Neoadjuvant Chemoradiotherapy and Adjuvant Chemotherapy in Treating Patients Who Are Undergoing Surgical Resection for Locally Advanced Rectal Cancer

Phase 2

Completed

• Conditions: Colorectal Cancer
• Interventions: Radiation: Radiation Therapy; Drug: Capecitabine 1650 mg/m^2/day; Drug: Capecitabine 1200 mg/m^2/day; Drug: Oxaliplatin; Drug: Irinotecan; Procedure: Surgery; Drug: Folinic Acid; Drug: Fluorouracil

• Registration Number: NCT00081289
• Lead Sponsor: Radiation Therapy Oncology Group

Brief Summary

RATIONALE: Drugs used in chemotherapy work in different ways to stop tumor cells from dividing so they stop growing or die. Radiation therapy uses high-energy x-rays to damage tumor cells. Chemoradiotherapy (combining chemotherapy with radiation therapy) before surgery may shrink the tumor so that it can be removed. Giving chemotherapy after surgery may kill any remaining tumor cells.

PURPOSE: This randomized phase II trial is studying two different regimens of neoadjuvant chemoradiotherapy and adjuvant chemotherapy and comparing how well they work in treating patients who are undergoing surgical resection for locally advanced rectal cancer.

Detailed Description

OBJECTIVES:

* Evaluate the pathologic complete response rate in patients with locally advanced rectal cancer undergoing surgical resection treated with 2 different regimens of neoadjuvant chemoradiotherapy and adjuvant chemotherapy.

* Evaluate the time to treatment failure and patterns of failure in patients treated with these regimens.

* Evaluate the incidence of hematologic and non-hematologic grade 3-4 toxicity (preoperatively, postoperatively, and overall) in patients treated with these regimens.

* Evaluate the quality of life of patients treated with these regimens.

OUTLINE: This is a randomized, multicenter study. Patients are stratified according to clinical stage of tumor (T3 vs T4). Patients are randomized to 1 of 2 treatment arms.

Quality of life is assessed at baseline, within 1 week after completion of radiotherapy, within 1 week after completion of adjuvant chemotherapy (12 months), and then at 24 months.

Patients are followed every 3 months for 2 years, every 6 months for 3 years, and then annually thereafter.

Study Timeline

• Study Start: 2004-03
• Study First Submitted: 2004-04-07
• Study First Submitted QC: 2004-04-07
• Study First Posted: 2004-04-08
• Primary Completion: 2011-05
• Results First Submitted: 2013-05-23
• Results First Submitted QC: 2013-09-26
• Results First Posted: 2013-11-25
• Study Completion: 2016-12
• Status Verified: 2020-02
• Last Update Submitted: 2020-02-04
• Last Update Posted: 2020-02-27

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 146

Inclusion Criteria

1. Adenocarcinoma of the rectum originating at or below 12 cm from the anal verge without evidence of distant metastases

2. Patient must be 18 years of age or greater.

3. Potentially resectable en bloc based upon surgeon evaluation

4. Clinical stages T3 or T4, based upon endorectal ultrasound, or physical examination (only acceptable for T4 lesions).

5. Absolute neutrophil count of > 1500 per microliter and platelet count > 100,000 per microliter; aspartate aminotransferase (AST) and alkaline phosphatase < 2.5 X upper limit of normal (ULN), bilirubin < = 1.5 ULN, calculated creatinine clearance > 50 ml/min using Cockcroft-Gault formula:

   • CrCl male = (140 - age) x (wt. in kg) / (Serum Cr) x 72
   • CrCl female = 0.85 x (CrCl male)

6. Zubrod performance status 0-2

7. No history of other malignancies within 5 years, except non-melanoma skin cancer, in situ carcinoma of the cervix, or ductal carcinoma in situ of the breast. Previous invasive cancer permitted if disease free at least 5 years.

8. Signed study-specific informed consent prior to randomization

Exclusion Criteria

1. Any evidence of distant metastasis
2. Synchronous primary colon carcinomas, except T1 lesions (full colonoscopy not required for enrollment)
3. Extension of malignant disease to the anal canal
4. Prior radiation therapy to the pelvis
5. Prior chemotherapy for malignancies
6. Pregnancy or lactation, (exclusion due to potential adverse effects of therapy). Women of childbearing potential with either a positive or no pregnancy test (serum or urine) at baseline. Women/men of childbearing potential not using a reliable and appropriate contraceptive method. (Postmenopausal women must have been amenorrheic for at least 12 months to be considered to be of non-childbearing potential.) Patients will agree to continue contraception for 30 days from the date of the last study drug administration.
7. Serious, uncontrolled, concurrent infection(s).
8. Participation in any investigational drug study within 4 weeks preceding the start of study treatment.
9. Clinically significant cardiac disease (e.g. congestive heart failure, symptomatic coronary artery disease and cardiac arrhythmias not well controlled with medication) or myocardial infarction within the last 12 months.
10. Evidence of uncontrolled seizures, central nervous system disorders or psychiatric disability judged by the investigator to be clinically significant, precluding informed consent, or interfering with compliance of oral drug intake.
11. Other serious uncontrolled medical conditions that the investigator feels might compromise study participation.
12. Major surgery within 4 weeks of the study treatment.
13. Lack of physical integrity of the upper gastrointestinal tract or malabsorption syndrome.
14. Known, existing uncontrolled coagulopathy.
15. No concurrent cimetidine allowed.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Neoadjuvant chemoradiation with oxaliplatin	Capecitabine 1650 mg/m^2/day	Patients receive neoadjuvant therapy comprising 45 Gy (1.8 Gy/fx) + 5.4 Gy boost (1.8 Gy/fx) radiation therapy (RT), oral capecitabine 1650mg/m\^2/day 5 days/week during RT, and oxaliplatin 50 mg/m\^2 IV for 2 hours days 1, 8, 15, 22, 29. Surgery 4-8 weeks after RT. Postoperative chemotherapy beginning Day 1 postoperatively for nine 14-day cycles(folinic acid 400 mg/m\^2 over 2 hours Day 1; 5-fluorouracil bolus 400 mg/m\^2 IV push Day 1 plus 2400 mg/m\^2 IV continuous infusion over 46 hours, beginning Day 1; and oxaliplatin 85 mg/m\^2 IV over 2 hours Day 1) .
Neoadjuvant chemoradiation with oxaliplatin	Oxaliplatin	Patients receive neoadjuvant therapy comprising 45 Gy (1.8 Gy/fx) + 5.4 Gy boost (1.8 Gy/fx) radiation therapy (RT), oral capecitabine 1650mg/m\^2/day 5 days/week during RT, and oxaliplatin 50 mg/m\^2 IV for 2 hours days 1, 8, 15, 22, 29. Surgery 4-8 weeks after RT. Postoperative chemotherapy beginning Day 1 postoperatively for nine 14-day cycles(folinic acid 400 mg/m\^2 over 2 hours Day 1; 5-fluorouracil bolus 400 mg/m\^2 IV push Day 1 plus 2400 mg/m\^2 IV continuous infusion over 46 hours, beginning Day 1; and oxaliplatin 85 mg/m\^2 IV over 2 hours Day 1) .
Neoadjuvant chemoradiation with irinotecan	Capecitabine 1200 mg/m^2/day	Patients receive neoadjuvant therapy comprising 45 Gy (1.8 Gy/fx) + 5.4 Gy boost (1.8 Gy/fx) radiation therapy (RT), oral capecitabine 1200mg/m\^2/day 5 days/week during RT, and irinotecan 50 mg/m\^2 IV for 1 hour days 1, 8, 22, 29. Surgery 4-8 weeks after RT. Postoperative chemotherapy beginning Day 1 postoperatively for nine 14-day cycles(folinic acid 400 mg/m\^2 over 2 hours Day 1; 5-fluorouracil bolus 400 mg/m\^2 IV push Day 1 plus 2400 mg/m\^2 IV continuous infusion over 46 hours, beginning Day 1; and oxaliplatin 85 mg/m\^2 IV over 2 hours Day 1) .
Neoadjuvant chemoradiation with irinotecan	Surgery	Patients receive neoadjuvant therapy comprising 45 Gy (1.8 Gy/fx) + 5.4 Gy boost (1.8 Gy/fx) radiation therapy (RT), oral capecitabine 1200mg/m\^2/day 5 days/week during RT, and irinotecan 50 mg/m\^2 IV for 1 hour days 1, 8, 22, 29. Surgery 4-8 weeks after RT. Postoperative chemotherapy beginning Day 1 postoperatively for nine 14-day cycles(folinic acid 400 mg/m\^2 over 2 hours Day 1; 5-fluorouracil bolus 400 mg/m\^2 IV push Day 1 plus 2400 mg/m\^2 IV continuous infusion over 46 hours, beginning Day 1; and oxaliplatin 85 mg/m\^2 IV over 2 hours Day 1) .
Neoadjuvant chemoradiation with irinotecan	Radiation Therapy	Patients receive neoadjuvant therapy comprising 45 Gy (1.8 Gy/fx) + 5.4 Gy boost (1.8 Gy/fx) radiation therapy (RT), oral capecitabine 1200mg/m\^2/day 5 days/week during RT, and irinotecan 50 mg/m\^2 IV for 1 hour days 1, 8, 22, 29. Surgery 4-8 weeks after RT. Postoperative chemotherapy beginning Day 1 postoperatively for nine 14-day cycles(folinic acid 400 mg/m\^2 over 2 hours Day 1; 5-fluorouracil bolus 400 mg/m\^2 IV push Day 1 plus 2400 mg/m\^2 IV continuous infusion over 46 hours, beginning Day 1; and oxaliplatin 85 mg/m\^2 IV over 2 hours Day 1) .
Neoadjuvant chemoradiation with oxaliplatin	Surgery	Patients receive neoadjuvant therapy comprising 45 Gy (1.8 Gy/fx) + 5.4 Gy boost (1.8 Gy/fx) radiation therapy (RT), oral capecitabine 1650mg/m\^2/day 5 days/week during RT, and oxaliplatin 50 mg/m\^2 IV for 2 hours days 1, 8, 15, 22, 29. Surgery 4-8 weeks after RT. Postoperative chemotherapy beginning Day 1 postoperatively for nine 14-day cycles(folinic acid 400 mg/m\^2 over 2 hours Day 1; 5-fluorouracil bolus 400 mg/m\^2 IV push Day 1 plus 2400 mg/m\^2 IV continuous infusion over 46 hours, beginning Day 1; and oxaliplatin 85 mg/m\^2 IV over 2 hours Day 1) .
Neoadjuvant chemoradiation with oxaliplatin	Radiation Therapy	Patients receive neoadjuvant therapy comprising 45 Gy (1.8 Gy/fx) + 5.4 Gy boost (1.8 Gy/fx) radiation therapy (RT), oral capecitabine 1650mg/m\^2/day 5 days/week during RT, and oxaliplatin 50 mg/m\^2 IV for 2 hours days 1, 8, 15, 22, 29. Surgery 4-8 weeks after RT. Postoperative chemotherapy beginning Day 1 postoperatively for nine 14-day cycles(folinic acid 400 mg/m\^2 over 2 hours Day 1; 5-fluorouracil bolus 400 mg/m\^2 IV push Day 1 plus 2400 mg/m\^2 IV continuous infusion over 46 hours, beginning Day 1; and oxaliplatin 85 mg/m\^2 IV over 2 hours Day 1) .
Neoadjuvant chemoradiation with irinotecan	Irinotecan	Patients receive neoadjuvant therapy comprising 45 Gy (1.8 Gy/fx) + 5.4 Gy boost (1.8 Gy/fx) radiation therapy (RT), oral capecitabine 1200mg/m\^2/day 5 days/week during RT, and irinotecan 50 mg/m\^2 IV for 1 hour days 1, 8, 22, 29. Surgery 4-8 weeks after RT. Postoperative chemotherapy beginning Day 1 postoperatively for nine 14-day cycles(folinic acid 400 mg/m\^2 over 2 hours Day 1; 5-fluorouracil bolus 400 mg/m\^2 IV push Day 1 plus 2400 mg/m\^2 IV continuous infusion over 46 hours, beginning Day 1; and oxaliplatin 85 mg/m\^2 IV over 2 hours Day 1) .
Neoadjuvant chemoradiation with irinotecan	Folinic Acid	Patients receive neoadjuvant therapy comprising 45 Gy (1.8 Gy/fx) + 5.4 Gy boost (1.8 Gy/fx) radiation therapy (RT), oral capecitabine 1200mg/m\^2/day 5 days/week during RT, and irinotecan 50 mg/m\^2 IV for 1 hour days 1, 8, 22, 29. Surgery 4-8 weeks after RT. Postoperative chemotherapy beginning Day 1 postoperatively for nine 14-day cycles(folinic acid 400 mg/m\^2 over 2 hours Day 1; 5-fluorouracil bolus 400 mg/m\^2 IV push Day 1 plus 2400 mg/m\^2 IV continuous infusion over 46 hours, beginning Day 1; and oxaliplatin 85 mg/m\^2 IV over 2 hours Day 1) .
Neoadjuvant chemoradiation with irinotecan	Fluorouracil	Patients receive neoadjuvant therapy comprising 45 Gy (1.8 Gy/fx) + 5.4 Gy boost (1.8 Gy/fx) radiation therapy (RT), oral capecitabine 1200mg/m\^2/day 5 days/week during RT, and irinotecan 50 mg/m\^2 IV for 1 hour days 1, 8, 22, 29. Surgery 4-8 weeks after RT. Postoperative chemotherapy beginning Day 1 postoperatively for nine 14-day cycles(folinic acid 400 mg/m\^2 over 2 hours Day 1; 5-fluorouracil bolus 400 mg/m\^2 IV push Day 1 plus 2400 mg/m\^2 IV continuous infusion over 46 hours, beginning Day 1; and oxaliplatin 85 mg/m\^2 IV over 2 hours Day 1) .
Neoadjuvant chemoradiation with irinotecan	Oxaliplatin	Patients receive neoadjuvant therapy comprising 45 Gy (1.8 Gy/fx) + 5.4 Gy boost (1.8 Gy/fx) radiation therapy (RT), oral capecitabine 1200mg/m\^2/day 5 days/week during RT, and irinotecan 50 mg/m\^2 IV for 1 hour days 1, 8, 22, 29. Surgery 4-8 weeks after RT. Postoperative chemotherapy beginning Day 1 postoperatively for nine 14-day cycles(folinic acid 400 mg/m\^2 over 2 hours Day 1; 5-fluorouracil bolus 400 mg/m\^2 IV push Day 1 plus 2400 mg/m\^2 IV continuous infusion over 46 hours, beginning Day 1; and oxaliplatin 85 mg/m\^2 IV over 2 hours Day 1) .
Neoadjuvant chemoradiation with oxaliplatin	Folinic Acid	Patients receive neoadjuvant therapy comprising 45 Gy (1.8 Gy/fx) + 5.4 Gy boost (1.8 Gy/fx) radiation therapy (RT), oral capecitabine 1650mg/m\^2/day 5 days/week during RT, and oxaliplatin 50 mg/m\^2 IV for 2 hours days 1, 8, 15, 22, 29. Surgery 4-8 weeks after RT. Postoperative chemotherapy beginning Day 1 postoperatively for nine 14-day cycles(folinic acid 400 mg/m\^2 over 2 hours Day 1; 5-fluorouracil bolus 400 mg/m\^2 IV push Day 1 plus 2400 mg/m\^2 IV continuous infusion over 46 hours, beginning Day 1; and oxaliplatin 85 mg/m\^2 IV over 2 hours Day 1) .
Neoadjuvant chemoradiation with oxaliplatin	Fluorouracil	Patients receive neoadjuvant therapy comprising 45 Gy (1.8 Gy/fx) + 5.4 Gy boost (1.8 Gy/fx) radiation therapy (RT), oral capecitabine 1650mg/m\^2/day 5 days/week during RT, and oxaliplatin 50 mg/m\^2 IV for 2 hours days 1, 8, 15, 22, 29. Surgery 4-8 weeks after RT. Postoperative chemotherapy beginning Day 1 postoperatively for nine 14-day cycles(folinic acid 400 mg/m\^2 over 2 hours Day 1; 5-fluorouracil bolus 400 mg/m\^2 IV push Day 1 plus 2400 mg/m\^2 IV continuous infusion over 46 hours, beginning Day 1; and oxaliplatin 85 mg/m\^2 IV over 2 hours Day 1) .

Primary Outcome Measures

Name	Time	Method
Pathologic Complete Response Rate	After protocol surgery, approximately 10-16 weeks from randomization based on surgery occurring 4-8 weeks after chemoradiation	A pathologic complete response (pCR) was defined as no evidence of residual cancer histologically; disease progression or death before surgery was considered less than pCR (even without surgical specimen). All cases were reviewed by the study's surgical oncology co-chair for the determination of pCR.; Each arm was first analyzed alone. If the arm had 9 or more pCRs in 48 evaluable pts, then the null hypothesis (H0) of 10% pCR rate would be rejected in favor of the alternative hypothesis of 25%, providing 90% power with a two-sided 10% type I error rate. If both arms reject H0, then statistical selection theory would be used to choose the arm for further study in a phase III trial. If only one arm has acceptable pCR rate, then that arm would be pursued in a phase III trial.

Secondary Outcome Measures

Name	Time	Method
Number of Participants With Grade 3+ Treatment-related Adverse Events Postoperatively	From post-surgery to before chemotherapy (CT), or within 60 days of surgery if no postoperative CT. Approximately 10-16 weeks to 14-22 weeks from randomization based on CT starting 4-6 weeks after surgery.	Highest grade adverse event per subject were counted. Adverse events were graded using the Common Terminology Criteria for Adverse Events (CTCAE) v3.0. Grade refers to the severity of the AE. The CTCAE v3.0 assigns Grades 1 through 5 with unique clinical descriptions of severity for each AE based on this general guideline: Grade 1 Mild AE, Grade 2 Moderate AE, Grade 3 Severe AE, Grade 4 Life-threatening or disabling AE, Grade 5 Death related to AE.
Tumor Marker Evaluation Using Preoperative Tissue Biopsy Specimens and Surgically Resected Tissue Specimens	End of study
Change From Baseline in QLQ-C30 Global Health Status Score at Completion of Chemoradiation	Baseline and completion of chemoradiation, approximately 6-8 weeks from randomization	Global Health Status is calculated from two questions on the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire \[EORTC QLQ\]-C30. The question responses range from 1 "very poor" to 7 "excellent" such that a higher response indicates better quality of life (QOL). The mean of these responses is linearly transformed to a range of 0 (worst) to 100 (best). Change from baseline is calculated as the time point value - baseline value and a decrease from baseline indicates decline in quality of life. A positive number indicates improvement in QOL.
Change From Baseline in QLQ-C30 Global Health Status Score at Completion of Post-operative Chemotherapy	Baseline and completion of post-operative chemotherapy approximately 32 to 40 weeks from randomization based on 18 weeks of post-operative chemotherapy	Global Health Status is calculated from two questions on the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire \[EORTC QLQ\]-C30. The question responses range from 1 "very poor" to 7 "excellent" such that a higher response indicates better quality of life (QOL). The mean of these responses is linearly transformed to a range of 0 (worst) to 100 (best). Change from baseline is calculated as the time point value - baseline value and a decrease from baseline indicates decline in quality of life. A positive number indicates improvement in QOL.
Survival Rate at 4 Years	From randomization to four years	Survival time is defined as time from registration/randomization to the date of death from any cause or last known follow-up (censored). Survival rates are estimated by the Kaplan-Meier method.
Distant Failure Rate at 4 Years	From randomization to four years	Time to distant failure is defined as time from randomization to date of the appearance of distant metastases, last known follow-up (censored), or death without distant failure (competing risk). Distant failure rates are estimated by the cumulative incidence method.
Second Primary Rate at 4 Years	From randomization to four years	Time to second primary is defined as time from randomization to date of the appearance of a second primary cancer, last known follow-up (censored), or death without second primary (competing risk). Second primary rates are estimated by the cumulative incidence method.
Disease-free Survival Rate at 4 Years	From randomization to four years	Disease-free survival time is defined as time from randomization to date of local-regional failure, the appearance of distant metastases, the appearance of a second primary failure, or date of death from any cause/ Disease-free survival rates are estimated by the Kaplan-Meier method. Patients last known to be alive without failure are censored at the date of last contact.
Local-regional Failure Rate at 4 Years	From randomization to four years	Local-regional failure is defined as any of the following: no clinical complete response (cCR) in the primary site and/or nodes at any time after treatment completion (persistence), recurrence and/or progression in the primary site and/or nodes after cCR, and nonprotocol surgery to the primary site after cCR. Time to local-regional failure is defined as time from randomization to date of failure, last known follow-up (censored), or death without local-regional failure (competing risk). Local-regional failure rates are estimated by the cumulative incidence method.
Number of Participants With Grade 3+ Treatment-related Adverse Events	From start of treatment to end of follow-up. Maximum follow-up is 5.2 years.	Highest grade adverse event per subject were counted. Adverse events were graded using the Common Terminology Criteria for Adverse Events (CTCAE) v3.0. Grade refers to the severity of the AE. The CTCAE v3.0 assigns Grades 1 through 5 with unique clinical descriptions of severity for each AE based on this general guideline: Grade 1 Mild AE, Grade 2 Moderate AE, Grade 3 Severe AE, Grade 4 Life-threatening or disabling AE, Grade 5 Death related to AE.
Number of Participants With Grade 3+ Treatment-related Adverse Events Preoperatively	From start of treatment to surgery, approximately 10-16 weeks from randomization based on surgery occurring 4-8 weeks after chemoradiation. If no surgery, then <= 90 days from start of treatment.	Highest grade adverse event per subject were counted. Adverse events were graded using the Common Terminology Criteria for Adverse Events (CTCAE) v3.0. Grade refers to the severity of the AE. The CTCAE v3.0 assigns Grades 1 through 5 with unique clinical descriptions of severity for each AE based on this general guideline: Grade 1 Mild AE, Grade 2 Moderate AE, Grade 3 Severe AE, Grade 4 Life-threatening or disabling AE, Grade 5 Death related to AE.
Change From Baseline in QLQ-C30 Global Health Status Score at Two Years	Baseline and two years	Global Health Status is calculated from two questions on the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire \[EORTC QLQ\]-C30. The question responses range from 1 "very poor" to 7 "excellent" such that a higher response indicates better quality of life (QOL). The mean of these responses is linearly transformed to a range of 0 (worst) to 100 (best). Change from baseline is calculated as the time point value - baseline value and a decrease from baseline indicates decline in quality of life. A negative number indicates improvement in symptoms.
Change From Baseline in EORTC QLQ-CR38 Gastro-intestinal Symptom Score at Completion of Chemoradiation	Baseline and completion of chemoradiation approximately 6-8 weeks from randomization	The gastro-intestinal (GI) symptom score is calculated from five symptom questions on the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire \[EORTC QLQ\]-CR38. The question responses range from 1 (not at all) to 4 (very much) such that a higher response indicates worse symptoms. The mean of these responses is linearly transformed to a range of 0 (best) to 100 (worst). Change from baseline is calculated as the time point value - baseline value and a decrease from baseline indicates improvement in symptoms. A negative number indicates improvement in symptoms.
Change From Baseline in EORTC QLQ-CR38 Gastro-intestinal Symptom Score at Completion of Post-operative Chemotherapy	Baseline and completion of post-operative chemotherapy approximately 32 to 40 weeks from randomization based on 18 weeks of post-operative chemotherapy	The gastro-intestinal (GI) symptom score is calculated from five symptom questions on the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire \[EORTC QLQ\]-CR38. The question responses range from 1 (not at all) to 4 (very much) such that a higher response indicates worse symptoms. The mean of these responses is linearly transformed to a range of 0 (best) to 100 (worst). Change from baseline is calculated as the time point value - baseline value and a decrease from baseline indicates improvement in symptoms. A negative number indicates improvement in symptoms.
Change From Baseline in EORTC QLQ-CR38 Gastro-intestinal Symptom Score at Two Years	Baseline and two years	The gastro-intestinal (GI) symptom score is calculated from five symptom questions on the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire \[EORTC QLQ\]-CR38. The question responses range from 1 (not at all) to 4 (very much) such that a higher response indicates worse symptoms. The mean of these responses is linearly transformed to a range of 0 (best) to 100 (worst). Change from baseline is calculated as the time point value - baseline value and a decrease from baseline indicates improvement in symptoms. A negative number indicates improvement in symptoms.
Change From Baseline in EORTC QLQ-CR38 Defecation Symptom Score at Completion of Chemoradiation	Baseline and completion of chemoradiation, approximately 6-8 weeks from randomization	The defecation symptom score is calculated from seven symptom questions on the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire \[EORTC QLQ\]-CR38. The question responses range from 1 "not at all" to 4 "very much" such that a higher response indicates worse symptoms. The mean of these responses is linearly transformed to a range of 0 (best) to 100 (worst). Change from baseline is calculated as the time point value - baseline value and a decrease from baseline indicates improvement in symptoms. A negative number indicates improvement in symptoms.
Change From Baseline in EORTC QLQ-CR38 Defecation Symptom Score at Post-operative Chemotherapy	Baseline and completion of post-operative chemotherapy, approximately 32 to 40 weeks from randomization based on 18 weeks of post-operative chemotherapy	The defecation symptom score is calculated from seven symptom questions on the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire \[EORTC QLQ\]-CR38. The question responses range from 1 "not at all" to 4 "very much" such that a higher response indicates worse symptoms. The mean of these responses is linearly transformed to a range of 0 (best) to 100 (worst). Change from baseline is calculated as the time point value - baseline value and a decrease from baseline indicates improvement in symptoms. A negative number indicates improvement in symptoms.
Change From Baseline in EORTC QLQ-CR38 Defecation Symptom Score at Two Years	Baseline and two years	The defecation symptom score is calculated from seven symptom questions on the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire \[EORTC QLQ\]-CR38. The question responses range from 1 "not at all" to 4 "very much" such that a higher response indicates worse symptoms. The mean of these responses is linearly transformed to a range of 0 (best) to 100 (worst). Change from baseline is calculated as the time point value - baseline value and a decrease from baseline indicates improvement in symptoms. A negative number indicates improvement in symptoms.

Trial Locations

Locations (5)

Baptist-South Miami Regional Cancer Program; 🇺🇸 Miami, Florida, United States

University of California Davis Cancer Center; 🇺🇸 Sacramento, California, United States

Ingalls Cancer Care Center at Ingalls Memorial Hospital; 🇺🇸 Harvey, Illinois, United States

Fox Chase Virtua Health Cancer Program at Virtua Memorial Hospital Marlton; 🇺🇸 Marlton, New Jersey, United States

Northeast Radiation Oncology Center; 🇺🇸 Dunmore, Pennsylvania, United States