title: Expression of the chemokine receptor CCR6 correlates with a favorable prognosis in patients with adenocarcinoma of the lung.
abstract: The relation between CCR6 expression and the clinicopathological characteristics of lung cancer and patient prognosis is not well understood and remains controversial. We, therefore, investigated the relationship between CCR6 expression and prognosis in patients with adenocarcinoma of the lung. We used semiquantitative real-time reverse transcription polymerase chain reaction to assess the expression of CCR6 mRNA in tumor samples from 84 patients with adenocarcinoma of the lung. We then correlated the levels of CCR6 mRNA with known clinicopathological features. The 5-year disease-free survival rate among patients expressing higher levels of CCR6 mRNA was significantly better than among those expressing lower levels (P = 0.009 by log-rank test). Multivariate Cox proportional hazard analyses revealed, being male [hazard ratio, 3.94; 95% confidence interval (CI), 1.58 to 10.36; P = 0.003], tumor size >30 mm (hazard ratio, 2.46; 95% CI, 1.08 to 5.73; P = 0.030), nodal metastasis (hazard ratio, 7.66; 95% CI, 2.62 to 23.3; P = 0.0002), and CCR6 (hazard ratio, 0.34; 95% CI, 0.11 to 0.93; P = 0.034) to be independent factors affecting the 5-year disease-free survival rate. Greater expression of CCR6 by tumor cells is an independent predictor of a better prognosis in patients with adenocarcinoma of the lung.
authors.affiliation: Department of Chest, Breast and Endoclinologic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita City 010-8543, Japan. minamiya@med.akita-u.ac.jp
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Minamiya
authors.forename: Hajime
authors.initials: H
authors.lastname: Saito
authors.forename: Naoko
authors.initials: N
authors.lastname: Takahashi
authors.forename: Manabu
authors.initials: M
authors.lastname: Ito
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Toda
authors.forename: Takashi
authors.initials: T
authors.lastname: Ono
authors.forename: Hayato
authors.initials: H
authors.lastname: Konno
authors.forename: Satoru
authors.initials: S
authors.lastname: Motoyama
authors.forename: Jun-Ichi
authors.initials: J
authors.lastname: Ogawa
mesh_terms: D000230:Adenocarcinoma / Q000235:genetics / Q000378:metabolism / Q000556:secondary; D000077192:Adenocarcinoma of Lung; D014408:Biomarkers, Tumor / Q000235:genetics* / Q000378:metabolism; D005260:Female; D006801:Humans; D007124:Immunoenzyme Techniques; D008175:Lung Neoplasms / Q000235:genetics* / Q000378:metabolism / Q000473:pathology / Q000556:secondary; D008207:Lymphatic Metastasis; D008297:Male; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local / Q000235:genetics* / Q000378:metabolism / Q000473:pathology; D009367:Neoplasm Staging; D011379:Prognosis; D012333:RNA, Messenger / Q000235:genetics*; D054399:Receptors, CCR6 / Q000235:genetics* / Q000378:metabolism; D020133:Reverse Transcriptase Polymerase Chain Reaction; D015996:Survival Rate
chemical_list: D014408:Biomarkers, Tumor; C106311:CCR6 protein, human; D012333:RNA, Messenger; D054399:Receptors, CCR6