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M. Culligan



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    ED 12 - Caring for the Lung Cancer Patient (ID 12)

    • Event: WCLC 2015
    • Type: Education Session
    • Track: Nursing and Allied Professionals
    • Presentations: 1
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      ED12.02 - Addressing the Nutritional Needs of the Lung Cancer Patient (ID 1819)

      14:46 - 14:59  |  Author(s): M. Culligan

      • Abstract
      • Presentation

      Abstract not provided

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    MTE 28 - Need for Team Building in Caring for Patients with Thoracic Malignancies (Ticketed Session) (ID 80)

    • Event: WCLC 2015
    • Type: Meet the Expert (Ticketed Session)
    • Track: Nursing and Allied Professionals
    • Presentations: 1
    • Moderators:
    • Coordinates: 9/09/2015, 07:00 - 08:00, 102+104+106
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      MTE28.01 - Need for Team Building in Caring for Patients with Thoracic Malignancies (ID 2015)

      07:00 - 07:30  |  Author(s): M. Culligan

      • Abstract
      • Presentation

      Abstract not provided

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    ORAL 26 - Clinical Trials 2 (ID 127)

    • Event: WCLC 2015
    • Type: Oral Session
    • Track: Thymoma, Mesothelioma and Other Thoracic Malignancies
    • Presentations: 1
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      ORAL26.06 - Prospective Assessment of Proton Therapy for Malignant Pleural Mesothelioma (ID 3071)

      11:39 - 11:50  |  Author(s): M. Culligan

      • Abstract
      • Presentation
      • Slides

      Background:
      Use of radiotherapy (RT) to treat malignant pleural mesothelioma (MPM) has been limited due to reported significant morbidity and risk of fatal pneumonitis when treating large pleural volumes. To date, RT for MPM has generally been limited to palliation, prophylaxis of surgical tract sites, and adjuvant therapy generally after extrapleural pnuemonectomy. Reports of RT for MPM have employed photons and electrons nearly exclusively. Proton therapy (PT) can significantly reduce irradiation to lung and other critical organs, possibly reducing treatment toxicities and enabling novel RT indications. To date, only a single case series of 4 patients has reported on PT for MPM. We report our prospective experience using PT as adjuvant or definitive therapy for MPM and hypothesized that PT will have low rates of esophagitis and pneumonitis, while providing excellent local control.

      Methods:
      All consecutive patients diagnosed with MPM from 2011-2015 and treated at the Penn Mesothelioma and Pleural Program with PT on a prospective registry study were included for this Institutional Review Board-approved analysis. Local control, defined as lack of tumor progression in the RT portal, and overall survival were measured from PT completion to last follow-up or death. Toxicities were scored using CTCAEv4.

      Results:
      Sixteen patients treated to 17 PT courses were included. Patients were predominantly male (81%) and Caucasian (100%) with epithelial histological subtype (82%) and stage III-IV disease (94%). Patients were a median of 69.8 years old at PT start, which was delivered at a median of 11.1 months (range 3.5-69.3 months) after diagnosis. All patients received pemetrexed plus cisplatin or carboplatin prior to (n=15) or concurrent with (n=1) PT. PT was administered as adjuvant therapy following lung-sparing radical pleurectomy (n=8), to sites of gross disease following progression on systemic therapy (n=8), or as initial definitive therapy with concurrent chemotherapy (n=1). Patients were treated to a median dose of 51.75Gy (CGE) in 2.0Gy daily fractions (range 50.0-75.0Gy/1.8-2.5Gy). At a median follow-up of 5 months from PT completion, all patients had durable local control throughout the study period. Five patients died at a median of 5.4 months following PT. Median overall survival for the cohort has not yet been reached, and 6- and 12-month survival rates were 35% and 24%, respectively. No patients experienced grade ≥3 acute or late toxicity. Across the 17 PT courses, acute grade 2 toxicities included radiation dermatitis (n=8), dysphagia/esophagitis (n=4), anorexia (n=3), fatigue (n=2), and cough (n=1). Late grade 2 toxicity included a single patient with radiation pneumonitis (6%). Overall, patients experienced no significant change in ECOG performance score from PT beginning to end (mean 0.82 to 0.88).

      Conclusion:
      This is the largest report of PT for MPM and demonstrated PT is well tolerated with a favorable toxicity profile compared with photon reports. As such, PT may better allow for integration of RT in multimodality therapy for MPM. This study also demonstrated the efficacy of PT, with local control achieved following all 17 treatment courses. Longer follow-up and additional patients are needed to assess late toxicities and overall survival after PT.

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