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Randomized Controlled Trial
. 2020 Jun;122(12):1760-1768.
doi: 10.1038/s41416-020-0846-2. Epub 2020 Apr 30.

Scheduling nab-paclitaxel combined with gemcitabine as first-line treatment for metastatic pancreatic adenocarcinoma

P G Corrie  1 , W Qian  2 , B Basu  2   3 , J W Valle  4 , S Falk  5 , C Lwuji  6 , H Wasan  7 , D Palmer  8 , M Scott-Brown  9 , J Wadsley  10 , S Arif  11 , J Bridgewater  12 , D Propper  13 , R Gillmore  14 , A Gopinathan  3 , R Skells  2 , P Bundi  2 , R Brais  2 , K Dalchau  2 , L Bax  2 , A Chhabra  2 , A Machin  2 , A Dayim  2 , K McAdam  15 , S Cummins  16 , L Wall  17 , R Ellis  18 , A Anthoney  19 , J Evans  20 , Y T Ma  21 , C Isherwood  3 , A Neesse  22 , D Tuveson  23 , D I Jodrell  2   3
Affiliations
Randomized Controlled Trial

Scheduling nab-paclitaxel combined with gemcitabine as first-line treatment for metastatic pancreatic adenocarcinoma

P G Corrie et al. Br J Cancer. 2020 Jun.

Abstract

Background: Nab-paclitaxel plus gemcitabine (nabP+gemcitabine) offers modest survival gains for patients with metastatic pancreatic ductal adenocarcinoma (PDAC). Sequential scheduling of nabP+gemcitabine in a PDAC mouse model improved efficacy; this hypothesis was tested in a clinical trial.

Methods: Patients with previously untreated metastatic PDAC were randomised to receive nabP+gemcitabine administered either concomitantly on the same day, or sequentially, with gemcitabine administered 24 h after nabP. The primary outcome measure was progression-free survival (PFS). Secondary outcome measures were objective response rate (ORR), overall survival (OS), safety, quality of life (QoL) and predictive biomarkers.

Results: In total, 71 patients received sequential (SEQ) and 75 concomitant (CON) treatment. Six-month PFS was 46% with SEQ and 32% with CON scheduling. Median PFS (5.6 versus 4.0 months, hazard ratio [HR] 0.67, 95% confidence interval [95% CI] 0.47-0.95, p = 0.022) and ORR (52% versus 31%, p = 0.023) favoured the SEQ arm; median OS was 10.2 versus 8.2 months (HR 0.93, 95% CI 0.65-1.33, p = 0.70). CTCAE Grade ≥3 neutropaenia incidence doubled with SEQ therapy but was not detrimental to QoL. Strongly positive tumour epithelial cytidine deaminase (CDA) expression favoured benefit from SEQ therapy (PFS HR 0.31, 95% CI 0.13-0.70).

Conclusions: SEQ delivery of nabP+gemcitabine improved PFS and ORR, with manageable toxicity, but did not significantly improve OS.

Clinical trial registration: ISRCTN71070888; ClinialTrials.gov (NCT03529175).

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Conflict of interest statement

The following conflicts of interest are declared, which were incurred during the conduct of the SIEGE: Dr Corrie was the lead recipient of the SIEGE research grant from Celgene, which was paid to Cambridge University NHS Foundation Trust. Dr Basu and Dr Propper received funding from Celgene for research work outside of the SIEGE trial. Professor Bridgewater, Dr Corrie, Professor Evans, Professor Palmer, Professor Wadsley and Dr Wassan report personal fees from Celgene for advisory boards and/or speaker fees. Dr Falk, Professor Valle and Dr Basu received a travel grant from Celgene. Dr Propper was an expert witness when nab-Paclitaxel was submitted for NICE evaluation in 2017. Professor Evans is an editor of the clinical subject section of the British Journal of Cancer. Dr Falk and Dr Basu are Editorial Board members of the British Journal of Cancer. The remaining authors declare no competing interests.

Figures

Fig. 1
Fig. 1. Kaplan-Meier curves of progression-free survival (PFS) and overall survival (OS).
a, c PFS and (b, d) OS for intention-to treat (a, b) and evaluable (c, d) patients.
Fig. 2
Fig. 2. Changes from baseline in EORTC QLQ-C30 QoL scores associated with treatment.
a Global health status (b) QoL subscales (c) symptoms.
Fig. 3
Fig. 3. Box-plots demonstrating that baseline (pre-treatment) cytidine deaminase (CDA) activity did not predict for objective response or toxicity experienced by individual patients during treatment.
a objective response (p of Kruskal–Wallis test = 0.62), (b) worst CTCAE grade experienced (p of Kruskal–Wallis test = 0.63) and (c) worst CTCAE neutropaenia grade experienced (p of Kruskal–Wallis test = 0.38).
See this image and copyright information in PMC

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