Original research
Health-related quality of life in a randomised phase III study of gemcitabine plus S-1, S-1 alone and gemcitabine alone for locally advanced or metastatic pancreatic cancer: GEST study

https://doi.org/10.1136/esmoopen-2016-000151Get rights and content
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ABSTRACT

Objective

This study was performed to compare health-related quality of life (HRQOL) of gemcitabine plus S-1 (GS), S-1 alone and gemcitabine alone as first-line chemotherapy for locally advanced or metastatic pancreatic cancer in the GEST (Gemcitabine and TS-1 Trial) study and to assess the impacts of adverse events and tumour response on HRQOL.

Methods

Patients were randomly assigned to receive gemcitabine alone (1000 mg/m2 weekly for 3 of 4 weeks), S-1 alone (80, 100 or 120 mg/day twice daily for 4 of 6 weeks) or GS (gemcitabine at 1000 mg/m2 weekly plus S-1 at 60, 80 or 100 mg/day twice daily for 2 of 3 weeks). HRQOL was assessed using the EuroQoL-5D (EQ-5D) questionnaire at baseline and weeks 6, 12, 24, 48 and 72. EQ-5D scores, quality-adjusted life months (QALMs), quality-adjusted progression-free months (QAPFMs) and time until definitive HRQOL deterioration (TUDD) were compared among the three groups. The impacts of adverse events and tumour response on EQ-5D scores were analysed.

Results

Including EQ-5D scores after death as 0, the mean profile was significantly better in the GS than gemcitabine group (difference, 0.069; p=0.003), but not the S-1 group (difference, −0.011; p=0.613). The mean profiles until death were similar in the three groups. QALMs, QAPFMs and TUDD were significantly longer in the GS than gemcitabine group (p<0.001, p<0.001 and p=0.004, respectively), but not the S-1 group (p=0.563, p=0.741 and p=0.701, respectively). Fatigue, anorexia and tumour response were significantly associated with changes in EQ-5D scores.

Conclusions

GS achieved better HRQOL than gemcitabine alone, resulting a good balance between overall survival and HRQOL benefits. S-1 alone provides HRQOL similar to that provided by gemcitabine alone. Preventing fatigue and anorexia and maintaining better response would improve HRQOL.

advanced pancreatic cancer
gemcitabine
health-related quality of life
randomized phase III trial
S-1

Cited by (0)

Contributors: YO, TO, HU, TI, NB, SE, TH, JF, KM, SO, TY, KY, AF, AS and MT were contributed to conception and design. TO, HU, TI, NB, SE, TH, JF, KM, SO, TY, KY, AF, ALC and MT were contributed to collection and assembly of data. YH, YO, TO, HU, TI, NB, SE, TH, JF, KM, SO, TY, KY, AF, KK, AS and MT were contributed to data analysis and interpretation. All authors were contributed to manuscript writing. All authors have approved the final version of the manuscript ahead of submission.

Funding: This work was supported by Taiho Pharmaceutical Co., Ltd. (no grant number is applicable) and TTY Biopharm Co., Ltd. (no grant number is applicable).

Competing interests: YH is contractually employed by J-CRSU. YO has a leadership position at Statcom and J-CRSU; has stock in Statcom; received honoraria from Sanofi, Shionogi, Taiho, Kowa, Chugai and Eisai; and received research funding from Eisai. TO received honoraria from Chugai, Pfizer Japan, Novartis, Taiho, Merck Serono, Eli Lilly Japan, Sumitomo Dainippon, Eisai, Bayer, Yakult, Nobelpharma, Nippon Kayaku, Baxter and Astellas; received rewards for an advisory role from Eli Lilly Japan, Sumitomo Dainippon, Taiho, Ono, Nippon Boehringer Ingelheim, Nano Carrier and Zeria; and received research funding from Chugai, Eli Lilly Japan, Eisai, Novartis, Shizuoka Industry, Takeda Bio Development Center, Yakult, Onco Therapy Science, Otsuka, Taiho, Sceti Medical Labo, Nippon Boehringer Ingelheim, Kowa, Kyowa Hakko Kirin, Merck Serono, Ono, Bayer, Pfizer Japan, AstraZeneca, Sumitomo Dainippon, Nobelpharma, Zeria and Glaxo Smith Kline. HU received honoraria from Taiho and Chugai and received research funding from Taiho, NanoCarrier and Baxalta Japan. TI received rewards for an advisory role from Taiho, Yakult, Baxalta and JCRO; served on the speakers’ bureau of Taiho, Yakult, Daiichi Sankyo, Eisai, Mochida and Fujifilm; and received research funding from Taiho, AstraZeneca, Glaxo Smith Kline, Nihon Zouki, Zeria and Merck Sereno. NB received honoraria from Taiho and Eli Lilly. JF received honoraria from Taiho, Yakult, Eli Lilly Japan, Chugai, Eisai, Ono, Daiichi Sankyo, Merck Serono, Bayer, Novartis, Sumitomo Dainippon, Mitsubishi Tanabe, MSD, AstraZeneca, Sawai, Mochida, Takeda, Pfizer and Astellas; received rewards for an advisory role from Taiho, Yakult, Fujifilm, Chugai, Kyowa Hakko Kirin, Otsuka, Zeria and J-Pharma; served on the speakers’ bureau of Taiho and Yakult; and received research funding from J-Pharma, Taiho, Sumitomo Dainippon, Janssen, Daiichi Sankyo, MSD, Yakult, Takeda, Chugai, Ono, Astellas, Zeria, Novartis, Nanocarrier, Shionogi, Onco Therapy Science, Eli Lilly Japan, Bayer, Bristol-Myers Squibb, Merck Serono, Kyowa Hakko Kirin, Eisai and Mochida. SO received honoraria from Eli Lilly, Taiho, Yakult, Otsuka and Sandoz; received rewards for an advisory role from Boehringer Ingelheim; and received research funding from AstraZeneca. ALC received rewards for an advisory role from Bayer, Eisai, Novartis and Merck KGaA. AS received honoraria from Taiho and received rewards for an advisory role from Taiho. MT received honoraria from Taiho and Eli Lilly and received research funding from Eli Lilly. All remaining authors have declared no conflict of interest.

Ethics approval: Ethics committees or institutional review boards of all participating centres.

Provenance and peer review: Not commissioned; internally peer reviewed.