The landscape of systemic treatment in metastatic pancreatic cancer has changed significantly since 2011. Conroy et al[29] have shown FOLFIRINOX (5-fluorouracil plus leucovorin, irinotecan and oxaliplatin) delivered significant improvement of median overall survival when compared to gemcitabine alone in a randomized phase Ⅲ study enrolling 342 patients [11.1 mo vs 6.8 mo (P < 0.001)]. Of note, this study excluded patients
3WJCO |www.wjgnet.com February 0, 206|Volume 7|Issue |
Trial/reference published year
Trial phase/patient number
Treatment regimen Primary endpoint Result
NCT00335543/205[63] Ⅱ, randomized/66 (254 planned)
Upfront surgery vs chemoradiation with gemcitabine/cisplatin and radiotherapy of 55.8 Gy
Median survival Median survival: 4.4 mo vs 7.4 mo (P = 0.96). Overall R0: 48% vs 52% (P = 0.8)
NCT00536874/204[64] Ⅱ/38 Gemcitabine and oxaliplatin 8-mo overall survival
8-mo overall survival: 63%. Median overall survival: 27.2 mo. Resection rate was 7%, and 74% of resection was R0
NCT00490360/2008[20,65] Ⅱ/28 Gemcitabine and cisplatin Resectability rate ≥ 70%
Resection rate was 89%, and 80% of resection was R0. Overall survival was 26.5 mo
Evans et al[2] Ⅱ/86 Chemoradiation with gemcitabine and radiotherapy of 30 Gy (in 0 fractions) for pancreatic head cancer
Clinical outcome Overall R0: 74%. Median overall survival was 22.7 mo with a 5-yr survival of 27% (36% in R0)
Varadhachary[22] Ⅱ/90 Gemcitabine and cisplatin followed by chemoradiation with gemcitabine and radiotherapy of 30 Gy for pancreatic head cancer
Clinical outcome Overall R0 was 58%. Additional chemotherapy did not improve clinical outcome
Palmer et al[66] Ⅱ, randomized/50 Gemcitabine vs gemcitabine and cisplatin Resection rate Resection rate was 54%: 9 (38%) in the gemcitabine arm and 8 (70%) in the combination arm
Table 1 Selected published neoadjuvant phase Ⅱ trials in resectable pancreatic adenocarcinoma between 2006-2015
Wong J et al . Neoadjuvant treatment for resectable pancreatic adenocarcinoma
ized phase Ⅱ/Ⅲ trial conducted in Japan since January 2013 (clinical trial information: UMIN000009634)[35]. This study plans to enroll 360 patients with resectable pancreatic cancer, and randomizes them to either surgery followed by adjuvant chemotherapy with S1 for 6 mo or 2 mo of neoadjuvant chemotherapy with gemcitabine and S1 followed by surgery then 6 mo of adjuvant chemotherapy with S1. The primary study endpoint is resection rate for phase Ⅱ and overall survival for phase Ⅲ. This study plans to have 40 patients in each arm of the phase Ⅱ part, and moves on to phase Ⅲ if there are no more than 14 cases of nonresection in each arm of phase Ⅱ study. S-1 is an oral fluorinated pyrimidine, containing tegafur, 5-chloro-2,4dihydroxypyridine and potassium oxonate at a molar ratio of 1:0.4:1[36]. Tegafur is a pro-drug of 5-fluorouracil, and S1 has been shown to deliver higher 5-fluorouracil levels in the plasma and the tumor tissue. The safety and efficacy of combination chemotherapy with gemcitabine and S1 for resectable pancreatic cancer have been reported in pilot study[37]. The UVA-PC-PD101 study (NCT02305186; Safety and Immunological Effect of Pembrolizumab in Resectable or Borderline Resectable Pancreatic Cancer) is a phase Ⅰb/Ⅱ multicenter study in patients with resectable or borderline resectable pancreatic cancer. This study will randomize 56 subjects in 2:1 to the experimental arm with pembrolizumab given concurrently with chemoradiation or control arm receiving chemoradiation only. Patients in both arms will receive surgery and adjuvant chemotherapy with gemcitabine. The primary outcome measures are to determine the safety of neoadjuvant chemoradiation with capecitabine in combination with pembrolizumab, and to examine and compare the difference in the number of tumor infiltrating lymphocytes (TILs) in resected pancreatic tissue between experimental and control arms[38]. The investigators hypothesize chemoradiation recruits TILs to the microenvironment of pancreatic cancer causing overexpression of programmed death-ligand 1 (PD-L1). PD-L1 binds to PD-1 on T-cells, and suppress cytotoxic T-cells. Pembrolizumab is a monoclonal antibody that targets the PD-1, and release the inhibition on cytotoxic T-cells. Therefore, it is expected that there are more immune effects at tumor tissues in the experimental arm than control arm. It will be interesting to see if this will
with suboptimal performance status (ECOG 2 and beyond) or ages older than 76 years old. Von Hoff and colleagues[30] reported increased median overall survival with nab-paclitaxel plus gemcitabine compared to gemcitabine alone in a randomized phase Ⅲ study with 861 patients [8.5 mo vs 6.7 mo (P < 0.001)]. Therefore both FOLFIRINOX and nab-paclitaxel/gemcitabine have become preferred regimens in advanced pancreatic cancer, and are currently explored in the neoadjuvant setting (Table 2).
自 2011 年以来,全身治疗转移性胰腺癌组织中的景观有显著的改变。康罗伊 et al [29] 有显示 FOLFIRINOX (5-氟尿嘧啶加亚叶酸钙、 伊立替康和奥沙利铂) 交付的中位总生存期时相比,吉西他滨单独招收 342 病人随机的相位 ⅲ 研究重大改进 [11.1 vs 6.8 钼 (P < 0.001)]。值得注意的是,这项研究排除患者3WJCO | www.wjgnet.com 2 月 0、 20 6 |第 7 卷 |问题 |审判/参考出版的年审判阶段/病人数治疗方案主要终点结果NCT00335543/20 5 [63] 第二,随机/66 (254 计划)与吉西他滨/顺铂和放疗 55.8 Gy vs 接受同步放化疗前期手术中位生存期中位数生存︰ 4.4 墨玉 vs 7.4 (P = 0.96)。整体 R0: 48%和 52%(P = 0.8)NCT00536874/20 4 [64] ⅱ/38 吉西他滨和奥沙利铂 8-钼总生存率8 莫总体生存率︰ 63%。中位总生存期︰ 27.2 密苏里手术切除率为 7%和 74%的切除是 R0NCT00490360/2008 [20,65] ⅱ/28 吉西他滨与顺铂可切除率 ≥ 70%手术切除率为 89%和 80%的切除是 R0。总体生存率 26.5 莫埃文斯 et al [2] ⅱ/86 同步放化疗与吉西他滨和 30 Gy (在 0 的分数) 为胰头癌的放射治疗临床结果总体 R0: 74%。中位总生存期是 22.7 莫与 5 年生存的 27%(R0 36%)Varadhachary [22] ⅱ/90 吉西他滨联合顺铂跟着同步放化疗与吉西他滨和 30 Gy 为胰头癌的放射治疗临床结果总体 R0 为 58%。加辅助化疗并不能改善临床结果帕默 et al [66] 二、 随机/50 vs 吉西他滨吉西他滨和顺铂切除术切除率为 54%︰ 吉西他滨手臂及 8 (70%) 在组合臂 9 (38%)表 1 选定在切除胰腺癌 2006年-2015年年间发表新辅助期 ⅱ 试验黄 J et al。可切除的胰腺癌的新辅助治疗ized phase Ⅱ/Ⅲ trial conducted in Japan since January 2013 (clinical trial information: UMIN000009634)[35]. This study plans to enroll 360 patients with resectable pancreatic cancer, and randomizes them to either surgery followed by adjuvant chemotherapy with S1 for 6 mo or 2 mo of neoadjuvant chemotherapy with gemcitabine and S1 followed by surgery then 6 mo of adjuvant chemotherapy with S1. The primary study endpoint is resection rate for phase Ⅱ and overall survival for phase Ⅲ. This study plans to have 40 patients in each arm of the phase Ⅱ part, and moves on to phase Ⅲ if there are no more than 14 cases of nonresection in each arm of phase Ⅱ study. S-1 is an oral fluorinated pyrimidine, containing tegafur, 5-chloro-2,4dihydroxypyridine and potassium oxonate at a molar ratio of 1:0.4:1[36]. Tegafur is a pro-drug of 5-fluorouracil, and S1 has been shown to deliver higher 5-fluorouracil levels in the plasma and the tumor tissue. The safety and efficacy of combination chemotherapy with gemcitabine and S1 for resectable pancreatic cancer have been reported in pilot study[37]. The UVA-PC-PD101 study (NCT02305186; Safety and Immunological Effect of Pembrolizumab in Resectable or Borderline Resectable Pancreatic Cancer) is a phase Ⅰb/Ⅱ multicenter study in patients with resectable or borderline resectable pancreatic cancer. This study will randomize 56 subjects in 2:1 to the experimental arm with pembrolizumab given concurrently with chemoradiation or control arm receiving chemoradiation only. Patients in both arms will receive surgery and adjuvant chemotherapy with gemcitabine. The primary outcome measures are to determine the safety of neoadjuvant chemoradiation with capecitabine in combination with pembrolizumab, and to examine and compare the difference in the number of tumor infiltrating lymphocytes (TILs) in resected pancreatic tissue between experimental and control arms[38]. The investigators hypothesize chemoradiation recruits TILs to the microenvironment of pancreatic cancer causing overexpression of programmed death-ligand 1 (PD-L1). PD-L1 binds to PD-1 on T-cells, and suppress cytotoxic T-cells. Pembrolizumab is a monoclonal antibody that targets the PD-1, and release the inhibition on cytotoxic T-cells. Therefore, it is expected that there are more immune effects at tumor tissues in the experimental arm than control arm. It will be interesting to see if this will with suboptimal performance status (ECOG 2 and beyond) or ages older than 76 years old. Von Hoff and colleagues[30] reported increased median overall survival with nab-paclitaxel plus gemcitabine compared to gemcitabine alone in a randomized phase Ⅲ study with 861 patients [8.5 mo vs 6.7 mo (P < 0.001)]. Therefore both FOLFIRINOX and nab-paclitaxel/gemcitabine have become preferred regimens in advanced pancreatic cancer, and are currently explored in the neoadjuvant setting (Table 2).
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