Association of BIM Deletion Polymorphism and BIM-γ RNA Expression in NSCLC with EGFR Mutation.

Abstract:

AIM:This pilot study assessed the association of BIM deletion polymorphism and BIM RNA isoform in patients with EGFR-positive non-small cell lung cancer (NSCLC). PATIENTS AND METHODS:The study included 33 patients with EGFR-positive NSCLC treated with gefitinib. BIM deletion polymorphism and BIM RNA isoform (EL/L/S/γ) were determined by polymerase chain reaction (PCR). RESULTS:BIM-γ expression was significantly higher in patients with BIM deletion polymorphism than among those without BIM deletion polymorphism inside tumors (p=0.038) and around tumors (p=0.0024). Relative BIM-γ expression was significantly higher in patients with BIM deletion polymorphism than among those without BIM deletion polymorphism (p=0.0017). Patients with BIM-γ had significantly shorter progression-free survival than those without BIM-γ (median: 304 vs. 732 days; p=0.023). CONCLUSION:Expression of BIM-γ mRNA and BIM deletion polymorphism were strongly associated. BIM-γ overexpression may have a role in apoptosis related to EGFR-tyrosine kinase inhibitor.

authors

Isobe K,Kakimoto A,Mikami T,Kaburaki K,Kobayashi H,Yoshizawa T,Makino T,Otsuka H,Sano GO,Sugino K,Sakamoto S,Takai Y,Tochigi N,Iyoda A,Homma S

doi

10.21873/cgp.20010

subject

Has Abstract

pub_date

2016-01-01 00:00:00

pages

475-482

issue

6

eissn

1109-6535

issn

1790-6245

pii

13/6/475

journal_volume

13

pub_type

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