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Q. Zou



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    MINI 15 - Chemotherapy Developments for Lung Cancer (ID 128)

    • Event: WCLC 2015
    • Type: Mini Oral
    • Track: Treatment of Advanced Diseases - NSCLC
    • Presentations: 1
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      MINI15.04 - Phase I Study of Continuous Intravenous Infusion of Rh-Endostatin Combined with Pemetrexed and Carboplatin in Advanced NSCLC (ID 2652)

      16:45 - 18:15  |  Author(s): Q. Zou

      • Abstract
      • Presentation
      • Slides

      Background:
      Endostar [TM ](rh-endostatin, 7.5mg/m[2], 3-hour intravenous infusion (IV) daily for 14 days) was approved by Chinese FDA for treatment of advanced NSCLC in 2005. Considering continuous intravenous infusion (CIV) may be a more favorable way to deliver Endostar, we designed the phase I study to evaluate pharmacokinetics, tolerability and efficacy of Endostar CIV at different doses combined with pemetrexed and carboplatin in untreated advanced non-squamous NSCLC patients.

      Methods:
      In phase Ia, 19 patients were assigned to 4-6 cycles (21 days/cycle) of pemetrexed (500mg/m[2], day 1), carboplatin (AUC 5, day 1), and CIV Endostar from day 2 to day 21 at doses of 7.5mg (8 patients), 15mg (6 patients), 30mg (5 patients) /m[2]/d, respectively. Serum samples were obtained 0h、1h、2h、4h、8h、24h、48h、72h、96h、120h、122h、124h、128h、132h and 144h after the Endostar infusion. In phase Ib, another 21 patients received CIV Endostar at doses of 7.5mg (10 patients) or 15mg (11 patients) /m[2]/d with pemetrexed + carboplatin.

      Results:
      The AUC~0-120h~ of Endostar 7.5mg/m[2] CIV and 7.5mg/m[2] 3-hour IV daily were comparable (12.6±7.6 vs 13.3±8.8 ug/mL × hour). C~max~ (ng/ml) (7.5mg: 152.4±83.7; 15mg: 287.2±122.6; 30mg: 398.2±52.6) and AUC~0-120h~ (ug/mL × hour) (7.5mg: 12.6±7.6; 15mg: 21.2±10.8; 30mg: 33.4±8.5) were linear with dose. In phase Ia, the most common adverse events were anemia (78.9%, G3/4 10.5%), neutropenia (68.4%, G3/4 31.6%), thrombocytopenia (63.2%, G3/4 10.5%), LDH increase (47.4%), aminotransferase increase (42.1%), and supraventricular arrhythmia (26.3%). No grade 3 or 4 non- hematologic adverse event was observed. The incidence of supraventricular arrhythmia in 30mg cohort (40%) was higher than the other two cohorts. Thus 30mg cohort was excluded in Ib phase. Totally, 15 patients in 7.5mg cohort and 17 patients in 15mg cohort were evaluable for treatment response. The DCR and ORR were 80.0% and 60.0% in 7.5mg cohort, 94.1% and 76.5% in 15mg cohort, respectively.

      Conclusion:
      The pharmacokinetics of Endostar CIV and daily IV were comparable. At doses of 7.5mg and 15mg/m[2]/d, Endostar CIV was well tolerated with encouraging anti-tumor efficacy. Increasing dose of Endostar might lead to better response.

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