{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,13]],"date-time":"2026-10-13T21:09:29Z","timestamp":1791925769717,"version":"4.3.4"},"reference-count":34,"publisher":"American Medical Association (AMA)","issue":"9","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JAMA Netw Open"],"abstract":"<jats:sec id=\"ab-zoi231029-4\"><jats:title>Importance<\/jats:title><jats:p>Despite recent breakthroughs in therapy, advanced lung cancer still poses a therapeutic challenge. The survival profile of patients with metastatic lung cancer remains poorly understood by metastatic disease type (ie, de novo stage IV vs distant recurrence).<\/jats:p><\/jats:sec><jats:sec id=\"ab-zoi231029-5\"><jats:title>Objective<\/jats:title><jats:p>To evaluate the association of metastatic disease type on overall survival (OS) among patients with non\u2013small cell lung cancer (NSCLC) and to identify potential mechanisms underlying any survival difference.<\/jats:p><\/jats:sec><jats:sec id=\"ab-zoi231029-6\"><jats:title>Design, Setting, and Participants<\/jats:title><jats:p>Cohort study of a national US population based at a tertiary referral center in the San Francisco Bay Area using participant data from the National Lung Screening Trial (NLST) who were enrolled between 2002 and 2004 and followed up for up to 7 years as the primary cohort and patient data from Stanford Healthcare (SHC) for diagnoses between 2009 and 2019 and followed up for up to 13 years as the validation cohort. Participants from NLST with de novo metastatic or distant recurrent NSCLC diagnoses were included. Data were analyzed from January 2021 to March 2023.<\/jats:p><\/jats:sec><jats:sec id=\"ab-zoi231029-7\"><jats:title>Exposures<\/jats:title><jats:p>De novo stage IV vs distant recurrent metastatic disease.<\/jats:p><\/jats:sec><jats:sec id=\"ab-zoi231029-8\"><jats:title>Main Outcomes and Measures<\/jats:title><jats:p>OS after diagnosis of metastatic disease.<\/jats:p><\/jats:sec><jats:sec id=\"ab-zoi231029-9\"><jats:title>Results<\/jats:title><jats:p>The NLST and SHC cohort consisted of 660 and 180 participants, respectively (411 men [62.3%] vs 109 men [60.6%], 602 White participants [91.2%] vs 111 White participants [61.7%], and mean [SD] age of 66.8 [5.5] vs 71.4 [7.9] years at metastasis, respectively). Patients with distant recurrence showed significantly better OS than patients with de novo metastasis (adjusted hazard ratio [aHR], 0.72; 95% CI, 0.60-0.87; <jats:italic>P<\/jats:italic>\u2009&amp;amp;lt;\u2009.001) in NLST, which was replicated in SHC (aHR, 0.64; 95% CI, 0.43-0.96; <jats:italic>P<\/jats:italic>\u2009=\u2009.03). In SHC, patients with de novo metastasis more frequently progressed to the bone (63 patients with de novo metastasis [52.5%] vs 19 patients with distant recurrence [31.7%]) or pleura (40 patients with de novo metastasis [33.3%] vs 8 patients with distant recurrence [13.3%]) than patients with distant recurrence and were primarily detected through symptoms (102 patients [85.0%]) as compared with posttreatment surveillance (47 patients [78.3%]) in the latter. The main finding remained consistent after further adjusting for metastasis sites and detection methods.<\/jats:p><\/jats:sec><jats:sec id=\"ab-zoi231029-10\"><jats:title>Conclusions and Relevance<\/jats:title><jats:p>In this cohort study, patients with distant recurrent NSCLC had significantly better OS than those with de novo disease, and the latter group was associated with characteristics that may affect overall survival. This finding can help inform future clinical trial designs to ensure a balance for baseline patient characteristics.<\/jats:p><\/jats:sec>","DOI":"10.1001\/jamanetworkopen.2023.35813","type":"journal-article","created":{"date-parts":[[2023,9,26]],"date-time":"2023-09-26T15:01:05Z","timestamp":1695740465000},"page":"e2335813","source":"Crossref","is-referenced-by-count":17,"title":["Overall Survival Among Patients With De Novo Stage IV Metastatic and Distant Metastatic Recurrent Non\u2013Small Cell Lung Cancer"],"prefix":"10.1001","volume":"6","author":[{"given":"Chloe C.","family":"Su","sequence":"first","affiliation":[{"name":"Department of Epidemiology and Population Health, Stanford University School of Medicine, Stanford, California"},{"name":"Quantitative Sciences Unit, Department of Medicine, Stanford University School of Medicine, Stanford, California"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Julie 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