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• W4366349109 abstract "Abstract Background Small-cell lung cancer (SCLC) is a malignant tumor known for its poor prognosis. In addition to chemotherapy and immunotherapy irradiation plays a big role especially in inoperability. This study evaluated prognostic factors in patients with SCLC, receiving chemotherapy and thoracic irradiation, that may affect overall survival (OS), progression-free survival (PFS) and toxicity. Methods Patients with limited disease (LD) SCLC (n = 57) and extensive disease (ED) SCLC (n = 69) who received thoracic radiotherapy were analyzed retrospectively. The prognostic factors sex, age, Karnofsky performance status (KPS), tumor-, nodal-stage and timepoint of start of irradiation in relation to the first cycle of chemotherapy were evaluated. Start of irradiation was stratified as early ( $$le$$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:mo>≤</mml:mo> </mml:math> 2 cycles of chemotherapy), late (3 or 4 cycles) and very late ( $$ge$$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:mo>≥</mml:mo> </mml:math> 5 cycles). Results were analyzed by Cox univariate and multivariate as well as logistic regression analysis. Results The median OS of LD-SCLC patients was 23.7 months in early, and 22.0 months in late start of irradiation. In very late start, median OS was not reached. PFS was 11.8, 15.2 and 47.9 months, respectively. In patients with ED-SCLC OS was 4.3 months in early, 13.0 months in late and 12.2 months in very late start of irradiation. PFS was 6.7, 13.0 and 12.2 months, respectively. Prognosis of patients with LD- or ED-SCLC receiving late or very late start of irradiation was significantly prolonged in OS and PFS compared to an early start ( p < 0.05). KPS $$ge$$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:mo>≥</mml:mo> </mml:math> 80 shows a significant increase of OS and PFS in ED-SCLC. Female sex and smaller mean lung dose were associated with lower risk of toxicity. Conclusion Late or very late start of irradiation is a prognosis-enhancing factor in LD-SCLC and ED-SCLC for OS and PFS. KPS $$ge$$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:mo>≥</mml:mo> </mml:math> 80 increases prognosis of OS and PFS in ED-SCLC as well. Toxicity is less common in female sex and patients with low mean lung dose in LD-SCLC." @default.
• W4366349109 created "2023-04-21" @default.
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• W4366349109 date "2023-04-18" @default.
• W4366349109 modified "2023-09-25" @default.
• W4366349109 title "Factors associated with overall survival, progression-free survival and toxicity in patients with small cell lung cancer and thoracic irradiation in a clinical real-world setting" @default.
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• W4366349109 doi "https://doi.org/10.1186/s13014-023-02252-1" @default.
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