[Show abstract][Hide abstract] ABSTRACT: Purpose
This retrospective study evaluates the efficacy and safety of S-1 chemotherapy for recurrent and metastatic nasopharyngeal carcinoma patients after failure of platinum-based chemotherapy.
Patients and methods
Thirty-nine patients with recurrent and metastatic nasopharyngeal carcinoma who failed previous platinum-based chemotherapy received oral S-1 chemotherapy (twice daily from day 1 to 14) every 3 weeks. The dose of S-1 was determined according to the body surface area (BSA): 40 mg twice a day for BSA <1.25 m2; 50 mg twice a day for 1.25 m2 ≤BSA<1.5 m2; and 60 mg twice a day for BSA ≥1.5 m2.
Treatment was well tolerated. Most adverse events were mild. Grade 3 hematological toxicity occurred in 7.7%. There was one complete response (2.6%) and 12 partial responses (30.7%), giving an overall response rate of 33.3% (95% CI [confidence interval], 21.7–50.8). Median time-to-progression was 5.6 months, and median survival was 13.9 months. One- and 2-year survival rates were 60% and 26%, respectively.
S-1 monotherapy is considered a safe and effective treatment option for recurrent and metastatic nasopharyngeal carcinoma patients after failure of platinum-based chemotherapy.
Preview · Article · Aug 2014 · Drug Design, Development and Therapy
[Show abstract][Hide abstract] ABSTRACT: Purpose:
There is no standard second-line regimen for recurrent and metastatic nasopharyngeal carcinoma patients after failure of cisplatin-based chemotherapy. A multicenter phase II study was conducted to evaluate the efficacy and toxicity of capecitabine combined with nedaplatin for these patients.
Patients and methods:
In the multicenter, open-label, single-arm phase II study, patients with recurrent and metastatic nasopharyngeal carcinoma who failed to previous cisplatin-based chemotherapy were enrolled. Patients received oral capecitabine (1,000 mg/m(2) twice daily from day 1 to 14) and intravenous nedaplatin (80 mg/m(2), day 1) every 3 weeks for two cycles at least.
A total of forty-eight patients were enrolled and included in the intention-to-treat analysis of efficacy and adverse events. Treatment was well tolerated. Grade 3/4 toxicities included neutropenia (8.4 %), anemia (2.1 %), diarrhea (4.2 %), stomatitis (6.3 %), and hand-foot syndrome (HFS) (4.2 %). There were two complete response (4.2 %), eighteen partial responses (37.5 %), giving an overall response rate of 41.7 % [95 % confidence interval (CI) 27.7-55.8]. With a median follow-up period of 12.1 months, the median time to progression was 5.8 months (95 % CI 3.9-7.8 months) and median overall survival was 12.4 months (95 % CI 9.6-16.8 months).
Capecitabine combined with nedaplatin offers a satisfactory clinical activity and an acceptable safety profile for recurrent and metastatic nasopharyngeal carcinoma patients after failure of cisplatin-based chemotherapy.
No preview · Article · Jun 2013 · Cancer Chemotherapy and Pharmacology
[Show abstract][Hide abstract] ABSTRACT: To evaluate the association between survival and expressions of epidermal growth factor receptor(EGFR) and protein kinase B(AKT) in gastric carcinoma specimens.
EGFR and AKT were detected by immunohistochemistry in 84 patients with gastric cancer and 15 controls. Association between their expressions and clinical characteristics as well as prognosis were analyzed.
In patients with gastric cancer,expression rates were significantly higher than those in 15 normal gastric tissues for EGFR(55.9% vs. 20%, P<0.05) and AKT(64.3% vs. 6.7%, P<0.01). Expression of EGFR was associated with late staging(P<0.01), while expression of AKT was assoicated with lymph node metastasis(P<0.01). Overall 5-year survival rate was significantly higher in patients with EGFR negative expression (49.0% vs. 22.0%, P<0.05). Overall 5-year survival rate was significantly higher in patients with AKT expression(45.7% vs. 30.2%, P<0.05).
Expression of EGFR and AKT negative may be used to evaluate the degree of differentiation and prognosis in patients with gastric carcinoma.
No preview · Article · Feb 2011 · Zhonghua wei chang wai ke za zhi = Chinese journal of gastrointestinal surgery
[Show abstract][Hide abstract] ABSTRACT: This study was purposed to explore the Rituximab (RTX)-mediated sensitization of B-NHL cell lines to apoptosis induced by Gemcitabine or Navelbine and its possible mechanism. The inhibitory rate of B-NHL cell proliferation was detected by XTT method, the IC₅₀ from Gemcitabine or Navelbine and combination of Gemcitabine or Navelbine with RTX was compared. The expression level of antiapoptotic protein BCL-2 in Daudi, Ramos, Raji and Namalwa cells treated with RTX of 20 μg/ml for 24 hours was detected by Western blot. The results showed that the RTX as a single agent could weakly induce the apoptosis of Daudi, Namalwa, Raji and Ramos lymphoma cell lines, the inhibiting rate of cell proliferation ranged from 3% to 10%; RTX could sensitize significantly the cytotoxity of Gemcitabine or Navelbine in Daudi, Namalwa and Raji cell lines; The expression of BCL-2 in Raji and Namalwa cell lines treated with RTX of 20 microg/ml for 24 hours was down-regulated. It is concluded that RTX can sensitize the cytotoxicity of Gemcitabine or Navelbine to the human lymphoma cell lines which displayed the synergistic effect on Daudi, Namalwa and Raji cell lines. The BCL-2 expression level in Raji and Namalwa cell lines treated by RTX is down-regulated which may be one of the mechanisms sensitizing the cytotoxicity of Gemcitabine or Navelbine.
No preview · Article · Aug 2010 · Zhongguo shi yan xue ye xue za zhi / Zhongguo bing li sheng li xue hui = Journal of experimental hematology / Chinese Association of Pathophysiology
[Show abstract][Hide abstract] ABSTRACT: The aim of this study was to investigate the effect of anti-CD20 monoclonal antibody (McAb) on induction of apoptosis in malignant B cell lines in vitro and to explore its possible mechanism. The human Burkitt's lymphoma cell lines (Daudi, Namalwa, Raji and Ramos cells) were cultured in vitro. The inhibitory rate of cell proliferation was detected by XTT assay, the apoptosis of cells was determined by flow cytometry. The expression of BCL-2 in human Burkitt's lymphoma cell lines (Daudi, Namalwa, Raji and Ramos cells) treated with rituximab (20 microg/ml) for 24 hours was analyzed by Western blot. The results showed that the anti-CD20 McAb had a slight anti-proliferation effect on the Daudi, Namalwa, Raji cell lines and no effect on the Ramos cell line. There is no correlation between the effect and the concentration of anti-CD20 McAb. Anti-CD20 McAb as a single agent could weakly induce the apoptosis of four cell lines. The inhibitory rate of cell proliferation ranged from 3% to 10%. Expression of BCL-2 protein was down-regulated after treated by anti-CD20 McAb for 24 hours in Raji and Namalwa cell lines. It is concluded that the anti-CD20 McAb as a monomer can slightly inhibit the proliferation of Daudi, Namalwa and Raji cell lines, the inhibition does not dependent on the treating time and the concentrations of anti-CD20 McAb. Anti-CD20 McAb as a monomer can weakly induce the apoptosis of four cell lines. Expression of BCL-2 in Raji and Namalwa cell lines is down-regulated after the cells were treated by anti-CD20 McAb for 24 hours. Down-regulation of BCL-2 expression may be one of the mechanisms enhancing the cytotoxicity of cytotoxic drugs.
No preview · Article · Sep 2009 · Zhongguo shi yan xue ye xue za zhi / Zhongguo bing li sheng li xue hui = Journal of experimental hematology / Chinese Association of Pathophysiology
[Show abstract][Hide abstract] ABSTRACT: To investigate the relationship of clinopathological features and outcome of rituximab treatment for diffuse large B-cell lymphoma (DLBCL).
Sixty-nine patients with DLBCL received intravenous infusion of rituximab in combination with different chemotherapy regimens have been retrospectively analyzed. The influencing factors such as age, stage, serum level of lactate dehydrogenase (LDH) and bulky disease were analyzed retrospectively in terms of the response. The anti-/ pro-apoptosis proteins were detected by immunohistochemistry (SP methods). The correlation of protein expression with efficacy of rituximab treatment was also analyzed.
In the patients with previously untreated aggressive B-NHL, the combination of rituximab with chemotherapy achieved an overall response rate (ORR) of 90.7% and CR of 69.8%, while in the patients with relapsed disease, that was 80.8% (ORR) and 30.8% (CR). The disease stage (P = 0.046), serum lactate dehydrogenase (LDH) (P = 0.024), physical status (P = 0.009) and bulky disease (P = 0.013) were found to be unfavorable factors for the immunochemotherapy. The treatment efficacy in the patients with Bcl-2 overexpression was better than that in cases with negative one. No correlation of the bax and survivin expression with immunochemotherapy efficacy was observed.
The immunochemotherapy regimen (rituximab plus chemotherapy) can improve the response rate and CR rate without significant increase in toxicity in patients with diffuse large B-cell lymphoma. The advanced stage, high serum LDH level, relapsed disease, bulky disease and negative Bcl-2 expression are unfavorable factors affecting the therapeutic efficacy.
No preview · Article · Jun 2008 · Zhonghua zhong liu za zhi [Chinese journal of oncology]
[Show abstract][Hide abstract] ABSTRACT: CHOP regimen is a standard treatment for patients with diffuse large B-cell non-Hodgkin's lymphoma (NHL), and its 5-year overall survival (OS) rate is 30%-40%. Rituximab is a chimeric monoclonal antibody (MoAb) directly against CD20-positive B cells, and has good effect on diffuse large B-cell NHL. Rituximab combined with standard chemotherapy has been approved for treating aggressive B-cell NHL in Europe and the US. This study was to determine efficacy and safety of the combination of Rituximab and CHOP regimen in treating Chinese patients with CD20-positive diffuse large B-cell NHL.
From Sep. 2003 to Nov. 2004, a total of 63 patients in 9 centers were enrolled. All the patients were randomized into 2 groups: 32 received CHOP regimen alone (CHOP group), and 31 received Rituximab and CHOP regimen (R-CHOP group). All patients signed informed consent. The complete response rates, overall response rates, and side events of the 2 groups were compared.
The complete response rates were similar in R-CHOP and CHOP groups (41.9% vs. 37.5%, P=0.719); the overall response rates were slightly higher in R-CHOP group than in CHOP group (83.8% vs. 65.6%, P=0.096). Disease progression during treatment was reported for 7 (21.9%) patients in CHOP group and 1 (3.2%) patient in R-CHOP group (P=0.026). The occurrence rates of adverse events were similar in R-CHOP and CHOP groups (65.6% vs. 67.7%, P=0.859). The most common adverse event was leukopenia; fever and chills were rather common in R-CHOP group. Clinically relevant toxicity was similar in both groups.
When compared with standard CHOP alone, the addition of Rituximab to standard CHOP regimen reduces the risk of treatment failure in patients with diffuse large B-cell NHL, and doesn't increase the occurrence of chemotherapy-related adverse events.
No preview · Article · Dec 2005 · Ai zheng = Aizheng = Chinese journal of cancer
[Show abstract][Hide abstract] ABSTRACT: The efficacy of standard treatment, including cyclophosphamide, adriamycin, vincristine, and prednisone (CHOP regimen), for patients with aggressive B-cell non-Hodgkin's lymphoma (B-NHL) is still unsatisfactory. Rituximab, a chimeric monoclonal antibody against B-cell antigen CD20, has therapeutic activity in B-NHL. This study was to determine efficacy and safety of the combination of rituximab and chemotherapy in treating Chinese patients with aggressive B-NHL, and to analyze influence factors on the response.
Records of 75 patients with aggressive B-NHL,received infusions of 375 mg/m(2) of rituximab combined with or without chemotherapy in our center,have been retrospectively analyzed. Influence of age, clinical stage, serum level of lactate dehydrogenase (LDH), international prognostic index (IPI) score, and bulk disease on response were evaluated.
Response rate of rituximab alone group was 83.3% (5/6)with complete response (CR) rate of 66.7% (4/6). In 43 naive patients, the combination of rituximab and chemotherapy achieved an overall response rate (ORR) of 90.7% with CR rate of 67.4%; while in 26 recurrent or relapsed patients, the combination therapy achieved an ORR of 79.2% with CR rate of 29.2% (7/26), and partial response (PR) rate of 50.0% (13/26), 6 patients had a progressive disease (20.8%). Efficacy of immunochemotherapy was poor on patients with advanced disease(P=0.046), increased serum level of LDH (P=0.024), recurrence or relapse (P=0.009), and bulk disease (P=0.013). All patients can tolerate the treatment. No treatment-related death occurred.
The addition of rituximab to the chemotherapy regimen increases the response rate and CR rate in Chinese patients with aggressive B-NHL, without a clinically significant increase in toxicity. Patients with advanced disease, higher serum level of LDH, recurrence or relapse, and bulk disease had a poor response.
No preview · Article · Dec 2004 · Ai zheng = Aizheng = Chinese journal of cancer