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Dongyong Yang

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    EP1.03 - Biology (ID 193)

    • Event: WCLC 2019
    • Type: E-Poster Viewing in the Exhibit Hall
    • Track: Biology
    • Presentations: 1
    • Moderators:
    • Coordinates: 9/08/2019, 08:00 - 18:00, Exhibit Hall
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      EP1.03-14 - Clinicopathologic Characteristics and Outcomes of Chinese Patients with Non-Small-Cell Lung Cancer and INPP4B Mutations (ID 109)

      08:00 - 18:00  |  Author(s): Dongyong Yang

      • Abstract


      Inositol polyphosphate 4-phosphatase B (INPP4B) has been identified as a tumour suppressor in different human cancers. However, the role of INPP4B in the angiogenesis of human non-small cell lung cancer (NSCLC) remains unclear. The aim of this study is to investigate mutations and prognosis of NSCLC harboring INPP4B mutations.


      A total of 750 patients with non-small-cell lung cancer were recruited between July 2012 and December 2016. The status of INPP4B mutations and other genes were detected by next generation sequencing.


      INPP4B gene mutation rate was 2.80% (21/750) in non-small cell lung cancer, including p.R623K (2 patients), p.N378S (1 patient), p.G187W (1 patient), p.V117I (1 patient), c.1721-1G>T (1 patient), p.R818* (1 patient), p.T829R (1 patient), p.Q753H (1 patient), p.L542M (1 patient), p.I68M (1 patient), p.Q814E (1 patient), p.K448N (1 patient), p.C617F (1 patient), p.Q600H (1 patient), p.G479* (1 patient), p.L155Q (1 patient), p.P572A (1 patient), p.L16V (1 patient), p.F652Y (1 patient), and p.T671S plus p.N228K (1 patient), and median overall survival (OS) for these patients was 15.0 months. Among them, all patients were INPP4B gene with co-occurring mutations. Briefly, patients with (n=2) or without (n=19) co-occurring EGFR mutations had a median OS of 20.0 months and 5.5 months respectively (P=0.01); patients with (n=17) or without (n=4) co-occurring TP53 mutations had a median OS of 15.0 months and 14.4 months respectively (P=0.68); patients with (n=7) or without (n=14) co-occurring PTPRD mutations had a median OS of not up to now and 15.0 months respectively (P=0.48); patients with (n=8) or without (n=13) co-occurring KRAS mutations had a median OS of 17.0 months and 15.0 months respectively (P=0.68).


      INPP4B mutations were observed in 2.80 % of cases of NSCLC. INPP4B-mutated NSCLC can exhibit other driver gene alterations. No clinical characteristics were significantly associated with INPP4B mutation.