Intensive weekly chemotherapy with docetaxel, epirubicin and carboplatin with G-CSF support in patients with advanced gastric cancer

Long-Term Oncological Outcomes of Granulocyte Colony-Stimulating Factor (G-CSF) Treatment in Gastrointestinal Cancers: A Systematic Review and Meta-Analysis

BACKGROUND

Granulocyte-colony stimulating factor (G-CSF) prophylaxis is widely used in gastrointestinal (GI) cancers. The use of G-CSF in GI cancers has not previously been investigated systematically in a meta-analysis. Thus, we systematically reviewed the literature to describe the G-CSF use and potential influence on long-term oncological outcomes in GI cancers.

METHOD

The literature search of this systematic review and meta-analysis was conducted in PubMed, Embase, Cochrane Library and Web of Science. The PRISMA-P guidelines were followed. Studies that reported data on patients with GI cancers undergoing oncological treatment with G-CSF prophylaxis were included. Outcomes of interest were overall survival (OS), progression-free survival (PFS) and adverse events (AE), specifically neutropenia grade III/IV. A time-to-event random-effects meta-analysis was conducted. Risk of bias was assessed using the Newcastle-Ottawa Scale and the Cochrane Risk of Bias Tool for Randomized Controlled Trials (RoB) tool.

FINDINGS

In total, 2452 articles were screened for eligibility. Ultimately, 13 studies were included with a total patient number of 2673. The included studies indicated a positive association between OS and G-CSF prophylaxis (HR 0.72, 95% CI: 0.56-0.91, I2: 54%, low quality evidence). No significant relation between G-CSF use and PFS was found in the pooled analyses (HR 0.74, 95% CI: 0.51-1.08, I2: 73%, moderate quality evidence). However, a positive effect of G-CSF use was found in the retrospective cohorts reporting data on PFS (HR 0.50, 95% CI: 0.32-0.77, I2: 0%). A marked drop in neutropenia grade III/IV rates was observed in patients treated with G-CSF (risk ratio (RR) 0.46, 95% CI: 0.28-0.77, I2: 72%, high quality evidence).

INTERPRETATION

G-CSF prophylaxis provides a reduction in neutropenia grade III/IV in patients with GI cancers (high level of certainty) and a favorable OS (low certainty), while PFS is unaffected (moderate certainty). Studies on PFS and G-CSF use are nonetheless limited.

Epirubicin-based compared with docetaxel-based chemotherapy for advanced gastric carcinoma: A systematic review and meta-analysis

Docetaxel or Epirubicin-based regimens are both approved for the treatment of metastatic gastric cancer. We perform a systemic review with metanalysis to evaluate the efficacy and toxicities of docetaxel-based chemotherapy compared with epirubicin-containing regimens. A metaanalysis of randomized studies in accordance with the preference guidelines for reported items in systematic reviews and meta-analyses is performed in which the databases of PubMed, the Cochrane Library, and the ASCO University Meeting were searched for relevant publications. The primary outcome was efficacy, the secondary toxicities. A total of 553 cases were included in the meta-analysis; 278 received epirubicin-based treatment and 313 received docetaxel. The pooled risk ratio to achieve an objective response and a disease control rate were 1.08 (95% CI 0.85-1.37; P=0.52) and 0.90 (95% CI 0.75-1.08; P=0.27) respectively. EPI arm showed a decrease in the risk of neutropenia, anemia, fatigue, asthenia and diarrhea, paraesthesia; docetaxel arm showed a decrease in the risk of leucopenia, thrombocytopenia, anorexia, nausea, nausea-vomiting, stomatitis and neutropenic fever. The results of our study suggest a similar activity of docetaxel and epirubicin-based chemotherapeutic regimens in metastatic gastric cancer. Other parameters as, comorbidity, concomitant diseases and prior therapies should be taken into account to address the clinician's choice in selecting the best therapeutical approach for any single patient.

Docetaxel, cisplatin and fluorouracil (DCF) regimen compared with non-taxane-containing palliative chemotherapy for gastric carcinoma: a systematic review and meta-analysis

BACKGROUND

Gastric carcinoma (GC) is one of the highest cancer-mortality diseases with a high incidence rate in Asia. For surgically unfit but medically fit patients, palliative chemotherapy is the main treatment. The chemotherapy regimen of docetaxel, cisplatin and 5-fluorouracil (DCF) has been used to treat the advanced stage or metastatic GC. It is necessary to compare effectiveness and toxicities of DCF regimen with non-taxane-containing palliative chemotherapy for GC.

METHODS

PubMed, EmBase, Cochrane Central Register of Controlled Trials and China National Knowledge Infrastructure databases were searched to select relative randomized controlled trials (RCTs) comparing DCF to non-taxane-containing chemotherapy for patients with palliatively resected, unresectable, recurrent or metastatic GC. Primary outcome measures were 1-year and 2-year overall survival (OS) rates. Secondary outcome measures were median survival time (MST), median time to progression (TTP), response rate and toxicities.

RESULTS

Twelve RCTs were eligible and 1089 patients were analyzed totally (549 in DCF and 540 in control). DCF regimen increased partial response rate (38.8% vs 27.9%, p = 0.0003) and reduced progressive disease rate (18.9% vs 33.3%, p = 0.0005) compared to control regimen. Significant improvement of 2-year OS rate was found in DCF regimen (RR = 2.03, p = 0.006), but not of 1-year OS rate (RR = 1.22, p = 0.08). MST was significantly prolonged by DCF regimen (p = 0.039), but not median TTP (p = 0.054). Both 1-year OS rate and median TTP had a trend of prolongation by DCF regimen. Chemotherapy-related mortality was comparable (RR = 1.23, p = 0.49) in both regimens. In grade I-IV toxicities, DCF regimen showed a major raise of febrile neutropenia (RR = 2.33, p<0.0001) and minor raises of leucopenia (RR = 1.25, p<0.00001), neutropenia (RR = 1.19, p<0.00001), and diarrhea (RR = 1.59, p<0.00001), while in other toxicities there were no significant differences.

CONCLUSION

DCF regimen has better response than non-taxane containing regimen and could potentially improve the survival outcomes. The chemotherapy-related toxicity of DCF regimen is acceptable to some extent.

Optimal use of recombinant granulocyte colony-stimulating factor with chemotherapy for solid tumors

Neutropenia is a frequent complication of anticancer chemotherapy (CT) often associated with life-threatening infections, hospitalization, dose reduction and/or delay in the administration of CT. Administration of recombinant granulocyte colony-stimulating factor (rG-CSF) reduces the duration and the degree of CT-neutropenia. rG-CSF that stimulates both neutropoiesis and neutrophil function, has become an integral part of supportive care during cytotoxic CT, to prevent febrile neutropenia (FN), particularly in patients with a risk of FN ≥ 20%. International guidelines have standardized conditions for rG-CSF administration, however, some 'gray zones' still exist around optimal timing and tailoring of this therapy. We report here the results of a research project aimed to extend the consensus on the optimal use of rG-CSF in association with CT in patient with solid tumours. We also propose a recently developed pharmacodynamic model, based on the biological effects of CT and rG -CSF on bone marrow compartments that clearly indicates within the prophylactic rather than therapeutic setting the better way of rG-CSF administration.