Phase III Study in First-line Treatment of Patients With Metastatic Colorectal Cancer Who Are Not Candidate for Intensive Therapy.

Inclusion Criteria: 1. Has definitive histologically confirmed adenocarcinoma of the colon or rectum (all other histological types are excluded). Primary tumour localisation must be known. 2. RAS status based on local biological assessment of tumour biopsy must be available. If RAS status is not available at the time of randomisation, tumour biopsy must be available for RAS status determination (based on local biological assessment). 3. Patient is not a candidate for standard full dose combination chemotherapy with irinotecan or oxaliplatin 4. Patient is not a candidate for curative resection of metastatic lesions. 5. No previous systemic anticancer therapy for unresectable metastatic colorectal cancer. 6. ECOG (Eastern Cooperative Oncology Group) performance status ≤2. 7. Adequate organ function (renal, haematological, hepatic, coagulation) as described in the study protocol' Exclusion Criteria: 8. Pregnancy, breastfeeding or possibility of becoming pregnant during the study. 9. Participation in another interventional study within 4 weeks prior to the randomisation . 10. Patients who have not recovered from clinically relevant non-hematologic CTCAE grade ≥ 3 toxicity of previous anticancer therapy prior to the randomisation. 11. Symptomatic central nervous system metastases. 12. Major surgery within 4 weeks prior to the randomisation. Exclusion criteria related to S 95005 administration: 13. History of allergic reactions attributed to compounds of similar composition to S 95005 or any of its excipients. 14. Any contraindication present in the SmPC of trifluridine/tipiracil Exclusion criteria related to bevacizumab administration: 15. Any contraindication present in the SmPC of bevacizumab Exclusion criteria related to capecitabine administration: 16. Any contraindication present in the SmPC of capecitabine