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- W1955762920 endingPage "1924" @default.
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- W1955762920 abstract "Neuroblastoma is the most common extracranial malignant solid tumor in children under 5 years and is characterized by a wide clinical and biological heterogeneity, from spontaneously regressive forms to cancers with a rapid and fatal progression. MYCN oncogene amplification is considered the most important prognostic factor to evaluate survival and therapeutic choices in these patients.Here we present a new assay for rapid and accurate measurement of MYCN amplification, based on real-time quantitative PCR with the TaqMan(TM) reaction. The degree of MYCN amplification was derived from the ratio of the MYCN oncogene and the single-copy reference gene, beta-actin. The absolute abundance of these two genes in tumor sample DNA was obtained by extrapolation on external calibration curves generated with reference DNA.We found a variable degree of MYCN amplification, from 2 to 29, in 26 of 49 (53%) neuroblastomas. These results were well correlated to those obtained with a competitive PCR assay in the same samples (r = 0. 987). MYCN amplification was associated mainly with advanced cancer stages, and the analysis of overall survival confirmed that the measurement of MYCN amplification is a predictor of patient outcome in neuroblastoma. Patients without MYCN amplification had a cumulative survival significantly higher than patients with low (<9; P = 0.02) and high (>/=9; P = 0.03) oncogene amplification.The assay is rapid and reproducible and does not require any post-PCR analytical procedure." @default.
- W1955762920 created "2016-06-24" @default.
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- W1955762920 date "1999-11-01" @default.
- W1955762920 modified "2023-09-24" @default.
- W1955762920 title "Real-Time Quantitative PCR for the Measurement of MYCN Amplification in Human Neuroblastoma with the TaqMan Detection System" @default.
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- W1955762920 doi "https://doi.org/10.1093/clinchem/45.11.1918" @default.
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