Trial Outcomes & Findings for A Study of Xeloda (Capecitabine) Plus Oxaliplatin in Patients With Colon Cancer (NCT NCT00069121)

Last Updated: 2020-03-06

Results Overview

Determination of an event was based on tumor assessments and survival follow-up assessments. A disease-free survival (DFS) event was defined as any recurrence of the original colon cancer or appearance of a new colon or rectal cancer (proven by cytology or histology, when possible) or death due to any cause, whichever was earliest. Participants who had not had any such event at the time of data analysis were censored at the last date they were known to be event-free. Participants with no tumor assessments after baseline were censored at Day 1. An isolated event of increased CEA, or unexplained clinical deterioration were not considered to be evidence of relapse without support of other objective measurements. The date of relapse was defined as the date of the definitive assessment by objective measurements.

Recruitment status

COMPLETED

Study phase

PHASE3

Target enrollment

1886 participants

Primary outcome timeframe

Time from randomization date to date of first DFS event/date last known to be event-free. Median observation time for DFS was 74 months (range: 0-95 months).

Results posted on

2020-03-06

Participant Flow

Participant milestones

Participant milestones
Measure	5-FU/LV Given by one of two regimens. • Mayo Clinic regimen group: LV 20 mg/m\^2 IV bolus injection + 5-FU 425 mg/m\^2 IV bolus injection daily on Days 1-5 of a four-week cycle, for a total of six cycles (24 weeks), or • Roswell Park regimen group: LV 500 mg/m\^2 by two-hour IV infusion + 5-FU 500 mg/m\^2 IV bolus injection one hour after the start of the LV infusion on Day 1 of Weeks 1 to 6 of each eight-week cycle, for a total of four cycles (32 weeks)	XELOX Capecitabine administered as an oral twice daily outpatient intermittent treatment (3-week cycles consisting of two weeks of treatment followed by one week without treatment) combined with intravenous (IV) oxaliplatin on Day 1 of each cycle. Capecitabine was administered orally at a dose of 1000 mg/m\^2 twice-daily (equivalent to a total daily dose of 2000 mg/m\^2) with the first dose given during the evening of Day 1 and last dose given during the morning of Day 15. Oxaliplatin was administered as a 130 mg/m\^2 IV infusion over two hours on Day 1 of each cycle. The XELOX combination was administered for a total of eight cycles (24 weeks)
Overall Study STARTED	942	944
Overall Study Received Treatment	926	938
Overall Study COMPLETED	575	619
Overall Study NOT COMPLETED	367	325

Reasons for withdrawal

Reasons for withdrawal
Measure	5-FU/LV Given by one of two regimens. • Mayo Clinic regimen group: LV 20 mg/m\^2 IV bolus injection + 5-FU 425 mg/m\^2 IV bolus injection daily on Days 1-5 of a four-week cycle, for a total of six cycles (24 weeks), or • Roswell Park regimen group: LV 500 mg/m\^2 by two-hour IV infusion + 5-FU 500 mg/m\^2 IV bolus injection one hour after the start of the LV infusion on Day 1 of Weeks 1 to 6 of each eight-week cycle, for a total of four cycles (32 weeks)	XELOX Capecitabine administered as an oral twice daily outpatient intermittent treatment (3-week cycles consisting of two weeks of treatment followed by one week without treatment) combined with intravenous (IV) oxaliplatin on Day 1 of each cycle. Capecitabine was administered orally at a dose of 1000 mg/m\^2 twice-daily (equivalent to a total daily dose of 2000 mg/m\^2) with the first dose given during the evening of Day 1 and last dose given during the morning of Day 15. Oxaliplatin was administered as a 130 mg/m\^2 IV infusion over two hours on Day 1 of each cycle. The XELOX combination was administered for a total of eight cycles (24 weeks)
Overall Study Death	286	242
Overall Study Withdrawal by Subject	18	20
Overall Study Lost to Follow-up	63	63

Baseline Characteristics

A Study of Xeloda (Capecitabine) Plus Oxaliplatin in Patients With Colon Cancer

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure	5-FU/LV n=942 Participants Given by one of two regimens. • Mayo Clinic regimen group: LV 20 mg/m\^2 IV bolus injection + 5-FU 425 mg/m\^2 IV bolus injection daily on Days 1-5 of a four-week cycle, for a total of six cycles (24 weeks), or • Roswell Park regimen group: LV 500 mg/m\^2 by two-hour IV infusion + 5-FU 500 mg/m\^2 IV bolus injection one hour after the start of the LV infusion on Day 1 of Weeks 1 to 6 of each eight-week cycle, for a total of four cycles (32 weeks)	XELOX n=944 Participants Capecitabine administered as an oral twice daily outpatient intermittent treatment (3-week cycles consisting of two weeks of treatment followed by one week without treatment) combined with intravenous (IV) oxaliplatin on Day 1 of each cycle. Capecitabine was administered orally at a dose of 1000 mg/m\^2 twice-daily (equivalent to a total daily dose of 2000 mg/m\^2) with the first dose given during the evening of Day 1 and last dose given during the morning of Day 15. Oxaliplatin was administered as a 130 mg/m\^2 IV infusion over two hours on Day 1 of each cycle. The XELOX combination was administered for a total of eight cycles (24 weeks)	Total n=1886 Participants Total of all reporting groups
Age, Continuous	60.5 years STANDARD_DEVIATION 10.76 • n=93 Participants	59.8 years STANDARD_DEVIATION 10.95 • n=4 Participants	60.2 years STANDARD_DEVIATION 10.86 • n=27 Participants
Sex: Female, Male Female	442 Participants n=93 Participants	431 Participants n=4 Participants	873 Participants n=27 Participants
Sex: Female, Male Male	500 Participants n=93 Participants	513 Participants n=4 Participants	1013 Participants n=27 Participants

PRIMARY outcome

Timeframe: Time from randomization date to date of first DFS event/date last known to be event-free. Median observation time for DFS was 74 months (range: 0-95 months).

Population: Intent-to-Treat Population

Outcome measures

Outcome measures
Measure	5-FU/LV n=942 Participants Given by one of two regimens. • Mayo Clinic regimen group: LV 20 mg/m\^2 IV bolus injection + 5-FU 425 mg/m\^2 IV bolus injection daily on Days 1-5 of a four-week cycle, for a total of six cycles (24 weeks), or • Roswell Park regimen group: LV 500 mg/m\^2 by two-hour IV infusion + 5-FU 500 mg/m\^2 IV bolus injection one hour after the start of the LV infusion on Day 1 of Weeks 1 to 6 of each eight-week cycle, for a total of four cycles (32 weeks)	XELOX n=944 Participants Capecitabine administered as an oral twice daily outpatient intermittent treatment (3-week cycles consisting of two weeks of treatment followed by one week without treatment) combined with intravenous (IV) oxaliplatin on Day 1 of each cycle. Capecitabine was administered orally at a dose of 1000 mg/m\^2 twice-daily (equivalent to a total daily dose of 2000 mg/m\^2) with the first dose given during the evening of Day 1 and last dose given during the morning of Day 15. Oxaliplatin was administered as a 130 mg/m\^2 IV infusion over two hours on Day 1 of each cycle. The XELOX combination was administered for a total of eight cycles (24 weeks)	XELOX Capecitabine administered as an oral twice daily outpatient intermittent treatment (3-week cycles consisting of two weeks of treatment followed by one week without treatment) combined with intravenous (IV) oxaliplatin on Day 1 of each cycle. Capecitabine was administered orally at a dose of 1000 mg/m\^2 twice-daily (equivalent to a total daily dose of 2000 mg/m\^2) with the first dose given during the evening of Day 1 and last dose given during the morning of Day 15. Oxaliplatin was administered as a 130 mg/m\^2 IV infusion over two hours on Day 1 of each cycle. The XELOX combination was administered for a total of eight cycles (24 weeks)
Disease-Free Survival (DFS) [Number of Events] Patients with Event	379 Participants	320 Participants	—
Disease-Free Survival (DFS) [Number of Events] Patients without Events	563 Participants	624 Participants	—

PRIMARY outcome

Timeframe: Time from randomization date to date of first DFS event/date last known to be event-free. Median observation time for DFS was 74 months (range: 0-95 months).

Population: Intent-to-Treat (ITT) Population: all randomized participants who gave written informed consent. Participants in the ITT population were analyzed according to the treatment arm to which they were randomized.

Outcome measures

Outcome measures
Measure	5-FU/LV n=942 Participants Given by one of two regimens. • Mayo Clinic regimen group: LV 20 mg/m\^2 IV bolus injection + 5-FU 425 mg/m\^2 IV bolus injection daily on Days 1-5 of a four-week cycle, for a total of six cycles (24 weeks), or • Roswell Park regimen group: LV 500 mg/m\^2 by two-hour IV infusion + 5-FU 500 mg/m\^2 IV bolus injection one hour after the start of the LV infusion on Day 1 of Weeks 1 to 6 of each eight-week cycle, for a total of four cycles (32 weeks)	XELOX n=944 Participants Capecitabine administered as an oral twice daily outpatient intermittent treatment (3-week cycles consisting of two weeks of treatment followed by one week without treatment) combined with intravenous (IV) oxaliplatin on Day 1 of each cycle. Capecitabine was administered orally at a dose of 1000 mg/m\^2 twice-daily (equivalent to a total daily dose of 2000 mg/m\^2) with the first dose given during the evening of Day 1 and last dose given during the morning of Day 15. Oxaliplatin was administered as a 130 mg/m\^2 IV infusion over two hours on Day 1 of each cycle. The XELOX combination was administered for a total of eight cycles (24 weeks)	XELOX Capecitabine administered as an oral twice daily outpatient intermittent treatment (3-week cycles consisting of two weeks of treatment followed by one week without treatment) combined with intravenous (IV) oxaliplatin on Day 1 of each cycle. Capecitabine was administered orally at a dose of 1000 mg/m\^2 twice-daily (equivalent to a total daily dose of 2000 mg/m\^2) with the first dose given during the evening of Day 1 and last dose given during the morning of Day 15. Oxaliplatin was administered as a 130 mg/m\^2 IV infusion over two hours on Day 1 of each cycle. The XELOX combination was administered for a total of eight cycles (24 weeks)
Disease-Free Survival (DFS) [Time to Event]	NA months Interval 0.0 to 95.0 The median time for DFS was not reached in this adjuvant trial; however, due to a late event in the XELOX arm and an artificial drop in the Kaplan-Meier estimate, an artificial median estimate for the XELOX groups appears.	88.6 months Interval 0.0 to 89.0	—

SECONDARY outcome

Timeframe: Time from randomization date to date of first RFS event/date last known to be event-free. Median observation time for RFS was 74 months (range: 0-95 months).

A relapse-free survival (RFS) event included recurrence of the original colon cancer, development of a new colon or rectal cancer, and deaths related to any of the following: treatment, recurrence of the original colon cancer, or development of a new colon or rectal cancer. Participants who had not had any such event at the time of data analysis were censored at the last date they were known to be event-free. Participants whose cause of death was unrelated to treatment or disease recurrence were censored at the time of the last tumor assessment.

Outcome measures

Outcome measures
Measure	5-FU/LV n=942 Participants Given by one of two regimens. • Mayo Clinic regimen group: LV 20 mg/m\^2 IV bolus injection + 5-FU 425 mg/m\^2 IV bolus injection daily on Days 1-5 of a four-week cycle, for a total of six cycles (24 weeks), or • Roswell Park regimen group: LV 500 mg/m\^2 by two-hour IV infusion + 5-FU 500 mg/m\^2 IV bolus injection one hour after the start of the LV infusion on Day 1 of Weeks 1 to 6 of each eight-week cycle, for a total of four cycles (32 weeks)	XELOX n=944 Participants Capecitabine administered as an oral twice daily outpatient intermittent treatment (3-week cycles consisting of two weeks of treatment followed by one week without treatment) combined with intravenous (IV) oxaliplatin on Day 1 of each cycle. Capecitabine was administered orally at a dose of 1000 mg/m\^2 twice-daily (equivalent to a total daily dose of 2000 mg/m\^2) with the first dose given during the evening of Day 1 and last dose given during the morning of Day 15. Oxaliplatin was administered as a 130 mg/m\^2 IV infusion over two hours on Day 1 of each cycle. The XELOX combination was administered for a total of eight cycles (24 weeks)	XELOX Capecitabine administered as an oral twice daily outpatient intermittent treatment (3-week cycles consisting of two weeks of treatment followed by one week without treatment) combined with intravenous (IV) oxaliplatin on Day 1 of each cycle. Capecitabine was administered orally at a dose of 1000 mg/m\^2 twice-daily (equivalent to a total daily dose of 2000 mg/m\^2) with the first dose given during the evening of Day 1 and last dose given during the morning of Day 15. Oxaliplatin was administered as a 130 mg/m\^2 IV infusion over two hours on Day 1 of each cycle. The XELOX combination was administered for a total of eight cycles (24 weeks)
Relapse-Free Survival (RFS) [Number of Events] Patients With Event	356 Participants	290 Participants	—
Relapse-Free Survival (RFS) [Number of Events] Patients Without Events	586 Participants	654 Participants	—

SECONDARY outcome

Timeframe: Time from randomization date to date of first RFS event/date last known to be event-free. Median observation time for RFS was 74 months (range: 0-95 months).

Outcome measures

Outcome measures
Measure	5-FU/LV n=942 Participants Given by one of two regimens. • Mayo Clinic regimen group: LV 20 mg/m\^2 IV bolus injection + 5-FU 425 mg/m\^2 IV bolus injection daily on Days 1-5 of a four-week cycle, for a total of six cycles (24 weeks), or • Roswell Park regimen group: LV 500 mg/m\^2 by two-hour IV infusion + 5-FU 500 mg/m\^2 IV bolus injection one hour after the start of the LV infusion on Day 1 of Weeks 1 to 6 of each eight-week cycle, for a total of four cycles (32 weeks)	XELOX n=944 Participants Capecitabine administered as an oral twice daily outpatient intermittent treatment (3-week cycles consisting of two weeks of treatment followed by one week without treatment) combined with intravenous (IV) oxaliplatin on Day 1 of each cycle. Capecitabine was administered orally at a dose of 1000 mg/m\^2 twice-daily (equivalent to a total daily dose of 2000 mg/m\^2) with the first dose given during the evening of Day 1 and last dose given during the morning of Day 15. Oxaliplatin was administered as a 130 mg/m\^2 IV infusion over two hours on Day 1 of each cycle. The XELOX combination was administered for a total of eight cycles (24 weeks)	XELOX Capecitabine administered as an oral twice daily outpatient intermittent treatment (3-week cycles consisting of two weeks of treatment followed by one week without treatment) combined with intravenous (IV) oxaliplatin on Day 1 of each cycle. Capecitabine was administered orally at a dose of 1000 mg/m\^2 twice-daily (equivalent to a total daily dose of 2000 mg/m\^2) with the first dose given during the evening of Day 1 and last dose given during the morning of Day 15. Oxaliplatin was administered as a 130 mg/m\^2 IV infusion over two hours on Day 1 of each cycle. The XELOX combination was administered for a total of eight cycles (24 weeks)
Relapse-Free Survival (RFS) [Time to Event]	NA months Interval 0.0 to 95.0 The median time for RFS was not reached in this adjuvant trial; however, due to a late event in the XELOX arm and an artificial drop in the Kaplan-Meier estimate, an artificial median estimate for the XELOX groups appears.	88.6 months Interval 0.0 to 89.0	—

SECONDARY outcome

Timeframe: Time from randomization date to date of death/date last known to be alive. Median observation time was 83 months (range: 0-95 months).

Overall survival was measured as the time from randomization to the date of death, irrespective of the cause of death. Participants who were not reported as having died at the time of the analysis were censored using the date they were last known to be alive.

Outcome measures

Outcome measures
Measure	5-FU/LV n=942 Participants Given by one of two regimens. • Mayo Clinic regimen group: LV 20 mg/m\^2 IV bolus injection + 5-FU 425 mg/m\^2 IV bolus injection daily on Days 1-5 of a four-week cycle, for a total of six cycles (24 weeks), or • Roswell Park regimen group: LV 500 mg/m\^2 by two-hour IV infusion + 5-FU 500 mg/m\^2 IV bolus injection one hour after the start of the LV infusion on Day 1 of Weeks 1 to 6 of each eight-week cycle, for a total of four cycles (32 weeks)	XELOX n=944 Participants Capecitabine administered as an oral twice daily outpatient intermittent treatment (3-week cycles consisting of two weeks of treatment followed by one week without treatment) combined with intravenous (IV) oxaliplatin on Day 1 of each cycle. Capecitabine was administered orally at a dose of 1000 mg/m\^2 twice-daily (equivalent to a total daily dose of 2000 mg/m\^2) with the first dose given during the evening of Day 1 and last dose given during the morning of Day 15. Oxaliplatin was administered as a 130 mg/m\^2 IV infusion over two hours on Day 1 of each cycle. The XELOX combination was administered for a total of eight cycles (24 weeks)	XELOX Capecitabine administered as an oral twice daily outpatient intermittent treatment (3-week cycles consisting of two weeks of treatment followed by one week without treatment) combined with intravenous (IV) oxaliplatin on Day 1 of each cycle. Capecitabine was administered orally at a dose of 1000 mg/m\^2 twice-daily (equivalent to a total daily dose of 2000 mg/m\^2) with the first dose given during the evening of Day 1 and last dose given during the morning of Day 15. Oxaliplatin was administered as a 130 mg/m\^2 IV infusion over two hours on Day 1 of each cycle. The XELOX combination was administered for a total of eight cycles (24 weeks)
Overall Survival [Number of Events] Patients With Event	286 Participants	242 Participants	—
Overall Survival [Number of Events] Patients Without Events	656 Participants	702 Participants	—

SECONDARY outcome

Timeframe: Time from randomization date to date of death/date last known to be alive. Median observation time was 83 months (range: 0-95 months).

Outcome measures

Outcome measures
Measure	5-FU/LV n=942 Participants Given by one of two regimens. • Mayo Clinic regimen group: LV 20 mg/m\^2 IV bolus injection + 5-FU 425 mg/m\^2 IV bolus injection daily on Days 1-5 of a four-week cycle, for a total of six cycles (24 weeks), or • Roswell Park regimen group: LV 500 mg/m\^2 by two-hour IV infusion + 5-FU 500 mg/m\^2 IV bolus injection one hour after the start of the LV infusion on Day 1 of Weeks 1 to 6 of each eight-week cycle, for a total of four cycles (32 weeks)	XELOX n=944 Participants Capecitabine administered as an oral twice daily outpatient intermittent treatment (3-week cycles consisting of two weeks of treatment followed by one week without treatment) combined with intravenous (IV) oxaliplatin on Day 1 of each cycle. Capecitabine was administered orally at a dose of 1000 mg/m\^2 twice-daily (equivalent to a total daily dose of 2000 mg/m\^2) with the first dose given during the evening of Day 1 and last dose given during the morning of Day 15. Oxaliplatin was administered as a 130 mg/m\^2 IV infusion over two hours on Day 1 of each cycle. The XELOX combination was administered for a total of eight cycles (24 weeks)	XELOX Capecitabine administered as an oral twice daily outpatient intermittent treatment (3-week cycles consisting of two weeks of treatment followed by one week without treatment) combined with intravenous (IV) oxaliplatin on Day 1 of each cycle. Capecitabine was administered orally at a dose of 1000 mg/m\^2 twice-daily (equivalent to a total daily dose of 2000 mg/m\^2) with the first dose given during the evening of Day 1 and last dose given during the morning of Day 15. Oxaliplatin was administered as a 130 mg/m\^2 IV infusion over two hours on Day 1 of each cycle. The XELOX combination was administered for a total of eight cycles (24 weeks)
Overall Survival [Time to Event]	NA months Interval 0.0 to 95.0 The median time to death was not reached in this adjuvant trial.	NA months Interval 0.0 to 93.0 The median time to death was not reached in this adjuvant trial.	—

SECONDARY outcome

Timeframe: From time of very first drug intake to 28 days after very last drug intake (median [full range] duration of study treatment per arm: 5-FU/LV MAYO CLINIC: 145 [4-208] days; 5-FU/LV ROSWELL PARK: 204 [1-239] days; XELOX: 163 [1-275] days).

Population: Safety Population: all participants who were randomized and did receive at least one dose of capecitabine, 5-FU, or oxaliplatin. Participants in the safety population were analyzed according to the study treatment they received.

The intensity of all adverse events (AEs) was categorized according to the National Cancer Institute Common Toxicity Criteria for Adverse Events (NCI CTCAE) (version 3.0) grading system. If an AE had occurred which was not contained in the NCI-CTC, a four-point scale (mild, moderate, severe, life-threatening) was used. The terms "severe" and "serious" are not synonymous and are independently assessed for each AE. Only the most severe intensity was counted for multiple occurrences of an AE in one individual. See the AEs results table for details.

Outcome measures

Outcome measures
Measure	5-FU/LV n=657 Participants Given by one of two regimens. • Mayo Clinic regimen group: LV 20 mg/m\^2 IV bolus injection + 5-FU 425 mg/m\^2 IV bolus injection daily on Days 1-5 of a four-week cycle, for a total of six cycles (24 weeks), or • Roswell Park regimen group: LV 500 mg/m\^2 by two-hour IV infusion + 5-FU 500 mg/m\^2 IV bolus injection one hour after the start of the LV infusion on Day 1 of Weeks 1 to 6 of each eight-week cycle, for a total of four cycles (32 weeks)	XELOX n=269 Participants Capecitabine administered as an oral twice daily outpatient intermittent treatment (3-week cycles consisting of two weeks of treatment followed by one week without treatment) combined with intravenous (IV) oxaliplatin on Day 1 of each cycle. Capecitabine was administered orally at a dose of 1000 mg/m\^2 twice-daily (equivalent to a total daily dose of 2000 mg/m\^2) with the first dose given during the evening of Day 1 and last dose given during the morning of Day 15. Oxaliplatin was administered as a 130 mg/m\^2 IV infusion over two hours on Day 1 of each cycle. The XELOX combination was administered for a total of eight cycles (24 weeks)	XELOX n=938 Participants Capecitabine administered as an oral twice daily outpatient intermittent treatment (3-week cycles consisting of two weeks of treatment followed by one week without treatment) combined with intravenous (IV) oxaliplatin on Day 1 of each cycle. Capecitabine was administered orally at a dose of 1000 mg/m\^2 twice-daily (equivalent to a total daily dose of 2000 mg/m\^2) with the first dose given during the evening of Day 1 and last dose given during the morning of Day 15. Oxaliplatin was administered as a 130 mg/m\^2 IV infusion over two hours on Day 1 of each cycle. The XELOX combination was administered for a total of eight cycles (24 weeks)
Number of Participants With at Least One Adverse Event by Most Severe Intensity Moderate AEs	493 Participants	217 Participants	792 Participants
Number of Participants With at Least One Adverse Event by Most Severe Intensity Mild AEs	557 Participants	256 Participants	855 Participants
Number of Participants With at Least One Adverse Event by Most Severe Intensity Severe AEs	299 Participants	146 Participants	548 Participants
Number of Participants With at Least One Adverse Event by Most Severe Intensity Life-Threatening	83 Participants	21 Participants	63 Participants

Adverse Events

5-FU/LV MAYO CLINIC

Serious events: 134 serious events

Other events: 622 other events

Deaths: 215 deaths

5-FU/LV ROSWELL PARK

Serious events: 88 serious events

Other events: 262 other events

Deaths: 71 deaths

XELOX

Serious events: 208 serious events

Other events: 926 other events

Deaths: 242 deaths

Serious adverse events

Other adverse events

Additional Information

Medical Communications

Hoffmann-La Roche

Phone: 800-821-8590

Email: [email protected]

Results disclosure agreements

Principal investigator is a sponsor employee The Study being conducted under this Agreement is part of the Overall Study. Investigator is free to publish in reputable journals or to present at professional conferences the results of the Study, but only after the first publication or presentation that involves the Overall Study. The Sponsor may request that Confidential Information be deleted and/or the publication be postponed in order to protect the Sponsor's intellectual property rights.
Publication restrictions are in place

Restriction type: OTHER