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Clinical significance of plasma urothelial carcinoma associated 1 (UCA1) in patients with colorectal cancer (CRC) remains unclear. This study investigated the usefulness of plasma UCA1 as a biomarker in patients with CRC. UCA1 levels were measured in the plasma and tissue from patients with CRC by quantitative polymerase chain reaction. Relationships between plasma UCA1 and clinicopathological features were examined. Plasma UCA1 levels were significantly lower in patients with CRC than in healthy volunteers. UCA1 expression in B-Raf proto-oncogene serine/threonine kinase (BRAF)-mutant CRC tissue was also lower than that in non-cancerous tissue, although it was higher in CRC with wild-type BRAF. In right-sided CRC, a lower plasma UCA1 level was associated with pT4 and BRAF mutation. In contrast, in left-sided CRC, higher plasma UCA1 was associated with pT4 and pStage 3b-4. Plasma UCA1 is a useful biomarker for CRC detection and predicting clinicopathological features, particularly BRAF mutation.


Tomohito Maeda, Hirotaka Konishi, Wataru Takaki, Kazuya Takabatake, Daiki Matsubara, Katsutoshi Shoda, Tomohiro Arita, Hiroki Shimizu, Shuhei Komatsu, Atsushi Shiozaki, Yoshiaki Kuriu, Eigo Otsuji. Significance of Plasma UCA1 for Predicting Colorectal Cancer and BRAF Mutation Status. Anticancer research. 2021 Apr;41(4):1761-1769

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PMID: 33813380

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