2001
Rapid, Efficient Genotyping of Clinical Tumor Samples by Laser-Capture Microdissection/PCR/SSCP
Dillon D, Zheng K, Costa J. Rapid, Efficient Genotyping of Clinical Tumor Samples by Laser-Capture Microdissection/PCR/SSCP. Experimental And Molecular Pathology 2001, 70: 195-200. PMID: 11417998, DOI: 10.1006/exmp.2001.2362.Peer-Reviewed Original ResearchConceptsLaser capture microdissectionP53 exons 5PCR/SSCPTumor genotypingPure tumor cell populationsSSCP/sequencingSurgical pathology reportsRoutine clinical useClinical tumor samplesExon 5Colorectal adenocarcinomaTherapeutic responsePathology reportsTumor cell populationLaser-microdissected samplesClinical practiceTumor samplesClinical useSporadic mutationsExon 1Molecular analysisCell populationsDirect sequencingMutation analysisPCR productsDetection 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
2000
The utility of Ki-ras mutation analysis in the cytologic diagnosis of pancreatobiliary neoplasma.
Dillon DA, Johnson CC, Topazian MD, Tallini G, Rimm DL, Costa JC. The utility of Ki-ras mutation analysis in the cytologic diagnosis of pancreatobiliary neoplasma. The Cancer Journal 2000, 6: 294-301. PMID: 11079168.Peer-Reviewed Original ResearchConceptsFine needle aspiratesBile duct brushingsCytologic diagnosisPositive predictive valueCommon bile duct brushingsDuct brushingsPancreatobiliary carcinomaPredictive valueMutation patternsBiliary tract carcinomaPrevious retrospective studyAvailable clinical informationConsecutive clinical specimensDefinitive cytologic diagnosisPolymerase chain reaction/single-strand conformation polymorphism analysisRoutine cytologic diagnosisPositive cytologyRetrospective studySuspicious morphologyCytologic evaluationSuspicious cytologyPancreatobiliary tractClinical informationMorphologic diagnosisNeoplastic cells
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
Highly Sensitive Nonradioactive Single-strand Conformational Polymorphism
Emanuel J, Damico C, Ahn S, Bautista D, Costa J. Highly Sensitive Nonradioactive Single-strand Conformational Polymorphism. Applied Immunohistochemistry & Molecular Morphology 1996, 5: 260-264. PMID: 8955617, DOI: 10.1097/00019606-199612000-00006.Peer-Reviewed Original ResearchIdentification of mutations in the Ki-ras gene in human retinoblastoma.
Bautista D, Emanuel J, Granville C, Howard R, Costa J. Identification of mutations in the Ki-ras gene in human retinoblastoma. Investigative Ophthalmology & Visual Science 1996, 37: 2313-7. PMID: 8843915.Peer-Reviewed Original ResearchConceptsKi-ras geneKi-rasIdentification of mutationsSelective growth advantageGenomic sequencesSingle-strand conformation polymorphismGrowth advantageTumor cell populationGenesExon 1Ki-ras mutationsMutationsExon 2Cell populationsConformation polymorphismHuman retinoblastomaClonal mutationsDirect sequencingPolymerase chain reactionTumor samplesLight microscopyMutational statusChain reactionRetinoblastomaOncogeneDetection 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
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
1991
Occurrence of Ki-ras and p53 mutations in primary colorectal tumors.
Shaw P, Tardy S, Benito E, Obrador A, Costa J. Occurrence of Ki-ras and p53 mutations in primary colorectal tumors. Oncogene 1991, 6: 2121-8. PMID: 1945416.Peer-Reviewed Original Research