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M. Robert
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P2.04 - Poster Session with Presenters Present (ID 466)
- Event: WCLC 2016
- Type: Poster Presenters Present
- Track: Mesothelioma/Thymic Malignancies/Esophageal Cancer/Other Thoracic Malignancies
- Presentations: 1
- Moderators:
- Coordinates: 12/06/2016, 14:30 - 15:45, Hall B (Poster Area)
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P2.04-003 - Chemotherapy in Advanced Thymic Epithelial Tumors: Insights from the RYTHMIC Prospective Cohort (ID 4275)
14:30 - 15:45 | Author(s): M. Robert
- Abstract
Background:
Thymic Epithelial Tumors (TET) are rare intrathoracic malignancies, which may be aggressive and difficult to treat. In the advanced setting, chemotherapy may be delivered as a primary/induction therapy before subsequent surgery or definitive radiotherapy, and/or as exclusive treatment in patients for whom no focal treatment is feasible, and/or in the setting of recurrences. As no randomized trial and a limited number of prospective studies are available, there is paucity of prospective, multicentre evidence regarding response rates and survival of patients. RYTHMIC is the nationwide network for TET in France. The RYTHMIC prospective database is hosted by the French Intergroup (IFCT), and collects data for all patients diagnosed with TET, for whom management is discussed at a national multidisciplinary tumor board (MTB) based on consensual recommendations. Primary, exclusive chemotherapy, and chemotherapy for recurrence accounted for 149 (11%), 37 (3%), and 67 (5%) questions of a total of 1401 questions raised at the MTB between 2012 and 2015.
Methods:
All consecutive patients for whom chemotherapy and/or systemic treatment was discussed at the RYTHMIC MTB from 2012 to 2015 were identified from the RYTHMIC prospective database. Main endpoints were response rates and progression-free and overall survival.
Results:
At the time of analysis, data were available for 156 patients (80 thymic carcinomas, and 76 thymomas), for whom the management led to raise 283 questions at the MTB: 67 (24%) for primary chemotherapy, 35 (11%) for exclusive chemotherapy, and 181 (64%) for recurrences. For primary and exclusive chemotherapy, the most frequently administered regimen was CAP, producing response rates of 70% and 60%, respectively. A total of 104 patients received at least one line of chemotherapy for recurrence; 53 patients received second-line treatment, and 13 and 7 patients received third- and fourth line treatment. In the setting of first recurrence, carboplatine-paclitaxel combination was the most preferred regimen, administered to 54% of patients; overall response and disease control rates to systemic treatments for recurrences were 13% and 42% in thymic carcinomas, and 19% and 43% in thymomas (p=0.38 and p=0.92, respectively). Median recurrence-free survival after primary chemotherapy was 16.6 months; median progression-free survival after exclusive chemotherapy, and first-, second-, and third-line chemotherapy for recurrence were 6.0 months, and 7.6 months, 6.2 months, and 6.0 months.
Conclusion:
Our data provide with a unique insight in the efficacy of chemotherapy for advanced thymic epithelial tumors in a real-life setting; our results help the decision-making to better define the optimal therapeutic strategies.
