdrawal by subject2020
Withdrew: Progressive disease02
Withdrew: Physician decision46
Withdrew: Lost to follow-up1113
Withdrew: Death89
Withdrew: Adverse event35

Outcome measures

PrimaryChange From Baseline in Best-corrected Visual Acuity (BCVA) at Week 54 for the Study Eye

BCVA was assessed using Early Treatment Diabetic Retinopathy Study (ETDRS) visual acuity testing charts. Visual function of the study eye was assessed using the ETDRS protocol. Participants with a BCVA ETDRS letter score of \>= 34 ETDRS letters (Snellen equivalent 20/200) at Screening / Baseline in the study eye were included. Min and max possible scores are 0-100 respectively. A higher score represents better functioning. Last observation carried forward (LOCF) was used for the imputation of missing values.

Time frame:
Baseline, Week 54
Reported as:
Least squares mean · Letters Read
Change From Baseline in Best-corrected Visual Acuity (BCVA) at Week 54 for the Study Eye
Letters ReadBrolucizumab 6 mgPanretinal Photocoagulation Laser Arm
Change From Baseline in Best-corrected Visual Acuity (BCVA) at Week 54 for the Study Eye0.2 ± 0.72-4.2 ± 0.73
Statistical analysis
  • Brolucizumab 6 mg vs Panretinal Photocoagulation Laser Arm · ANCOVA · p = <0.001 · Ls mean difference: 4.4 · 95% CI 2.4 to 6.4
  • Brolucizumab 6 mg vs Panretinal Photocoagulation Laser Arm · ANCOVA · p = <0.001
SecondaryNumber and Percentage of Subjects With no Proliferative Diabetic Retinopathy (PDR) at Week 54 for the Study Eye

Proliferative diabetic retinopathy (PDR) is derived from the diabetic retinopathy severity scale (DRSS) as assessed by the central reading center (CRC) using 7-field color fundus photography image. The DRSS on the original score with scores varying from 10 (DR absent) to 85 (very advanced PDR) were then converted into a 12-level scale (Range is from 1 - diabetic retinopathy (DR) absent, to 12- very advanced PDR). (A lower score represents a better outcome.) The event of "No PDR" is then defined as DRSS (12-level scale) \< 7.

Time frame:
Week 54
Reported as:
Count of participants · Participants
Number and Percentage of Subjects With no Proliferative Diabetic Retinopathy (PDR) at Week 54 for the Study Eye
ParticipantsBrolucizumab 6 mgPanretinal Photocoagulation Laser Arm
Number and Percentage of Subjects With no Proliferative Diabetic Retinopathy (PDR) at Week 54 for the Study Eye18765
Statistical analysis
  • Brolucizumab 6 mg vs Panretinal Photocoagulation Laser Arm · Cochran-Mantel-Haenszel · p = < 0.001 · Difference in % of participants: 39.4 · 95% CI 32.0 to 46.8
SecondaryNumber and Percentage of Subjects With no Proliferative Diabetic Retinopathy (PDR) at Week 96 for the Study Eye

Proliferative diabetic retinopathy (PDR) is derived from the diabetic retinopathy severity scale (DRSS) as assessed by the central reading center (CRC) using 7-field color fundus photography image. The DRSS on the original score with scores varying from 10 (DR absent) to 85 (very advanced PDR) were then converted into a 12-level scale (Range is from 1 - diabetic retinopathy (DR) absent, to 12- very advanced PDR). (A lower score represents a better outcome.) The event of "No PDR" is then defined as DRSS (12-level scale) \< 7.

Time frame:
Week 96
Reported as:
Count of participants · Participants
Number and Percentage of Subjects With no Proliferative Diabetic Retinopathy (PDR) at Week 96 for the Study Eye
ParticipantsBrolucizumab 6 mgPanretinal Photocoagulation Laser Arm
Number and Percentage of Subjects With no Proliferative Diabetic Retinopathy (PDR) at Week 96 for the Study Eye18886
SecondaryNumber and Percentage of Subjects With Center-involved Diabetic Macular Edema (CI- DME) up to Week 54 for the Study Eye

Assessed by Spectral domain optical coherence tomography (SD-OCT) from the central reading center. PRP = Panretinal photocoagulation laser

Time frame:
Up to Week 54
Reported as:
Count of participants · Participants
Number and Percentage of Subjects With Center-involved Diabetic Macular Edema (CI- DME) up to Week 54 for the Study Eye
ParticipantsBrolucizumab 6 mgPanretinal Photocoagulation Laser Arm
Number and Percentage of Subjects With Center-involved Diabetic Macular Edema (CI- DME) up to Week 54 for the Study Eye108248
Statistical analysis
  • Brolucizumab 6 mg vs Panretinal Photocoagulation Laser Arm · Cochran-Mantel-Haenszel · p = < 0.001 · Difference in % of participants: -41.1 · 95% CI -48.0 to -34.2
SecondaryNumber and Percentage of Subjects With Center-involved Diabetic Macular Edema (CI- DME) up to Week 96 for the Study Eye

Assessed by Spectral domain optical coherence tomography (SD-OCT) from the central reading center. PRP = Panretinal photocoagulation laser

Time frame:
Up to Week 96
Reported as:
Count of participants · Participants
Number and Percentage of Subjects With Center-involved Diabetic Macular Edema (CI- DME) up to Week 96 for the Study Eye
ParticipantsBrolucizumab 6 mgPanretinal Photocoagulation Laser Arm
Number and Percentage of Subjects With Center-involved Diabetic Macular Edema (CI- DME) up to Week 96 for the Study Eye126262
SecondaryArea Under the Curve in Change From Baseline in BCVA up to Week 54 and up to Week 96 - for the Study Eye

BCVA was assessed using Early Treatment Diabetic Retinopathy Study (ETDRS) visual acuity testing charts. Visual function of the study eye was assessed using the ETDRS protocol. Participants with a BCVA ETDRS letter score of \>= 34 ETDRS letters (Snellen equivalent 20/200) at Screening / Baseline in the study eye were included. Min and max possible scores are 0-100 respectively. A higher score represents better functioning. Last observation carried forward (LOCF) was used for the imputation of missing values. The AUC in change from Baseline in BCVA up to Week 54 (or Week 96) is referred to as the averaged change from Baseline in BCVA at each visit up to 54 (or Week 96), which was calculated as (BCVA at Week 6 + BCVA at Week 12 + ... + BCVA at Week 54 (or Week 96)) / number of visits with valid BCVA data from Week 6 to Week 54 (or Week 96) - BCVA at Baseline.

Time frame:
Baseline, up to Week 54 and up to Week 96
Reported as:
Least squares mean · Letters read
Area Under the Curve in Change From Baseline in BCVA up to Week 54 and up to Week 96 - for the Study Eye
Letters readBrolucizumab 6 mgPanretinal Photocoagulation Laser Arm
up to Week 540.5 (-0.4 to 1.4)-3.2 (-4.2 to -2.3)
up to Week 96-0.1 (-1.2 to 1.1)-4.3 (-5.4 to -3.1)
SecondaryDiabetic Retinopathy Severity Scale (DRSS): Number and Percentage of Subjects With ≥2 Steps Improvement From Baseline in Early Treatment Diabetic Retinopathy Study (ETDRS) DRSS Score at Week 54 and Week 96

Severity of Diabetic retinopathy was evaluated using the ETDRS DRSS score assessed by the Central Reading Center based on color fundus photography images in the study eye. When the ETDRS-DR severities were evaluable, they were categorized on the original scale with scores varying from 10 (DR absent) to 85 (very advanced PDR). All DRSS values were then converted into a 12-level scale, allowing the derivation of the ≥2-step and ≥3-step change from baseline for each post-baseline assessment". A lower score represents better functioning.

Time frame:
Baseline, Week 54 and Week 96
Reported as:
Count of participants · Participants
Diabetic Retinopathy Severity Scale (DRSS): Number and Percentage of Subjects With ≥2 Steps Improvement From Baseline in Early Treatment Diabetic Retinopathy Study (ETDRS) DRSS Score at Week 54 and Week 96
ParticipantsBrolucizumab 6 mgPanretinal Photocoagulation Laser Arm
Week 54 (n=282, 279)12857
Week 96 (n=295, 289)12365
Statistical analysis
  • Brolucizumab 6 mg vs Panretinal Photocoagulation Laser Arm · Cochran-Mantel-Haenszel · p = <0.001 · Difference in % of participants: 26.4 · 95% CI 19.5 to 33.3
SecondaryDiabetic Retinopathy Severity Scale (DRSS): Number and Percentage of Subjects With ≥2 Steps Worsening From Baseline in Early Treatment Diabetic Retinopathy Study (ETDRS) DRSS Score at Week 54 and Week 96

Severity of Diabetic retinopathy was evaluated using the ETDRS DRSS score assessed by the Central Reading Center based on color fundus photography images in the study eye. When the ETDRS-DR severities were evaluable, they were categorized on the original scale with scores varying from 10 (DR absent) to 85 (very advanced PDR). All DRSS values were then converted into a 12-level scale, allowing the derivation of the ≥2-step and ≥3-step change from baseline for each post-baseline assessment". A lower score represents better functioning.

Time frame:
Baseline, Week 54 and Week 96
Reported as:
Count of participants · Participants
Diabetic Retinopathy Severity Scale (DRSS): Number and Percentage of Subjects With ≥2 Steps Worsening From Baseline in Early Treatment Diabetic Retinopathy Study (ETDRS) DRSS Score at Week 54 and Week 96
ParticipantsBrolucizumab 6 mgPanretinal Photocoagulation Laser Arm
Week 54 (n=225,220)631
Week 96 (n=236, 201)1827
SecondaryDiabetic Retinopathy Severity Scale (DRSS): Number and Percentage of Subjects With ≥3 Steps Improvement From Baseline in Early Treatment Diabetic Retinopathy Study (ETDRS) DRSS Score at Week 54 and Week 96

Severity of Diabetic retinopathy was evaluated using the ETDRS DRSS score assessed by the Central Reading Center based on color fundus photography images in the study eye. When the ETDRS-DR severities were evaluable, they were categorized on the original scale with scores varying from 10 (DR absent) to 85 (very advanced PDR). All DRSS values were then converted into a 12-level scale, allowing the derivation of the ≥2-step and ≥3-step change from baseline for each post-baseline assessment". A lower score represents better functioning.

Time frame:
Baseline, Week 54 and Week 96
Reported as:
Count of participants · Participants
Diabetic Retinopathy Severity Scale (DRSS): Number and Percentage of Subjects With ≥3 Steps Improvement From Baseline in Early Treatment Diabetic Retinopathy Study (ETDRS) DRSS Score at Week 54 and Week 96
ParticipantsBrolucizumab 6 mgPanretinal Photocoagulation Laser Arm
Week 54 (n=282, 279)5830
Week 96 (n=295, 289)4933
SecondaryDiabetic Retinopathy Severity Scale (DRSS): Number and Percentage of Subjects With ≥3 Steps Worsening From Baseline in Early Treatment Diabetic Retinopathy Study (ETDRS) DRSS Score at Week 54 and Week 96

Severity of Diabetic retinopathy was evaluated using the ETDRS DRSS score assessed by the Central Reading Center based on color fundus photography images in the study eye. When the ETDRS-DR severities were evaluable, they were categorized on the original scale with scores varying from 10 (DR absent) to 85 (very advanced PDR). All DRSS values were then converted into a 12-level scale, allowing the derivation of the ≥2-step and ≥3-step change from baseline for each post-baseline assessment". A lower score represents better functioning.

Time frame:
Baseline, Week 54 and Week 96
Reported as:
Count of participants · Participants
Diabetic Retinopathy Severity Scale (DRSS): Number and Percentage of Subjects With ≥3 Steps Worsening From Baseline in Early Treatment Diabetic Retinopathy Study (ETDRS) DRSS Score at Week 54 and Week 96
ParticipantsBrolucizumab 6 mgPanretinal Photocoagulation Laser Arm
Week 54 (n=225, 220)416
Week 96 (n=236, 201)1116
SecondaryNumber and Percentage of Subjects Developing Vision-threatening Complications Associated With Diabetic Retinopathy up to Week 54 and up to Week 96

The vision-threatening complications associated with Diabetic retinopathy (DR) are defined as any event of the following list occurring in the study eye at any time point after Baseline: * Center-involved Diabetic macular edema (CI-DME) as defined as Central sub-field thickness (CSFT) ≥280 µm according to Central reading center (CRC) evaluation of Optical coherent tomography (OCT) image * Retinal detachment * Vitreous hemorrhage * Neovascular glaucoma, iris/ anterior chamber angle neovascularization * Vitrectomy for DR complications

Time frame:
up to Week 54 and up to Week 96
Reported as:
Count of participants · Participants
Number and Percentage of Subjects Developing Vision-threatening Complications Associated With Diabetic Retinopathy up to Week 54 and up to Week 96
ParticipantsBrolucizumab 6 mgPanretinal Photocoagulation Laser Arm
up to Week 54117258
up to Week 96144270
SecondaryOcular AEs (>= 2% in Any Treatment Arm) by Preferred Term for the Study Eye

An adverse event (AE) is any untoward medical occurrence (e.g. any unfavorable and unintended sign \[including abnormal laboratory findings\], symptom or disease) in a subject or clinical investigation subject. AEs that started after alternative diabetic retinopathy treatment/relevant diabetic macular edema treatment in the study eye are censored.

Time frame:
Adverse events are reported from first dose of study treatment up to Week 90, plus approximately 6 weeks post-treatment, up to a maximum timeframe of approximately 96 weeks.
Reported as:
Count of participants · Participants
Ocular AEs (>= 2% in Any Treatment Arm) by Preferred Term for the Study Eye
ParticipantsBrolucizumab 6 mgPanretinal Photocoagulation Laser Arm
Number of subjects with at least one AE152199
-Vitreous hemorrhage3883
-Cataract2627
-Dry eye158
-Intraocular pressure increased123
-Conjunctival hemorrhage105
-Macular oedema934
-Vitreous floaters99
-Conjunctivitis74
-Diabetic retinal oedema736
-Retinal hemorrhage512
-Diabetic retinopathy413
-Eye pain37
SecondaryNon-ocular AEs (≥ 2% in Any Treatment Arm) by Preferred Term

An adverse event (AE) is any untoward medical occurrence (e.g. any unfavorable and unintended sign \[including abnormal laboratory findings\], symptom or disease) in a subject or clinical investigation subject. AEs that started after alternative diabetic retinopathy treatment/relevant diabetic macular edema treatment in the study eye are censored.

Time frame:
Adverse events are reported from first dose of study treatment up to Week 90, plus approximately 6 weeks post-treatment, up to a maximum timeframe of approximately 96 weeks.
Reported as:
Count of participants · Participants
Non-ocular AEs (≥ 2% in Any Treatment Arm) by Preferred Term
ParticipantsBrolucizumab 6 mgPanretinal Photocoagulation Laser Arm
Number of subjects with at least one AE226217
COVID-194447
Hypertension3524
Upper respiratory tract infection2816
Nasopharyngitis2216
Anaemia1515
Cough1510
Pyrexia157
Hyperglycaemia1310
Hyperkalaemia122
Urinary tract infection1213
Diabetes mellitus105
Pneumonia104
Coronary artery disease95
Hyperlipidaemia98
Hyperuricaemia94
Chronic kidney disease85
Depression83
Blood glucose increased75
Hypercholesterolaemia75
Nausea76
Type 2 diabetes mellitus76
Arthralgia57
Influenza58
-Vomiting59
Diabetic neuropathy210
Diabetic foot17
Post-hocAll Collected Deaths

On-treatment deaths are reported from first dose of study treatment until end of study treatment at the time of the interim analysis, plus 4 weeks post treatment, up to a maximum timeframe of approximately 96 weeks. Post-treatment deaths are reported for the timeframe of greater than 30 days after last treatment, also up to Week 96. All deaths refer to the sum of on-treatment and post-treatment deaths.

Time frame:
On-treatment - within 30 days after last treatment, up to Week 96; Post-treatment - greater than 30 days after last treatment, also up to Week 96.

Results for this outcome have not been posted.

Adverse events

Collected over Adverse events are reported from first dose of study treatment up to Week 90, plus approximately 6 weeks post-treatment, up to a maximum timeframe of approximately 96 weeks.. Non-serious events are listed at a 2% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Brolucizumab 6mg8/347 (2.3%)96/347 (27.7%)241/347 (69.5%)
Panretinal Photocoagulation Laser Arm9/342 (2.6%)105/342 (30.7%)254/342 (74.3%)
Overall17/689 (2.5%)201/689 (29.2%)495/689 (71.8%)
Most frequent serious events
Showing 10 of 172
Most frequent serious events
EventBrolucizumab 6mgPanretinal Photocoagulation Laser ArmOverall
Vitreous haemorrhage - Study eyeEye disorders4/34719/34223/689
Vitreous haemorrhage - Fellow eyeEye disorders14/3479/34223/689
Cerebral infarctionNervous system disorders5/3471/3426/689
HypertensionVascular disorders5/3471/3426/689
Acute myocardial infarctionCardiac disorders0/3474/3424/689
Myocardial infarctionCardiac disorders1/3474/3425/689
Cataract - Study eyeEye disorders1/3474/3425/689
Chronic kidney diseaseRenal and urinary disorders1/3474/3425/689
Diabetic footSkin and subcutaneous tissue disorders0/3474/3424/689
PneumoniaInfections and infestations4/3471/3425/689
Most frequent other events
Showing 10 of 47
Most frequent other events
EventBrolucizumab 6mgPanretinal Photocoagulation Laser ArmOverall
Vitreous haemorrhage - Study eyeEye disorders40/34778/342118/689
COVID-19Infections and infestations44/34753/34297/689
Vitreous haemorrhage - Fellow eyeEye disorders35/34748/34283/689
Diabetic retinal oedema - Study eyeEye disorders8/34741/34249/689
Macular oedema - Study eyeEye disorders9/34734/34243/689
HypertensionVascular disorders31/34729/34260/689
Upper respiratory tract infectionInfections and infestations30/34718/34248/689
Cataract - Study eyeEye disorders26/34729/34255/689
Cataract - Fellow eyeEye disorders22/34728/34250/689
NasopharyngitisInfections and infestations22/34717/34239/689

Baseline characteristics

Age, Continuous
Age, Continuous(Years)Brolucizumab 6 mgPanretinal Photocoagulation Laser ArmTotal
Mean53.2 ± 11.8854.7 ± 10.8353.9 ± 11.39
Sex: Female, Male
Sex: Female, Male(Participants)Brolucizumab 6 mgPanretinal Photocoagulation Laser ArmTotal
Female144132276
Male203210413
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Brolucizumab 6 mgPanretinal Photocoagulation Laser ArmTotal
American Indian or Alaska Native134
Asian157148305
Native Hawaiian or Other Pacific Islander145
Black or African American221638
White166169335
More than one race011
Unknown or Not Reported011
08

Study locations

120 sites
  • Retina Associates SW
    Tucson, Arizona 85704, United States
  • Retina- Vitreous Assoc Medical Group
    Beverly Hills, California 90211, United States
  • Retina Consultants of Orange County
    Fullerton, California 92835, United States
  • Salehi Retina Institute
    Huntington Beach, California 92647, United States
  • Retina Consultants of Southern California
    Redlands, California 92374, United States
  • Premiere Practice Management LLC
    Torrance, California 90505, United States
  • Lundquist Inst BioMed at Harbor
    Torrance, California 90509-2910, United States
  • Miramar Eye Specialists
    Ventura, California 93003, United States
  • Advanced Research LLC
    Deerfield Beach, Florida 33064, United States
  • Rand Eye Institute
    Deerfield Beach, Florida 33064, United States
  • Pinnacle Research Institute
    Fort Lauderdale, Florida 33309, United States
  • National Ophthalmic Research Institute
    Fort Myers, Florida 33912-7125, United States
  • Florida Retina Institute
    Jacksonville, Florida 32216, United States
  • Blue Oc Clin Res at Palm Bch Eye Ct
    Lakeland, Florida 33801, United States
  • MedEye Associates
    Miami, Florida 33143, United States
  • Florida Retina Institute
    Orlando, Florida 32804, United States
  • Eye Center of North Florida
    Panama City, Florida 32405, United States
  • Fort Lauderdale Eye Institute
    Plantation, Florida 33324, United States
  • Retina Associates
    Elmhurst, Illinois 60126, United States
  • Midwest Eye Institute
    Indianapolis, Indiana 46280, United States
  • John-Kenyon American Eye Institute PC
    New Albany, Indiana 47150, United States
  • Retina Associates PA
    Lenexa, Kansas 66215, United States
  • Cumberland Valley Retina Consultants
    Hagerstown, Maryland 21740, United States
  • University of Mississippi Med Ctr
    Jackson, Mississippi 39216, United States
  • Retina Associates Of Cleveland
    Cleveland, Ohio 44122, United States
  • Dean McGee Eye Institute
    Oklahoma City, Oklahoma 73104, United States
  • Cascade Medical Research Institute
    Springfield, Oregon 97477, United States
  • Erie Retinal Surgery
    Erie, Pennsylvania 16507, United States
  • Charleston Neuroscience Institute
    Ladson, South Carolina 29456, United States
  • Southeastern Retina Associates P C
    Knoxville, Tennessee 37923, United States
  • Austin Retina Associates
    Austin, Texas 78705, United States
  • Texan Eye P A
    Austin, Texas 78731, United States
  • Retina And Vitreous Of Texas
    Bellaire, Texas 77401, United States
  • Retina Consultants TX Rsrch Ctr
    Bellaire, Texas 77401, United States
  • Texas Retina Associates
    Fort Worth, Texas 76104, United States
  • Valley Retina Institute PA
    Harlingen, Texas 78550, United States
  • Retina Consultants of Houston PA
    Houston, Texas 77030, United States
  • Medical Center Opthamology Assoc
    San Antonio, Texas 78240, United States
  • Retina Associates Of South Texas PA
    San Antonio, Texas 78240, United States
  • Virginia Eye Consultants
    Norfolk, Virginia 23502, United States
  • Novartis Investigative Site
    Caba, Buenos Aires 1116, Argentina
  • Novartis Investigative Site
    Ciudad Autonoma de Bs As, Buenos Aires C1015ABO, Argentina
  • Novartis Investigative Site
    Rosario, De Santa Fe B7602, Argentina
  • Novartis Investigative Site
    CABA, C1061AAE, Argentina
  • Novartis Investigative Site
    Albury, New South Wales 2640, Australia
  • Novartis Investigative Site
    Liverpool, New South Wales 2170, Australia
  • Novartis Investigative Site
    Parramatta, New South Wales 2150, Australia
  • Novartis Investigative Site
    Strathfield, New South Wales 2135, Australia
  • Novartis Investigative Site
    Porto Alegre, Rio Grande do Sul 90035-903, Brazil
  • Novartis Investigative Site
    Blumenau, Santa Catarina 89052-504, Brazil
  • Novartis Investigative Site
    São Paulo, São Paulo 01427-002, Brazil
  • Novartis Investigative Site
    Sorocaba, São Paulo 18031-060, Brazil
  • Novartis Investigative Site
    Ottawa, Ontario K2B 7E9, Canada
  • Novartis Investigative Site
    Toronto, Ontario M5T 2S8, Canada
  • Novartis Investigative Site
    Boisbriand, Quebec J7H 1S6, Canada
  • Novartis Investigative Site
    Québec, Quebec G1S 4L8, Canada
  • Novartis Investigative Site
    Santiago, RM 7560994, Chile
  • Novartis Investigative Site
    Beijing, Beijing Municipality 100044, China
  • Novartis Investigative Site
    Shantou, Guangdong 515041, China
  • Novartis Investigative Site
    Wuhan, Hubei 430060, China
  • Novartis Investigative Site
    Wuhan, Hubei 430070, China
  • Novartis Investigative Site
    Nanjing, Jiangsu 210000, China
  • Novartis Investigative Site
    Nantong, Jiangsu 226000, China
  • Novartis Investigative Site
    Changchun, Jilin 130041, China
  • Novartis Investigative Site
    Shenyang, Liaoning 110000, China
  • Novartis Investigative Site
    Xi'an, Shaanxi 710004, China
  • Novartis Investigative Site
    Chengdu, Sichuan 610041, China
  • Novartis Investigative Site
    Tianjin, Tianjin Municipality 300020, China
  • Novartis Investigative Site
    Wenzhou, Zhejiang 325027, China
  • Novartis Investigative Site
    Beijing, 100050, China
  • Novartis Investigative Site
    Beijing, 100191, China
  • Novartis Investigative Site
    Beijing, 100730, China
  • Novartis Investigative Site
    Shanghai, 200080, China
  • Novartis Investigative Site
    Ahmedabad, Gujarat 380 016, India
  • Novartis Investigative Site
    Coimbatore, Tamil Nadu 641014, India
  • Novartis Investigative Site
    Tirunelveli, Tamil Nadu 627003, India
  • Novartis Investigative Site
    Chandigarh, 160012, India
  • Novartis Investigative Site
    New Delhi, 110 029, India
  • Novartis Investigative Site
    Nagakute, Aichi-ken 480-1195, Japan
  • Novartis Investigative Site
    Nagoya, Aichi-ken 466 8560, Japan
  • Novartis Investigative Site
    Sakura, Chiba 285-8741, Japan
  • Novartis Investigative Site
    Yoshida-gun, Fukui 910-1193, Japan
  • Novartis Investigative Site
    Kurume, Fukuoka 830-0011, Japan
  • Novartis Investigative Site
    Kōriyama, Fukushima 963-8052, Japan
  • Novartis Investigative Site
    Asahikawa, Hokkaido 078 8510, Japan
  • Novartis Investigative Site
    Kita-gun, Kagawa-ken 761-0793, Japan
  • Novartis Investigative Site
    Tsu, Mie-ken 514-8507, Japan
  • Novartis Investigative Site
    Matsumoto, Nagano 390-8621, Japan
  • Novartis Investigative Site
    Shimotsuke, Tochigi 329-0498, Japan
  • Novartis Investigative Site
    Chiyoda-ku, Tokyo 101-8309, Japan
  • Novartis Investigative Site
    Hachiōji, Tokyo 193-0944, Japan
  • Novartis Investigative Site
    Meguro-ku, Tokyo 152-8902, Japan
  • Novartis Investigative Site
    Akita, 010-8543, Japan
  • Novartis Investigative Site
    Kobe, 650-0017, Japan
  • Novartis Investigative Site
    Osaka, 545-8586, Japan
  • Novartis Investigative Site
    Ciudad de, Mexico City 06800, Mexico
  • Novartis Investigative Site
    Mexico City, 06760, Mexico
  • Novartis Investigative Site
    Tijuana, 22010, Mexico
  • Novartis Investigative Site
    Makati, NCR 1229, Philippines
  • Novartis Investigative Site
    Makati, 1229, Philippines

Showing the first 100 of 120 sites across 16 countries.

09

References and documents

Publications

  • Wolf S, Chen Y, Li X, Shimura M, Sakamoto T, Wykoff CC, Emanuelli A, Salehi-Had H, Yan K, Kovacic L, Kim Y. Brolucizumab in the Treatment of Proliferative Diabetic Retinopathy: The CONDOR Randomized Clinical Trial. JAMA Ophthalmol. 2026 Jun 1;144(6):500-507. doi: 10.1001/jamaophthalmol.2026.1008. PubMed 42024409 ↗

Study documents

  • Study protocol · Sep 28, 2021
  • Statistical analysis plan · Nov 17, 2023

Documents are hosted by the registry — open the source record to download them.

Individual participant data

Plan to share: Yes — Novartis is committed to sharing with qualified external researchers, access to patient-level data and supporting clinical documents from eligible studies. These requests are reviewed and approved by an independent review panel on the basis of scientific merit. All data provided is anonymized to respect the privacy of patients who have participated in the trial in line with applicable laws and regulations. This trial data availability is according to the criteria and process described on www.clinicalstudydatarequest.com.

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Oct 16, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT04278417
Lead sponsor
Novartis Pharmaceuticals
Responsible party
Sponsor
First posted
Feb 20, 2020
Start date
Nov 19, 2020
Primary completion
Oct 30, 2023
Completion
Aug 19, 2024
Results posted
Aug 20, 2024
Last update
Oct 16, 2025

Study contacts

Novartis Pharmaceuticals
study director · Novartis Pharmaceuticals

Oversight

Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Oct 2025. You cannot join it, but the record below documents what was studied.

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Discussion

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