A Proof-of-Concept Study of Faricimab (RO6867461) in Participants With Choroidal Neovascularization (CNV) Secondary to Age-Related Macular Degeneration (AMD)

Best corrected visual acuity (BCVA) at a starting test distance of 4 meters was measured using a set of three Precision VisionTM or Lighthouse distance acuity charts (modified ETDRS Charts 1, 2, and R) prior to dilating eyes by a trained and certified visual acuity examiner masked to study drug arm assignment. The BCVA examiner was masked to study eye and treatment assignment and only performed the refraction and BCVA assessment, but was not allowed to perform any other tasks involving direct care. The BCVA examiner was also masked to the BCVA letter scores of a participant's previous visits and could only know the participant's refraction data from previous visits. The BCVA letter score ranges from 0 to 100 (best score attainable), and a gain in BCVA letter score from baseline indicates an improvement in visual acuity. The outcome measure was analyzed using a Generalized Estimating Equations Model. Missing values were not imputed; it was assumed that the data were missing at random.

Best corrected visual acuity (BCVA) at a starting test distance of 4 meters was measured using a set of three Precision VisionTM or Lighthouse distance acuity charts (modified ETDRS Charts 1, 2, and R) prior to dilating eyes by a trained and certified visual acuity examiner masked to study drug arm assignment. The BCVA examiner was masked to study eye and treatment assignment and only performed the refraction and BCVA assessment, but was not allowed to perform any other tasks involving direct care. The BCVA examiner was also masked to the BCVA letter scores of a participant's previous visits and could only know the participant's refraction data from previous visits. The BCVA letter score ranges from 0 to 100 (best score attainable), and a gain in BCVA letter score from baseline indicates an improvement in visual acuity. Missing values were not imputed; it was assumed that the data were missing at random.

Best corrected visual acuity (BCVA) at a starting test distance of 4 meters was measured using a set of three Precision VisionTM or Lighthouse distance acuity charts (modified ETDRS Charts 1, 2, and R) prior to dilating eyes by a trained and certified visual acuity examiner masked to study drug arm assignment. The BCVA examiner was masked to study eye and treatment assignment and only performed the refraction and BCVA assessment, but was not allowed to perform any other tasks involving direct care. The BCVA examiner was also masked to the BCVA letter scores of a participant's previous visits and could only know the participant's refraction data from previous visits. The BCVA letter score ranges from 0 to 100 (best score attainable), and a gain in BCVA letter score from baseline indicates an improvement in visual acuity. The outcome measure was analyzed using a Generalized Estimating Equations Model. Missing values were not imputed; it was assumed that the data were missing at random.

Best corrected visual acuity (BCVA) at a starting test distance of 4 meters was measured using a set of three Precision VisionTM or Lighthouse distance acuity charts (modified ETDRS Charts 1, 2, and R) prior to dilating eyes by a trained and certified visual acuity examiner masked to study drug arm assignment. The BCVA examiner was masked to study eye and treatment assignment and only performed the refraction and BCVA assessment, but was not allowed to perform any other tasks involving direct care. The BCVA examiner was also masked to the BCVA letter scores of a participant's previous visits and could only know the participant's refraction data from previous visits. The BCVA letter score ranges from 0 to 100 (best score attainable), and a gain in BCVA letter score from baseline indicates an improvement in visual acuity. Missing values were not imputed; it was assumed that the data were missing at random.

Best corrected visual acuity (BCVA) at a starting test distance of 4 meters was measured using a set of three Precision VisionTM or Lighthouse distance acuity charts (modified ETDRS Charts 1, 2, and R) prior to dilating eyes by a trained and certified visual acuity examiner masked to study drug arm assignment. The BCVA examiner was masked to study eye and treatment assignment and only performed the refraction and BCVA assessment, but was not allowed to perform any other tasks involving direct care. The BCVA examiner was also masked to the BCVA letter scores of a participant's previous visits and could only know the participant's refraction data from previous visits. The BCVA letter score ranges from 0 to 100 (best score attainable), and a gain in BCVA letter score from baseline indicates an improvement in visual acuity. The outcome measure was analyzed using a Generalized Estimating Equations Model. Missing values were not imputed; it was assumed that the data were missing at random.

Best corrected visual acuity (BCVA) at a starting test distance of 4 meters was measured using a set of three Precision VisionTM or Lighthouse distance acuity charts (modified ETDRS Charts 1, 2, and R) prior to dilating eyes by a trained and certified visual acuity examiner masked to study drug arm assignment. The BCVA examiner was masked to study eye and treatment assignment and only performed the refraction and BCVA assessment, but was not allowed to perform any other tasks involving direct care. The BCVA examiner was also masked to the BCVA letter scores of a participant's previous visits and could only know the participant's refraction data from previous visits. The BCVA letter score ranges from 0 to 100 (best score attainable), and a gain in BCVA letter score from baseline indicates an improvement in visual acuity. Missing values were not imputed; it was assumed that the data were missing at random.

Foveal center point thickness (FCPT) is defined as the thickness from the inner limiting membrane to the retinal pigment epithelial at the horizontal slice closest to the center of the fovea. Foveal center point thickness was measured using spectral domain optical coherence tomography (SD-OCT). Anatomic outcome measures were based on results from a central reading center. This analysis used a Mixed Effects Model for Repeated Measurements (MMRM). Missing data were implicitly imputed by the MMRM, assuming a missing-at-random mechanism.

Foveal center point thickness (FCPT) is defined as the thickness from the inner limiting membrane to the retinal pigment epithelial at the horizontal slice closest to the center of the fovea. Foveal center point thickness was measured using spectral domain optical coherence tomography (SD-OCT). Anatomic outcome measures were based on results from a central reading center. This analysis used a Mixed Effects Model for Repeated Measurements (MMRM). Missing data were implicitly imputed by the MMRM, assuming a missing-at-random mechanism.

Central subfield thickness (CST) is defined as the mean thickness from the inner limiting membrane to the retinal pigment epithelial over the 1 millimetre (mm) central subfield. Central subfield thickness was measured using spectral domain optical coherence tomography (SD-OCT). Anatomic outcome measures were based on results from a central reading center. This analysis used a Mixed Effects Model for Repeated Measurements (MMRM). Missing data were implicitly imputed by the MMRM, assuming a missing-at-random mechanism.

Central subfield thickness (CST) is defined as the mean thickness from the inner limiting membrane to the retinal pigment epithelial over the 1 millimetre (mm) central subfield. Central subfield thickness was measured using spectral domain optical coherence tomography (SD-OCT). Anatomic outcome measures were based on results from a central reading center. This analysis used a Mixed Effects Model for Repeated Measurements (MMRM). Missing data were implicitly imputed by the MMRM, assuming a missing-at-random mechanism.

The presence of cysts, intraretinal fluid, pigment epithelial detachment, or subretinal fluid, as per the study's dry retina definition, were evaluated as individual dry retina outcomes. Cysts were defined as the presence of cystoid space (fluid) in the retina. Intraretinal fluid was defined as the presence of fluid within the retina. Pigment epithelial detachment was defined as the presence of a detachment of the pigment epithelium from the Bruch's membrane. Subretinal fluid was defined as the presence of fluid between the retina and the retinal pigment epithelium. All parameters were measured using spectral domain optical coherence tomography (SD-OCT). Anatomic outcome measures were based on results from a central reading center.

The presence of cysts, intraretinal fluid, pigment epithelial detachment, or subretinal fluid, as per the study's dry retina definition, were evaluated as individual dry retina outcomes. Cysts were defined as the presence of cystoid space (fluid) in the retina. Intraretinal fluid was defined as the presence of fluid within the retina. Pigment epithelial detachment was defined as the presence of a detachment of the pigment epithelium from the Bruch's membrane. Subretinal fluid was defined as the presence of fluid between the retina and the retinal pigment epithelium. All parameters were measured using spectral domain optical coherence tomography (SD-OCT). Anatomic outcome measures were based on results from a central reading center.

The total area of choroidal neovascularization (CNV) was evaluated by a central reading center using fundus fluorescein angiography (FFA). This analysis used a Mixed Effects Model for Repeated Measurements (MMRM). Missing data were implicitly imputed by the MMRM, assuming a missing-at-random mechanism.

The total area of choroidal neovascularization (CNV) was evaluated by a central reading center using fundus fluorescein angiography (FFA).

The total area of choroidal neovascularization (CNV) component (i.e., total area of CNV membrane) was evaluated by a central reading center using fundus fluorescein angiography (FFA). This analysis used a Mixed Effects Model for Repeated Measurements (MMRM). Missing data were implicitly imputed by the MMRM, assuming a missing-at-random mechanism.

The total area of choroidal neovascularization (CNV) component (i.e., total area of CNV membrane) was evaluated by a central reading center using fundus fluorescein angiography (FFA).

The total area of leakage was evaluated by a central reading center using fundus fluorescein angiography (FFA). This analysis used a Mixed Effects Model for Repeated Measurements (MMRM). Missing data were implicitly imputed by the MMRM, assuming a missing-at-random mechanism.

The total area of leakage was evaluated by a central reading center using fundus fluorescein angiography (FFA).

This safety summary reports the number and percentage of participants who experienced at least one adverse event (AE) during the study. AEs are categorized as any AEs, ocular AEs occurring in the study eye or fellow eye, systemic AEs, serious AEs, AEs related to treatment with study drug, AEs leading to discontinuation (withdrawal) of treatment with study drug, and AEs with fatal outcome. The investigator independently assessed the seriousness and severity for each AE. Severity was graded according to the following grading scale: Mild = Discomfort noticed, but no disruption of normal daily activity; Moderate = Discomfort sufficient to reduce or affect normal daily activity; Severe = Incapacitating with inability to work or to perform normal daily activity. Severity and seriousness are not synonymous; regardless of severity, some AEs may have also met seriousness criteria.

The investigator assessed adverse event severity according to the following grading scale: Mild = Discomfort noticed, but no disruption of normal daily activity; Moderate = Discomfort sufficient to reduce or affect normal daily activity; Severe = Incapacitating with inability to work or to perform normal daily activity. Only the most severe intensity was counted for multiple occurrences of the same adverse event per participant at the preferred term level. Severity and seriousness are not synonymous; regardless of severity, some adverse events may have also met seriousness criteria.

The investigator assessed adverse event severity according to the following grading scale: Mild = Discomfort noticed, but no disruption of normal daily activity; Moderate = Discomfort sufficient to reduce or affect normal daily activity; Severe = Incapacitating with inability to work or to perform normal daily activity. Only the most severe intensity was counted for multiple occurrences of the same adverse event per participant at the preferred term level. Severity and seriousness are not synonymous; regardless of severity, some adverse events may have also met seriousness criteria.

Abnormal systolic blood pressure (supine) was defined as any value outside of the standard reference range, from <70 (low) to >140 (high) millimetres of mercury (mmHg). Baseline was defined as the last non-missing predose assessment. Not every abnormal vital sign qualified as an adverse event, only if it met any of the following criteria: clinically significant (per investigator); accompanied by clinical symptoms; resulted in a change in study treatment; or required a change in concomitant therapy.

Abnormal diastolic blood pressure (supine) was defined as any value outside of the standard reference range, from <40 (low) to >90 (high) millimetres of mercury (mmHg). Baseline was defined as the last non-missing predose assessment. Not every abnormal vital sign qualified as an adverse event, only if it met any of the following criteria: clinically significant (per investigator); accompanied by clinical symptoms; resulted in a change in study treatment; or required a change in concomitant therapy.

Abnormal heart rate (supine) was defined as any value outside of the standard reference range, from <40 (low) to >100 (high) beats per minute. Baseline was defined as the last non-missing predose assessment. Not every abnormal vital sign qualified as an adverse event, only if it met any of the following criteria: clinically significant (per investigator); accompanied by clinical symptoms; resulted in a change in study treatment; or required a change in concomitant therapy.

Abnormal body temperature (supine) was defined as any value outside of the standard reference range, from <36.5 (low) to >37.5 (high) degrees Celsius. Baseline was defined as the last non-missing predose assessment. Not every abnormal vital sign qualified as an adverse event, only if it met any of the following criteria: clinically significant (per investigator); accompanied by clinical symptoms; resulted in a change in study treatment; or required a change in concomitant therapy.

Clinical laboratory tests for hematology and coagulation parameters were performed and any marked abnormal values (High or Low) were based on Roche's predefined standard reference ranges. Marked laboratory abnormalities are presented according to COG3007 abnormality criteria: Single, Not Last = abnormality detected at a single assessment, but not at the last assessment; Last or Replicated = abnormality detected at the last assessment or replicated at one or more assessments. Not every laboratory abnormality qualified as an adverse event, only if it met any of the following criteria: clinically significant (per investigator); accompanied by clinical symptoms; resulted in a change in study treatment; or required a change in concomitant therapy. Abs. = absolute count; Corp. = corpuscular; Ery. = erythrocyte; INR = International Normalized Ratio

Clinical laboratory tests for blood chemistry parameters were performed and any marked abnormal values (High or Low) were based on Roche's predefined standard reference ranges. Marked laboratory abnormalities are presented according to COG3007 abnormality criteria: Single, Not Last = abnormality detected at a single assessment, but not at the last assessment; Last or Replicated = abnormality detected at the last assessment or replicated at one or more assessments. Not every laboratory abnormality qualified as an adverse event, only if it met any of the following criteria: clinically significant (per investigator); accompanied by clinical symptoms; resulted in a change in study treatment; or required a change in concomitant therapy. GGT = gamma-glutamyltransferase; SGOT/AST = serum glutamic oxaloacetic transaminase / aspartate aminotransferase; SGPT/ALT = serum glutamic pyruvic transaminase / alanine aminotransferase

Intraocular pressure is the fluid pressure inside the eye. The method used to measure intraocular pressure (e.g., Goldmann tonometry) for each participant was to be applied consistently by the investigator throughout the study. On the day of dosing, intraocular pressure was monitored at 30 minutes post-treatment administration, and if intraocular pressure was ≥30 mmHg in the study eye, it was reassessed at 1 hour post-treatment administration.

Blood samples were obtained for measurement of anti-faricimab antibodies by a validated enzyme-linked immunosorbent assay (ELISA).

Plasma concentrations of faricimab were measured by a specific validated enzyme-linked immunoabsorbent assay (ELISA) only from samples of participants randomized to receive faricimab. Baseline was defined as the last non-missing predose assessment. The lower limit of quantification (LLOQ) for the faricimab assay was 0.800 nanograms per millilitre (ng/mL). Values below the limit of quantification were imputed as LLOQ divided by 2.

The concentration of free VEGF was determined in plasma samples using an enzyme-linked immunosorbent assay (ELISA) method. The lower limit of quantification (LLOQ) of the assay was 15.6 picograms per millilitre (pg/mL). Plasma free VEGF concentrations below the limit of quantification were imputed as LLOQ divided by 2.

Total Ang-2 concentrations were determined in plasma samples using an appropriate assay method. The lower limit of quantification (LLOQ) of the assay was 0.09 nanograms per millilitre (ng/mL). Plasma total Ang-2 concentrations below the limit of quantification were imputed as LLOQ divided by 2.

Free Ang-2 concentrations were determined in plasma samples using an appropriate assay method. The lower limit of quantification (LLOQ) of the assay was 0.9 nanograms per millilitre (ng/mL). Plasma free Ang-2 concentrations below the limit of quantification were imputed as LLOQ divided by 2.