Different assessments of immunohistochemically stained Ki-67 and hTERT in glioblastoma multiforme yield variable results: a study with reference to survival prognosis.

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Bibtex

@article{648c8bc267d8432a8f8acb3aae5da41b,
title = "Different assessments of immunohistochemically stained Ki-67 and hTERT in glioblastoma multiforme yield variable results: a study with reference to survival prognosis.",
abstract = "OBJECTIVE: To investigate a marker of tumor proliferation, Ki-67, and telomerase expression in glioblastoma multiforme and to compare the results of different mainly quantitative assessments, in relation to age and survival rates. METHODS: Immunohistochemical stainings of Ki-67 and hTERT were evaluated in 39 formaldehyde-fixed, paraffin-embedded surgical samples of glioblastoma multiforme diagnosed during 2004, comprising all specimens with sufficient amount of vital tissue sent to the Department of Pathology during this year. Ki-67 counting and hTERT evaluation was assessed on whole tumor sections and on selected areas within each section. Age and length of survival were analyzed in relation to these parameters. RESULTS: We found that different methods of evaluating the stained sections yielded different results regarding Ki-67, but less marked differences for hTERT. With Ki-67 counting on whole sections (non-selected areas), we found a statistically significant correlation with length of survival. There was no corresponding information in the hTERT assessment. We could also confirm a significant inverse correlation between age and length of survival, as previously published. CONCLUSION: Our data demonstrate that different methods of Ki-67 evaluation may give markedly dissimilar results. The significant correlation found between survival and one but not with two other methods of Ki-67 assessment, implicate the value of standardized quantification methods. Our data indicate a possible prognostic use of immunohistochemical Ki-67 proliferation index in glioblastoma multiforme.",
keywords = "Ki-67 Antigen: biosynthesis, Glioblastoma: pathology, Glioblastoma: mortality, Glioblastoma: metabolism, Brain Neoplasms: pathology, Brain Neoplasms: metabolism, Brain Neoplasms: mortality, Telomerase: biosynthesis, Tumor Markers, Biological: analysis",
author = "Annette Persson and Elisabet Englund",
note = "The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Pathology, (Lund) (013030000)",
year = "2008",
language = "English",
volume = "27",
pages = "224--233",
journal = "Clinical Neuropathology",
issn = "0722-5091",
publisher = "Dustri-Verlag",
number = "4",

}