NCT07068763Toboroz2. fázis
Node-Sparing Short-Course Radiation Combined With Capecitabine and PD-1/CTLA-4 for MSS Early Rectal Cancer
Node-Sparing Short-Course Radiation Combined With Capecitabine and PD-1/CTLA-4 for MSS Early Middle and Low Rectal Cancer (mRCAT-E): An Open-label, Single-arm, Prospective Multicenter Clinical Trial
Forrás: ClinicalTrials.gov · Utoljára frissítve: 2026. jan. 6.
Rövid összefoglaló (regiszter, angolul)
This is a single-arm, prospective, multicenter study evaluating a novel neoadjuvant treatment strategy for patients with early, mid-low rectal adenocarcinoma that is microsatellite stable (MSS). Instead of irradiating regional lymph nodes, we deliver short-course radiotherapy (25 Gy in 5 fractions) exclusively to the primary tumor ("lymph-node-sparing" approach), immediately followed by four 3-week cycles of capecitabine plus combined PD-1/CTLA-4 immune checkpoint inhibitors. Two weeks after completing chemo-immunotherapy, tumor response is assessed. Patients who achieve a clinical complete response may enter a "watch-and-wait" program; others will undergo local excision or total mesorectal excision (TME) as appropriate. The primary endpoint is the rate of complete response (clinical and pathological). Secondary endpoints include organ-preservation rate, 3-year local recurrence, 3-year disease-free and overall survival, toxicity, and quality-of-life measures. Results from a pilot study suggest that this regimen may substantially improve complete response rates while reducing radiation-related toxicity, potentially allowing more patients to avoid radical surgery and permanent stoma.
- Állapot (regiszter)
- Toboroz
- Fázis (regiszter)
- 2. fázis
- Vizsgálattípus
- Beavatkozással járó
- Résztvevők száma
- 52 (tervezett)
- Első benyújtás
- 2025. júl. 7.
- Kezdés
- 2025. okt. 9.
- Elsődleges befejezés
- 2026. dec. 31.
- Fő szponzor
- Sir Run Run Shaw Hospital
- Betegségek
- Vastagbélrák
- NCT-szám
- NCT07068763
Mit vállalsz
- Vizsgálat típusa: Beavatkozással járó · 2. fázis
- Tervezett résztvevők: 52
- 2025. okt. 9. és az elsődleges befejezés (2026. dec. 31.) között
- 1 helyszín, 1 országban
- Vizitek és vizsgálatok: kérdezd a vizsgálat csapatát, a regiszter nem sorolja fel őket
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Korábbi kezelés
- Patients with severe concomitant diseases and estimated survival time ≤ 5 years.
- Patients who received immunosuppressive or systemic hormone therapy for immunosuppressive purposes within 1 month prior to the initiation of therapy.
- Contraindications to radiotherapy and chemotherapy.
- Patients who have received any other experimental drug (including immunotherapy) or participated in another interventional clinical trial within 30 days before screening.
Más betegség
- Patients with a previous history of malignant tumors besides rectal cancer.
- Patients with obstruction, perforation, or bleeding that require emergency surgery.
- Allergic to any component of the therapy.
- Vulnerable groups, including mentally ill, cognitively impaired, critically ill patients, minors, pregnant or lactating women, illiterate, etc.
- Other conditions that investigators consider not suitable for this study.
Laborértékek
- Factors leading to study termination, such as alcoholism, drug abuse, other serious illnesses (including psychiatric disorders) requiring combination therapy, and patients with severe laboratory abnormalities. Patients with congenital or acquired immune deficiency (such as HIV infection).
Egyéb
- Patients with distant metastases before enrollment.
- Patients with metastatic regional or non-regional lymph nodes are assessed by MRI or CT.
- Patient not suitable for participating by other concerns of researchers.
Kiket keres a vizsgálat
- Patients who have a strong willingness to preserve the anus and are willing to receive neoadjuvant therapy.
- Male or Female aged 18-80.
- Patients diagnosed with low rectal cancer within 7 cm from the lower edge of the tumor to the anal verge by pelvic MRI and rectal ultrasound, the clinical stage is cT2-3N0M0.
- Histologically confirmed rectal adenocarcinoma; Genetic testing suggests MSI-L or MSS, or tumor biopsy immunohistochemistry reveals pMMR, that is, MSH1, MSH2, MSH6, and PMS2 are all positive.
- Eastern Cooperative Oncology Group (ECOG) score 0-1.
- No previous treatment (including anti-tumor therapy, immunotherapy or pelvic radiation).
- Informed consent form signed.
Életkor a regiszterben: 18 év – 80 év · Nem: nők és férfiak · Egészséges önkénteseket nem fogad
Helyszínek (1)
Helyszínek a regiszter sorrendjében. Ha a profilodba mented a városodat, távolság szerint rendeződnek.
| Helyszín | Város | Ország | Helyszín állapota |
|---|---|---|---|
| Sir Run Run Shaw Hospital | Hangzhou | Kína | Toboroz |
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