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C. Leger



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    MINI 25 - Trials, Radiation and Other (ID 142)

    • Event: WCLC 2015
    • Type: Mini Oral
    • Track: Thymoma, Mesothelioma and Other Thoracic Malignancies
    • Presentations: 1
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      MINI25.07 - Clinical Activity of Lucitanib in Advanced Thymic Epithelial Tumours (ID 2153)

      17:20 - 17:25  |  Author(s): C. Leger

      • Abstract
      • Presentation
      • Slides

      Background:
      Thymic epithelial tumours are rare malignancies for which there is no standard treatment for patients with advanced disease progressing on or after chemotherapy. Despite the lack of identified targets in thymic malignancies, several studies demonstrated that VEGFR and KIT pathways are the most relevant targets for therapeutic intervention. Lucitanib is an oral, potent, selective inhibitor of the tyrosine kinase activity of FGFR1-3, VEGFR1-3, and PDGFR α/β, all key targets involved in pro-angiogenic and proliferative pathways leading to tumour progression. Therefore, lucitanib could be a potential therapeutic alternative for patients with recurrent or refractory disease.

      Methods:
      This first in human study is currently evaluating oral lucitanib as monotherapy in various solid tumours. The escalation phase used a 3+3 design in patients with advanced solid tumours to establish the recommended phase II dose. Safety and efficacy were further evaluated in patients whose tumours were determined to be FGF aberrant (FGFR1 and/or 11q amplification) or in patients with tumours known to be anti-angiogenesis-sensitive such as thymic epithelial tumours. In addition, different doses and administration schedules were investigated.

      Results:
      Of the 134 patients treated in the study, 3 had B-type Thymoma (T) and 12 had Thymic Carcinoma (TC). Among these patients, median age was 54 years [range 37-72], 7 were males and 8 females. Twelve patients (80%) were treated at 12.5mg on daily basis. The other 3 patients (T) received 5, 15 and 20mg respectively. Patients had received a median of 2 previous anti-cancer treatments [range: 0-6]. Median duration of treatment with lucitanib was 7 cycles [range 2-44]. All patients were evaluable for anti-tumour activity according to RECIST v1.1. Two patients had confirmed partial response (1T / 1TC) lasting at least 7 months (TC patient is still ongoing) and 10 patients had a stable disease with 6 of them lasting at least 6 months. To date, 4 patients are still ongoing and receiving benefit from lucitanib independently of the number of previous regimens. The most common adverse events related to lucitanib in this population (all grades, all doses) were hypertension (80%), hypothyroidism (53%), proteinuria (53%) and diarrhoea (40%). There was no major bleeding event reported. These findings were in line with the overall safety profile of lucitanib already described.

      Conclusion:
      The results of this tumour cohort analysis suggest that lucitanib has signs of clinical activity in patients with advanced thymic epithelial tumours, and should be further investigated in dedicated studies.

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