Author of

• 20171

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  P2.07 - Immunology and Immunotherapy (ID 708)

  • Event: WCLC 2017
  • Type: Poster Session with Presenters Present
  • Track: Immunology and Immunotherapy
  • Presentations: 1
  • Moderators:
  • Coordinates: 10/17/2017, 09:30 - 16:00, Exhibit Hall (Hall B + C)

  • 24462

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    P2.07-062a - Single Institutional Experience of the Use of PD-1 Inhibitors to Non-Small Cell Lung Cancer Patients with Preexisting Autoimmune Diseases (ID 10307)

    09:30 - 09:30  |  Presenting Author(s): Mehmet Altan
    • Abstract

    Background:
    Safety of PD-1/PD-L1 pathway inhibitors in patients with preexisting autoimmune disease is not well defined since these patients are generally excluded from immunotherapy trials. In this study we aimed to provide our institutional experience for the safety of PD-1 inhibitors in NSCLC patients with a history of autoimmune diseases.
    
    Method:
    In a retrospective study we collected genomic, demographic, clinical and pathologic data from patients with a history of autoimmune disease who received PD-1 inhibitors for their stage IV NSCLC as standard of care at MD Anderson Cancer Center (MDACC). Qualifying autoimmune diseases included autoimmune thyroiditis, rheumatologic, neurologic and dermatologic autoimmune conditions.
    
    Result:
    Between March 2016 and February 2017, 975 NSCLC patients were treated with PD-1 inhibitors, as standard of care at MDACC and 14 of those patients had preexisting autoimmune disease (5 rheumatoid arthritis, 3 seronegative arthritis, 3 psoriasis, 2 hashimoto thyroiditis, and 1 polymyalgia rheumatica). Three patients experienced flare of the autoimmune disease (2 psoriasis, and 1 rheumatoid arthritis) while on therapy and two of those patients were symptomatic from their preexisting autoimmune disease prior to the treatment. Median duration of exposure to therapy prior to flare was 21.4 weeks (range 7-48 weeks). These patients did not require treatment break or steroid use for autoimmune disease flare. 35% (5/14) of patients developed at least one immune related adverse effect (irAEs, one grade 2 and four grade 3) unrelated to the underlying autoimmune disease. There were no grade 4-5 irAEs observed. Updated results from larger patient cohort will be reported at the conference.
    
    Conclusion:
    In our single center experience, symptomatic flare of underlying autoimmune diseases was uncommon. However, patients with history of immune disease may be at higher risks for immune related toxicities during therapy with PD-1 pathway inhibitor. Further studies are needed to identify the safety profile of the PD-1 directed therapies in patient subsets with preexisting autoimmune diseases.