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- W2890513154 abstract "4010 Background: Sb-PTX is a standard second-line treatment for patients (pts) with AGC. Nab-PTX was developed to avoid the toxicities with use of solvents in sb-PTX and potentially improve efficacy. Based on ABSOLUTE trial, we conducted the additional analysis to evaluate the efficacy and QOL of nab-PTX and sb-PTX. Methods: Pts who were refractory to a fluoropyrimidine-containing first-line treatment were randomly assigned (1:1:1) to receive intravenous q3w nab-PTX (260 mg/m 2 ) on day 1 of a 21-day cycle, and q1w nab-PTX (100 mg/m 2 ) or q1w sb-PTX (80 mg/m 2 ) on days 1, 8, and 15 of a 28-day cycle. The primary objective was to evaluate whether q3w nab-PTX and q1w nab-PTX were non-inferior to q1w sb-PTX in terms of overall survival (OS). Tumor shrinkage at 8 weeks and at the time of the best response were also investigated. For the QOL analysis, EQ-5D score were collected at baseline and every 8 weeks during the first 24 weeks, and thereafter at every 24 weeks. Time to deterioration of EQ-5D score was compared between each arm as a minimally important difference of 0.05. Results: 741 pts were randomly assigned to q3w nab-PTX, q1w nab-PTX, or q1w sb-PTX. Median OS (months) were 10.3, 11.1, and 10.9, respectively. Q1w nab-PTX was non-inferior to q1w sb-PTX (hazard ratio 0.97, 97.5% CI 0.76-1.23; non-inferiority one-sided p = 0.0085), whereas q3w nab-PTX was not non-inferior to q1w sb-PTX (1.06, 95% CI 0.87-1.31; non-inferiority one-sided p = 0.062).The response rate of target lesions at 8 weeks and at the time of the best response (%) were 22.1 and 27.7 for q3w nab-PTX, 28.2 and 34.9 for q1w nab-PTX, and 18.0 and 25.6 for q1w sb-PTX. Median time to deterioration of EQ-5D score (months) were 2.1 in q3w nab-PTX, 3.8 in q1w nab-PTX, and 3.7 in q1w sb-PTX. Conclusions: Q1w nab-PTX was non-inferior to q1w sb-PTX in terms of OS. In addition, q1w nab-PTX showed favorable effect in comparison with q1w sb-PTX in terms of response rate of target lesions and time at best response. QOL was similar between q1w nab-PTX and q1w sb-PTX. These results suggest that q1w nab-PTX is a useful second-line treatment for pts with AGC. Clinical trial information: 132059." @default.
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- W2890513154 date "2017-05-20" @default.
- W2890513154 modified "2023-09-23" @default.
- W2890513154 title "ABSOLUTE: A phase 3 trial of nanoparticle albumin-bound paclitaxel (nab-PTX) versus solvent-based paclitaxel (sb-PTX) in patients with pre-treated advanced gastric cancer (AGC)—Efficacy and QOL results." @default.
- W2890513154 doi "https://doi.org/10.1200/jco.2017.35.15_suppl.4010" @default.
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