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CompletedNCT03443492PancreasUpdated Dec 30, 2025

SLOG vs mFOLFIRINOX as the First-line Treatment in Locally Advanced Uncresectable or Metastatic Pancreatic Cancer

A Phase 2 interventional study of S-1 and Leucovorin(oral ) in Locally Advanced or Metastatic Pancreatic Cancer, sponsored by National Health Research Institutes, Taiwan. Completed at 1 site in Taiwan. Open to participants aged 20 Years to 80 Years. Per ClinicalTrials.gov, last updated 2025-12-30.

Sponsored by National Health Research Institutes, Taiwan · Phase 2, Interventional, and Treatment

Phase
Phase 2
Study type
Interventional
Enrollment
130
Allocation
Randomized
Ages
20 Years to 80 Years
Sex
All
01

Study summary

A randomized phase II study to compare the efficacy and safety of SLOG or mFOLFIRINOX as a first-line treatment for patients with locally advanced and metastatic pancreatic cancer.

Read the detailed description

A total 130 patients (65 patients per arm) with locally advanced or metastatic pancreatic cancer will be enrolled in multiple hospitals of Taiwan. The primary endpoint is progression-free survival. The secondary endpoints are objective response rate, overall survival and safety profiles.

02

Conditions studied

  • Locally Advanced or Metastatic Pancreatic Cancer
03

In context

Pancreatic Neoplasms

3,896 studies on the registry are indexed under Pancreatic Neoplasms; 1,007 are open to participants now.

This study's enrollment of 130 is above the median of 47 across 2,932 interventional studies indexed under Pancreatic Neoplasms.

Browse Pancreatic Neoplasms studies →

Lead sponsor

National Health Research Institutes, Taiwan is the lead sponsor of 128 studies on the registry; 30 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
20 Years to 80 Years
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

  1. Patients must have cyto-/ confirmed, locally advanced unresectable or adenocarcinoma of the pancreas (mPAC). Patients who have disease measurable or evaluable on x-ray, CT scan, or physical examination are eligible.
  2. Patients must have no history of prior chemotherapy for PAC, except those delivered as setting that completed at least 6 months before documentation of recurrence by imaging study.
  3. Patients with prior radiotherapy are eligible if the irradiated area does not involve the only source of measurable / evaluable disease.
  4. Patients' baseline performance status must be 1.
  5. Patients' 12 weeks or greater.
  6. Patients' age 20 and 80.
  7. Patients with biliary obstruction and adequate drainage procedures before enrollment are eligible.
  8. Patients must agree to have indwelling venous catheter implanted.
  9. Women or men and their partners of should agree to use an effective method.
  10. All patients must be informed of the nature of this study and must sign and give written .

Exclusion criteria

Exclusion Criteria:

  1. Patients who have major abdominal surgery, radiotherapy or other investigating agents within 4 weeks are not eligible. Patients who have palliative radiotherapy for bony will be eligible 2 weeks after the completion of radiotherapy.
  2. Patients with central nervous system metastasis
  3. Patients with active infection
  4. Pregnant or breast-nursing women
  5. Patients with active cardiopulmonary disease or history of ischemic heart disease
  6. Patients who have peripheral neuropathy > Grade I of any etiology
  7. Patients who have serious concomitant systemic disorders incompatible with the study, i.e. poorly controlled diabetes mellitus, auto-immune disorders, cirrhosis of the liver, and the rest will be at the discretion of in-charged investigator.
  8. Patients who have other prior or concurrent except for adequately treated in situ carcinoma of cervix or adequately treated basal cell carcinoma of skin, or any malignancy remains disease-free for 3 or more years after initial curative treatment
  9. Patients who are under biologic treatment for their malignancy
  10. Laboratory tests (hematology, chemistry) outside specified limits:

    1. WBC ≤ 3 x 10³/mm³
    2. ANC ≤ 1.5 x 10³/mm³
    3. ≤ 100.000/mm³
    4. ≤ 9.0 g/dl (≤ 5.6 mmol/l)
    5. \< 60 mL/min
    6. and/or ALT > 2.5 x ; for patients with significant liver metastasis AST and/or ALT > 5 x ULN
    7. Total > 2 x ULN
    8. Albumin \< 2.5 g/dL
Terms in these criteria, in plain language(16)

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.

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.

Metastases

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

Adjuvant and neoadjuvant

Neoadjuvant treatment is given before the main treatment (usually surgery), often to shrink a tumour. Adjuvant treatment is given after it, to lower the chance of the cancer coming back.

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.

Life expectancy

The study doctor’s estimate of how long someone is likely to live. Criteria use it so that people can stay in the study long enough for it to answer its question.

Reproductive potential

Able to have children. For women this usually means from the first period until menopause, unless permanently unable to through surgery; for men, unless permanently sterile. Read who the line is about — participants, women, men, or their partners.

Criteria about it usually ask for contraception during the study and for a time after it.

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.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

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).

GFR and eGFR (kidney filtering)

GFR (glomerular filtration rate) is how much blood the kidneys filter each minute. It is usually estimated from a blood test — eGFR, by formulas such as CKD-EPI or MDRD — and some studies ask for it to be measured directly instead. Usually given in mL/min/1.73 m².

Check the method, the units and the minimum the study states. A value of 90 or above is in the normal-or-high range, but kidney damage can show in other tests too.

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.

ULN (upper limit of normal)

The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.

“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.

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.

05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
130 participants (actual)

Study arms

  • Experimental
    SLOG

    800 mg/m2 gemcitabine at a fixed rate of 10 mg/m2/min followed by a 2-hour intravenous infusion of oxaliplatin on day 1 plus twice daily oral S-1 80-120 mg/day (based on BSA) and oral leucovorin 30 mg twice a day on day 1 to day 7, every 14 days as a cycle

    Drug: S-1 · Drug: Leucovorin(oral ) · Drug: Gemcitabine · Drug: Oxaliplatin

  • Experimental
    mFOLFIRINOX

    oxaliplatin at a dose of 85 mg/m2, given as a 2-hour infusion, with the addition, after 30 minutes, of irinotecan at a dose of 150 mg/m2, given as a 90-minute infusion. The treatment was immediately followed by a continuous intravenous infusion via central venous catheter of leucovorin 400 mg/m2 given as a 2-hour infusion and 5-FU 2400 mg/m2 over a 46-hour period on day 1 every 14 days/cycle.

    Drug: Oxaliplatin · Drug: Irinotecan · Drug: 5-FU · Drug: Leucovorin(IV)

Interventions

  • DrugS-1

    Drug pages: Tegafur · Gimeracil · Oxonic Acid

    Intervention is administered to patients in this Arm.

  • Intervention is administered to patients in this Arm.

  • Intervention is administered to patients in this Arm.

  • Intervention is administered to patients in this Arm.

  • Intervention is administered to patients in this Arm.

  • Drug5-FU

    Intervention is administered to patients in this Arm.

  • Intervention is administered to patients in this Arm.

06

What researchers measure

Primary outcomes

  1. progression free survival (PFS)

    The 6-month PFS rates of the two arms are assumed to be 60% (SLOG) vs. 45% (mFOLFIRINOX)

    Time frame: Since this is an exploratory trial, it takes a sample size of 61 patients per arm entered in 2 years with a minimum 1 year of follow up to reach 75% power with type I error of 10% under the assumptions of exponential survival functions.

07

Study locations

1 site
  • National Institute of Cancer Research
    Miaoli, Taiwan
08

References and documents

Publications

  • Chiang NJ, Tsai KK, Hsiao CF, Yang SH, Hsiao HH, Shen WC, Hsu C, Lin YL, Chen JS, Shan YS, Chen LT. A multicenter, phase I/II trial of biweekly S-1, leucovorin, oxaliplatin and gemcitabine in metastatic pancreatic adenocarcinoma-TCOG T1211 study. Eur J Cancer. 2020 Jan;124:123-130. doi: 10.1016/j.ejca.2019.10.023. Epub 2019 Nov 22. PubMed 31765987 ↗
09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Dec 30, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03443492
Responsible party
Sponsor
First posted
Feb 23, 2018
Start date
Mar 26, 2018
Primary completion
Nov 30, 2019
Completion
Nov 30, 2019
Last update
Dec 30, 2025

Study contacts

Chen Li-Tzong
study chair · National Insitute of Cancer Research

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 completed, as verified in Nov 2019. You cannot join it, but the record below documents what was studied.

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Discussion

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Studies of the drugs tested here: Tegafur · Gimeracil · Oxonic Acid · Leucovorin · Gemcitabine · Irinotecan · Fluorouracil

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