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Wnt-1 inducible signaling pathway protein-2 (WISP-2) is a member of the CCN family, which is critical for the control of cell morphology, motion, adhesion and other processes involved in tumorigenesis. The expression pattern and clinical significance of WISP-2 in astrocytomas remains unclear. In this study, reverse transcription-polymerase chain reaction was performed to systematically investigate the expression of WISP-2 in 47 astrocytoma tissues of different pathological grades and 10 normal brain tissues. The mRNA expression levels of WISP-2 in the astrocytoma tissues were observed to be significantly higher than those in the normal brain tissues. Furthermore, the upregulation of WISP-2 was found to be associated with astrocytomas of higher pathological grades. Subsequently, 154 astrocytoma and 15 normal brain tissues were analyzed using immunohistochemistry and similar results were obtained. Univariate and multivariate survival analyses were used to determine the correlations between WISP-2 expression and overall survival (OS) and progression-free survival (PFS). The results indicated that the expression of WISP-2 was found to negatively correlate with patient PFS and OS. These results demonstrated that the WISP-2 protein is involved in the pathogenesis and progression of human astrocytomas and may serve as a malignant biomarker of this disease. [ABSTRACT FROM AUTHOR]

The authors have considered the queries raised by the reader, and acknowledge that there were errors featured in the text of the paper and in the two Tables that are in need of correction; therefore, they wish to publish a corrigendum to rectify these issues. Oncol Lett 9: 235-240, 2015; DOI: 10.3892/ol.2014.2663 Subsequently to the publication of the above paper, an interested reader brought to the readers' attention that some statements and primer sequences in the paper had apparently been presented incorrectly. Finally, the primer sequences for human WISP-2 cDNA were reported incorrectly on p. 236; these should have been written as follows: Forward primer, 5'-TTTCTGGCCTTGTCTCTTCC-3' and reverse primer, 5'-GCACAGGCGGCGCTGGGTCTC-3'. [Extracted from the article]