title: Polymorphisms in MicroRNAs are associated with survival in non-small cell lung cancer.
abstract: BACKGROUND
  MicroRNAs (miRNA) play important roles in the regulation of eukaryotic gene expression and are involved in human carcinogenesis. Single-nucleotide polymorphisms (SNP) in miRNA sequence may alter miRNA functions in gene regulation, which, in turn, may affect cancer risk and disease progression.
  
  
  METHODS
  We conducted an analysis of associations of 142 miRNA SNPs with non-small cell lung cancer (NSCLC) survival using data from a genome-wide association study (GWAS) in a Caucasian population from the Massachusetts General Hospital (Boston, MA) including 452 early-stage and 526 late-stage NSCLC cases. Replication analyses were further performed in two external populations, one Caucasian cohort from The University of Texas MD Anderson Cancer Center (Houston, TX) and one Han Chinese cohort from Nanjing, China.
  
  
  RESULTS
  We identified seven significant SNPs in the discovery set. Results from the independent Caucasian cohort demonstrated that the C allele of rs2042253 (hsa-miRNA-5197) was significantly associated with decreased risk for death among the patients with late-stage NSCLC (discovery set: HR, 0.80; P = 0.007; validation set: HR, 0.86; P = 0.035; combined analysis: HR, 0.87; P = 0.007).
  
  
  CONCLUSIONS
  These findings provide evidence that some miRNA SNPs are associated with NSCLC survival and can be used as predictive biomarkers.
  
  
  CONCLUSIONS
  This study provided an estimate of outcome probability for survival experience of patients with NSCLC, which demonstrates that genetic factors, as well as classic nongenetic factors, may be used to predict individual outcome.
authors.affiliation: Nanjing Medical University, Nanjing, China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Zhao
authors.affiliation: Duke Cancer Institute, Duke University, Durham, North Carolina.
authors.forename: Qingyi
authors.initials: Q
authors.lastname: Wei
authors.affiliation: Nanjing Medical University, Nanjing, China.
authors.forename: Lingming
authors.initials: L
authors.lastname: Hu
authors.affiliation: Nanjing Medical University, Nanjing, China.
authors.forename: Feng
authors.initials: F
authors.lastname: Chen
authors.affiliation: Nanjing Medical University, Nanjing, China.
authors.forename: Zhibin
authors.initials: Z
authors.lastname: Hu
authors.affiliation: Massachusetts General Hospital, Boston, Massachusetts.
authors.forename: Rebecca S
authors.initials: RS
authors.lastname: Heist
authors.affiliation: Harvard School of Public Health, Boston, Massachusetts.
authors.forename: Li
authors.initials: L
authors.lastname: Su
authors.affiliation: Geisel School of Medicine, Dartmouth College, Lebanon, New Hampshire.
authors.forename: Christopher I
authors.initials: CI
authors.lastname: Amos
authors.affiliation: Nanjing Medical University, Nanjing, China.
authors.forename: Hongbing
authors.initials: H
authors.lastname: Shen
authors.affiliation: Nanjing Medical University, Nanjing, China. Massachusetts General Hospital, Boston, Massachusetts. Harvard School of Public Health, Boston, Massachusetts. dchris@hsph.harvard.edu.
authors.forename: David C
authors.initials: DC
authors.lastname: Christiani
mesh_terms: D000368:Aged; D002289:Carcinoma, Non-Small-Cell Lung / Q000235:genetics* / Q000401:mortality; D005260:Female; D055106:Genome-Wide Association Study; D006801:Humans; D008175:Lung Neoplasms / Q000235:genetics* / Q000401:mortality; D008297:Male; D035683:MicroRNAs / Q000235:genetics*; D011110:Polymorphism, Genetic; D020641:Polymorphism, Single Nucleotide; D011379:Prognosis
chemical_list: D035683:MicroRNAs
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