Comparison · NCT00410761-7903aed4
Vandetanib 300 mg vs Placebo: Biochemical Response Calcitonin (CTN)
Calculated by ConductScience from the counts the trial posted to ClinicalTrials.gov.
2 sourcestrial-comparisons-2026-03-23-0.1.0
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ConductScience Library. Vandetanib 300 mg vs Placebo: Biochemical Response Calcitonin (CTN). Trial comparisons, record NCT00410761-7903aed4. Release trial-comparisons-2026-03-23-0.1.0, 23 Mar 2026. https://conductscience.org/library/comparisons/NCT00410761-7903aed4
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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 | 0.693 | 0.63 | 0.749 | wilson | |
| Risk in group 2 | 0.03 | 0.0103 | 0.0845 | wilson | |
| Risk difference, group 1 minus group 2 | 0.663 | 0.58 | 0.722 | newcombe hybrid score | |
| Risk ratio, group 1 over group 2 | 23.1 | 7.55 | 70.6 | log | |
| Odds ratio, group 1 over group 2 | 72.9 | 22.3 | 238 | log | |
| Number needed to treat, for one more participant with the outcome on Vandetanib 300 mg than on Placebo | 1.51 | 1.39 | 1.72 | from the risk difference interval |
Source ClinicalTrials.gov
Groups2
Group 2 names the comparator: placebo.
| Group | Title | Description | With the outcome | Analysed | ClinicalTrials.gov code |
|---|---|---|---|---|---|
| Group 1 | Vandetanib 300 mg | Vandetanib (300 mg daily) | 160 | 231 | OG000 |
| Group 2 | Placebo | Placebo daily | 3 | 100 | OG001 |
Source ClinicalTrials.gov
Outcome
- Type
- SECONDARY
- Title
- Biochemical Response Calcitonin (CTN)
- Description
Best biochemical response was calculated from assessments at baseline and during treatment. Responders were those patients with a best biochemical response of CR or PR, confirmed by repeat assessments, which were to be performed no less than 4 weeks after the criteria for PR or CR were first met. CR and PR being defined according to level of CTN.
- Time frame
- Blood samples for analysis of CTN were taken at screening baseline (average of 0, 1, 4 and 8 hours), then every 4 weeks until discontinuation and 60 day follow up
- Population
Source ClinicalTrials.gov
Trial
- Title
- An Efficacy Study Comparing ZD6474 to Placebo in Medullary Thyroid Cancer
- NCT number
- NCT00410761
- Phases
- PHASE3
- Conditions
- Thyroid Cancer
- Interventions
- ZD6474 (Vandetanib)
- Lead sponsor
- Genzyme, a Sanofi Company
- Results first posted
- 2012-03-26
- Results on ClinicalTrials.gov
- https://clinicaltrials.gov/study/NCT00410761?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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