Skip to content

A Phase 2b Diabetic Kidney Disease Study

A Phase 2b Randomized, Double-blind, Placebo-controlled, Study to Evaluate the Efficacy and Safety of MEDI3506 in Subjects With Diabetic Kidney Disease

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04170543
Enrollment
609
Registered
2019-11-20
Start date
2019-11-18
Completion date
2023-05-16
Last updated
2024-07-10

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

Conditions

Diabetic Kidney Disease

Brief summary

A Phase 2b Randomized, Double-blind, Placebo-controlled, Study to Evaluate the Efficacy and Safety of MEDI3506 in Subjects with Diabetic Kidney Disease

Detailed description

This is a Phase 2b, randomized, double-blind, placebo-controlled, multicenter study to evaluate the efficacy, safety, PK, and immunogenicity of MEDI3506 on top of standard of care, including angiotensin-converting enzyme (ACE) inhibitors or angiotensin receptor blockers (ARBs) and dapagliflozin in adult subjects with diabetic kidney disease, defined as subjects with type 2 diabetes mellitus (T2DM) and an estimated glomerular filtration rate (eGFR) of 25-75 mL/min/1.73 m2 with a UACR in the range of 100-3000 mg/g, who meet all eligibility criteria. Approximately 565 subjects, among multiple countries will be randomized to MEDI3506 dose 1, 2, 3 or dose 4, or placebo during a treatment period of 24 weeks. All subjects will receive Dapagliflozin daily, as administered orally from Day 85 to Day 168. The primary objective is to evaluate the effect of MEDI3506 on albuminuria in subjects with DKD. Secondary objectives include evaluating safety, PK and the incidence of ADA during the treatment period.

Interventions

Dose 1, Dose 2, Dose 3, Dose 4

DRUGPlacebo

Placebo

DRUGDapagliflozin

Dapagliflozin 10 mg

Sponsors

AstraZeneca
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Masking description

This is a double-blinded study in which MEDI3506 and placebo. Neither the subject nor any of the investigator or sponsor staff who are involved in the treatment or clinical evaluation of the subjects will be aware of the treatment received.

Intervention model description

Eligible subjects will be randomized to receive MEDI3506 or placebo as follows: Group 1: MEDI3506 Dose 1. Group 2: MEDI3506 Dose 2. Group 3: MEDI3506 Dose 3 Group 4: MEDI3506 Dose 4 Group 5: Placebo (volume matched) All subjects will receive Dapa from Day 85 to Day 168.

Eligibility

Sex/Gender
ALL
Age
18 Years to 101 Years
Healthy volunteers
No

Inclusion criteria

Key Inclusion Criteria 1. Adult men or women ≥ 18 years of age. 2. Diabetic kidney disease DKD defined as: 1. diagnosis of T2DM 2. eGFR 25-75 mL/min/1.73 m2 3. UACR 100-3000 mg albumin/g creatinine 3. BP ≤ 150/100 mmHg 4. Stable dose of ACEi or ARB Key

Exclusion criteria

1\. Serum potassium \> 5.5 mmol/L 2. Significant hepatic disease 3. Hemoglobin A1c \> 10.5 % 4. B-type natriuretic peptide level \> 200 pg/mL 5. History of clinically significant heart disease 6. Anticipated dialysis or renal transplantation within 1 year 7. History of underlying condition that predisposes the subject to infections 8. Significant infection (viral, bacterial, or fungal) 9. Amputation due to peripheral artery disease 10. Subjects with a positive diagnostic nucleic acid test for SARS-CoV-2 11. Pregnancy, breastfeeding or intention to become pregnant during the course of the study, 12. Any other medical condition or clinically relevant abnormal findings in physical examination, laboratory results, or electrocardiogram (ECG) during screening that, in the opinion of the investigator, may compromise the safety of the subject in the study, reduce the subject's ability to participate in the study, or interfere with evaluation of the investigational product

Design outcomes

Primary

MeasureTime frameDescription
Percent Change From Baseline to Day 169 (Week 24) in UACR - Per Protocol PopulationFrom baseline to Day 169UACR values are collected as triplicates at baseline and at each CSP planned visit. For each triplicate, the UACR are averaged with geometric mean. Baseline is defined as the geometric mean of UACR measurements prior to first dose of study treatment. For the intercurrent events, if a subject is lost to follow-up (EOT), discontinues treatment due to AE, or uses prohibited medication, the UACR data are treated as missing on or after the event and no imputation is performed. The LS means of percent change and difference in percent change, corresponding 90% confidence intervals are calculated based on a mixed model with repeated measures (MMRM) of log (UACR post-baseline/UACR baseline) as the response, adjusting for fixed effects of treatment, visit, and treatment-by-visit interaction, SGLT2i, region (Japan or ROW), baseline log UACR, and baseline log UACR-by-visit interaction. The MMRM includes UACR values at protocol specified visits from baseline up to Day 169.

Secondary

MeasureTime frameDescription
Percent Change From Day 85 (Week 12) to Day 169 (Week 24) in UACR - Per Protocol PopulationFrom Day 85 to Day 169UACR values are collected as triplicates at baseline and at each CSP planned visit. For each triplicate, the UACR are averaged with geometric mean. Baseline is defined as the geometric mean of UACR measurements prior to first dose of study treatment. For the intercurrent events, if a subject is lost to follow-up (EOT), discontinues treatment due to AE, or uses prohibited medication, the UACR data are treated as missing on or after the event and no imputation is performed. The LS means of percent change and difference in percent change, corresponding 90% confidence intervals are calculated based on a mixed model with repeated measures (MMRM) of log (UACR post-baseline/UACR baseline) as the response, adjusting for fixed effects of treatment, visit, and treatment-by-visit interaction, SGLT2i, region (Japan or ROW), baseline log UACR, and baseline log UACR-by-visit interaction. The MMRM includes UACR values at protocol specified visits from Day 85 up to Day 169.
Proportion of Subjects With Reduction in UACR at Day 169 (Week 24) - Per Protocol PopulationBaseline and Day 169UACR values are collected as triplicates at baseline and at each CSP planned visit. For each triplicate, the UACR are averaged with geometric mean. Baseline is defined as the geometric mean of UACR measurements prior to first dose of study treatment. Only participants with values at Baseline and Day 169 are included.
Percent Change From Baseline to Day 169 (Week 24) in UACR - Full Analysis PopulationFrom baseline to Day 169UACR values are collected as triplicates at baseline and at each CSP planned visit. For each triplicate, the UACR are averaged with geometric mean. Baseline is defined as the geometric mean of UACR measurements prior to first dose of study treatment. For the intercurrent events, if a subject is lost to follow-up (EOT), discontinues treatment due to AE, or uses prohibited medication, the UACR data are treated as missing on or after the event and no imputation is performed. The LS means of percent change and difference in percent change, corresponding 90% confidence intervals are calculated based on a mixed model with repeated measures (MMRM) of log (UACR post-baseline/UACR baseline) as the response, adjusting for fixed effects of treatment, visit, and treatment-by-visit interaction, SGLT2i, region (Japan or ROW), baseline log UACR, and baseline log UACR-by-visit interaction. The MMRM includes UACR values at protocol specified visits from baseline up to Day 169.
Treatment-emergent Adverse Events and Treatment-emergent Serious Adverse Events Among COVID-19 Positive Participants - Safety Analysis PopulationDay 1 to Day 230For participants tested positive for COVID-19 during the intervention and follow-up periods, this analysis provides: * the number and proportion of subjects with any treatment-emergent adverse event * the number and proportion of subjects with any treatment-emergent serious adverse event
Percent Change From Baseline to Day 85 (Week 12) in UACR - Per Protocol PopulationFrom baseline to Day 85UACR values are collected as triplicates at baseline and at each CSP planned visit. For each triplicate, the UACR are averaged with geometric mean. Baseline is defined as the geometric mean of UACR measurements prior to first dose of study treatment. For the intercurrent events, if a subject is lost to follow-up (EOT), discontinues treatment due to AE, or uses prohibited medication, the UACR data are treated as missing on or after the event and no imputation is performed. The LS means of percent change and difference in percent change, corresponding 90% confidence intervals are calculated based on a mixed model with repeated measures (MMRM) of log (UACR post-baseline/UACR baseline) as the response, adjusting for fixed effects of treatment, visit, and treatment-by-visit interaction, SGLT2i, region (Japan or ROW), baseline log UACR, and baseline log UACR-by-visit interaction. The MMRM includes UACR values at protocol specified visits from baseline up to Day 169.
Proportion of Subjects With Reduction in UACR at Day 169 (Week 24) - Full Analysis PopulationBaseline and Day 169UACR values are collected as triplicates at baseline and at each CSP planned visit. For each triplicate, the UACR are averaged with geometric mean. Baseline is defined as the geometric mean of UACR measurements prior to first dose of study treatment. Only participants with values at Baseline and Day 169 are included.
Immunogenicity of MEDI3506 - PK Analysis PopulationDay 1 to Day 230ADA prevalence: number of participants ADA positive (ADA+) at baseline and/or post-baseline. Treatment-induced ADA+: ADA not detected or missing at baseline and at least one post-baseline ADA+. Treatment-boosted ADA+: ADA+ at baseline and baseline titre is boosted by ≥ 4-fold increase at ≥ 1 post-baseline time point. Treatment-emergent ADA+ (TE-ADA + or ADA incidence): Treatment-induced ADA+ OR and Treatment-boosted ADA+.
Asymptomatic Participants Tested Positive for COVID-19 During the Study - Safety Analysis PopulationDay 1 to Day 230Participants were tested for COVID-19 during the course of the study. Descriptive analysis of asymptomatic participants tested positive for COVID-19 during the study.
Percent Change From Baseline to Day 85 (Week 12) in UACR - Full Analysis PopulationFrom baseline to Day 85UACR values are collected as triplicates at baseline and at each CSP planned visit. For each triplicate, the UACR are averaged with geometric mean. Baseline is defined as the geometric mean of UACR measurements prior to first dose of study treatment. For the intercurrent events, if a subject is lost to follow-up (EOT), discontinues treatment due to AE, or uses prohibited medication, the UACR data are treated as missing on or after the event and no imputation is performed. The LS means of percent change and difference in percent change, corresponding 90% confidence intervals are calculated based on a mixed model with repeated measures (MMRM) of log (UACR post-baseline/UACR baseline) as the response, adjusting for fixed effects of treatment, visit, and treatment-by-visit interaction, SGLT2i, region (Japan or ROW), baseline log UACR, and baseline log UACR-by-visit interaction. The MMRM includes UACR values at protocol specified visits from baseline up to Day 169.

Other

MeasureTime frameDescription
Plasma Concentration of MEDI3506 - PK Analysis PopulationDay 1, Day 29, Day 85 and Day 169MEDI3506/Tozorakimab serum concentrations were measured using a validated assay method.

Countries

Argentina, Canada, Chile, Japan, Peru, South Korea, United States

Participant flow

Pre-assignment details

The following data were excluded from this analysis: * Data from patients enrolled in Phase 2a of the study: This phase was discontinued due to the COVID-19 pandemic. * Data from patients enrolled at a site that was discovered to not follow Good Clinical Practice (GCP) guidelines. * Data from patients not treated.

Participants by arm

ArmCount
Placebo
Participants were randomized to receive Placebo
133
MEDI3506 30 mg
Participants were randomized to receive tozorakimab 30 mg
95
MEDI3506 60 mg
Participants were randomized to receive tozorakimab 60 mg
89
MEDI3506 120 mg
Participants were randomized to receive tozorakimab 120 mg
93
MEDI3506 300 mg
Participants were randomized to receive tozorakimab 300 mg
148
Total558

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003FG004
Overall Study(CRF)1615121717
Overall StudyDeath11111
Overall StudyDue to COVID-19 Pandemic10100
Overall StudyEnrolled in Site with GCP Breach61224
Overall StudyLost to Follow-up33031
Overall StudyNot able to transition to phase 2b801006
Overall StudyNot Treated00002
Overall StudyWithdrawal by Subject136549

Baseline characteristics

CharacteristicPlaceboTotalMEDI3506 300 mgMEDI3506 120 mgMEDI3506 60 mgMEDI3506 30 mg
Age, Continuous66.7 years
STANDARD_DEVIATION 9.7
66.6 years
STANDARD_DEVIATION 9.9
65.9 years
STANDARD_DEVIATION 10.1
66.6 years
STANDARD_DEVIATION 9.7
67.2 years
STANDARD_DEVIATION 10.1
67.1 years
STANDARD_DEVIATION 9.8
Ethnicity (NIH/OMB)
Ethnicity
Hispanic or Latino
61 Participants288 Participants81 Participants53 Participants31 Participants62 Participants
Ethnicity (NIH/OMB)
Ethnicity
Not Hispanic or Latino
72 Participants270 Participants67 Participants40 Participants58 Participants33 Participants
Ethnicity (NIH/OMB)
Ethnicity
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Race
American Indian or Alaska Native
2 Participants12 Participants4 Participants1 Participants0 Participants5 Participants
Race (NIH/OMB)
Race
Asian
29 Participants114 Participants29 Participants17 Participants24 Participants15 Participants
Race (NIH/OMB)
Race
Black or African American
16 Participants48 Participants13 Participants4 Participants9 Participants6 Participants
Race (NIH/OMB)
Race
More than one race
1 Participants1 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Race
Native Hawaiian or Other Pacific Islander
1 Participants8 Participants2 Participants1 Participants3 Participants1 Participants
Race (NIH/OMB)
Race
Unknown or Not Reported
3 Participants11 Participants4 Participants4 Participants0 Participants0 Participants
Race (NIH/OMB)
Race
White
81 Participants364 Participants96 Participants66 Participants53 Participants68 Participants
Region of Enrollment
Argentina
20 Participants113 Participants25 Participants28 Participants12 Participants28 Participants
Region of Enrollment
Canada
4 Participants21 Participants6 Participants2 Participants7 Participants2 Participants
Region of Enrollment
Chile
13 Participants53 Participants17 Participants9 Participants2 Participants12 Participants
Region of Enrollment
Japan
20 Participants75 Participants18 Participants11 Participants15 Participants11 Participants
Region of Enrollment
Korea, Republic of; South Korea
4 Participants15 Participants3 Participants3 Participants2 Participants3 Participants
Region of Enrollment
Peru
0 Participants7 Participants4 Participants0 Participants0 Participants3 Participants
Region of Enrollment
United States
72 Participants274 Participants75 Participants40 Participants51 Participants36 Participants
Sex: Female, Male
Sex
Female
46 Participants169 Participants43 Participants24 Participants23 Participants33 Participants
Sex: Female, Male
Sex
Male
87 Participants389 Participants105 Participants69 Participants66 Participants62 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
deaths
Total, all-cause mortality
1 / 1331 / 951 / 891 / 931 / 148
other
Total, other adverse events
62 / 13355 / 9539 / 8948 / 9374 / 148
serious
Total, serious adverse events
15 / 13314 / 955 / 8912 / 9311 / 148

Outcome results

Primary

Percent Change From Baseline to Day 169 (Week 24) in UACR - Per Protocol Population

UACR values are collected as triplicates at baseline and at each CSP planned visit. For each triplicate, the UACR are averaged with geometric mean. Baseline is defined as the geometric mean of UACR measurements prior to first dose of study treatment. For the intercurrent events, if a subject is lost to follow-up (EOT), discontinues treatment due to AE, or uses prohibited medication, the UACR data are treated as missing on or after the event and no imputation is performed. The LS means of percent change and difference in percent change, corresponding 90% confidence intervals are calculated based on a mixed model with repeated measures (MMRM) of log (UACR post-baseline/UACR baseline) as the response, adjusting for fixed effects of treatment, visit, and treatment-by-visit interaction, SGLT2i, region (Japan or ROW), baseline log UACR, and baseline log UACR-by-visit interaction. The MMRM includes UACR values at protocol specified visits from baseline up to Day 169.

Time frame: From baseline to Day 169

Population: Per Protocol Population:~All randomized participants who received any study drug and did not violate any relevant important protocol deviations affecting the primary efficacy endpoint.

ArmMeasureValue (LEAST_SQUARES_MEAN)
PlaceboPercent Change From Baseline to Day 169 (Week 24) in UACR - Per Protocol Population-14.82 Percentage change from baseline
MEDI3506 30 mgPercent Change From Baseline to Day 169 (Week 24) in UACR - Per Protocol Population-17.25 Percentage change from baseline
MEDI3506 60 mgPercent Change From Baseline to Day 169 (Week 24) in UACR - Per Protocol Population-31.45 Percentage change from baseline
MEDI3506 120 mgPercent Change From Baseline to Day 169 (Week 24) in UACR - Per Protocol Population-29.70 Percentage change from baseline
MEDI3506 300 mgPercent Change From Baseline to Day 169 (Week 24) in UACR - Per Protocol Population-20.96 Percentage change from baseline
p-value: 0.833890% CI: [-22.61, 21.94]MMRM
p-value: 0.116990% CI: [-35.92, 1.07]MMRM
p-value: 0.177490% CI: [-34.71, 4.32]MMRM
p-value: 0.537990% CI: [-24.05, 13.35]MMRM
Secondary

Asymptomatic Participants Tested Positive for COVID-19 During the Study - Safety Analysis Population

Participants were tested for COVID-19 during the course of the study. Descriptive analysis of asymptomatic participants tested positive for COVID-19 during the study.

Time frame: Day 1 to Day 230

Population: Safety Analysis Population:~All randomized participants who received any study drug.~Subset of participants tested positive for COVID-19 during the study.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
PlaceboAsymptomatic Participants Tested Positive for COVID-19 During the Study - Safety Analysis Population79 Participants
MEDI3506 30 mgAsymptomatic Participants Tested Positive for COVID-19 During the Study - Safety Analysis Population54 Participants
MEDI3506 60 mgAsymptomatic Participants Tested Positive for COVID-19 During the Study - Safety Analysis Population50 Participants
MEDI3506 120 mgAsymptomatic Participants Tested Positive for COVID-19 During the Study - Safety Analysis Population53 Participants
MEDI3506 300 mgAsymptomatic Participants Tested Positive for COVID-19 During the Study - Safety Analysis Population70 Participants
Secondary

Immunogenicity of MEDI3506 - PK Analysis Population

ADA prevalence: number of participants ADA positive (ADA+) at baseline and/or post-baseline. Treatment-induced ADA+: ADA not detected or missing at baseline and at least one post-baseline ADA+. Treatment-boosted ADA+: ADA+ at baseline and baseline titre is boosted by ≥ 4-fold increase at ≥ 1 post-baseline time point. Treatment-emergent ADA+ (TE-ADA + or ADA incidence): Treatment-induced ADA+ OR and Treatment-boosted ADA+.

Time frame: Day 1 to Day 230

Population: PK Analysis Population:~All subjects who are randomized and receive any study drug who have at least one detectable MEDI3506 serum concentration measurement post-treatment.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
PlaceboImmunogenicity of MEDI3506 - PK Analysis PopulationTreatment-induced ADA+1 Participants
PlaceboImmunogenicity of MEDI3506 - PK Analysis PopulationTreatment-emergent ADA+ (Treatment-induced ADA+ or Treatment-boosted ADA+)1 Participants
PlaceboImmunogenicity of MEDI3506 - PK Analysis PopulationTreatment-boosted ADA+0 Participants
MEDI3506 30 mgImmunogenicity of MEDI3506 - PK Analysis PopulationTreatment-boosted ADA+1 Participants
MEDI3506 30 mgImmunogenicity of MEDI3506 - PK Analysis PopulationTreatment-induced ADA+6 Participants
MEDI3506 30 mgImmunogenicity of MEDI3506 - PK Analysis PopulationTreatment-emergent ADA+ (Treatment-induced ADA+ or Treatment-boosted ADA+)7 Participants
MEDI3506 60 mgImmunogenicity of MEDI3506 - PK Analysis PopulationTreatment-boosted ADA+0 Participants
MEDI3506 60 mgImmunogenicity of MEDI3506 - PK Analysis PopulationTreatment-induced ADA+10 Participants
MEDI3506 60 mgImmunogenicity of MEDI3506 - PK Analysis PopulationTreatment-emergent ADA+ (Treatment-induced ADA+ or Treatment-boosted ADA+)10 Participants
MEDI3506 120 mgImmunogenicity of MEDI3506 - PK Analysis PopulationTreatment-induced ADA+12 Participants
MEDI3506 120 mgImmunogenicity of MEDI3506 - PK Analysis PopulationTreatment-emergent ADA+ (Treatment-induced ADA+ or Treatment-boosted ADA+)12 Participants
MEDI3506 120 mgImmunogenicity of MEDI3506 - PK Analysis PopulationTreatment-boosted ADA+0 Participants
MEDI3506 300 mgImmunogenicity of MEDI3506 - PK Analysis PopulationTreatment-boosted ADA+2 Participants
MEDI3506 300 mgImmunogenicity of MEDI3506 - PK Analysis PopulationTreatment-induced ADA+12 Participants
MEDI3506 300 mgImmunogenicity of MEDI3506 - PK Analysis PopulationTreatment-emergent ADA+ (Treatment-induced ADA+ or Treatment-boosted ADA+)14 Participants
Secondary

Percent Change From Baseline to Day 169 (Week 24) in UACR - Full Analysis Population

UACR values are collected as triplicates at baseline and at each CSP planned visit. For each triplicate, the UACR are averaged with geometric mean. Baseline is defined as the geometric mean of UACR measurements prior to first dose of study treatment. For the intercurrent events, if a subject is lost to follow-up (EOT), discontinues treatment due to AE, or uses prohibited medication, the UACR data are treated as missing on or after the event and no imputation is performed. The LS means of percent change and difference in percent change, corresponding 90% confidence intervals are calculated based on a mixed model with repeated measures (MMRM) of log (UACR post-baseline/UACR baseline) as the response, adjusting for fixed effects of treatment, visit, and treatment-by-visit interaction, SGLT2i, region (Japan or ROW), baseline log UACR, and baseline log UACR-by-visit interaction. The MMRM includes UACR values at protocol specified visits from baseline up to Day 169.

Time frame: From baseline to Day 169

Population: Full Analysis Population:~All randomized participants who received any study drug.

ArmMeasureValue (LEAST_SQUARES_MEAN)
PlaceboPercent Change From Baseline to Day 169 (Week 24) in UACR - Full Analysis Population-15.82 Percentage change from baseline
MEDI3506 30 mgPercent Change From Baseline to Day 169 (Week 24) in UACR - Full Analysis Population-13.77 Percentage change from baseline
MEDI3506 60 mgPercent Change From Baseline to Day 169 (Week 24) in UACR - Full Analysis Population-28.98 Percentage change from baseline
MEDI3506 120 mgPercent Change From Baseline to Day 169 (Week 24) in UACR - Full Analysis Population-30.94 Percentage change from baseline
MEDI3506 300 mgPercent Change From Baseline to Day 169 (Week 24) in UACR - Full Analysis Population-21.19 Percentage change from baseline
p-value: 0.853790% CI: [-17.35, 26.95]MMRM
p-value: 0.198990% CI: [-32.14, 4.89]MMRM
p-value: 0.134690% CI: [-34.01, 1.99]MMRM
p-value: 0.568390% CI: [-22.59, 13.23]MMRM
Secondary

Percent Change From Baseline to Day 85 (Week 12) in UACR - Full Analysis Population

UACR values are collected as triplicates at baseline and at each CSP planned visit. For each triplicate, the UACR are averaged with geometric mean. Baseline is defined as the geometric mean of UACR measurements prior to first dose of study treatment. For the intercurrent events, if a subject is lost to follow-up (EOT), discontinues treatment due to AE, or uses prohibited medication, the UACR data are treated as missing on or after the event and no imputation is performed. The LS means of percent change and difference in percent change, corresponding 90% confidence intervals are calculated based on a mixed model with repeated measures (MMRM) of log (UACR post-baseline/UACR baseline) as the response, adjusting for fixed effects of treatment, visit, and treatment-by-visit interaction, SGLT2i, region (Japan or ROW), baseline log UACR, and baseline log UACR-by-visit interaction. The MMRM includes UACR values at protocol specified visits from baseline up to Day 169.

Time frame: From baseline to Day 85

Population: Full Analysis Population:~All randomized participants who received any study drug.

ArmMeasureValue (LEAST_SQUARES_MEAN)
PlaceboPercent Change From Baseline to Day 85 (Week 12) in UACR - Full Analysis Population16.86 Percentage change from baseline
MEDI3506 30 mgPercent Change From Baseline to Day 85 (Week 12) in UACR - Full Analysis Population7.59 Percentage change from baseline
MEDI3506 60 mgPercent Change From Baseline to Day 85 (Week 12) in UACR - Full Analysis Population-7.23 Percentage change from baseline
MEDI3506 120 mgPercent Change From Baseline to Day 85 (Week 12) in UACR - Full Analysis Population-5.03 Percentage change from baseline
MEDI3506 300 mgPercent Change From Baseline to Day 85 (Week 12) in UACR - Full Analysis Population1.35 Percentage change from baseline
p-value: 0.422690% CI: [-22.3, 9.1]MMRM
p-value: 0.028790% CI: [-33.25, -5.58]MMRM
p-value: 0.049890% CI: [-31.7, -3.3]MMRM
p-value: 0.123690% CI: [-25.51, 0.98]MMRM
Secondary

Percent Change From Baseline to Day 85 (Week 12) in UACR - Per Protocol Population

UACR values are collected as triplicates at baseline and at each CSP planned visit. For each triplicate, the UACR are averaged with geometric mean. Baseline is defined as the geometric mean of UACR measurements prior to first dose of study treatment. For the intercurrent events, if a subject is lost to follow-up (EOT), discontinues treatment due to AE, or uses prohibited medication, the UACR data are treated as missing on or after the event and no imputation is performed. The LS means of percent change and difference in percent change, corresponding 90% confidence intervals are calculated based on a mixed model with repeated measures (MMRM) of log (UACR post-baseline/UACR baseline) as the response, adjusting for fixed effects of treatment, visit, and treatment-by-visit interaction, SGLT2i, region (Japan or ROW), baseline log UACR, and baseline log UACR-by-visit interaction. The MMRM includes UACR values at protocol specified visits from baseline up to Day 169.

Time frame: From baseline to Day 85

Population: Per Protocol Population:~All randomized participants who received any study drug and did not violate any relevant important protocol deviations affecting the primary efficacy endpoint.

ArmMeasureValue (LEAST_SQUARES_MEAN)
PlaceboPercent Change From Baseline to Day 85 (Week 12) in UACR - Per Protocol Population21.60 Percentage change from baseline
MEDI3506 30 mgPercent Change From Baseline to Day 85 (Week 12) in UACR - Per Protocol Population5.77 Percentage change from baseline
MEDI3506 60 mgPercent Change From Baseline to Day 85 (Week 12) in UACR - Per Protocol Population-9.66 Percentage change from baseline
MEDI3506 120 mgPercent Change From Baseline to Day 85 (Week 12) in UACR - Per Protocol Population-0.53 Percentage change from baseline
MEDI3506 300 mgPercent Change From Baseline to Day 85 (Week 12) in UACR - Per Protocol Population2.69 Percentage change from baseline
p-value: 0.192990% CI: [-27.08, 3.75]MMRM
p-value: 0.006290% CI: [-37.83, -11.22]MMRM
p-value: 0.070590% CI: [-31.86, -1.81]MMRM
p-value: 0.076490% CI: [-27.82, -1.21]MMRM
Secondary

Percent Change From Day 85 (Week 12) to Day 169 (Week 24) in UACR - Per Protocol Population

UACR values are collected as triplicates at baseline and at each CSP planned visit. For each triplicate, the UACR are averaged with geometric mean. Baseline is defined as the geometric mean of UACR measurements prior to first dose of study treatment. For the intercurrent events, if a subject is lost to follow-up (EOT), discontinues treatment due to AE, or uses prohibited medication, the UACR data are treated as missing on or after the event and no imputation is performed. The LS means of percent change and difference in percent change, corresponding 90% confidence intervals are calculated based on a mixed model with repeated measures (MMRM) of log (UACR post-baseline/UACR baseline) as the response, adjusting for fixed effects of treatment, visit, and treatment-by-visit interaction, SGLT2i, region (Japan or ROW), baseline log UACR, and baseline log UACR-by-visit interaction. The MMRM includes UACR values at protocol specified visits from Day 85 up to Day 169.

Time frame: From Day 85 to Day 169

Population: Per Protocol Population:~All randomized participants who received any study drug and did not violate any relevant important protocol deviations affecting the primary efficacy endpoint.

ArmMeasureValue (LEAST_SQUARES_MEAN)
PlaceboPercent Change From Day 85 (Week 12) to Day 169 (Week 24) in UACR - Per Protocol Population-23.26 Percentage change from baseline
MEDI3506 30 mgPercent Change From Day 85 (Week 12) to Day 169 (Week 24) in UACR - Per Protocol Population-17.69 Percentage change from baseline
MEDI3506 60 mgPercent Change From Day 85 (Week 12) to Day 169 (Week 24) in UACR - Per Protocol Population-20.87 Percentage change from baseline
MEDI3506 120 mgPercent Change From Day 85 (Week 12) to Day 169 (Week 24) in UACR - Per Protocol Population-25.87 Percentage change from baseline
MEDI3506 300 mgPercent Change From Day 85 (Week 12) to Day 169 (Week 24) in UACR - Per Protocol Population-19.21 Percentage change from baseline
p-value: 0.547490% CI: [-11.45, 29.88]MMRM
p-value: 0.79290% CI: [-14.83, 24.82]MMRM
p-value: 0.771190% CI: [-20.59, 17.51]MMRM
p-value: 0.616390% CI: [-11.08, 24.62]MMRM
Secondary

Proportion of Subjects With Reduction in UACR at Day 169 (Week 24) - Full Analysis Population

UACR values are collected as triplicates at baseline and at each CSP planned visit. For each triplicate, the UACR are averaged with geometric mean. Baseline is defined as the geometric mean of UACR measurements prior to first dose of study treatment. Only participants with values at Baseline and Day 169 are included.

Time frame: Baseline and Day 169

Population: Full Analysis Population:~All randomized participants who received any study drug.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
PlaceboProportion of Subjects With Reduction in UACR at Day 169 (Week 24) - Full Analysis PopulationUACR reduction > 50%26 Participants
PlaceboProportion of Subjects With Reduction in UACR at Day 169 (Week 24) - Full Analysis PopulationUACR reduction > 40%37 Participants
PlaceboProportion of Subjects With Reduction in UACR at Day 169 (Week 24) - Full Analysis PopulationUACR reduction > 30%49 Participants
MEDI3506 30 mgProportion of Subjects With Reduction in UACR at Day 169 (Week 24) - Full Analysis PopulationUACR reduction > 30%36 Participants
MEDI3506 30 mgProportion of Subjects With Reduction in UACR at Day 169 (Week 24) - Full Analysis PopulationUACR reduction > 40%25 Participants
MEDI3506 30 mgProportion of Subjects With Reduction in UACR at Day 169 (Week 24) - Full Analysis PopulationUACR reduction > 50%18 Participants
MEDI3506 60 mgProportion of Subjects With Reduction in UACR at Day 169 (Week 24) - Full Analysis PopulationUACR reduction > 40%23 Participants
MEDI3506 60 mgProportion of Subjects With Reduction in UACR at Day 169 (Week 24) - Full Analysis PopulationUACR reduction > 50%19 Participants
MEDI3506 60 mgProportion of Subjects With Reduction in UACR at Day 169 (Week 24) - Full Analysis PopulationUACR reduction > 30%28 Participants
MEDI3506 120 mgProportion of Subjects With Reduction in UACR at Day 169 (Week 24) - Full Analysis PopulationUACR reduction > 40%32 Participants
MEDI3506 120 mgProportion of Subjects With Reduction in UACR at Day 169 (Week 24) - Full Analysis PopulationUACR reduction > 30%41 Participants
MEDI3506 120 mgProportion of Subjects With Reduction in UACR at Day 169 (Week 24) - Full Analysis PopulationUACR reduction > 50%26 Participants
MEDI3506 300 mgProportion of Subjects With Reduction in UACR at Day 169 (Week 24) - Full Analysis PopulationUACR reduction > 40%48 Participants
MEDI3506 300 mgProportion of Subjects With Reduction in UACR at Day 169 (Week 24) - Full Analysis PopulationUACR reduction > 50%38 Participants
MEDI3506 300 mgProportion of Subjects With Reduction in UACR at Day 169 (Week 24) - Full Analysis PopulationUACR reduction > 30%62 Participants
Secondary

Proportion of Subjects With Reduction in UACR at Day 169 (Week 24) - Per Protocol Population

UACR values are collected as triplicates at baseline and at each CSP planned visit. For each triplicate, the UACR are averaged with geometric mean. Baseline is defined as the geometric mean of UACR measurements prior to first dose of study treatment. Only participants with values at Baseline and Day 169 are included.

Time frame: Baseline and Day 169

Population: Per Protocol Population:~All randomized participants who received any study drug and did not violate any relevant important protocol deviations affecting the primary efficacy endpoint.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
PlaceboProportion of Subjects With Reduction in UACR at Day 169 (Week 24) - Per Protocol PopulationUACR reduction > 30%43 Participants
PlaceboProportion of Subjects With Reduction in UACR at Day 169 (Week 24) - Per Protocol PopulationUACR reduction > 40%33 Participants
PlaceboProportion of Subjects With Reduction in UACR at Day 169 (Week 24) - Per Protocol PopulationUACR reduction > 50%22 Participants
MEDI3506 30 mgProportion of Subjects With Reduction in UACR at Day 169 (Week 24) - Per Protocol PopulationUACR reduction > 30%34 Participants
MEDI3506 30 mgProportion of Subjects With Reduction in UACR at Day 169 (Week 24) - Per Protocol PopulationUACR reduction > 50%17 Participants
MEDI3506 30 mgProportion of Subjects With Reduction in UACR at Day 169 (Week 24) - Per Protocol PopulationUACR reduction > 40%23 Participants
MEDI3506 60 mgProportion of Subjects With Reduction in UACR at Day 169 (Week 24) - Per Protocol PopulationUACR reduction > 30%28 Participants
MEDI3506 60 mgProportion of Subjects With Reduction in UACR at Day 169 (Week 24) - Per Protocol PopulationUACR reduction > 50%19 Participants
MEDI3506 60 mgProportion of Subjects With Reduction in UACR at Day 169 (Week 24) - Per Protocol PopulationUACR reduction > 40%23 Participants
MEDI3506 120 mgProportion of Subjects With Reduction in UACR at Day 169 (Week 24) - Per Protocol PopulationUACR reduction > 40%29 Participants
MEDI3506 120 mgProportion of Subjects With Reduction in UACR at Day 169 (Week 24) - Per Protocol PopulationUACR reduction > 30%38 Participants
MEDI3506 120 mgProportion of Subjects With Reduction in UACR at Day 169 (Week 24) - Per Protocol PopulationUACR reduction > 50%23 Participants
MEDI3506 300 mgProportion of Subjects With Reduction in UACR at Day 169 (Week 24) - Per Protocol PopulationUACR reduction > 50%35 Participants
MEDI3506 300 mgProportion of Subjects With Reduction in UACR at Day 169 (Week 24) - Per Protocol PopulationUACR reduction > 30%59 Participants
MEDI3506 300 mgProportion of Subjects With Reduction in UACR at Day 169 (Week 24) - Per Protocol PopulationUACR reduction > 40%45 Participants
Secondary

Treatment-emergent Adverse Events and Treatment-emergent Serious Adverse Events Among COVID-19 Positive Participants - Safety Analysis Population

For participants tested positive for COVID-19 during the intervention and follow-up periods, this analysis provides: * the number and proportion of subjects with any treatment-emergent adverse event * the number and proportion of subjects with any treatment-emergent serious adverse event

Time frame: Day 1 to Day 230

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
PlaceboTreatment-emergent Adverse Events and Treatment-emergent Serious Adverse Events Among COVID-19 Positive Participants - Safety Analysis PopulationAny serious adverse event11 Participants
PlaceboTreatment-emergent Adverse Events and Treatment-emergent Serious Adverse Events Among COVID-19 Positive Participants - Safety Analysis PopulationAny adverse event47 Participants
MEDI3506 30 mgTreatment-emergent Adverse Events and Treatment-emergent Serious Adverse Events Among COVID-19 Positive Participants - Safety Analysis PopulationAny adverse event35 Participants
MEDI3506 30 mgTreatment-emergent Adverse Events and Treatment-emergent Serious Adverse Events Among COVID-19 Positive Participants - Safety Analysis PopulationAny serious adverse event9 Participants
MEDI3506 60 mgTreatment-emergent Adverse Events and Treatment-emergent Serious Adverse Events Among COVID-19 Positive Participants - Safety Analysis PopulationAny serious adverse event1 Participants
MEDI3506 60 mgTreatment-emergent Adverse Events and Treatment-emergent Serious Adverse Events Among COVID-19 Positive Participants - Safety Analysis PopulationAny adverse event23 Participants
MEDI3506 120 mgTreatment-emergent Adverse Events and Treatment-emergent Serious Adverse Events Among COVID-19 Positive Participants - Safety Analysis PopulationAny adverse event30 Participants
MEDI3506 120 mgTreatment-emergent Adverse Events and Treatment-emergent Serious Adverse Events Among COVID-19 Positive Participants - Safety Analysis PopulationAny serious adverse event6 Participants
MEDI3506 300 mgTreatment-emergent Adverse Events and Treatment-emergent Serious Adverse Events Among COVID-19 Positive Participants - Safety Analysis PopulationAny serious adverse event3 Participants
MEDI3506 300 mgTreatment-emergent Adverse Events and Treatment-emergent Serious Adverse Events Among COVID-19 Positive Participants - Safety Analysis PopulationAny adverse event40 Participants
Other Pre-specified

Plasma Concentration of MEDI3506 - PK Analysis Population

MEDI3506/Tozorakimab serum concentrations were measured using a validated assay method.

Time frame: Day 1, Day 29, Day 85 and Day 169

Population: PK Analysis Population:~All subjects who are randomized and receive any study drug who have at least one detectable MEDI3506 serum concentration measurement post-treatment.

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
PlaceboPlasma Concentration of MEDI3506 - PK Analysis PopulationDay 290.01983 ng/mLGeometric Coefficient of Variation 533.3
PlaceboPlasma Concentration of MEDI3506 - PK Analysis PopulationDay 1690.02435 ng/mLGeometric Coefficient of Variation 919.4
PlaceboPlasma Concentration of MEDI3506 - PK Analysis PopulationDay 10.01063 ng/mLGeometric Coefficient of Variation 418.9
PlaceboPlasma Concentration of MEDI3506 - PK Analysis PopulationDay 850.02898 ng/mLGeometric Coefficient of Variation 711.3
MEDI3506 30 mgPlasma Concentration of MEDI3506 - PK Analysis PopulationDay 10.005232 ng/mLGeometric Coefficient of Variation 38.16
MEDI3506 30 mgPlasma Concentration of MEDI3506 - PK Analysis PopulationDay 290.2185 ng/mLGeometric Coefficient of Variation 110.3
MEDI3506 30 mgPlasma Concentration of MEDI3506 - PK Analysis PopulationDay 1690.2495 ng/mLGeometric Coefficient of Variation 132.2
MEDI3506 30 mgPlasma Concentration of MEDI3506 - PK Analysis PopulationDay 850.2754 ng/mLGeometric Coefficient of Variation 155.6
MEDI3506 60 mgPlasma Concentration of MEDI3506 - PK Analysis PopulationDay 290.4454 ng/mLGeometric Coefficient of Variation 144.4
MEDI3506 60 mgPlasma Concentration of MEDI3506 - PK Analysis PopulationDay 10.005261 ng/mLGeometric Coefficient of Variation 33.33
MEDI3506 60 mgPlasma Concentration of MEDI3506 - PK Analysis PopulationDay 1690.4231 ng/mLGeometric Coefficient of Variation 188.4
MEDI3506 60 mgPlasma Concentration of MEDI3506 - PK Analysis PopulationDay 850.4701 ng/mLGeometric Coefficient of Variation 140.1
MEDI3506 120 mgPlasma Concentration of MEDI3506 - PK Analysis PopulationDay 290.7036 ng/mLGeometric Coefficient of Variation 119.7
MEDI3506 120 mgPlasma Concentration of MEDI3506 - PK Analysis PopulationDay 10.005111 ng/mLGeometric Coefficient of Variation 12.3
MEDI3506 120 mgPlasma Concentration of MEDI3506 - PK Analysis PopulationDay 1690.7027 ng/mLGeometric Coefficient of Variation 200.1
MEDI3506 120 mgPlasma Concentration of MEDI3506 - PK Analysis PopulationDay 850.9547 ng/mLGeometric Coefficient of Variation 103.2
MEDI3506 300 mgPlasma Concentration of MEDI3506 - PK Analysis PopulationDay 291.884 ng/mLGeometric Coefficient of Variation 64.34
MEDI3506 300 mgPlasma Concentration of MEDI3506 - PK Analysis PopulationDay 10.005443 ng/mLGeometric Coefficient of Variation 79.38
MEDI3506 300 mgPlasma Concentration of MEDI3506 - PK Analysis PopulationDay 852.326 ng/mLGeometric Coefficient of Variation 80.1
MEDI3506 300 mgPlasma Concentration of MEDI3506 - PK Analysis PopulationDay 1692.402 ng/mLGeometric Coefficient of Variation 91.04

Source: ClinicalTrials.gov · Data processed: Feb 9, 2026