NCT03813641

RALOX or CAPOX + Bevacizumab in the First-line Treatment of Advanced CRC(ROCB Study)

Phase Ⅱ Clinical Study of RALOX or CAPOX Combined With Bevacizumab in the First-line Treatment of Advanced Colorectal Cancer

• Status: Unknown
• Phase: Phase 2
• Study type: Interventional
• Enrollment: 100 (estimated)
• Sponsor: Shenzhen People's Hospital · Academic / Other
• Sex: All
• Age: 18 Years – 75 Years
• Healthy volunteers: Not accepted

Summary

Raltitrexed is an inhibitor of thymidylate synthase.As a folate antimetabolite drug, raltitrexed has been used in treatment of colorectal cancer(CRC) since 1998, and also used in malignant mesothelioma.Several phase III studies performed in patients with advanced CRC showed that it is as effective as 5-fluorouracil(5-FU) /leucovorin(LV) with regard to response rates and survival. The combination of raltitrexed with oxaliplatin shows response rates of 41%-54% and median survivals of 14.6-14.8 months, which are comparable to those achieved with 5-FU/LV combination with oxaliplatin. This study discussed the efficacy and safety of raltitrexed-oxaliplatin(RALOX) combined with bevacizumab or capecitabine-oxaliplatin(CAPOX) combined with bevacizumab in first-line treatment of patients with advanced colorectal cancer who could not undergo radical surgery. The main endpoint will be progression free survival (PFS). The secondary endpoints will be overall survival, objective response rate and disease control rate (OS,ORR and DCR).It is expected that raltitrexed may be one of options for the treatment of advanced CRC in the first-line setting.

Detailed description

According to the inclusion and exclusion criteria, the patients will be randomly divided into two groups: the experimental group (group A) will be administered with raltitrexed 3mg/m2 intravenously combined with oxaliplatin and bevacizumab, repeated every 21 days. The control group (group B) will be administered with orally capecitabine (1000mg/m2, d 1-14) combined with oxaliplatin and bevacizumab, repeated every 21 days. After 8 cycles of treatments, if evaluated as complete response(CR),partial response(PR) or stable disease(SD), CRC patients will go into maintenance therapy wtih raltitrexed combined with bevacizumab in group A or capecitabine combined with bevacizumab in group B respectively, ended in disease progression(PD) , symptoms deterioration, unacceptable toxicity, death or withdrawal of consent (whichever occurs first). The radiological efficacy will be evaluated every 6 weeks (2 treatment cycles) and non-PD (PD criteria referring to RECIST 1.1 criteria) patients will continue to be treated until the cancer progression or the patient's intolerable toxicity or death. Toxic side effects and quality of life will be assessed at the same time. Follow up participants and analyse primary endpoint (PFS) and secondary endpoints (OS,ORR and DCR).The causes of confirmed missing data in the trial should be recorded in detail to determine the mechanism of missing data and choose the suitable missing data handling methods.

Conditions

• Colorectal Cancer

Interventions

Type	Name	Description
DRUG	Raltitrexed	Experimental: Oxaliplatin + Raltitrexed + Bevacizumab The above schemes are repeated every three weeks. After 8 cycles, such as CR, PR or SD, the regimen is changed to Raltitrexed (3mg/m2, intravenous drip for 15 minutes, d1)+bevacizumab (7.5mg/kg, intravenous drip, d1). The regimen is repeated every 3 weeks until the disease progresses.
DRUG	Capecitabine	Other: Oxaliplatin + Capecitabine + Bevacizumab The above schemes are repeated every three weeks. After 8 cycles, such as CR, PR or SD, the regimen is changed to Capecitabine (1000mg/m2 po. d1-14)+bevacizumab (7.5mg/kg, intravenous drip, d1). The regimen is repeated every 3 weeks until the disease progresses.

Timeline

• Start date: 2019-01-28
• Primary completion: 2021-02-28
• Completion: 2021-12-31
• First posted: 2019-01-23
• Last updated: 2019-09-09

Locations

1 site across 1 country: China