ClinicalTrials.gg
Status unknownNCT03448549Updated Mar 6, 2020

SOX Versus XELOX as Adjuvant Chemotherapy for Stage III Colorectal Cancer Patients

A Phase 3 interventional study of Oxaliplatin and Tegafur,gimeracil and oteracil potassium in Colorectal Cancer Stage III and Adjuvant Chemotherapy, sponsored by Peking University Cancer Hospital & Institute. Status unknown at 1 site in China. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2020-03-06.

Sponsored by Peking University Cancer Hospital & Institute · Phase 3, Interventional, and Treatment

The sponsor has not verified this record recently (last verified Mar 2020), so the status shown — last known as Recruiting — may be out of date.

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Phase
Phase 3
Study type
Interventional
Enrollment
1,191
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-13

Among 20 studies in Colorectal Neoplasms by Peking University Cancer Hospital & Institute — 10 open to participants now, 11 under way, none of them phase 3. Colorectal Neoplasms · Peking University Cancer Hospital & Institute.

Planned enrollment
Largest of 10
1,191 · median 57
Started
2018
the only one that year
Phase 3
Only one
of the 20
Registered
2nd of 20
by date

Among the 20 studies in Colorectal Neoplasms by Peking University Cancer Hospital & Institute, this one has the largest planned enrollment of the 10 interventional ones that give a count, is the only one that started in 2018, is the only one in phase 3, and was the 2nd registered.

Colorectal Neoplasms

6,544 studies on the registry are indexed under Colorectal Neoplasms; 1,666 are open to participants now.

Browse Colorectal Neoplasms studies →

Open to participants now

10 of the 20 studies in Colorectal Neoplasms by Peking University Cancer Hospital & Institute are open now, in 1 country. Recruiting first, the newest first:

5 more — sign in →

By country, each count listing its studies:

All 10 open studies →

Where they have run

Who these studies take

Of the 1,184 Colorectal Neoplasms studies recruiting now, 767 (65%) set no upper age limit and 264 (22%) stop at 75 or younger; 48 take children under 18; 124 take healthy volunteers.

This study: 18 Years and older · all sexes · no healthy volunteers.

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02

Study summary

Fluorouracil combined with oxaliplatin are routinely recommended to patients with pathological stage III (p-stage III) colorectal cancer, leading to significant improvement of 5-year disease-free survival and overall survival (approximately 3.4% -4.2%) by by international guidelines such as the National Cancer Comprehensive Network. The Considerable proportion of patients suffer with hand-foot syndrome due to capecitabine as commonly prescribed. Meanwhile as another agent of fluorouracil, tegafur,gimeracil and oteracil potassium (short for TGOP) has been shown with similar effect and less adverse reaction. This study was designed to investigate the short-term and long-term safety and efficacy of TGOP-OX and XELOX regimens in colorectal cancer p-stage III patients who undergo curative surgery and adjuvant chemotherapy, and to explore the compliance and quality of life in patients treated with TGOP-OX regime.

Read the detailed description

In patients with pathological stage III colorectal cancer, capecitabine combined with oxaliplatin, as routinely prescribed for adjuvant chemotherapy prolongs the patient's 5-year disease-free survival and overall survival (about 3.4% -4.2%) and is therefore recommended by the National Comprehensive Cancer Network (NCCN), European Society for Medical Oncology (ESMO) and other international guidelines. Accumulating evidence has shown that a majority of chemotherapy-related side effects were caused by capecitabine, especially in certain patients with hand-foot syndrome lasting a long time. Tegafur,gimeracil and oteracil potassium (TGOP), as another fluorouracil, was shown to be equally effective for colorectal cancer patients as adjuvant chemotherapy. The results of two multicenter randomized controlled trials (Adjuvant Chemotherapy Trial of S-1 for Colon Cancer and Adjuvant Chemotherapy Trial of S-1 for RectalCancer) reported at the American Society of Clinical Oncology (ASCO) 2015 suggested that patients with stage III colorectal cancer treated with tegafur,gimeracil and oteracil potassium (TGOP) instead of capecitabine for adjuvant chemotherapy resulted in comparative effects (5 year Disease free survival: 61.7% -70.2%; 5-year Overall survival: 66.4% -86.0%) with significant lower 3/4 degrees of adverse events. As a compound combined with tegafur, gimeracil and oteracil potassium in a molar ratio of 1: 0.4: 1, it plays an anti-tumor effect as 5-Fu precursor drug, metabolized by liver cytochrome enzyme (P450) system into 5-Fu with less toxicity. The addition of tegafur improves the anti-tumor activity by raising its oral absorption. Gimeracil, as a potent and reversible inhibitor of dihydropyrimidine dehydrogenase (DPD enzyme), largely increases the concentration of 5-Fu in blood and tumor tissue, meanwhile reduces the 5-Fu no active metabolite fluoride-β-alanine (F-β-Ala) production, leading to the decrease of cardiovascular and neural toxicity and the incidence of hand-foot syndrome . Oteracil potassium specifically inhibits the intestinal mucosal cells within the orotate phosphoribosyl transferase (OPRT enzyme), blocking 5-Fu phosphorylation, reducing the digestive tract mucosal damage, thereby lowering the digestive tract toxicity.

Colorectal cancer patients who undergo curative surgery, are enrolled in this study, and randomized into TGOP combined with oxaliplatin (TGOP-OX) and capecitabine combined with oxaliplatin (XELOX) groups. The aim of the study is to confirm that the efficacy of TGOP-OX group as adjuvant chemotherapy is not inferior to that of the XELOX group. Adverse reactions will be systemically collected based on CTCAE 4.0 criteria for each cycle. The quality of life was assessed by the European Cancer Research Organization questionnaires. Patients will undergo close follow-up according to the NCCN recommendation. Minimum follow-up period is designed as 3 years, and each endpoint will be evaluated as each check-point.

03

Conditions studied

  • Colorectal Cancer Stage III
  • Adjuvant Chemotherapy

Keywords

  • Tegafur,gimeracil and oteracil potassium
  • Capecitabine
  • compliance
  • quality of life
  • adverse reaction
  • disease free survival
  • overall survival
04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Signed written consent form;
  • age ≥18 years old;
  • randomization within 2-8 weeks after surgery;
  • Performance status of the US Eastern Cancer Cooperative Group () score 0-1;
  • diagnosed as stage III colon or rectal adenocarcinoma patient;
  • Accept effective measures;
  • women; pregnancy test negative 72 hours before randomization;
  • R0 resection.

Exclusion criteria

Exclusion Criteria:

  • primary tumor (including tumor cells in the ascites or the occurrence of peritoneal metastasis);
  • presence of clinical relevant cardiovascular disease;
  • presence of disease history of central nervous system, or evidence confirmed subjects suffering from central nervous system diseases;
  • presence of grade 3 (or over grade 3) peripheral neuropathy, according to the common adverse event evaluation criteria () v. 3.0;
  • post-operative radiotherapy must be implemented in patients according to researchers' assessment,;
  • presence of any unresolved toxicity left from previous anti-cancer treatment left > grade 2 according to CTCAE, except hair loss;
  • simultaneous use of targeted therapeutic drugs, such as anti-vascular endothelial growth factor (VEGF) monoclonal antibody, or anti-epidermal growth factor receptor (EGFR) monoclonal antibody;
  • or meningeal metastases;
  • Insufficiency of bone marrow reserve capacity, the presence of neutrophils absolute count ≤ 1.5 × 109 / L or count ≤ 75 × 109 / L, or the need for regular blood transfusion in order to maintain ≥ 9g / dL;
  • Serum ≥1.5 × upper limit of reference range (ULRR);
  • (ALT) or aspartate aminotransferase (AST) ≥2.5 × ULRR;
  • serum creatinine ≥ 1.5 × ULRR or formula calculated creatinine clearance ≤ 50ml / min;
  • Evidence of any severe or uncontrolled systemic disease (eg, unstable or decompensated breathing, heart, liver or kidney disease, infection, hypertension, severe arrhythmia, diabetes, massive active bleeding);
  • undergo a major surgery within 14 days prior to entering the study, or surgical incision that has not yet healed completely;
  • women who are pregnant or breastfeeding, or women who are positive for pregnancy before the trial;
  • subjects known to be allergic to oxaliplatin, capecitabine, S-1 or any ingredient of these products;
  • combination of other anti-cancer treatment (including gonadotropin-releasing hormone agonists, anti-cancer Chinese medicine, immunotherapy), except for hormones;
  • In the past 5 years there are other malignant tumor history, except curative treatment of skin basal cell carcinoma and / or cervical cancer in situ;
  • have a significant history of gastrointestinal damage, the researchers judge may significantly affect the absorption of S-1, including dysphagia;
  • subjects known suffering dihydropyrimidine dehydrogenase (DPD) deficiency.
Terms in these criteria, in plain language(14)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

ECOG performance status

A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.

0
Fully active, no restrictions.
1
Limited in strenuous activity, but walking and able to do light work, such as housework or office work.
2
Walking and able to look after yourself, but unable to work; up and about more than half of waking hours.
3
Able to look after yourself only in part; in bed or a chair more than half of waking hours.
4
Unable to look after yourself at all; in bed or a chair all day.

Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.

Histologically or cytologically confirmed

The diagnosis was confirmed by looking at a sample under a microscope: tissue from a biopsy or surgery (histology), or cells from a fluid or needle sample (cytology).

Your pathology report is the document that shows this.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Postmenopausal

Periods have stopped for good: usually no period for 12 months in a row without another medical reason, sometimes confirmed by a blood test (FSH).

Metastases

Cancer that has spread from where it began to other parts of the body. “Metastatic” cancer is cancer that has spread this way.

CTCAE grade

The US National Cancer Institute’s scale of how severe an adverse event is — any unwanted medical event during a study, such as a symptom, an illness or an abnormal test result, whether or not a treatment caused it. Whether it did is judged separately.

1
Mild.
2
Moderate.
3
Severe.
4
Life-threatening.
5
Death due to the event.

“Side effects of earlier treatment resolved to grade 1 or less” means they have settled to mild or gone.

Brain metastases

Cancer deposits in the brain from a cancer that started elsewhere in the body (CNS metastases include the spinal cord).

Studies differ: some leave out any brain metastases, some accept ones treated and stable for some weeks. Check what this study allows.

Platelets

Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.

Hemoglobin (Hb)

The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).

Bilirubin

A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.

Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.

ALT and AST (liver enzymes)

Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.

Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.

Creatinine clearance (CrCl)

How quickly the kidneys clear creatinine, a waste product, from the blood. A study may estimate it from a blood test with age, weight and sex (often by the Cockcroft–Gault formula), or measure it using blood and urine collected over a set time. Given in mL/min; higher is better.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Triple (Care provider, Investigator, Outcomes assessor)
Enrollment
1,191 participants (estimated)

Study arms

  • Experimental
    Group A (TGOP-OX)

    Colorectal cancer patients p-staged III are randomized and assigned with TGOP-OX (Tegafur,gimeracil and oteracil potassium+Oxaliplatin) as adjuvant chemotherapy.

    Drug: Oxaliplatin · Drug: Tegafur,gimeracil and oteracil potassium

  • Active comparator
    Group B (XELOX)

    Colorectal cancer patients p-staged III are randomized and assigned with XELOX (Xeloda+Oxaliplatin) as adjuvant chemotherapy.

    Drug: Oxaliplatin · Drug: Xeloda

Interventions

  • adjuvant chemotherapy

  • DrugTegafur,gimeracil and oteracil potassium

    adjuvant chemotherapy

  • DrugXeloda

    adjuvant chemotherapy

    Also known as: Capecitabine

06

What researchers measure

Primary outcomes

  1. 3 year disease free survival

    3 year disease free survival

    Time frame: 3 years

Secondary outcomes

  1. major adverse event -short term

    short term adverse reaction is defined as the as event within 3 months after chemotherapy,will be graded using the NCI Common Terminology Criteria for Adverse Events (CTCAE) Version 4.0.

    Time frame: 6 month after randomiztion (period during post-operational chemotherapy)

  2. major adverse reaction-long term

    long term adverse reaction is defined as the as event 3 months after chemotherapy will be graded using the NCI Common Terminology Criteria for Adverse Events (CTCAE) Version 4.0.

    Time frame: upto 24 months

  3. 3 year overall survival

    3 year overall survival

    Time frame: 3 years

  4. The accuracy of assessment of preoperative CT images on the stage

    The accuracy of assessment of preoperative CT images on the stage(T and N)

    Time frame: within 3 months before surgery

07

Study locations

1 of 1 sites recruiting
  • Beijing Cancer Hospital
    Beijing, Beijing 100142, China
    Recruiting
    • Nan Chen, M.D.;Ph.D. · Contactchennanpku@126.com · +86 18911956939
    • Aiwen Wu, M.D · Principal investigator
    • Nan Chen, M.D.;Ph.D. · Sub investigator
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started Jan 2018 (actual). Primary completion is estimated for Jan 2021, 36 months after the start.

Of 106 non-industry phase 3 interventional studies under Colorectal Neoplasms, half reached primary completion within 65 months of starting (the median), counting those still running; a quarter within 42 and three quarters within 116. This study's planned 36 months is below that.

Counting every sponsor, half of 175 studies reached it within 50 months; a quarter within 35 and three quarters within 79.

How these figures are worked out, and which studies are left out of them.

Registered
Jun 4, 2017
First posted
Feb 28, 2018
StartActual
Jan 1, 2018
Primary completionEst.
Jan 1, 2021
CompletionEst.
Jan 1, 2024
Last update
Mar 6, 2020
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Mar 6, 2020, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03448549
Responsible party
Aiwen Wu (M.D. PH.D. Chief, Unit III & Ostomy Service, Gastrointestinal Cancer Center, Peking University Cancer Hospital & Institute, Peking University Cancer Hospital & Institute) — Principal investigator
First posted
Feb 28, 2018
Start date
Jan 1, 2018
Primary completion
Jan 1, 2021 (estimated)
Completion
Jan 1, 2024 (estimated)
Last update
Mar 6, 2020

Study contacts

Nan Chen, M.D.;Ph.D
Contact
chennanpku@126.com
+86 18911956939
Aiwen Wu, M.D.
principal investigator · Peking University Cancer Hospital & Institute

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is status unknown, as verified in Mar 2020. You cannot join it, but the record below documents what was studied.

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