Assessing the relative effectiveness and tolerability of treatments in small cell lung cancer: A network meta-analysis

[First-line Chemotherapy for Extensive-disease Small Cell Lung Cancer: A Network Meta-analysis]

背景与目的

顺铂/卡波联合伊立替康/依托泊苷双药化疗方案被推荐为治疗广泛期小细胞肺癌（small cell lung cancer of extensive disease, ED-SCLC）的一线化疗方案。我们在网状meta分析中，通过合成直接证据和间接证据，对推荐的化疗方案的短期疗效进行排序。

方法

我们在EMBASE、PubMed、CENTRAL及clinicaltrial.gov数据库检出了相关疗效比较的随机对照试验。ROB工具被用于评估纳入研究的质量，Stata 13.1被用于统计学合成。

结果

该研究共纳入10项随机对照研究，共计2, 378名患者。与依托泊苷联合卡铂相比，肿瘤的完全缓解率（complete remission rate, CR）在伊立替康联合卡铂组明显提高（OR=3.33, 95%CI: 1.47-7.54, P < 0.05）。伊立替康联合卡铂治疗后CR明显优于依托泊苷联合顺铂（OR=4.09, 95%CI: 1.18-14.12, P < 0.05）。

结论

本研究结果显示：伊立替康联合卡铂一线治疗ED-SCLC的疗效优于依托泊苷。

Comparing the adverse effects of platinum in combination with etoposide or irinotecan in previously untreated small-cell lung cancer patients with extensive disease: A network meta-analyses

BACKGROUND

The safety of front-line chemotherapies for the treatment of extensive stage small-cell lung cancer (ED-SCLC) is uncertain. We carried out a network meta-analysis to compare the toxicity of different therapies for ED-SCLC.

METHODS

We searched EMBASE, PubMed, CENTRAL and clinicaltrials.gov. We performed network meta-analysis on hematological (anemia, leukopenia, neutropenia, and thrombocytopenia) and non-hematological toxicities (diarrhea, infection, and nausea and vomiting).

RESULTS

Nine studies with 2317 patients were included. Etoposide with carboplatin (EC) was associated with a higher incidence of anemia (odds ratio [OR] 2.02, 95% confidence interval [CI] 1.13-3.63), leukopenia (OR 2.67, 95% CI 1.25-5.72), neutropenia (OR 12.08, 95% CI 2.13-68.66), and thrombocytopenia (OR 2.73, 95% CI 1.27-5.85) compared with irinotecan with carboplatin (IC). Similarly, etoposide with cisplatin (EP) was associated with a higher incidence of anemia (OR 1.70, 95% CI 1.13-2.56), leukopenia (OR 2.65, 95% CI 1.34-5.28), neutropenia (OR 5.70, 95% CI 2.93-11.10), and thrombocytopenia (OR 3.26, 95% CI 1.66-6.38) compared with irinotecan with cisplatin (IP). EC was associated with a lower incidence of diarrhea (OR 0.26, 95% CI 0.10-0.68) compared with IC, and EP was associated with a lower incidence of diarrhea (OR 0.09, 95% CI 0.03-0.25) and nausea and vomiting (OR 0.53, 95% CI 0.33-0.84) than IP.

CONCLUSIONS

Hematological toxicities were most common in EC-treated patients, while the lowest incidence occurred with IP treatment. The IP regimen was associated with the highest incidence of toxicities of the digestive tract, while the lowest incidence occurred with EC treatment.

In vitro efficacy of doxorubicin and etoposide against a feline injection site sarcoma cell line

Feline injection site sarcoma (ISS) is a locally invasive tumor, in which surgical treatment is frequently combined with radiation or chemotherapy to improve tumor control. The focus of this study was to evaluate the cytotoxic effects of doxorubicin or etoposide on a feline injection site sarcoma cell line (JB) and to assess the impact of combining these drugs on cell death and cell cycle. Both single agent and combination drug administration increased cell death and significantly reduced the number of viable cells. Cells in G0/G1 were significantly reduced while the G2/M fraction was significantly increased following treatment. Collectively, combining doxorubicin and etoposide at the lower EC yielded comparable results to the EC50 of either drug alone in degree of cytotoxicity, level of apoptosis, and % of cells in G2/M. The results of this study indicate that doxorubicin and etoposide alone and in combination differentially alter ISS cell viability and cycle.