Comparison · NCT03444870-fefe6071
China Extension - DBT Period: Gantenerumab vs China Extension - DBT Period: Placebo: China - DBT Period: Number of Participants With at Least One ARIA-E MRI Finding
Calculated by ConductScience from the counts the trial posted to ClinicalTrials.gov.
2 sourcestrial-comparisons-2026-03-23-0.1.0
Cite this record
ConductScience Library. China Extension - DBT Period: Gantenerumab vs China Extension - DBT Period: Placebo: China - DBT Period: Number of Participants With at Least One ARIA-E MRI Finding. Trial comparisons, record NCT03444870-fefe6071. Release trial-comparisons-2026-03-23-0.1.0, 23 Mar 2026. https://conductscience.org/library/comparisons/NCT03444870-fefe6071
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Measures6
Calculated by ConductScience from the counts the trial posted to ClinicalTrials.gov.
| Measure | Value | 95% interval, lower | 95% interval, upper | Method | Note |
|---|---|---|---|---|---|
| Risk in group 1 | 0.114 | 0.0454 | 0.26 | wilson | |
| Risk in group 2 | 0.0303 | 0.00537 | 0.153 | wilson | |
| Risk difference, group 1 minus group 2 | 0.084 | -0.0569 | 0.231 | newcombe hybrid score | |
| Risk ratio, group 1 over group 2 | 3.77 | 0.444 | 32 | log | |
| Odds ratio, group 1 over group 2 | 4.13 | 0.437 | 39 | log | |
| Number needed to treat, for one more participant with the outcome on China Extension - DBT Period: Gantenerumab than on China Extension - DBT Period: Placebo | 11.9 | from the risk difference interval | the interval includes no difference |
Source ClinicalTrials.gov
Groups2
Group 2 names the comparator: placebo.
| Group | Title | Description | With the outcome | Analysed | ClinicalTrials.gov code |
|---|---|---|---|---|---|
| Group 1 | China Extension - DBT Period: Gantenerumab | Participants received gantenerumab, SC injection with gradual up-titration starting at a dose of 120 mg, Q4W for 3 doses, followed by 255 mg, Q4W for 3 doses, and 510 mg, Q4W for 3 doses. Following this, from Week 36 onwards, participants received gantenerumab, SC injection at a dose of 510 mg, Q2W up to approximately 110 weeks of the DBT period. | 4 | 35 | OG001 |
| Group 2 | China Extension - DBT Period: Placebo | Participants received gantenerumab matching placebo, SC injection, Q4W up to Week 36 and then Q2W up to approximately 110 weeks of the DBT period. | 1 | 33 | OG000 |
Source ClinicalTrials.gov
Outcome
- Type
- SECONDARY
- Title
- China - DBT Period: Number of Participants With at Least One ARIA-E MRI Finding
- Description
ARIA are an identified risk with anti-amyloid antibodies, including gantenerumab. These changes can be identified on brain MRI. In ARIA-E, (E for oedema or effusion), oedema can be seen in different areas of the brain on MRI, representing fluid leakage into the brain parenchyma or sulcal spaces.
- Time frame
- From Day 1 up to 14 weeks after the last dose of blinded study drug (up to 124 weeks)
- Population
- SE analysis set (China) included all participants enrolled in China in the China extension phase who received at least one dose of study drug.
Source ClinicalTrials.gov
Trial
- Title
- Efficacy and Safety Study of Gantenerumab in Participants With Early Alzheimer's Disease (AD)
- NCT number
- NCT03444870
- Phases
- PHASE3
- Conditions
- Alzheimer Disease
- Interventions
- Gantenerumab, Placebo
- Lead sponsor
- Hoffmann-La Roche
- Results first posted
- 2024-01-30
- Results on ClinicalTrials.gov
- https://clinicaltrials.gov/study/NCT03444870?tab=results
Source ClinicalTrials.gov
Source
- Release
- trial-comparisons-2026-03-23-0.1.0
- Release manifest SHA-256
- f66225897fbf258b57ea10bdacfd0347d3cdfda93f7f5685234b7e06ea36fa57
- AACT copy
- 2026-03-23
- Tables read
- outcome_counts.parquet, outcome_measurements.parquet, outcomes.parquet, reported_event_totals.parquet, reported_events.parquet, result_groups.parquet, studies.parquet, ctgov_trial.parquet
Source ClinicalTrials.gov
Sources 2
- ClinicalTrials.gov's posted results, through CTTI's AACTFreely available. Acknowledgement requested
- ClinicalTrials.govNo license stated
Each source's terms
- ClinicalTrials.gov's posted results, through CTTI's AACTClinicalTrials.gov data via Aggregate Analysis of ClinicalTrials.gov (AACT), CTTI. CTTI makes its materials freely available and requests acknowledgement. https://aact.ctti-clinicaltrials.org/documentation/299
- ClinicalTrials.govnone stated
ClinicalTrials.gov's data carry an international copyright outside the United States: https://clinicaltrials.gov/about-site/terms-conditions. The measures are ConductScience's calculation from them.
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