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Phase I Trial of S-1 and Weekly Oxaliplatin in Combination with Radiotherapy for Neoadjuvant Therapy of Locally Advanced Rectum Cancer

Phase I Trial of S-1 and Weekly Oxaliplatin in Combination with Radiotherapy for Neoadjuvant Therapy of Locally Advanced Rectum Cancer - SOX-RT(P-I)

Status
Active, not recruiting
Phases
Phase 1
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000002845
Enrollment
12
Registered
2009-12-04
Start date
2009-12-01
Completion date
Unknown
Last updated
2026-06-29

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

Conditions

Rectal cancer of Stage II or III with T4 or lateral lymph node metastasis at the pre-operative diagnosis

Interventions

1)S-1 at a dose of 80mg/m2/day orally in 2 divided doses for 5 days a week during radiotherapy 2) Weekly oxaliplatin at a dose of 40-60mg/m2 intravenously 3) Radiotherapy is delivered a total irradi

Sponsors

National cancer center hosital
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1.Histologically confirmed Rectum cancer (adenocarcinoma, mucinous carcinoma, signet-ring cell carcinoma, adenosquamous carcinoma) 2. Preoperative findings (Must meet all the conditions) i.Main lesion of the tumor is located at the Rs, Ra, Rb, or P ii. Lower tumor margin is below the peritoneal reflection iii. With lateral LN metastasis (internal iliac lymph nodes, obturator lymph nodes or common iliac lymph nodes (Shorter diameter of LN is less than 10 mm or more by pelvic CT or MRI)), or T4 3. No evidence of distant metastasis 4. age:20-75years old 5. ECOG PS:0 or 1 6. With or without target lesion by RECIST 7. Without prior anti-cancer therapy 8. Adequate oral intake 9. Adequate organ function 10.Written IC

Exclusion criteria

Exclusion criteria: 1. Suspected metastasis of external iliac lymph nodes, para-aortic lymph nodes, or inguinal lymph nodes by pelvic MRI. 2. Prior or synchronous invasive malignancy (expect carcinoma in situ or superficial carcinoma which is able to eradicate by local therapy) unless disease free for a minimum of 5 years 3. Evidence of active bacterial or fungal infection (existing fever above 38 degrees centigrade due to infection) 4. Previous history of severe drug-induced allergy 5. Need to treatment with flucytosine, atazanavir sulfate, or warfalin 6. Need systemic administration of corticosteroids 7. Evidence of positive hepatitis B virus surface antigen 8. Evidence of severe watery diarrhea 9. Evidence of uncontrolled diabetic mellitus 10. Evidence of uncontrolled hypertension 11. Need to intervention for heart disease according to the findings of electrocardiogram within the last 28 days 12. Myocardial infarction or unstable angina pectoris within the last 12 months 13. Major surgery within 4 weeks of study enrollment (other than diverting colostomy) 14. Severe comorbidity (ie, bowel paralysis, bowel obstruction, interstitial pneumotitis, pulmonary fibrosis, advanced emphysema, heart disease which is difficult to manage, renal failure, hepatic failure) 15. Pregnant or lactating and woman with childbearing potential who lacked effective contraception 16. Evidence of psychiatric disability interfering with enrollment to clinical trial 17.Patients judged inappropriate for this study by the physicians

Design outcomes

Primary

MeasureTime frame
the MTD and RD of oxaliplatin

Secondary

MeasureTime frame
Adverse events, radiologic and pathologic tumor response, surgical morbidity

Countries

Japan

Contacts

Public ContactMasayuki Ohue

Osaka Medical Center for Cancer and Cardiovascular Diseases Department of Surgery

ohue-ma@mc.pref.osaka.jp

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026