Urinary N1, N12-diacetylspermine is a non-invasive marker for the diagnosis and prognosis of non-small-cell lung cancer

Yusuke Takahashi, Koji Sakaguchi, Hirotoshi Horio, Kyoko Hiramatsu, Shunsuke Moriya, Keiichi Takahashi, Masao Kawakita

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)


Background:Early detection of non-small-cell lung cancer (NSCLC) and accurate prognostic risk assessment could improve patient outcome. We examined the significance of urinary N 1, N 12 -diacetylspermine (DiAcSpm) in the detection and prognostic stratification of NSCLC patients.Methods:A DiAcSpm/cutoff ratio (DASr) was established for 260 NSCLC patients, 99 benign lung disease patients, and 140 healthy volunteers, using colloidal gold aggregation methods. The DASr was compared between patients and healthy controls, and the prognostic significance of DASr was examined.Results:The median urinary DASr of NSCLC patients was significantly higher than that of healthy controls (0.810 vs 0.534, P<0.001). The DASr was higher in squamous cell carcinoma (SqCC) patients than in adenocarcinoma patients (1.18 vs 0.756, respectively, P=0.039). An increased urinary DASr value was significantly associated with pathological stage, other histological invasive factors and unfavourable outcomes in patients with completely resected NSCLC. Multivariate Cox regression analysis showed that increased urinary DASr was an independent prognostic factor (hazard ratio=4.652, 95% confidence interval (CI), 2.092-10.35; P<0.001).Conclusions:Urinary DASr was significantly increased in NSCLC, especially in SqCC. Urinary DASr was an independent poor prognostic indicator in patients with completely resected NSCLC. The DASr could be a useful biomarker for detecting malignancies and predicting prognosis.

Original languageEnglish
Pages (from-to)1493-1501
Number of pages9
JournalBritish Journal of Cancer
Issue number10
Publication statusPublished - 2015 Nov 17
Externally publishedYes


  • non-small-cell lung cancer
  • prognostic indicator
  • tumour marker
  • urine diacetylspermine

ASJC Scopus subject areas

  • Oncology
  • Cancer Research


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