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Chemoradiotherapy Combined With or Without PD-1 Blockade in Anal Canal Squamous Carcinoma Patients

A Phase 3, Multicenter, Double-Blind Randomized Study of Mitomycin, 5-Fluorouracil and IMRT Combined With or Without Anti-PD-1 in Patients With Locally Advanced Anal Canal Squamous Carcinoma

Status
UNKNOWN
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05374252
Enrollment
102
Registered
2022-05-16
Start date
2022-05-07
Completion date
2025-12-31
Last updated
2022-05-16

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Anal Canal Cancer, Anal Canal Cancer Stage III, Anal Cancer, Anal Squamous Cell Carcinoma

Keywords

Anal Squamous Cell Carcinoma, Radiochemotherapy, PD-1

Brief summary

This is a phase III, multi-center, double-blind randomized controlled trial assessing the efficacy and safety of concurrent mitomycin C/5-Fu chemotherapy and long-course IMRT combined with PD-1 antibody Sintilimab for locally advanced anal canal squamous carcinoma patients, by comparing an experiment group (traditional chemoradiotherapy with PD-1 antibody Sintilimab) with a control group (traditional treatment without Sintilimab).

Interventions

DRUGPD-1 inhibitor

Two cycles of concurrent PD-1 antibody sintilimab combined with mytomicin C, 5-fluorouracil and IMRT, followed by adjuvant sintilimab for six months

RADIATIONconcurrent chemoradiotherapy

Two cycles of concurrent mytomicin C and 5-fluorouracil combined with IMRT

Sponsors

Sixth Affiliated Hospital, Sun Yat-sen University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 75 Years
Healthy volunteers
No

Inclusion criteria

1. Histology identified anal canal squamous carcinoma, 2. Aged 18 to 75, 3. Clinical staging III, Eastern Cooperative Oncology Group 0-2 score, 4. The Staging method: All patients undergoing rectal anus palpation, high resolution MRI and chest-abdominal enhanced CT, clinical data should be re-evaluated and inclusive by center evaluation group when there is contradictory staging, distant metastasis were excluded by chest-abdominal enhanced CT and pelvic enhanced MRI, 5. No previous anal canal surgery or anal tumor resection (except for biopsy), 6. No previous chemotherapy or pelvic radiotherapy history, 7. No biopharmaceutical treatment history (such as monoclonal antibody), immunotherapy (such as anti PD-1antibody, anti PD-L1 antibody, anti PD-L2 antibody or anti CTLA-4), or other research drug treatment in the previous 5 years, 8. Adequate bone marrow, liver, and kidney function, 9. Clinical complete response (cCR) (Chest, abdominal and pelvic enhanced CT or pelvic enhanced MRI or PET/CT), 10. Informed consent assigned, Final inclusion criteria, 11. Non-pregnant or breast-feeding women, 12. No other malignant disease within 5 years before diagnosis of anal cancer squamous carcinoma (except endocervical cancer in situ or skin basal cell carcinoma which had been cured); no other malignant disease beside anal cancer squamous carcinoma, 13. No other serious disease leading to shortened survival.

Exclusion criteria

1. Diagnosed as stage I-II and well differentiated squamous cell carcinoma, 2. Distant metastasis, 3. Received radiation therapy in abdominal or pelvic regions, 4. Pregnant, lactating woman patient or fertile but lacks adequate contraceptives, 5. Arrhythmia need anti-arrhythmia treatment (except β-blocking agent or Digoxin), symptomatic coronary heart disease or myocardial ischemia (myocardial infarction within 6 months) or congestive heart-failure (CHF) \> New York Heart Association grade II, 6. Severe hypertension not well controlled by drugs, 7. Active phase of chronic hepatitis B or hepatitis C (high copies of virus DNA), 8. Patients with active tuberculosis (TB) are receiving anti-tuberculosis treatment or have received anti-tuberculosis treatment within 1 year before screening, 9. Other active clinical severe infection (NCI-CTCAE (version 4.0) ), 10. Dyscrasia, organ dysfunction, 11. Known or suspicious allergy to any research-related drugs, 12. Epilepsy needs treatments (Steroid or anti-epilepsy therapy), 13. Other malignant tumor history within 5 years, 14. Drug abuse and medical, psychological, or social factors that may interfere with patients' participation in the study or affect the evaluation of the study, 15. Patients have any active autoimmune diseases or a history of autoimmune diseases (including but not restricted: interstitial pneumonia, uveitis, enteritis, hepatitis, hypophysitis, nephritis, hyperthyroidism and decreased thyroid function; patients with vitiligo or with complete remission of asthma in childhood and without any intervention in adulthood may be included; patients with asthma requiring bronchodilators intervention are not included, 16. Any anti-infection vaccine 4 weeks before inclusion, 17. Long-term exposure to immune-suppressor, combination of systemic or topical use of corticosteroids (dose\>10mg/day prednisolone or equivalent hormone), 18. Any unstable state might endanger the patients' safety and compliance, 19. Refuses to sign informed consent.

Design outcomes

Primary

MeasureTime frameDescription
Progression free survivalfrom the end of treatment to 3 years after treatmentprogression free survival
Overall survivalfrom the end of treatment to 3 years after treatmentoverall survival
cCR rate6 months after treatmentcCR rate 6 months after treatment

Secondary

MeasureTime frameDescription
Colostomy rate2 yearcolostomy rate
Local recurrence ratefrom the end of treatment to 3 years after treatmentlocal recurrence rate
Acute toxicitiesfrom the start of treatment to 3 months after treatmentacute toxicities according to the NCI CTCAE (version 4.0)
Incidence rate of Grade ≥3 PD-1monoclonal antibody-related adverse events1 yearIncidence rate of Grade ≥3 PD-1monoclonal antibody-related adverse events
Distant metastasis ratefrom the end of treatment to 3 years after treatmentdistant metastasis rate
cCR rate3 months after treatmentcCR rate 3 months after treatment
The rate of late toxicity according to the RTOG/EORTC scale3 yearsThe rate of late toxicity according to the RTOG/EORTC scale

Countries

China

Contacts

Primary ContactXiang-bo Wan, PhD
wanxbo@mail.sysu.edu.cn+86-13826017157
Backup ContactFang He, MD
hefang23@mail.sysu.edu.cn+86-20-85655905

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026