Author of

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  OA18 - New Insights in the Treatment of Thymic Malignancies (ID 408)

  • Event: WCLC 2016
  • Type: Oral Session
  • Track: Mesothelioma/Thymic Malignancies/Esophageal Cancer/Other Thoracic Malignancies
  • Presentations: 1
  • Moderators:N. Girard, S.B. Watzka
  • Coordinates: 12/07/2016, 11:00 - 12:30, Schubert 2

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    OA18.06 - Treatment, Outcome and Prognostic Factors of Patients with Thymic Epithelial Tumors at First Recurrence (ID 5594)

    11:55 - 12:05  |  Author(s): A. Sheel
    • Abstract
    • Presentation
    • Slides

    Background:
    The treatment of patients with recurrent thymic tumors remains uncertain due to limited data because of the rare nature of this disease. This retrospective analysis was conducted to investigate clinical characteristics, outcomes and possible prognostic factors of patients presenting with a first recurrence of thymic tumors.
    
    Methods:
    107 patients with thymic neoplasms registered as C37 by ICD10 coding at Guy’s Hospital during the 2007-2016 period with first recurrence following primary treatment were selected and retrospectively reviewed via descriptive analysis. Differences in survival were assessed using Kaplan-Meier analysis and uni & multivariate Cox proportional hazards regression analyses.
    
    Results:
    25 patients (14 male & 11 female) with a median age of 51 years (range 36-80 years) experienced a first recurrence of thymoma (20 patients – 80%) or thymic carcinoma (5 patients – 20%) with a median time from diagnosis of 36 months (range, 7-270). At diagnosis, modified Masaoka disease stage was IIA/IIB/IIIA/IIIB/IVA/IVB in 4/0/8/2/6/5 patients; 18 patients’ (72%) primary resection was R0/R1/R2 in 11/3/4 patients; 9 patients (36%) received radiotherapy; 19 received chemotherapy (76%); CAP (n=10) and platinum-etoposide (n=6) regimens. At first relapse, 19 patients (76%) had thoracic recurrence and 6 patients (24%) extrathoracic recurrence. Nine patients (26%) underwent redo surgery, 3 of which recieved chemotherapy prior to resection. Overall resection status was 2/5/1 (1 patient’s data is not yet assessable) R0/R1/R2. Chemotherapy was administered in 17 patients (68%) with a median cycle of 4 (range, 1-6): 16 patients received combination chemotherapy consisting of platinum etoposide (n=10) or cisplatin-anthracycline based (CAP/CAV/AC n=5). Dose reduction and withdrawal were reported in 3 (18%) and 7 (41%) patients, respectively. In 4 out of these 7 patients withdrawal was due to PD; disease control rate (=CR+PR+SD) was 67% (in 10 out of 15 assessable patients). Three patients (12%) received radiotherapy of which one was treated exclusively with radiotherapy. Time to progression since the first recurrence was 12 months (range 2-52 months); in 16 patients extrathoracic recurrence was seen in 4 patients (25%) and thoracic in 12 patients (75%). Eight recurring patients (50%) received further chemotherapy. With a median follow-up of 32.5 months, 19 patients (75%) are alive and 2 (8%) disease-free; median OS has not been reached, median PFS was 29.5 months (range, 26.3-33.2). Analysis of possible prognostic factors will be presented.
    
    Conclusion:
    Patients with first recurrence of thymic tumors may benefit from combination chemotherapy and surgery when feasible.
    
    

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