PURPOSE: Myelosuppression induced by concurrent chemotherapy and radiotherapy can be a significant problem in patients with non-small cell lung cancer (NSCLC), but its risk factors remain largely unknown. The objective of this study was to retrospectively evaluate clinical data obtained before chemoradiotherapy (CRT) to identify the risk factors for myelosuppression in patients with advanced NSCLC. METHODS: Between January 2007 and January 2012, 141 patients with advanced NSCLC were treated with curative intent according to the CRT protocol (50-70 Gy at 2 Gy/day with paclitaxel 135-175 mg/m(2) and carboplatin 100 mg/m(2) on days 1, 22, and 43). The endpoint of this survey was the occurrence of grade 3 or higher myelosuppression (neutropenia, leukopenia, thrombocytopenia, or anemia). Risk factors significantly related to myelosuppression were extracted using logistic regression analysis. RESULTS: Grade 3 or higher neutropenia, leukopenia, thrombocytopenia, or anemia occurred in 19.9, 16.3, 14.9, and 0% of the patients, respectively. According to the multivariate analysis, the risk factors included age, albumin, and body surface area (BSA) for neutropenia; performance status and bone metastases for leukopenia; and age, gender, and serum creatinine concentration for thrombocytopenia (p < 0.05). CONCLUSIONS: It was found that age, BSA, creatinine level, and female gender were the most important factors for CRT-induced myelosuppression in advanced NSCLC. By identifying these risk factors, medical staff can improve application of appropriate medical care to reduce the myelosuppression in advanced NSCLC patients treated by CRT.
PURPOSE:Myelosuppression induced by concurrent chemotherapy and radiotherapy can be a significant problem in patients with non-small cell lung cancer (NSCLC), but its risk factors remain largely unknown. The objective of this study was to retrospectively evaluate clinical data obtained before chemoradiotherapy (CRT) to identify the risk factors for myelosuppression in patients with advanced NSCLC. METHODS: Between January 2007 and January 2012, 141 patients with advanced NSCLC were treated with curative intent according to the CRT protocol (50-70 Gy at 2 Gy/day with paclitaxel 135-175 mg/m(2) and carboplatin 100 mg/m(2) on days 1, 22, and 43). The endpoint of this survey was the occurrence of grade 3 or higher myelosuppression (neutropenia, leukopenia, thrombocytopenia, or anemia). Risk factors significantly related to myelosuppression were extracted using logistic regression analysis. RESULTS: Grade 3 or higher neutropenia, leukopenia, thrombocytopenia, or anemia occurred in 19.9, 16.3, 14.9, and 0% of the patients, respectively. According to the multivariate analysis, the risk factors included age, albumin, and body surface area (BSA) for neutropenia; performance status and bone metastases for leukopenia; and age, gender, and serum creatinine concentration for thrombocytopenia (p < 0.05). CONCLUSIONS: It was found that age, BSA, creatinine level, and female gender were the most important factors for CRT-induced myelosuppression in advanced NSCLC. By identifying these risk factors, medical staff can improve application of appropriate medical care to reduce the myelosuppression in advanced NSCLCpatients treated by CRT.
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