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Study of SIB-IMRT in Combination With 5-FU and Mitomycin-C Among Patients With Locally Advanced Anal Canal Cancer: Efficacy, Safety and Quality of Life

NCT02701088 · Status: ACTIVE_NOT_RECRUITING · Phase: PHASE2 · Type: INTERVENTIONAL · Enrollment: 71

Last updated 2025-09-22

No results posted yet for this study

Summary

Anal canal carcinoma (ACC) represents 1.2% of digestive cancers. Its incidence is increasing. As epidermoid ACC (95% of ACC) are particularly sensitive to radio and chemotherapy, concomitant radio-chemotherapy is the standard treatment of locally advanced ACC, with proven efficacy on locoregional control, anal sphincter preservation, progression-free survival and complete response rate higher than 80%.

Nevertheless, conventional radiotherapy frequently induces significant non-haematological toxicities requiring treatment interruptions. Thus, treatment usually includes a chemotherapy (5-Fluorouracil and Mitomycine-C) and 25 fractions of 1.8 Gy followed by a planned 1-week (or more) interruption and a boost, for a total 54-60 Gy radiation dose over 9 weeks.

Considering the numerous anatomic pelvic structures, ACC has become a localisation of interest for Intensity-Modulated Radiation Therapy (IMRT) associated with less toxicity.

However, IMRT induces grade≥3 cutaneous toxicities requiring irradiation breaks. Dose escalade did not show its interest: 60 Grays remains the standard.

Assuming the deleterious effect of increased overall treatment time on local control and survival in head-and-neck and cervical cancers and the epidermoid histology of ACC, the benefit of no irradiation break on ACC tumour control is of interest.

IMRT offers the possibility to deliver different doses to different target volumes simultaneously by altered fractionation schedule like SIB-IMRT (simultaneously integrated boost-IMRT). Several SIB-IMRT schedules have been retrospectively evaluated. Similar results were observed with moderate doses and schedules delivering higher doses with short interruptions. Nevertheless, standard SIB-IMRT schedule in ACC still not exist.

Conditions

  • Locally Advanced Anal Canal Cancer

Interventions

DRUG

5Fluorouracile and Mitomycin-C

All the patients will receive radiochemotherapy with two cycles of 5FU (1,000 mg/m²/d with 96-h infusion, days 1-5 and 29-33 of SIB-IMRT) and Mitomycin-C (10 mg/m², days 1 and 29).

RADIATION

Simultaneously integrated boost of intensity modulated radiation therapy (SIB-IMRT) by tomotherapy

SIB-IMRT schedule of 61.2 Gy/1.7 Gy to the primary tumor, 57.60 Gy / 1.6 Gy to involved nodes, and 54 / 1.5 Gy to elective pelvic lymph nodes.

Sponsors & Collaborators

  • Accuray Incorporated

    collaborator INDUSTRY

  • Centre Francois Baclesse

    lead OTHER

Principal Investigators

  • Carmen FLORESCU, MD · Centre François Baclesse

Study Design

Allocation
NA
Purpose
TREATMENT
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2015-12-31
Primary Completion
2021-06-25
Completion
2025-12-31

Countries

  • France

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT02701088 on ClinicalTrials.gov