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- Title
Clinical Significance of Tyrosine Hydroxylase mRNA Transcripts in Peripheral Blood at Diagnosis in Patients with Neuroblastoma.
- Authors
Na Hee Lee; Meong Hi Son; Young Bae Choi; Eunsang Yi; Ji Won Lee; Keon Hee Yoo; Ki Woong Sung; Hong Hoe Koo
- Abstract
Purpose: The purpose of this study is to investigate the clinical significance of tyrosine hydroxylase (TH) expression in peripheral blood (PB) at diagnosis in patients with neuroblastoma. Materials and Methods: TH mRNA expression in PB was measured by reverse transcription quantitative real-time polymerase chain reaction in 210 patients who were newly diagnosed with neuroblastoma from July 2005 to June 2015 and the clinical significance of THexpression in PB at diagnosis was evaluated. Results: TH expression was positive in 60 patients (28.6%). Fifty of 60 TH-positive patients had metastatic tumors and the remaining 10 had localized tumors. TH expression was associated with high-risk features (i.e., advanced stage, older age, unfavorable pathology, and MYCN amplification) at diagnosis. Among TH-positive patients, higher TH expression level was observed in high-risk patients than in low- or intermediate-risk patients (p=0.035). The probability of 5-year progression-free survival (PFS) was lower in TH-positive patients than in TH-negative patients (63.8±6.9% vs. 94.7±2.1%, p < 0.001). In analysis confined to high-risk patients, the 5-year probability of PFS remained lower in TH-positive patients (55.7±8.2% vs. 89.6±5.8%, p < 0.001). Among TH-positive patients, a higher expression level of TH was associated with a worse outcome. In multivariate analyses, positive TH expression in PB at diagnosis was an independent poor prognostic factor for PFS. Conclusion: The treatment intensity should be tailored according to TH expression in PB at diagnosis.
- Subjects
NEUROBLASTOMA; TYROSINE hydroxylase; MESSENGER RNA; BLOOD testing; GENE expression; PROGRESSION-free survival; REVERSE transcriptase polymerase chain reaction; DIAGNOSIS
- Publication
Cancer Research & Treatment, 2016, Vol 48, Issue 4, p1399
- ISSN
1598-2998
- Publication type
Article
- DOI
10.4143/crt.2015.481