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Sonia Yip

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    OA08 - Mesothelioma: Immunotherapy and microRNA for Diagnosis and Treatment (ID 907)

    • Event: WCLC 2018
    • Type: Oral Abstract Session
    • Track: Mesothelioma
    • Presentations: 1
    • Moderators:
    • Coordinates: 9/24/2018, 15:15 - 16:45, Room 201 BD
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      OA08.02 - DREAM - A Phase 2 Trial of Durvalumab with First Line Chemotherapy in Mesothelioma: Final Result (ID 12022)

      15:25 - 15:35  |  Author(s): Sonia Yip

      • Abstract
      • Presentation
      • Slides


      We report here the final results of a single-arm, phase 2 trial designed to determine the activity, safety and tolerability of durvalumab, cisplatin and pemetrexed as first line therapy in MPM. ANZ Clinical trial registry number: ACTRN12616001170415

      a9ded1e5ce5d75814730bb4caaf49419 Method

      Participants were considering first line chemotherapy for MPM, were unsuitable for radical surgery, had an un-irradiated target lesion, and had good performance status (ECOG PS 0-1). Objective tumour response (OTR) and progression free survival (PFS) were assessed primarily according to the modified Response Evaluation Criteria in Solid Tumors for MPM (mRECIST) and as secondary endpoints according to RECIST modified for immunotherapy (iRECIST). Study treatment was durvalumab 1125mg, cisplatin 75mg/m2, and pemetrexed 500mg/m2 all given intravenously on day 1, and repeated every 3 weeks for a maximum of 6 cycles, followed by durvalumab 1125 mg every 3 weeks until progression, unacceptable toxicity, or a maximum total of 12 months. The primary endpoint was PFS at 6 months (PFS6). The sample size of 54 provided 90% power to distinguish the observed proportion PFS6 from a null hypothesis of 45% versus an alternative of 65% with a 1-sided alpha of 5%. Tissue and blood samples were required and collected for translational correlative studies.

      4c3880bb027f159e801041b1021e88e8 Result

      We recruited 54 participants from Dec 2016 to Sep 2017. Median age was 68 (range 42-82), 82% were male, 60 had ECOG PS 0, and 82% had epithelioid histology. Dose intensities were 97% for cisplatin and 94% for durvalumab. The proportion PFS6 was 57% (31/54, 90% CI 45-68%); median PFS was 6.9 months (95% CI 5.5-9.0). The OTR rate was 48% (95% CI 35-61%) according to mRECIST and 50% (95% CI 37-63) according to iRECIST. The median duration of response was 6.5 months. Grade 3-5 adverse events occurred in 36 participants, including neutropenia in 13%, nausea in 11%, anaemia in 7%, fatigue in 6% and any grade peripheral neuropathy in 35%. There were 4 deaths on study, none attributed to durvalumab. Immune-related adverse events occurred in 17 participants, and were of grade 3 or worse in 8, including increased lipase (1), pancreatitis (1), and renal impairment (1).

      8eea62084ca7e541d918e823422bd82e Conclusion

      The combination of durvalumab, cisplatin, and pemetrexed has demonstrated sufficient activity, safety, and tolerability as first line therapy in MPM to warrant further evaluation in a large-scale, randomised phase 3 trial.


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