Virtual Library

Start Your Search

Yuqing Lou



Author of

  • +

    Lunch & Poster Display session (ID 58)

    • Event: ELCC 2019
    • Type: Poster Display session
    • Track:
    • Presentations: 1
    • Moderators:
    • Coordinates: 4/11/2019, 12:30 - 13:00, Hall 1
    • +

      190P - ERGR-TKIs combined with chemotherapy delays intracranial progression in EGFR-mutant lung adenocarcinoma patients (ID 269)

      12:30 - 13:00  |  Author(s): Yuqing Lou

      • Abstract
      • Slides

      Background

      The aim of this study was to evaluate if the combination of epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor (TKI) plus chemotherapy could delay the presence and decrease the incidence of brain metastases (BM) in patients with EGFR-mutant advanced lung adenocarcinoma.

      a9ded1e5ce5d75814730bb4caaf49419 Methods

      100 eligible patients who developed BM were retrospectively reviewed. Patients received treatment with either EGFR-TKI monotherapy or EGFR-TKI plus chemotherapy. Intracranial progression-free survival (iPFS), systemic progression-free survival (PFS) and overall survival (OS) were evaluated.

      20c51b5f4e9aeb5334c90ff072e6f928 Results

      The median OS in the whole group was 37 months (interquartile range 6 to 94 months). Patients treated with EGFR-TKI plus chemotherapy had longer PFS compared with EGFR-TKI alone (16 vs. 10 months; P=0.030). Moreover, addition of chemotherapy showed an obvious iPFS advantage over EGFR-TKI alone (21 vs. 14 months; P=0.026). In all initial progression, less patients in the combination group developed BM compared to patients treated with EGFR-TKI monotherapy (15 vs. 27, P=0.002), with a hazard ratio (HR) of 0.64 (95% CI, 0.43−0.96) for BM in the combination group versus the EGFR-TKI monotherapy group.

      fd69c5cf902969e6fb71d043085ddee6 Conclusions

      The combination of EGFR-TKI plus chemotherapy demonstrated prolonged iPFS as well as PFS and reduced the occurrence and progression risk of intracranial metastases compared to EGFR-TKI monotherapy. EGFR-TKI plus chemotherapy is recommended for lung adenocarcinoma patients with EGFR-sensitive mutations.

      b651e8a99c4375feb982b7c2cad376e9 Legal entity responsible for the study

      The authors.

      213f68309caaa4ccc14d5f99789640ad Funding

      Science and Technology Commission of Shanghai Municipality, China (No.18441904700).

      682889d0a1d3b50267a69346a750433d Disclosure

      All authors have declared no conflicts of interest.

      cffcb1a185b2d7d5c44e9dc785b6bb25

      Only Active Members that have purchased this event or have registered via an access code will be able to view this content. To view this presentation, please login or select "Add to Cart" and proceed to checkout.

  • +

    Mini Oral session II (ID 63)

    • Event: ELCC 2019
    • Type: Mini Oral session
    • Track:
    • Presentations: 1
    • Moderators:
    • Coordinates: 4/11/2019, 16:40 - 17:40, Room C
    • +

      117O - Racial disparities in characteristics and prognosis in Asian versus white patients receiving atezolizumab: An ancillary analysis of POPLAR and OAK studies (ID 339)

      16:40 - 17:40  |  Author(s): Yuqing Lou

      • Abstract
      • Presentation
      • Slides

      Background

      Racial differences in characteristics and prognosis of Asiatic and White patients receiving immunotherapy have not been well described.

      a9ded1e5ce5d75814730bb4caaf49419 Methods

      We studied 390 patients from the POPLAR and OAK studies who received atezolizumab with evaluable biomarker parameters retrieved from a subsequent blood-based study. The differences of Asians versus Whites in baseline characteristics, outcomes and genetic mutations of atezolizumab therapy were assessed.

      20c51b5f4e9aeb5334c90ff072e6f928 Results

      Asiatic and White patients differed in characteristics including smoking history, baseline sum of the longest diameters (BLSLD), EGFR mutation frequency, programmed death-ligand 1 (PD-L1) expression and blood-based tumor mutational burden (bTMB) level. Overall survival (OS) was longer in Asians compared with Whites before (median OS: 18.7 vs. 11.1 mo; P = 0.005) and after (median OS: 20.9 vs. 12.6 mo; P = 0.005) propensity score matching (PSM). Race was an independent prognostic factor for OS (Asian vs White: HR 0.647, 95% CI 0.447-0.936, P = 0.021) in addition to performance status (PS), histology, BLSLD, and number of metastatic sites. The objective response rate (ORR) for Asians and Whites was 8.2% and 17.1%, respectively and disease control rate (DCR) was 51.2% and 47.7%, respectively. The blood-based mutational landscape differentiated between Asians and Whites. In the overall population, mutations of STK11, EGFR, KEAP1, POLE, GRM3, ATM and STAG2 were associated with treatment response while mutations of TP53, KEAP1, APC, RB1, CREBBP, EPHA5 and STAG2 were associated with OS. Comparing the frequency of efficacy- or prognosis- related mutations, Asians had more EGFR mutations and less TP53 and STK11 mutations than Whites.

      fd69c5cf902969e6fb71d043085ddee6 Conclusions

      Asians and Whites differed in the clinicopathological features and mutational landscape which may explain the superior efficacy of atezolizumab in Asiatic patients with NSCLC. This study conveys implications for further studies on racial disparity in the treatment of immunotherapy.

      b651e8a99c4375feb982b7c2cad376e9 Legal entity responsible for the study

      The authors.

      213f68309caaa4ccc14d5f99789640ad Funding

      Shanghai Municipal Education Commission-Gaofeng Clinical Medicine Support (No. 20161434).

      682889d0a1d3b50267a69346a750433d Disclosure

      All authors have declared no conflicts of interest.

      cffcb1a185b2d7d5c44e9dc785b6bb25

      Only Members that have purchased this event or have registered via an access code will be able to view this content. To view this presentation, please login, select "Add to Cart" and proceed to checkout. If you would like to become a member of IASLC, please click here.

      Only Active Members that have purchased this event or have registered via an access code will be able to view this content. To view this presentation, please login or select "Add to Cart" and proceed to checkout.