Trial Outcomes & Findings for Initial Attack on Latent Metastasis Using TAS-102 for ct DNA Identified Colorectal Cancer Patients After Curative Resection (NCT NCT04457297)
NCT ID: NCT04457297
Last Updated: 2026-01-21
Results Overview
The time from the date of enrollment to any of the following events, whichever occurs first: a relapse, the first development of a secondary colorectal cancer lesion other than a relapse and death from any cause.
COMPLETED
PHASE3
243 participants
Up to 3 years
2026-01-21
Participant Flow
Participant milestones
| Measure |
Trifluridine and Tipiracil
trifluridine and tipiracil: Trifluridine and tipiracil will be orally administered twice daily on Days 1 to 5 and Days 8 to 12. The administration will be repeated until completion of 6 courses(one course consists of 28 days) or until any discontinuation criterion is met.
|
Placebo
Placebo: Placebo will be orally administered twice daily on Days 1 to 5 and Days 8 to 12. The administration will be repeated until completion of 6 courses(one course consists of 28 days) or until any discontinuation criterion is met.
|
|---|---|---|
|
Overall Study
STARTED
|
122
|
121
|
|
Overall Study
COMPLETED
|
122
|
121
|
|
Overall Study
NOT COMPLETED
|
0
|
0
|
Reasons for withdrawal
Withdrawal data not reported
Baseline Characteristics
Initial Attack on Latent Metastasis Using TAS-102 for ct DNA Identified Colorectal Cancer Patients After Curative Resection
Baseline characteristics by cohort
| Measure |
Trifluridine and Tipiracil
n=122 Participants
trifluridine and tipiracil: Trifluridine and tipiracil will be orally administered twice daily on Days 1 to 5 and Days 8 to 12. The administration will be repeated until completion of 6 courses(one course consists of 28 days) or until any discontinuation criterion is met.
|
Placebo
n=121 Participants
Placebo: Placebo will be orally administered twice daily on Days 1 to 5 and Days 8 to 12. The administration will be repeated until completion of 6 courses(one course consists of 28 days) or until any discontinuation criterion is met.
|
Total
n=243 Participants
Total of all reporting groups
|
|---|---|---|---|
|
Age, Categorical
<=18 years
|
0 Participants
n=37 Participants
|
0 Participants
n=44 Participants
|
0 Participants
n=40 Participants
|
|
Age, Categorical
Between 18 and 65 years
|
52 Participants
n=37 Participants
|
57 Participants
n=44 Participants
|
109 Participants
n=40 Participants
|
|
Age, Categorical
>=65 years
|
70 Participants
n=37 Participants
|
64 Participants
n=44 Participants
|
134 Participants
n=40 Participants
|
|
Age, Continuous
|
67.0 years
n=37 Participants
|
65.0 years
n=44 Participants
|
66.0 years
n=40 Participants
|
|
Sex: Female, Male
Female
|
51 Participants
n=37 Participants
|
51 Participants
n=44 Participants
|
102 Participants
n=40 Participants
|
|
Sex: Female, Male
Male
|
71 Participants
n=37 Participants
|
70 Participants
n=44 Participants
|
141 Participants
n=40 Participants
|
|
Race (NIH/OMB)
American Indian or Alaska Native
|
0 Participants
n=37 Participants
|
0 Participants
n=44 Participants
|
0 Participants
n=40 Participants
|
|
Race (NIH/OMB)
Asian
|
0 Participants
n=37 Participants
|
0 Participants
n=44 Participants
|
0 Participants
n=40 Participants
|
|
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
|
0 Participants
n=37 Participants
|
0 Participants
n=44 Participants
|
0 Participants
n=40 Participants
|
|
Race (NIH/OMB)
Black or African American
|
0 Participants
n=37 Participants
|
0 Participants
n=44 Participants
|
0 Participants
n=40 Participants
|
|
Race (NIH/OMB)
White
|
0 Participants
n=37 Participants
|
0 Participants
n=44 Participants
|
0 Participants
n=40 Participants
|
|
Race (NIH/OMB)
More than one race
|
0 Participants
n=37 Participants
|
0 Participants
n=44 Participants
|
0 Participants
n=40 Participants
|
|
Race (NIH/OMB)
Unknown or Not Reported
|
122 Participants
n=37 Participants
|
121 Participants
n=44 Participants
|
243 Participants
n=40 Participants
|
|
Region of Enrollment
Japan
|
121 participants
n=37 Participants
|
121 participants
n=44 Participants
|
242 participants
n=40 Participants
|
|
Region of Enrollment
Taiwan
|
1 participants
n=37 Participants
|
0 participants
n=44 Participants
|
1 participants
n=40 Participants
|
PRIMARY outcome
Timeframe: Up to 3 yearsPopulation: Disease free survival 1 (DFS1) was assessed in Full Analysis Set.
The time from the date of enrollment to any of the following events, whichever occurs first: a relapse, the first development of a secondary colorectal cancer lesion other than a relapse and death from any cause.
Outcome measures
| Measure |
Placebo
n=121 Participants
Placebo will be orally administered twice daily on Days 1 to 5 and Days 8 to 12. The administration will be repeated until completion of 6 courses(one course consists of 28 days) or until any discontinuation criterion is met.
|
Trifluridine and Tipiracil
n=122 Participants
Trifluridine and tipiracil will be orally administered twice daily on Days 1 to 5 and Days 8 to 12. The administration will be repeated until completion of 6 courses(one course consists of 28 days) or until any discontinuation criterion is met.
|
|---|---|---|
|
Disease-free Survival 1 (DFS1)
|
5.55 Months
Interval 4.17 to 6.47
|
9.30 Months
Interval 7.82 to 10.84
|
SECONDARY outcome
Timeframe: Up to 2 yearsPopulation: Rate of Conversion to Negative ctDNA was assessed in Full Analysis Set.
This rate is defined as the proportion of subjects who became negative for ctDNA at the test immediately after completion of study treatment.
Outcome measures
| Measure |
Placebo
n=121 Participants
Placebo will be orally administered twice daily on Days 1 to 5 and Days 8 to 12. The administration will be repeated until completion of 6 courses(one course consists of 28 days) or until any discontinuation criterion is met.
|
Trifluridine and Tipiracil
n=122 Participants
Trifluridine and tipiracil will be orally administered twice daily on Days 1 to 5 and Days 8 to 12. The administration will be repeated until completion of 6 courses(one course consists of 28 days) or until any discontinuation criterion is met.
|
|---|---|---|
|
Rate of Conversion to Negative ctDNA
|
12.4 Percentage
Interval 7.1 to 19.6
|
17.2 Percentage
Interval 11.0 to 25.1
|
SECONDARY outcome
Timeframe: Up to 3 yearsPopulation: Disease free survival 2 (DFS2) was assessed in Full Analysis Set.
The time from the date of enrollment to any of the following events, whichever occurs first: a relapse, development of a cancer lesion other than a relapse (secondary cancer), and death from any cause. For survives with no evidence of recurrence, DFS2 data will be censored at the last imaging date of confirmed no recurrence. Subjects for which no imaging have been performed, DFS2 data will be censored at the date of enrollment.
Outcome measures
| Measure |
Placebo
n=121 Participants
Placebo will be orally administered twice daily on Days 1 to 5 and Days 8 to 12. The administration will be repeated until completion of 6 courses(one course consists of 28 days) or until any discontinuation criterion is met.
|
Trifluridine and Tipiracil
n=122 Participants
Trifluridine and tipiracil will be orally administered twice daily on Days 1 to 5 and Days 8 to 12. The administration will be repeated until completion of 6 courses(one course consists of 28 days) or until any discontinuation criterion is met.
|
|---|---|---|
|
Disease-free Survival 2 (DFS2)
|
5.55 Months
Interval 4.17 to 6.47
|
9.30 Months
Interval 7.82 to 10.84
|
SECONDARY outcome
Timeframe: Up to 3 yearsPopulation: Overall survival (OS) was assessed in Full Analysis Set.
The time from the date of enrollment to the date of death from any cause. In surviving subjects, the last date of confirmation of survival will be treated as the end of this period. In subjects lost to follow-up, the last date of confirmation of survival before loss to follow-up will be treated as the end of this period.
Outcome measures
| Measure |
Placebo
n=121 Participants
Placebo will be orally administered twice daily on Days 1 to 5 and Days 8 to 12. The administration will be repeated until completion of 6 courses(one course consists of 28 days) or until any discontinuation criterion is met.
|
Trifluridine and Tipiracil
n=122 Participants
Trifluridine and tipiracil will be orally administered twice daily on Days 1 to 5 and Days 8 to 12. The administration will be repeated until completion of 6 courses(one course consists of 28 days) or until any discontinuation criterion is met.
|
|---|---|---|
|
Overall Survival (OS)
|
37.26 Months
In the placebo group, an event occurred in the patient with the longest follow-up period, allowing the median to be calculated. However, due to an insufficient number of events, the upper and lower limits of the confidence interval could not be calculated.
|
NA Months
In the trifluridine and tipiracil group, because the number of events did not reach 50%, the median OS (95% CI) was not reach.
|
SECONDARY outcome
Timeframe: Up to 3 yearsPopulation: Treatment completion rate was assessed in Full Analysis Set.
This rate had calculated for each eligible subject in accordance with the following equation: Treatment completion rate (%) = number of treatment courses completed/6 × 100
Outcome measures
| Measure |
Placebo
n=121 Participants
Placebo will be orally administered twice daily on Days 1 to 5 and Days 8 to 12. The administration will be repeated until completion of 6 courses(one course consists of 28 days) or until any discontinuation criterion is met.
|
Trifluridine and Tipiracil
n=122 Participants
Trifluridine and tipiracil will be orally administered twice daily on Days 1 to 5 and Days 8 to 12. The administration will be repeated until completion of 6 courses(one course consists of 28 days) or until any discontinuation criterion is met.
|
|---|---|---|
|
Treatment Completion Rate
|
78.79 Percentage of treatment completion
Standard Deviation 25.46
|
77.87 Percentage of treatment completion
Standard Deviation 30.26
|
SECONDARY outcome
Timeframe: Up to 1 yearPopulation: QOL was assessed in Full Analysis Set.
Measure Description: Quality of Life was assessed using two validated instruments: EORTC QLQ-C30 (European Organization for Research and Treatment of Cancer Quality of Life Questionnaire-Core 30) evaluates cancer-specific HRQoL across domains: Global Health Status/QoL (range: 0-100, higher = better global health/QoL), Functional Scales (Physical, Role, Emotional, Cognitive, Social; each range: 0-100, higher = better functioning), Symptom Scales (Fatigue, Nausea/vomiting, Pain, Dyspnoea, Insomnia, Appetite loss, Constipation, Diarrhoea, Financial difficulties): each 0-100 (higher = worse/more severe symptoms). Scores are linearly transformed; subscales are reported individually (not summed). EQ-5D-5L (EuroQOL 5-Dimension 5-Level) measures general health across five dimensions: Index Score (range: -1.000 to 1.000, higher = better health), Visual Analogue Scale (VAS) (range: 0-100, higher = better health). Unit of Measure: scores on a scale. Note: Only Week 24 results are presented.
Outcome measures
| Measure |
Placebo
n=121 Participants
Placebo will be orally administered twice daily on Days 1 to 5 and Days 8 to 12. The administration will be repeated until completion of 6 courses(one course consists of 28 days) or until any discontinuation criterion is met.
|
Trifluridine and Tipiracil
n=122 Participants
Trifluridine and tipiracil will be orally administered twice daily on Days 1 to 5 and Days 8 to 12. The administration will be repeated until completion of 6 courses(one course consists of 28 days) or until any discontinuation criterion is met.
|
|---|---|---|
|
QOL (Week 24 Only)
Global healthstatus/QoL (Week 24)
|
4.36 scores on a scale
Standard Deviation 22.39
|
0.00 scores on a scale
Standard Deviation 22.71
|
|
QOL (Week 24 Only)
EORTC QLQ-C30 Functional scales: Physical functioning (Week 24)
|
1.13 scores on a scale
Standard Deviation 9.47
|
-1.10 scores on a scale
Standard Deviation 13.64
|
|
QOL (Week 24 Only)
EORTC QLQ-C30 Functional scales: Role functioning (Week 24)
|
-3.33 scores on a scale
Standard Deviation 12.57
|
-3.33 scores on a scale
Standard Deviation 14.27
|
|
QOL (Week 24 Only)
EORTC QLQ-C30 Functional scales: Emotional functioning (Week 24)
|
0.64 scores on a scale
Standard Deviation 13.84
|
4.22 scores on a scale
Standard Deviation 14.86
|
|
QOL (Week 24 Only)
EORTC QLQ-C30 Functional scales: Cognitive functioning (Week 24)
|
2.56 scores on a scale
Standard Deviation 17.49
|
0.20 scores on a scale
Standard Deviation 15.75
|
|
QOL (Week 24 Only)
EORTC QLQ-C30 Functional scales: Social functioning (Week 24)
|
1.28 scores on a scale
Standard Deviation 12.95
|
-2.55 scores on a scale
Standard Deviation 12.99
|
|
QOL (Week 24 Only)
EORTC QLQ-C30 Symptom scales: Fatigue (Week 24)
|
-2.74 scores on a scale
Standard Deviation 16.90
|
3.14 scores on a scale
Standard Deviation 16.76
|
|
QOL (Week 24 Only)
EORTC QLQ-C30 Symptom scales: Nausea and vomiting (Week 24)
|
10.26 scores on a scale
Standard Deviation 7.96
|
4.12 scores on a scale
Standard Deviation 1.28
|
|
QOL (Week 24 Only)
EORTC QLQ-C30 Symptom scales: Pain (Week 24)
|
1.54 scores on a scale
Standard Deviation 15.23
|
-1.18 scores on a scale
Standard Deviation 15.17
|
|
QOL (Week 24 Only)
EORTC QLQ-C30 Symptom scales: Dyspnoea (Week 24)
|
0.51 scores on a scale
Standard Deviation 17.17
|
1.18 scores on a scale
Standard Deviation 18.86
|
|
QOL (Week 24 Only)
EORTC QLQ-C30 Symptom scales: Insomnia (Week 24)
|
-0.51 scores on a scale
Standard Deviation 15.01
|
-0.39 scores on a scale
Standard Deviation 25.46
|
|
QOL (Week 24 Only)
EORTC QLQ-C30 Symptom scales: Appetite (Week 24)
|
1.03 scores on a scale
Standard Deviation 13.14
|
5.49 scores on a scale
Standard Deviation 21.73
|
|
QOL (Week 24 Only)
EORTC QLQ-C30 Symptom scales: Constipation (Week 24)
|
3.08 scores on a scale
Standard Deviation 20.18
|
2.75 scores on a scale
Standard Deviation 20.71
|
|
QOL (Week 24 Only)
EORTC QLQ-C30 Symptom scales: Diarrhoea (Week 24)
|
4.62 scores on a scale
Standard Deviation 22.15
|
6.67 scores on a scale
Standard Deviation 22.30
|
|
QOL (Week 24 Only)
EORTC QLQ-C30 Symptom scales: Financial difficulties (Week 24)
|
-2.05 scores on a scale
Standard Deviation 20.31
|
-4.31 scores on a scale
Standard Deviation 21.07
|
|
QOL (Week 24 Only)
EQ-5D-5L Index Score (Week 24)
|
0.1110 scores on a scale
Standard Deviation 0.0986
|
-0.0019 scores on a scale
Standard Deviation 0.0170
|
|
QOL (Week 24 Only)
EQ-5D-5L VAS (Week 24)
|
1.6 scores on a scale
Standard Deviation 13.0
|
1.2 scores on a scale
Standard Deviation 12.7
|
Adverse Events
Trifluridine and Tipiracil
Placebo
Serious adverse events
| Measure |
Trifluridine and Tipiracil
n=122 participants at risk
Trifluridine and tipiracil will be orally administered twice daily on Days 1 to 5 and Days 8 to 12. The administration will be repeated until completion of 6 courses(one course consists of 28 days) or until any discontinuation criterion is met.
|
Placebo
n=121 participants at risk
Placebo will be orally administered twice daily on Days 1 to 5 and Days 8 to 12. The administration will be repeated until completion of 6 courses(one course consists of 28 days) or until any discontinuation criterion is met.
|
|---|---|---|
|
Neoplasms benign, malignant and unspecified (incl cysts and polyps)
Adenocarcinoma gastric
|
0.82%
1/122 • Up to 3 years
|
0.00%
0/121 • Up to 3 years
|
|
Nervous system disorders
Cerebral haemorrhage
|
0.82%
1/122 • Up to 3 years
|
0.00%
0/121 • Up to 3 years
|
|
Nervous system disorders
Cerebral infarction
|
0.82%
1/122 • Up to 3 years
|
0.00%
0/121 • Up to 3 years
|
|
Cardiac disorders
Myocardial infarction
|
0.82%
1/122 • Up to 3 years
|
0.00%
0/121 • Up to 3 years
|
|
Respiratory, thoracic and mediastinal disorders
Aspiration
|
0.82%
1/122 • Up to 3 years
|
0.00%
0/121 • Up to 3 years
|
|
Gastrointestinal disorders
Ileus
|
1.6%
2/122 • Up to 3 years
|
0.00%
0/121 • Up to 3 years
|
|
Gastrointestinal disorders
Intestinal obstruction
|
0.82%
1/122 • Up to 3 years
|
0.00%
0/121 • Up to 3 years
|
Other adverse events
| Measure |
Trifluridine and Tipiracil
n=122 participants at risk
Trifluridine and tipiracil will be orally administered twice daily on Days 1 to 5 and Days 8 to 12. The administration will be repeated until completion of 6 courses(one course consists of 28 days) or until any discontinuation criterion is met.
|
Placebo
n=121 participants at risk
Placebo will be orally administered twice daily on Days 1 to 5 and Days 8 to 12. The administration will be repeated until completion of 6 courses(one course consists of 28 days) or until any discontinuation criterion is met.
|
|---|---|---|
|
General disorders
Fatigue
|
14.8%
18/122 • Up to 3 years
|
5.0%
6/121 • Up to 3 years
|
|
General disorders
Malaise
|
15.6%
19/122 • Up to 3 years
|
5.8%
7/121 • Up to 3 years
|
|
General disorders
Pyrexia
|
6.6%
8/122 • Up to 3 years
|
3.3%
4/121 • Up to 3 years
|
|
Investigations
Blood bilirubin increased
|
7.4%
9/122 • Up to 3 years
|
4.1%
5/121 • Up to 3 years
|
|
Investigations
Lymphocyte count decreased
|
8.2%
10/122 • Up to 3 years
|
0.83%
1/121 • Up to 3 years
|
|
Investigations
Neutrophil count decreased
|
74.6%
91/122 • Up to 3 years
|
4.1%
5/121 • Up to 3 years
|
|
Investigations
Platelet count decreased
|
12.3%
15/122 • Up to 3 years
|
3.3%
4/121 • Up to 3 years
|
|
Investigations
White blood cell count decreased
|
63.9%
78/122 • Up to 3 years
|
3.3%
4/121 • Up to 3 years
|
|
Blood and lymphatic system disorders
Leukopenia
|
6.6%
8/122 • Up to 3 years
|
0.00%
0/121 • Up to 3 years
|
|
Gastrointestinal disorders
Constipation
|
5.7%
7/122 • Up to 3 years
|
5.0%
6/121 • Up to 3 years
|
|
Blood and lymphatic system disorders
Anaemia
|
26.2%
32/122 • Up to 3 years
|
1.7%
2/121 • Up to 3 years
|
|
Blood and lymphatic system disorders
Neutropenia
|
12.3%
15/122 • Up to 3 years
|
0.00%
0/121 • Up to 3 years
|
|
Metabolism and nutrition disorders
Decreased appetite
|
22.1%
27/122 • Up to 3 years
|
1.7%
2/121 • Up to 3 years
|
|
Nervous system disorders
Dysgeusia
|
8.2%
10/122 • Up to 3 years
|
0.83%
1/121 • Up to 3 years
|
|
Nervous system disorders
Headache
|
5.7%
7/122 • Up to 3 years
|
1.7%
2/121 • Up to 3 years
|
|
Gastrointestinal disorders
Diarrhoea
|
33.6%
41/122 • Up to 3 years
|
10.7%
13/121 • Up to 3 years
|
|
Gastrointestinal disorders
Nausea
|
51.6%
63/122 • Up to 3 years
|
12.4%
15/121 • Up to 3 years
|
|
Gastrointestinal disorders
Stomatitis
|
14.8%
18/122 • Up to 3 years
|
5.8%
7/121 • Up to 3 years
|
|
Gastrointestinal disorders
Vomiting
|
9.8%
12/122 • Up to 3 years
|
3.3%
4/121 • Up to 3 years
|
|
Skin and subcutaneous tissue disorders
Alopecia
|
8.2%
10/122 • Up to 3 years
|
0.00%
0/121 • Up to 3 years
|
Additional Information
Takayuki Yoshino
National Cancer Center Hospital East
Results disclosure agreements
- Principal investigator is a sponsor employee
- Publication restrictions are in place