TriangleNCT02294461 · OUTCOME
Time to Initiation of Cytotoxic Chemotherapy
Results reported by the registry submitting party. Population, time horizon, units and missing values must be read together.
- Measure
- MEDIAN
- Unit
- Months
- Interval / dispersion
- 95% Confidence Interval
- Time frame
- From the date of randomization to initiation of cytotoxic chemotherapy median follow-up time is 7.39 months for enzalutamide and 5.19 months for placebo
What was measured
Time to initiation of cytotoxic chemotherapy was defined as the time from randomization to initiation of cytotoxic chemotherapy. It included only therapies for prostate cancer. When multiple cytotoxic chemotherapies were initiated, the first chemotherapy was used to determine the time to event. Participants who did not start cytotoxic chemotherapy at the time of analysis data cutoff were censored at the date of their last assessment indicating no evidence of cytotoxic chemotherapy usage.
Analysis population: ITT population with available data.
Groups in this outcome
Enzalutamide
Participants received 160 mg of enzalutamide orally once a day during double blind period until PSA progression and radiographic disease progression were centrally confirmed and 1 of the following 2 events became applicable to the participants: (1) initiation of cytotoxic chemotherapy or (2) initiation of an investigational agent for treatment of prostate cancer (up to 29.4 months). Eligible participants who received enzalutamide during double blind and who provided consent to take part in open-label period continued to receive 160 mg of enzalutamide in open-label period orally once a day until PSA progression and radiographic disease progression were centrally confirmed and 1 of the following 2 events became applicable to the participants: (1) initiation of cytotoxic chemotherapy or (2) initiation of an investigational agent for treatment of prostate cancer (up to 54.3 months).
Placebo
Participants received enzalutamide matching placebo orally once a day during double-blind period until PSA progression and radiographic disease progression were centrally confirmed and 1 of the following 2 events became applicable to the participants: (1) initiation of cytotoxic chemotherapy or (2) initiation of an investigational agent for treatment of prostate cancer (up to 18.6 months).
| Group | Source count |
|---|---|
| Enzalutamide | 198 |
| Placebo | 190 |
Reported measurements
Source class 1
| Group | Value | Spread | Lower | Upper | Comment |
|---|---|---|---|---|---|
| Enzalutamide | NA | Not reported | NA | NA | Could not be estimated due to the low number of events |
| Placebo | 13.93 | Not reported | NA | NA | Could not be estimated due to the low number of events |
Source statistical analyses
- ci Lower Limit
- 0.12
- ci Pct Value
- 95
- ci Upper Limit
- 0.66
- group Description
- Participants who did not start cytotoxic chemotherapy were censored at the date of the last assessment indicating no evidence of cytotoxic chemotherapy usage. Hazard ratio calculated using unstratified Cox Proportional Hazards model with treatment as the only covariate for enzalutamide group versus placebo group.
- group Ids
- OG000
- OG001
- non Inferiority Type
- SUPERIORITY_OR_OTHER_LEGACY
- p Value
- 0.0020
- p Value Comment
- P-value is based on an unstratified log-rank test.
- param Type
- Hazard Ratio (HR)
- param Value
- 0.28
- statistical Method
- Unstratified log-rank test
Complete source fields
- analyses
- ci Lower Limit
- 0.12
- ci Pct Value
- 95
- ci Upper Limit
- 0.66
- group Description
- Participants who did not start cytotoxic chemotherapy were censored at the date of the last assessment indicating no evidence of cytotoxic chemotherapy usage. Hazard ratio calculated using unstratified Cox Proportional Hazards model with treatment as the only covariate for enzalutamide group versus placebo group.
- group Ids
- OG000
- OG001
- non Inferiority Type
- SUPERIORITY_OR_OTHER_LEGACY
- p Value
- 0.0020
- p Value Comment
- P-value is based on an unstratified log-rank test.
- param Type
- Hazard Ratio (HR)
- param Value
- 0.28
- statistical Method
- Unstratified log-rank test
- classes
- categories
- measurements
- comment
- Could not be estimated due to the low number of events
- group Id
- OG000
- lower Limit
- NA
- upper Limit
- NA
- value
- NA
- comment
- Could not be estimated due to the low number of events
- group Id
- OG001
- lower Limit
- NA
- upper Limit
- NA
- value
- 13.93
- denoms
- counts
- group Id
- OG000
- value
- 198
- group Id
- OG001
- value
- 190
- units
- Participants
- description
- Time to initiation of cytotoxic chemotherapy was defined as the time from randomization to initiation of cytotoxic chemotherapy. It included only therapies for prostate cancer. When multiple cytotoxic chemotherapies were initiated, the first chemotherapy was used to determine the time to event. Participants who did not start cytotoxic chemotherapy at the time of analysis data cutoff were censored at the date of their last assessment indicating no evidence of cytotoxic chemotherapy usage.
- dispersion Type
- 95% Confidence Interval
- groups
- description
- Participants received 160 mg of enzalutamide orally once a day during double blind period until PSA progression and radiographic disease progression were centrally confirmed and 1 of the following 2 events became applicable to the participants: (1) initiation of cytotoxic chemotherapy or (2) initiation of an investigational agent for treatment of prostate cancer (up to 29.4 months). Eligible participants who received enzalutamide during double blind and who provided consent to take part in open-label period continued to receive 160 mg of enzalutamide in open-label period orally once a day until PSA progression and radiographic disease progression were centrally confirmed and 1 of the following 2 events became applicable to the participants: (1) initiation of cytotoxic chemotherapy or (2) initiation of an investigational agent for treatment of prostate cancer (up to 54.3 months).
- id
- OG000
- title
- Enzalutamide
- description
- Participants received enzalutamide matching placebo orally once a day during double-blind period until PSA progression and radiographic disease progression were centrally confirmed and 1 of the following 2 events became applicable to the participants: (1) initiation of cytotoxic chemotherapy or (2) initiation of an investigational agent for treatment of prostate cancer (up to 18.6 months).
- id
- OG001
- title
- Placebo
- param Type
- MEDIAN
- population Description
- ITT population with available data.
- reporting Status
- POSTED
- time Frame
- From the date of randomization to initiation of cytotoxic chemotherapy median follow-up time is 7.39 months for enzalutamide and 5.19 months for placebo
- title
- Time to Initiation of Cytotoxic Chemotherapy
- type
- SECONDARY
- unit Of Measure
- Months
Download exact source JSON → · Snapshot ctgov-results-191f4516d4760045304b24a0
Preserved source evidence · Not medical advice