PMID- 24854539 OWN - NLM STAT- MEDLINE DCOM- 20150602 LR - 20220318 IS - 1437-4315 (Electronic) IS - 1431-6730 (Linking) VI - 395 IP - 9 DP - 2014 Sep TI - Low mRNA expression levels of kallikrein-related peptidase 4 (KLK4) predict short-term relapse in patients with laryngeal squamous cell carcinoma. PG - 1051-62 LID - 10.1515/hsz-2014-0139 [doi] AB - Several members of the family of tissue kallikrein and kallikrein-related peptidases have been suggested as promising tumor biomarkers with important prognostic significance. However, only one (KLK11) has already been studied in laryngeal squamous cell carcinoma (LSCC) as a potential biomarker for LSCC diagnosis and/or prognosis. Our study investigated the prognostic value of kallikrein-related peptidase-4 (KLK4) mRNA expression as a molecular tissue biomarker in LSCC. For this purpose, KLK4 mRNA expression analysis was performed in 116 cancerous and 74 paired non-cancerous laryngeal tissue specimens obtained from patients that had undergone surgical treatment for primary LSCC. A remarkable downregulation of KLK4 mRNA expression was discovered in laryngeal tumors, compared to non-cancerous laryngeal tissue specimens. KLK4 mRNA expression was also shown to distinguish LSCC from non-cancerous laryngeal tissues. Furthermore, low KLK4 mRNA expression was shown to predict poor disease-free survival, independently of the histological grade and size of the malignant tumor as well as patient TNM stage. According to Kaplan-Meier survival analysis, low KLK4 mRNA expression predicts short-term relapse even among patients with well-differentiated tumors or those at an early TNM stage. Thus, KLK4 mRNA positivity could be regarded as a novel independent indicator of favorable prognosis for the disease-free survival of LSCC patients. FAU - Foteinou, Emmanouela AU - Foteinou E FAU - Kontos, Christos K AU - Kontos CK FAU - Giotakis, Aris I AU - Giotakis AI FAU - Scorilas, Andreas AU - Scorilas A LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Germany TA - Biol Chem JT - Biological chemistry JID - 9700112 RN - 0 (RNA, Messenger) RN - EC 3.4.21.- (Kallikreins) RN - EC 3.4.21.- (kallikrein 4) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Carcinoma, Squamous Cell/*genetics/pathology MH - Cell Line, Tumor MH - Disease-Free Survival MH - Down-Regulation/genetics MH - Gene Expression Regulation, Neoplastic MH - Humans MH - Kallikreins/*genetics/metabolism MH - Kaplan-Meier Estimate MH - Laryngeal Neoplasms/*genetics/pathology MH - Larynx/metabolism/pathology MH - Middle Aged MH - Neoplasm Grading MH - Neoplasm Recurrence, Local/*genetics/pathology MH - Neoplasm Staging MH - Prognosis MH - RNA, Messenger/genetics/metabolism MH - ROC Curve EDAT- 2014/05/24 06:00 MHDA- 2015/06/03 06:00 CRDT- 2014/05/24 06:00 PHST- 2014/02/15 00:00 [received] PHST- 2014/04/08 00:00 [accepted] PHST- 2014/05/24 06:00 [entrez] PHST- 2014/05/24 06:00 [pubmed] PHST- 2015/06/03 06:00 [medline] AID - /j/bchm.just-accepted/hsz-2014-0139/hsz-2014-0139.xml [pii] AID - 10.1515/hsz-2014-0139 [doi] PST - ppublish SO - Biol Chem. 2014 Sep;395(9):1051-62. doi: 10.1515/hsz-2014-0139.