title: Combined detection of p53, p16, Rb, and EGFR mutations in lung cancer by suspension microarray.
abstract: Mutations of some contributing factors (p53, p16, Rb, and EGFR) are believed to affect diagnosis and drug resistance of lung cancer. We evaluated the efficacy of a multimarker panel for molecular diagnosis of lung cancer, using a high-throughput suspension microarray. One hundred and twenty-five lung cancer specimens and 30 tumor-free lung tissue samples were assayed by multiplex polymerase chain reaction with specific probes designed to detect hot-spot mutations in p53, p16, Rb, and EGFR. The mutation rates of p53, p16, Rb, or EGFR in the lung cancer specimens were 36.8, 15.2, 11.2, and 18.4%, respectively. Inclusion of four markers elevated sensitivity to 68.0%. The specificity and accuracy of four-marker detection were 90.0 and 72.3%, and the mutation rates of this panel in stage I, stage II and stage III disease were 62.2, 65.9 and 75.0%, respectively. Mutation at p16 occurred more frequently in non-small cell lung cancer (19.3%) than in small cell lung cancer (5.4%); while the mutation rate of Rb was 32.4% in small cell lung cancer versus 2.3% in non-small cell lung cancer. We conclude that simultaneous detection of p53, Rb, p16, and EGFR in a suspension microarray facilitates rapid diagnosis of lung cancer.
authors.affiliation: Cancer Center of People's Liberation Army, Nanjing, PR, China.
authors.forename: Y
authors.initials: Y
authors.lastname: Ye
authors.forename: D
authors.initials: D
authors.lastname: Wang
authors.forename: C
authors.initials: C
authors.lastname: Su
authors.forename: T
authors.initials: T
authors.lastname: Rong
authors.forename: A
authors.initials: A
authors.lastname: Guo
mesh_terms: D001483:Base Sequence; D014408:Biomarkers, Tumor / Q000235:genetics; D002289:Carcinoma, Non-Small-Cell Lung / Q000175:diagnosis / Q000235:genetics*; D018288:Carcinoma, Small Cell / Q000175:diagnosis / Q000235:genetics*; D017931:DNA Primers; D066246:ErbB Receptors / Q000235:genetics*; D019942:Genes, p16; D006801:Humans; D008175:Lung Neoplasms / Q000175:diagnosis / Q000235:genetics*; D020411:Oligonucleotide Array Sequence Analysis; D016160:Retinoblastoma Protein / Q000235:genetics*; D016159:Tumor Suppressor Protein p53 / Q000235:genetics*
chemical_list: D014408:Biomarkers, Tumor; D017931:DNA Primers; D016160:Retinoblastoma Protein; D016159:Tumor Suppressor Protein p53; D066246:ErbB Receptors