2001
Detection of the Mutated K-Ras Biomarker in Colorectal Carcinoma
Doolittle B, Emanuel J, Tuttle C, Costa J. Detection of the Mutated K-Ras Biomarker in Colorectal Carcinoma. Experimental And Molecular Pathology 2001, 70: 289-301. PMID: 11418008, DOI: 10.1006/exmp.2001.2364.Peer-Reviewed Original ResearchMeSH KeywordsBiomarkers, TumorColorectal NeoplasmsDeoxyribonuclease EcoRIDNADNA, NeoplasmFecesGenes, rasHumansIndicators and ReagentsMutationPolymerase Chain ReactionPolymorphism, Single-Stranded ConformationalQuaternary Ammonium CompoundsReference ValuesReproducibility of ResultsSite-Specific DNA-Methyltransferase (Adenine-Specific)Trimethyl Ammonium CompoundsConceptsColorectal carcinomaStool samplesHealthy patientsK-rasReliable screening testDouble-blind formatK-ras mutationsWild-type K-rasK-ras oncogeneK-ras sequencesCommon malignancyCRC tumorsPolymerase chain reactionEarly lesionsStool DNANoninvasive screenScreening testTumor tissueGenetic biomarkersHuman stoolPatientsEarly detectionHigh false positive rateSingle-strand conformation polymorphismTissue DNA
1999
Analysis of K-ras, N-ras, H-ras, and p53 in Lung Neuroendocrine Neoplasms
Couce M, Bautista D, Costa J, Carter D. Analysis of K-ras, N-ras, H-ras, and p53 in Lung Neuroendocrine Neoplasms. Applied Immunohistochemistry & Molecular Morphology 1999, 8: 71-79. PMID: 10475381, DOI: 10.1097/00019606-199906000-00003.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedAllelesDNA Mutational AnalysisExonsFemaleGenes, rasHumansImmunohistochemistryLung NeoplasmsMaleMiddle AgedMutation, MissenseNeuroendocrine TumorsPoint MutationPolymerase Chain ReactionPolymorphism, GeneticPolymorphism, Single-Stranded ConformationalRetrospective StudiesTumor Suppressor Protein p53ConceptsLarge cell neuroendocrine carcinomaPulmonary neuroendocrine tumorsAtypical carcinoidNeuroendocrine tumorsTypical carcinoidP53 geneK-rasCell neuroendocrine carcinomaSingle-strand conformation polymorphismHigh-grade tumorsHigh-grade carcinomaH-ras mutationsLung neuroendocrine neoplasmsN-rasK-ras mutationsH-RasExon 5Neuroendocrine carcinomaPolymerase chain reactionNeuroendocrine neoplasmsPositive immunostainingGenotypic mutationsN-ras geneTumors
1996
Detection of rare circulating human colon tumor cells in a nude mouse xenograft model
Pages J, Sordat B, Bautista D, Costa J, Benhattar J. Detection of rare circulating human colon tumor cells in a nude mouse xenograft model. Cancer Letters 1996, 106: 139-144. PMID: 8827058, DOI: 10.1016/0304-3835(96)04319-4.Peer-Reviewed Original ResearchConceptsHuman colon tumor cellsTumor cellsColon tumor cellsSensitive allele-specific polymerase chain reactionExperimental modelNude mouse xenograft modelK-ras mutationsMouse xenograft modelAllele-specific polymerase chain reactionK-ras geneLymph nodesPrimary implantationSpecific polymerase chain reactionHuman colon carcinoma cellsMicrometastatic depositsPolymerase chain reactionColon carcinoma cellsXenograft modelNude miceGAT mutationMetastatic processCarcinoma cellsBloodChain reactionOccurrence of cells
1994
K-ras mutations and p53 alterations in neoplastic and nonneoplastic lesions associated with longstanding ulcerative colitis.
Chaubert P, Benhattar J, Saraga E, Costa J. K-ras mutations and p53 alterations in neoplastic and nonneoplastic lesions associated with longstanding ulcerative colitis. American Journal Of Pathology 1994, 144: 767-75. PMID: 8160776, PMCID: PMC1887244.Peer-Reviewed Original ResearchConceptsK-ras mutationsLongstanding ulcerative colitisUlcerative colitisP53 alterationsActive colitisDysplastic lesionsK-rasGenetic alterationsP53 gene alterationsP53 genetic alterationsCombination of immunohistochemistryK-ras geneNonneoplastic lesionsColorectal carcinomaInvasive carcinomaColonic carcinomaDysplastic mucosaEpithelial lesionsInvasive tumorsColitisSame patientCarcinomaSporadic carcinomasLesionsNontumor samples
1993
Prognostic significance of K-ras mutations in colorectal carcinoma
Benhattar J, Losi L, Chaubert P, Givel J, Costa J. Prognostic significance of K-ras mutations in colorectal carcinoma. Gastroenterology 1993, 104: 1044-1048. PMID: 8462792, DOI: 10.1016/0016-5085(93)90272-e.Peer-Reviewed Original ResearchConceptsK-ras mutationsPrognostic significanceColorectal carcinomaK-ras geneRecurrent diseaseCodon 12Good prognostic factorAdvanced colorectal carcinomaPossible prognostic significanceHuman colorectal carcinomaPolymerase chain reaction-based techniquesDukes' BPrognostic factorsColorectal cancerPrimary tumorOverall prevalenceHigh riskPatientsRas mutationsCarcinomaHuman tumorsTumorsDiseasePrevalenceGGT
1992
Stability of K-ras mutations throughout the natural history of human colorectal cancer
Losi L, Benhattar J, Costa J. Stability of K-ras mutations throughout the natural history of human colorectal cancer. European Journal Of Cancer 1992, 28: 1115-1120. PMID: 1627381, DOI: 10.1016/0959-8049(92)90468-h.Peer-Reviewed Original ResearchConceptsK-ras mutationsPrimary tumorRas mutationsNatural historyColorectal cancerTumor markersStable tumor markerHuman colorectal cancerDistant recurrenceRecurrent cancerRecurrent tumorsPolymerase chain reactionColorectal carcinomaCodon 12TumorsArchival tissueCancerChain reactionAllele-specific amplificationPatientsRecurrenceMarkersMutationsCarcinomaDisease