Comparison · NCT03201458-sae
Arm A (Atezolizumab) vs Arm B (Atezolizumab, Cobimetinib): serious adverse events
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. Arm A (Atezolizumab) vs Arm B (Atezolizumab, Cobimetinib): serious adverse events. Trial comparisons, record NCT03201458-sae. Release trial-comparisons-2026-03-23-0.1.0, 23 Mar 2026. https://conductscience.org/library/comparisons/NCT03201458-sae
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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 | 0.744 | 0.598 | 0.851 | wilson | |
| Risk in group 2 | 0.721 | 0.573 | 0.833 | wilson | |
| Risk difference, group 1 minus group 2 | 0.0233 | -0.161 | 0.205 | newcombe hybrid score | |
| Risk ratio, group 1 over group 2 | 1.03 | 0.799 | 1.33 | log | |
| Odds ratio, group 1 over group 2 | 1.13 | 0.433 | 2.93 | log | |
| Number needed to harm, for one more participant with a serious adverse event on Arm A (Atezolizumab) than on Arm B (Atezolizumab, Cobimetinib) | 43 | from the risk difference interval | the interval includes no difference |
Source ClinicalTrials.gov
Groups2
Neither group, or both, names a comparator, so the groups keep ClinicalTrials.gov's order.
| Group | Title | Description | With the outcome | Analysed | ClinicalTrials.gov code |
|---|---|---|---|---|---|
| Group 1 | Arm A (Atezolizumab) | Patients receive atezolizumab IV over 30-60 minutes on days 1 and 15. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity. | 32 | 43 | EG000 |
| Group 2 | Arm B (Atezolizumab, Cobimetinib) | Patients receive atezolizumab IV over 30-60 minutes on days 1 and 15 and cobimetinib PO QD on days 1-21. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity. | 31 | 43 | EG001 |
Source ClinicalTrials.gov
Harm
- What it counts
- Total, serious adverse events
- Time frame
- Up to 1 year
Source ClinicalTrials.gov
Trial
- Title
- Atezolizumab With or Without Cobimetinib in Treating Patients With Metastatic Bile Duct Cancer That Cannot Be Removed by Surgery or Gallbladder Cancer
- NCT number
- NCT03201458
- Phases
- PHASE2
- Conditions
- Gallbladder Carcinoma, Metastatic Cholangiocarcinoma, Stage III Intrahepatic Cholangiocarcinoma AJCC v8, Stage IV Intrahepatic Cholangiocarcinoma AJCC v8, Unresectable Cholangiocarcinoma
- Interventions
- Atezolizumab, Biopsy, Biospecimen Collection, Cobimetinib, Computed Tomography, Magnetic Resonance Imaging
- Lead sponsor
- National Cancer Institute (NCI)
- Results first posted
- 2023-07-11
- Results on ClinicalTrials.gov
- https://clinicaltrials.gov/study/NCT03201458?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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