{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,5,14]],"date-time":"2025-05-14T00:36:08Z","timestamp":1747182968537,"version":"3.40.5"},"reference-count":33,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2019,10,28]],"date-time":"2019-10-28T00:00:00Z","timestamp":1572220800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Asia-Pac J Clncl Oncology"],"published-print":{"date-parts":[[2020,4]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Aim<\/jats:title><jats:p>This study was conducted to evaluate the efficacy of palliative chemotherapy by the lines of chemotherapy in recurrent\/metastatic esophageal squamous cell carcinoma (ESCC) and to compare the efficacy between the patients with initially metastatic ESCC and those with recurrent\/progressed ESCC after curative treatment.<\/jats:p><\/jats:sec><jats:sec><jats:title>Materials and Methods<\/jats:title><jats:p>All 107 patients who began palliative chemotherapy for recurrent\/metastatic ESCC from March 2015 to October 2017 were included, and grouped according to previous treatment: Groups A (previous chemoradiation alone, n\u00a0=\u00a030), B (previous surgery alone, n\u00a0=\u00a011), C (previous chemoradiation and surgery, n\u00a0=\u00a030), and D (initially metastatic or de novo stage IV, n\u00a0=\u00a036). Groups A, B, and C (pretreated group) and Group D (treatment\u2010na\u00efve group) were reorganized according to treatment history. Overall response rate (ORR) and survival data were retrospectively evaluated for each group, lines of chemotherapy, and chemotherapeutic regimen.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>ORR was 25.2%, 7.3%, and 3.4% in first\u2010, second\u2010, and third\u2010line chemotherapy, respectively. The median progression\u2010free survival (PFS) was 4.7, 2.0, and 2.2 months in first\u2010, second\u2010, third\u2010line chemotherapy, respectively. The median overall survival (OS) after first\u2010line palliative chemotherapy was 10.1 months, and it was not significantly different between pretreated and treatment\u2010naive groups. Previous surgery, good performance, \u22653 lines of chemotherapy, and low C\u2010reactive protein level were linked to a significantly longer OS in multivariate analysis.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Because PFS rapidly declines with advancement of line of chemotherapy, incorporation of effective treatment modalities in early line treatments is crucial in the management of recurrent\/metastatic ESCC. If tolerable, continuing advanced lines of chemotherapy may prolong survival.<\/jats:p><\/jats:sec>","DOI":"10.1111\/ajco.13283","type":"journal-article","created":{"date-parts":[[2019,10,28]],"date-time":"2019-10-28T13:39:51Z","timestamp":1572269991000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Impact of sequential lines of palliative chemotherapy in patients with recurrent\/metastatic esophageal squamous cell carcinoma: A retrospective analysis of 107 patients at a single center"],"prefix":"10.1111","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9475-6930","authenticated-orcid":false,"given":"Eo Jin","family":"Kim","sequence":"first","affiliation":[{"name":"Department of Oncology, Asan Medical Center University of Ulsan College of Medicine  Seoul Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jong 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