Gemcitabine versus fluorouracil as first-line therapy for advanced symptomatic pancreas cancer (randomised trial)
N = 126
- Population
- Newly diagnosed advanced symptomatic pancreas cancer
- Design
- Randomised comparison in newly diagnosed advanced symptomatic pancreas cancer after a lead-in period to characterise and stabilise pain. Gemcitabine 1,000 mg/m2 weekly for 7 weeks, then weekly for 3 of every 4 weeks, versus fluorouracil 600 mg/m2 once weekly. Primary efficacy measure: clinical benefit response (composite of pain, Karnofsky performance status and weight). Blinding, phase and registry identifiers are not stated in the abstract; the trial predates registration (no registry id found).
- Primary endpoint
- Clinical benefit response
- Arms
- Gemcitabine (experimental, n = 63): Gemcitabine 1,000 mg/m2 weekly x 7 then 1 week rest, then weekly x 3 every 4 weeks
- Fluorouracil (control, n = 63): Fluorouracil 600 mg/m2 once weekly
- People
- Burris HA 3rd
Δ Clinical benefit response+19 pointsΔ median OS+1.24 monthsΔ 12-month OS+16 points
Show the numbers
| Endpoint | Analysis | Gemcitabine | Fluorouracil | Effect |
|---|---|---|---|---|
| Clinical benefit responseRandomised patients (126)Composite of pain (analgesic consumption, pain intensity), Karnofsky performance status and weight; required a sustained (4 weeks or longer) improvement in at least one parameter without worsening in any other | primaryBurris 1997 | 23.8% | 4.8% | P=.0022 |
| OSRandomised patients (126)Median survival (a further efficacy measure; clinical benefit response was the primary measure) | primaryBurris 1997 | median 5.65 months; 18% at 12 mo | median 4.41 months; 2% at 12 mo | P=.0025P value is for the median survival comparison; no hazard ratio is given in the abstract. Survival at 12 months: 18% versus 2%. |
| Endpoint | Analysis | Gemcitabine | Fluorouracil | Effect |
|---|---|---|---|---|
| Clinical benefit responseRandomised patients (126)Composite of pain (analgesic consumption, pain intensity), Karnofsky performance status and weight; required a sustained (4 weeks or longer) improvement in at least one parameter without worsening in any other | primaryBurris 1997 | 23.8% | 4.8% | P=.0022 |
| OSRandomised patients (126)Median survival (a further efficacy measure; clinical benefit response was the primary measure) | primaryBurris 1997 | median 5.65 months; 18% at 12 mo | median 4.41 months; 2% at 12 mo | P=.0025P value is for the median survival comparison; no hazard ratio is given in the abstract. Survival at 12 months: 18% versus 2%. |
- Gemcitabine (experimental)
- Fluorouracil (control)
Median-only curves assume a constant hazard (exponential) and fit plateaus, as seen with some immunotherapies, poorly.
Data table (modelled values)
| Months | Gemcitabine | Fluorouracil |
|---|---|---|
| 0 | 100.0% | 100.0% |
| 4 | 61.2% | 53.3% |
| 7 | 42.4% | 33.3% |
| 11 | 25.9% | 17.7% |
| 14 | 18.0% | 11.1% |