目的探讨贝伐珠单抗联合TP(紫杉醇+顺铂)化疗方案治疗晚期非小细胞肺癌(NSCLC)的疗效及对预后的影响。方法选取晚期NSCLC患者78例,随机分为A组(39例,予以TP化疗方案)和B组(39例,予以TP化疗方案+贝伐珠单抗)。比较2组的客观缓解率(ORR)...目的探讨贝伐珠单抗联合TP(紫杉醇+顺铂)化疗方案治疗晚期非小细胞肺癌(NSCLC)的疗效及对预后的影响。方法选取晚期NSCLC患者78例,随机分为A组(39例,予以TP化疗方案)和B组(39例,予以TP化疗方案+贝伐珠单抗)。比较2组的客观缓解率(ORR)、疾病控制率(DCR)和血清肿瘤标志物[血管内皮生长因子(VEGF)、细胞角蛋白19片段(CYFRA21-1)、癌胚抗原(CEA)]水平。记录治疗期间肝肾功能损害、白细胞减少、中性粒细胞减少、血小板减少、胃肠道反应等不良反应发生情况。自实施治疗日始对患者进行随访,统计2组患者的5年生存率、无进展生存期(PFS)和总生存期(OS)。结果B组ORR、DCR分别为58.97%、89.74%,分别高于A组的35.90%、71.79%(P<0.05)。治疗后2组血清VEGF、CYFRA21-1、CEA水平均降低,且B组低于A组(P<0.05)。2组肝、肾功能损害,白细胞减少,中性粒细胞减少,血小板减少,胃肠道反应发生率均无明显差异(P>0.05)。B组5年生存率为20.51%,与A组(12.82%)相比无明显差异(P>0.05)。Kaplan-Meier生存曲线显示,B组的中位PFS长于A组(8.9 vs 7.2个月)(P<0.05);B组的中位OS长于A组(25.6 vs 17.9个月)(P<0.05)。结论相比于TP化疗方案治疗晚期NSCLC,联合贝伐珠单抗可提高ORR和DCR,延长PFS和OS,且可降低VEGF、CYFRA21-1、CEA肿瘤标志物水平。展开更多
Purpose: To investigate the toxicity, survival and patterns of failure in patients with advanced lung cancer treated with intensity modulated radiation therapy (IMRT) and chemotherapy. Methods and Materials: Retrospec...Purpose: To investigate the toxicity, survival and patterns of failure in patients with advanced lung cancer treated with intensity modulated radiation therapy (IMRT) and chemotherapy. Methods and Materials: Retrospective chart review of 68 total patients: 46 academic and 22 community center. Endpoints: Grade ≥ 3 pneumonitis, Grade ≥ 2 esophagitis, local, regional and distant failure, progression-free survival (PFS) and overall survival (OS). Results: For the academic center patients, median follow-up was 19.2 months. Esophagitis: 0% Grade 3, 35% Grade 2, no significant difference between dose bins: <70 Gy vs. 70 Gy, 25% vs. 45% (p = 0.22), <66 Gy vs. 66 - 70 Gy, 28% vs. 39% (p = 0.53). Lung dose metrics and PTV size were not associated with Grade ≥ 3 pneumonitis. Esophageal V35, V50, and mean dose but not PTV size was associated with Grade 2 esophagitis. 1 year local, regional and distant failure = 6.5%, 6.5%, and 30.4%. No endpoint differences were seen between dose bins, though patients with smaller PTVs treated with 70 Gy did demonstrate improved OS (ns) when compared to those treated with <70 Gy. Community Center: Median follow-up 6.2 months with 15% Grade 2 esophagitis, no Grade 3 esophagitis. Two patients (9%) experienced Grade ≥ 3 pneumonitis. Conclusions: IMRT chemoradiation was well tolerated in a population with advanced NSCLC both in the academic and community settings. Severe pneumonitis rates were low and comparable to other series using IMRT and chemotherapy. Esophagitis was mild and associated with V35, V50 and mean dose. No significant benefit was seen for higher doses regarding survival, local, regional or distant control despite that higher dose bins had smaller tumors. Though not statistically significant, we did find a trend toward worse OS for <70 Gy when the PTV was less than the median PTV.展开更多
The Rat sarcoma virus (RAS) family of proteins, which includes the Kristen Rat sarcoma virus (KRAS), is linked to nearly one-fourth of all human cancers. KRAS mutations, in particular, are associated with Non-Small Ce...The Rat sarcoma virus (RAS) family of proteins, which includes the Kristen Rat sarcoma virus (KRAS), is linked to nearly one-fourth of all human cancers. KRAS mutations, in particular, are associated with Non-Small Cell Lung Carcinoma (NSCLC), colorectal cancer, adenocarcinomas, ovarian carcinoma, and endometrial tumors. KRAS activates 80 different signaling pathways, including Mitogen-activated protein kinases (MAPK) and Phosphoinositide 3-kinase (PI3K), and up-regulates transcription factors such as ETS like Protein (ELK), Jun Proto-Oncogene (JUN), and Myelocytomatosis (MYC), which are involved in cell differentiation, proliferation, transformation, and survival. KRAS mutations are also known to cause autocrine function, which further exacerbates the situation. In NSCLC, KRAS mutations have a strong positive correlation with the disease, particularly in patients with a smoking history. In pancreatic cancer, KRAS mutations are a dominant pathological basis, with most mutations being G12D, G12V, G13D, G13C, G13S, and G13R. These mutations serve as initial markers in tumorigenesis and are associated with poor prognosis and high mortality rates. In colorectal cancer, KRAS mutations contribute to 4/5 of cases, with cellular mechanisms involving the MAPK pathway, which resists anti-epidermal growth factor antibodies. In Low-grade Serous Ovarian Cancer (LGSOC), KRAS mutations are associated with altered signaling in the MAPK pathway and drug resistance. However, treatments such as Selumetinib, a down regulator of RAS/Rapidly Accelerated Fibrosarcoma (RAF)/Mitogen-activated protein kinase (MEK) pathways, and a combination of trametinib and buparlisib have shown promise in managing LGSOC when diagnosed early through KRAS mutation markers. Although KRAS mutations are commonly associated with many types of cancer, their use in clinical practice is limited due to the lack of accurate methods to identify them. It is needed to further isolate the KRAS mutation products and correlate the cancer-causing genes to make it a promising approach for cancer chemotherapy.展开更多
This prospective multicenter phase II study evaluated the clinical efficacy of neoadjuvant nivolumab-exclusive(N)and nivolumab–chemotherapy(N/C)combinations based on PD-L1 expression.Eligible patients exhibited resec...This prospective multicenter phase II study evaluated the clinical efficacy of neoadjuvant nivolumab-exclusive(N)and nivolumab–chemotherapy(N/C)combinations based on PD-L1 expression.Eligible patients exhibited resectable clinical stage IIA–IIIB(AJCC 8th edition)NSCLC without EGFR/ALK alterations.Patients received either mono-nivolumab(N)or nivolumab+nabpaclitaxel+carboplatin(N/C)for three cycles based on PD-L1 expression.The primary endpoint was the major pathological response(MPR).Key secondary endpoints included the pathologic complete response(pCR),objective response rate(ORR),and event-free survival(EFS).Baseline PD-L1 expression and perioperative circulating tumor DNA(ctDNA)status were correlated with pCR and EFS.Fifty-two patients were enrolled,with 46 undergoing surgeries.The MPR was 50.0%(26/52),with 25.0%(13/52)achieving pCR,and 16.7%and 66.7%for patients with PD-L1≥50%in N and N/C groups,respectively.Thirteen(25.0%)patients experienced grade 3 or higher immune-related adverse events during neoadjuvant treatment.Patients with post-neoadjuvant ctDNA negativity was more likely to have pCR(39.1%)compared with those remained positive(6.7%,odds ratio=6.14,95%CI 0.84-Inf,p=0.077).With a median follow-up of 25.1 months,the 18-month EFS rate was 64.8%(95%CI 51.9–81.0%).For patients with ctDNA–vs.ctDNA+,the 18m-EFS rate was 93.8%vs 47.3%(HR,0.15;95%CI 0.04,0.94;p=0.005).Immunochemotherapy may serve as an optimal neoadjuvant treatment even for patients with PD-L1 expression≥50%.ctDNA negativity following neoadjuvant treatment and surgery could help identify superior pathological and survival benefits,which requires further confirmation in a prospective clinical trial(NCT04015778).展开更多
文摘目的探讨贝伐珠单抗联合TP(紫杉醇+顺铂)化疗方案治疗晚期非小细胞肺癌(NSCLC)的疗效及对预后的影响。方法选取晚期NSCLC患者78例,随机分为A组(39例,予以TP化疗方案)和B组(39例,予以TP化疗方案+贝伐珠单抗)。比较2组的客观缓解率(ORR)、疾病控制率(DCR)和血清肿瘤标志物[血管内皮生长因子(VEGF)、细胞角蛋白19片段(CYFRA21-1)、癌胚抗原(CEA)]水平。记录治疗期间肝肾功能损害、白细胞减少、中性粒细胞减少、血小板减少、胃肠道反应等不良反应发生情况。自实施治疗日始对患者进行随访,统计2组患者的5年生存率、无进展生存期(PFS)和总生存期(OS)。结果B组ORR、DCR分别为58.97%、89.74%,分别高于A组的35.90%、71.79%(P<0.05)。治疗后2组血清VEGF、CYFRA21-1、CEA水平均降低,且B组低于A组(P<0.05)。2组肝、肾功能损害,白细胞减少,中性粒细胞减少,血小板减少,胃肠道反应发生率均无明显差异(P>0.05)。B组5年生存率为20.51%,与A组(12.82%)相比无明显差异(P>0.05)。Kaplan-Meier生存曲线显示,B组的中位PFS长于A组(8.9 vs 7.2个月)(P<0.05);B组的中位OS长于A组(25.6 vs 17.9个月)(P<0.05)。结论相比于TP化疗方案治疗晚期NSCLC,联合贝伐珠单抗可提高ORR和DCR,延长PFS和OS,且可降低VEGF、CYFRA21-1、CEA肿瘤标志物水平。
文摘Purpose: To investigate the toxicity, survival and patterns of failure in patients with advanced lung cancer treated with intensity modulated radiation therapy (IMRT) and chemotherapy. Methods and Materials: Retrospective chart review of 68 total patients: 46 academic and 22 community center. Endpoints: Grade ≥ 3 pneumonitis, Grade ≥ 2 esophagitis, local, regional and distant failure, progression-free survival (PFS) and overall survival (OS). Results: For the academic center patients, median follow-up was 19.2 months. Esophagitis: 0% Grade 3, 35% Grade 2, no significant difference between dose bins: <70 Gy vs. 70 Gy, 25% vs. 45% (p = 0.22), <66 Gy vs. 66 - 70 Gy, 28% vs. 39% (p = 0.53). Lung dose metrics and PTV size were not associated with Grade ≥ 3 pneumonitis. Esophageal V35, V50, and mean dose but not PTV size was associated with Grade 2 esophagitis. 1 year local, regional and distant failure = 6.5%, 6.5%, and 30.4%. No endpoint differences were seen between dose bins, though patients with smaller PTVs treated with 70 Gy did demonstrate improved OS (ns) when compared to those treated with <70 Gy. Community Center: Median follow-up 6.2 months with 15% Grade 2 esophagitis, no Grade 3 esophagitis. Two patients (9%) experienced Grade ≥ 3 pneumonitis. Conclusions: IMRT chemoradiation was well tolerated in a population with advanced NSCLC both in the academic and community settings. Severe pneumonitis rates were low and comparable to other series using IMRT and chemotherapy. Esophagitis was mild and associated with V35, V50 and mean dose. No significant benefit was seen for higher doses regarding survival, local, regional or distant control despite that higher dose bins had smaller tumors. Though not statistically significant, we did find a trend toward worse OS for <70 Gy when the PTV was less than the median PTV.
文摘The Rat sarcoma virus (RAS) family of proteins, which includes the Kristen Rat sarcoma virus (KRAS), is linked to nearly one-fourth of all human cancers. KRAS mutations, in particular, are associated with Non-Small Cell Lung Carcinoma (NSCLC), colorectal cancer, adenocarcinomas, ovarian carcinoma, and endometrial tumors. KRAS activates 80 different signaling pathways, including Mitogen-activated protein kinases (MAPK) and Phosphoinositide 3-kinase (PI3K), and up-regulates transcription factors such as ETS like Protein (ELK), Jun Proto-Oncogene (JUN), and Myelocytomatosis (MYC), which are involved in cell differentiation, proliferation, transformation, and survival. KRAS mutations are also known to cause autocrine function, which further exacerbates the situation. In NSCLC, KRAS mutations have a strong positive correlation with the disease, particularly in patients with a smoking history. In pancreatic cancer, KRAS mutations are a dominant pathological basis, with most mutations being G12D, G12V, G13D, G13C, G13S, and G13R. These mutations serve as initial markers in tumorigenesis and are associated with poor prognosis and high mortality rates. In colorectal cancer, KRAS mutations contribute to 4/5 of cases, with cellular mechanisms involving the MAPK pathway, which resists anti-epidermal growth factor antibodies. In Low-grade Serous Ovarian Cancer (LGSOC), KRAS mutations are associated with altered signaling in the MAPK pathway and drug resistance. However, treatments such as Selumetinib, a down regulator of RAS/Rapidly Accelerated Fibrosarcoma (RAF)/Mitogen-activated protein kinase (MEK) pathways, and a combination of trametinib and buparlisib have shown promise in managing LGSOC when diagnosed early through KRAS mutation markers. Although KRAS mutations are commonly associated with many types of cancer, their use in clinical practice is limited due to the lack of accurate methods to identify them. It is needed to further isolate the KRAS mutation products and correlate the cancer-causing genes to make it a promising approach for cancer chemotherapy.
基金supported by the Bristol Myers Squibb(grant number BMSCA209-8D8)the Chinese Thoracic Oncology Group(CTONG1804)ctDNA analysis was performed by Fujian Key Laboratory of Advanced Technology for Cancer Screening and Early Diagnosis and the Berry Oncology Corporation without compensation.
文摘This prospective multicenter phase II study evaluated the clinical efficacy of neoadjuvant nivolumab-exclusive(N)and nivolumab–chemotherapy(N/C)combinations based on PD-L1 expression.Eligible patients exhibited resectable clinical stage IIA–IIIB(AJCC 8th edition)NSCLC without EGFR/ALK alterations.Patients received either mono-nivolumab(N)or nivolumab+nabpaclitaxel+carboplatin(N/C)for three cycles based on PD-L1 expression.The primary endpoint was the major pathological response(MPR).Key secondary endpoints included the pathologic complete response(pCR),objective response rate(ORR),and event-free survival(EFS).Baseline PD-L1 expression and perioperative circulating tumor DNA(ctDNA)status were correlated with pCR and EFS.Fifty-two patients were enrolled,with 46 undergoing surgeries.The MPR was 50.0%(26/52),with 25.0%(13/52)achieving pCR,and 16.7%and 66.7%for patients with PD-L1≥50%in N and N/C groups,respectively.Thirteen(25.0%)patients experienced grade 3 or higher immune-related adverse events during neoadjuvant treatment.Patients with post-neoadjuvant ctDNA negativity was more likely to have pCR(39.1%)compared with those remained positive(6.7%,odds ratio=6.14,95%CI 0.84-Inf,p=0.077).With a median follow-up of 25.1 months,the 18-month EFS rate was 64.8%(95%CI 51.9–81.0%).For patients with ctDNA–vs.ctDNA+,the 18m-EFS rate was 93.8%vs 47.3%(HR,0.15;95%CI 0.04,0.94;p=0.005).Immunochemotherapy may serve as an optimal neoadjuvant treatment even for patients with PD-L1 expression≥50%.ctDNA negativity following neoadjuvant treatment and surgery could help identify superior pathological and survival benefits,which requires further confirmation in a prospective clinical trial(NCT04015778).
