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Oncol."],"abstract":"<jats:sec><jats:title>Background<\/jats:title><jats:p>Multidisciplinary team (MDT) meetings are generally accepted forums for the quality of cancer care, however, there is an ongoing discussion about the substantial role of MDTs in reaching optimal treatment decisions. In our tertiary oncology center, a second-step intradisciplinary seu oncotherapy tumor board (OTT) discussion system was introduced to increase the adherence of MDT\u2019s decision making with the knowledge of patients\u2019 preference and tolerance, and to partially relieve MDT\u2019s overwork in the purely adjuvant and the palliative treatment settings. Over the real-world tumor board data elaboration, the primary aim of this observational study was to present the impact of OTT meetings on treatment decisions.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>The data of 33,056 cases of 27,227 patients were retrospectively analyzed with using a regular expression-based word search algorithm. Subsequent modifications of OTT decisions were defined as \u201cminor\u201d, when only some additional suggestions were introduced, \u201cmoderate\u201d when the treatment items were significantly modified, and \u201cmajor\u201d when the direction of the treatment was fully transformed.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>During the 12-year observation period (2007-2019) the number of patients and case discussions, average age of the patients, percentage of sophisticated treatment methods, and the number of treatment lines\/decisions made for the same patient had been continuously increased. The average percentage of minor, moderate and major modifications were 2.28, 6.4 and 8.92%, respectively, implying a remarkably high modification rate of the primary recommendations.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Considering the growing complexity and multiplicity of oncology care, regular OTT board meetings can increase the accuracy of MDT\u2019s work and treatment decisions without any overwork of the related disciplines and can also serve as an additive\/alternative teamwork forum in the adjuvant, multiple line, and palliative care settings.<\/jats:p><\/jats:sec>","DOI":"10.3389\/fonc.2025.1553874","type":"journal-article","created":{"date-parts":[[2025,8,12]],"date-time":"2025-08-12T04:10:52Z","timestamp":1754971852000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":1,"title":["The initiation of the second-step intradisciplinary tumor board discussion and its impact on treatment decision. 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