Heterogeneity of first-line palliative systemic treatment in synchronous metastatic esophagogastric cancer patients: A real-world evidence study

Willemieke P. M. Dijksterhuis, Rob H. A. Verhoeven, Marije Slingerland, Nadia Haj Mohammad, Judith de Vos-Geelen, Laurens Beerepoot, Theo van Voorthuizen, Geert-Jan Creemers, Martijn G. H. van Oijen, Hanneke W. M. van Laarhoven*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

18 Citations (Web of Science)

Abstract

The optimal first-line palliative systemic treatment strategy for metastatic esophagogastric cancer is not well defined. The aim of our study was to explore real-world use of first-line systemic treatment in esophagogastric cancer and assess the effect of treatment strategy on overall survival (OS), time to failure (TTF) of first-line treatment and toxicity. We selected synchronous metastatic esophagogastric cancer patients treated with systemic therapy (2010-2016) from the nationwide Netherlands Cancer Registry (n = 2,204). Systemic treatment strategies were divided into monotherapy, doublet and triplet chemotherapy, and trastuzumab-containing regimens. Data on OS were available for all patients, on TTF for patients diagnosed from 2010 to 2015 (n = 1,700), and on toxicity for patients diagnosed from 2010 to 2014 (n = 1,221). OS and TTF were analyzed using multivariable Cox regression, with adjustment for relevant tumor and patient characteristics. Up to 45 different systemic treatment regimens were found to be administered, with a median TTF of 4.6 and OS of 7.5 months. Most patients (45%) were treated with doublet chemotherapy; 34% received triplets, 10% monotherapy and 10% a trastuzumab-containing regimen. The highest median OS was found in patients receiving a trastuzumab-containing regimen (11.9 months). Triplet chemotherapy showed equal survival rates compared to doublets (OS: HR 0.92, 95%CI 0.83-1.02; TTF: HR 0.92, 95%CI 0.82-1.04) but significantly more grade 3-5 toxicity than doublets (33% vs. 21%, respectively). In conclusion, heterogeneity of first-line palliative systemic treatment in metastatic esophagogastric cancer patients is striking. Based on our data, doublet chemotherapy is the preferred treatment strategy because of similar survival and less toxicity compared to triplets.

Original languageEnglish
Pages (from-to)1889-1901
Number of pages13
JournalInternational Journal of Cancer
Volume146
Issue number7
Early online date24 Aug 2019
DOIs
Publication statusPublished - 1 Apr 2020

Keywords

  • esophageal neoplasms
  • gastric neoplasms
  • drug therapy
  • palliative treatment
  • CLINICAL-PRACTICE GUIDELINES
  • ADVANCED GASTRIC-CANCER
  • ESOPHAGEAL CANCER
  • CHEMOTHERAPY
  • SURVIVAL
  • DIAGNOSIS
  • SURGERY

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