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Margarita Majem Tarruella

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    P1.01 - Advanced NSCLC (Not CME Accredited Session) (ID 933)

    • Event: WCLC 2018
    • Type: Poster Viewing in the Exhibit Hall
    • Track:
    • Presentations: 1
    • Moderators:
    • Coordinates: 9/24/2018, 16:45 - 18:00, Exhibit Hall
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      P1.01-63 - Correlation Between Immune-Related Adverse Events and Efficacy of Immune-Checkpoint Inhibitors in Patients with Non-Small Cell Lung Cancer (ID 13038)

      16:45 - 18:00  |  Presenting Author(s): Margarita Majem Tarruella

      • Abstract


      Immune-checkpoint inhibitors (ICIs) are a standard treatment in advanced non-small cell lung cancer (NSCLC). However, ICIs can induce immune-related adverse events (irAEs) that may compromise treatment continuation. Here we report our experience in patients with NSCLC, the incidence of irAEs and its correlation with efficacy.

      a9ded1e5ce5d75814730bb4caaf49419 Method

      We have retrospectively analyzed 101 patients with advanced NSCLC receiving ICIs in our institution from March 2014 to January 2018. IrAEs were graded following CTCAE v4.0. Kaplan Meier and log-rank tests were used to evaluate progression-free (PFS) and overall survival (OS). Analyses were performed using SPSS v24 package.

      4c3880bb027f159e801041b1021e88e8 Result

      Median age was 66.4 [37-85] years, 74.3% were male. 33 (32.7%) patients presented squamous and 68 (67.3%) non-squamous histology. Most frequent ICIs were nivolumab (50%), pembrolizumab (31%) and atezolizumab (16%), used as monotherapy (79.2%) or in combination with chemotherapy (20.8%). 37.6% patients were treated with ICIs in first line setting, while 62.4% in second or beyond. Median duration of treatment was 2.7 [0.6-26.2] months.

      61 (60.4%) patients developed 106 irAEs, with a mean of 1.02 [0-4] irAEs per patient. Most frequent irAEs were rash (24.5%), pruritus (22.6%), diarrhea (21%), arthritis (8.5%), hypothyroidism (7.6%), hyperthyroidism (2.9%), hepatitis (2.9%) and pneumonitis (2%). 8 (7.5%) patients experienced grades (G) 3-4 irAEs: 1 G3 pneumonitis, 4 G3 diarrhea, 1 G3 mucositis, 1 G3 nephritis and 1 G3 hemolytic anemia. One treatment-related death due to pneumonitis was reported.

      Patients receiving ICIs in second line or beyond experienced significantly less irAEs (54.1%) than those treated in first line (73.7%), p 0.04.

      47 (46.5%) patients received systemic corticosteroids during immunotherapy, 29.8% for irAEs management. 11 patients (10.9%) discontinued treatment due to irAEs. At the time of data analysis, 86.8% of irAEs had improved.

      With a median follow-up of 8.9 [0.6-48.2] months, median OS was superior in patients experiencing irAEs: not reached (NR) vs 7.8 [95%CI, 5.2-10.5] months (p 0.001). Similarly, PFS was significantly longer: 6.2 [95%CI, 2.3-10.1] vs 2.7 [95%CI, 1.8-3.5] months (p <0.0001). OS was higher in patients who did not receive steroids during ICIs therapy: NR vs 9.9 [95%CI, 6.8-13.0] months (p 0.024). No association was found between efficacy and the use of antibiotics in the 3 months before first ICIs injection or during treatment.

      8eea62084ca7e541d918e823422bd82e Conclusion

      In our series, the presence of irAEs in patients with advanced NSCLC treated with ICIs was associated with efficacy in terms of PFS and OS. A negative correlation between usage of systemic corticosteroids and outcomes was found.