A phase II study of capecitabine and irinotecan in combination with concurrent pelvic radiotherapy (CapIri-RT) as neoadjuvant treatment of locally advanced rectal cancer

Br J Cancer. 2007 Mar 26;96(6):912-7. doi: 10.1038/sj.bjc.6603645. Epub 2007 Feb 27.


We sought to evaluate the efficacy and safety data of a combination regimen using weekly irinotecan in combination with capecitabine and concurrent radiotherapy (CapIri-RT) as neoadjuvant treatment in rectal cancer in a phase-II trial. Patients with rectal cancer clinical stages T3/4 Nx or N+ were recruited to receive irinotecan (50 mg m(-2) weekly) and capecitabine (500 mg m(-2) bid days 1-38) with a concurrent RT dose of 50.4 Gy. Surgery was scheduled 4-6 weeks after the completion of chemoradiation. A total of 36 patients (median age 62 years; m/f: 27:9) including three patients with local recurrence were enclosed onto the trial. The median distance of the tumour from the anal verge was 5 cm. The main toxicity observed was (NCI-CTC grades 1/2/3/4 (n)): Anaemia 23/9/-/-; leucocytopenia 12/7/7/2, diarrhoea 13/15/4/-, nausea/vomiting 9/10/2/-, and increased activity of transaminases 3/3/1/-. One patient had a reversible episode of ventricular fibrillation during chemoradiation, most probably caused by capecitabine. The relative dose intensity was (median/mean (%)): irinotecan 95/91, capecitabine 100/92). Thirty-four patients underwent surgery (anterior resection n=25; abdomino-perineal resection n=6; Hartmann's procedure n=3). R0-resection was accomplished in all patients. Two patients died in the postoperative course from septic complications. Pathological complete remission was observed in five out of 34 resected patients (15%), and nine patients showed microfoci of residual tumour (26%). After a median follow-up of 28 months one patient had developed a local recurrence, and five patients distant metastases. Three-year overall survival for all patients with surgery (excluding three patients treated for local relapse or with primary metastatic disease) was 80%. In summary, preoperative chemoradiation with CapIri-RT exhibits promising efficacy whereas showing managable toxicity. The local recurrence and distant failure rates observed after a median 28 months are low compared with standard 5-fluorouracil based therapy.

Publication types

  • Clinical Trial, Phase II

MeSH terms

  • Adenocarcinoma / drug therapy*
  • Adenocarcinoma / pathology
  • Adenocarcinoma / radiotherapy*
  • Adenocarcinoma / surgery
  • Adult
  • Aged
  • Aged, 80 and over
  • Antineoplastic Combined Chemotherapy Protocols / adverse effects
  • Antineoplastic Combined Chemotherapy Protocols / therapeutic use*
  • Camptothecin / administration & dosage
  • Camptothecin / adverse effects
  • Camptothecin / analogs & derivatives
  • Capecitabine
  • Deoxycytidine / administration & dosage
  • Deoxycytidine / adverse effects
  • Deoxycytidine / analogs & derivatives
  • Female
  • Fluorouracil / administration & dosage
  • Fluorouracil / adverse effects
  • Fluorouracil / analogs & derivatives
  • Follow-Up Studies
  • Humans
  • Irinotecan
  • Male
  • Middle Aged
  • Neoadjuvant Therapy
  • Neoplasm Recurrence, Local / drug therapy
  • Neoplasm Recurrence, Local / radiotherapy
  • Rectal Neoplasms / drug therapy*
  • Rectal Neoplasms / pathology
  • Rectal Neoplasms / radiotherapy*
  • Rectal Neoplasms / surgery


  • Deoxycytidine
  • Capecitabine
  • Irinotecan
  • Fluorouracil
  • Camptothecin