2018
Tumor Microvessel Density as a Prognostic Marker in High-Risk Renal Cell Carcinoma Patients Treated on ECOG-ACRIN E2805
Jilaveanu LB, Puligandla M, Weiss SA, Wang X, Zito C, Flaherty KT, Boeke M, Neumeister V, Camp RL, Adeniran A, Pins M, Manola J, DiPaola RS, Haas N, Kluger HM. Tumor Microvessel Density as a Prognostic Marker in High-Risk Renal Cell Carcinoma Patients Treated on ECOG-ACRIN E2805. Clinical Cancer Research 2018, 24: 217-223. PMID: 29066509, PMCID: PMC5904512, DOI: 10.1158/1078-0432.ccr-17-1555.Peer-Reviewed Original ResearchConceptsHigher microvessel densityDisease-free survivalRenal cell carcinomaHigh-risk RCC patientsImproved overall survivalOverall survivalMicrovessel densityRCC patientsAdjuvant therapy trialsClear cell histologyHigh-risk patientsBiomarkers of outcomeTumor microvessel densityLower microvessel densityAbsence of necrosisFuhrman grade 1Clin Cancer ResAdjuvant sunitinibProlonged OSCell histologyLymphovascular invasionSarcomatoid featuresMultivariable analysisTreatment armsEntire cohort
2015
Staphylococcal Purpura Fulminans
Honarpisheh H, Camp R, Lazova R. Staphylococcal Purpura Fulminans. American Journal Of Dermatopathology 2015, 37: 643-646. PMID: 25099358, DOI: 10.1097/dad.0000000000000175.Peer-Reviewed Original ResearchConceptsPurpura fulminansPerivascular lymphocytic inflammationProgressive hemodynamic instabilityStaphylococcal purpura fulminansSolitary lung metastasisSmall cutaneous vesselsMultiorgan failureHemodynamic instabilityLymphocytic inflammationLung metastasesRectal adenocarcinomaSubepidermal bullaeCase reportEpidermal necrosisGeneralized eruptionAutopsy examinationSkin biopsiesBlack maculeCutaneous vesselsDay 3FulminansS. aureusStaphylococcus aureusAureusReportCharacterization of tumor infiltrating lymphocytes in paired primary and metastatic renal cell carcinoma specimens
Baine MK, Turcu G, Zito CR, Adeniran AJ, Camp RL, Chen L, Kluger HM, Jilaveanu LB. Characterization of tumor infiltrating lymphocytes in paired primary and metastatic renal cell carcinoma specimens. Oncotarget 2015, 6: 24990-25002. PMID: 26317902, PMCID: PMC4694809, DOI: 10.18632/oncotarget.4572.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAgedB7-H1 AntigenCarcinoma, Renal CellCD4-Positive T-LymphocytesCD8-Positive T-LymphocytesFemaleFluorescent Antibody TechniqueForkhead Transcription FactorsHumansKidney NeoplasmsLymphocytes, Tumor-InfiltratingMaleMiddle AgedNeoplasm MetastasisTissue Array AnalysisYoung AdultConceptsRenal cell carcinomaT cell ratioMetastatic specimensPD-L1Cell carcinomaPD-1/PD-L1 blockadePD-1/PD-L1 statusPD-1/PD-L1 pathwayMetastatic renal cell carcinomaHigh PD-L1PD-L1 blockadeUnfavorable tumor characteristicsPD-L1 expressionPD-L1 statusPD-L1 pathwayT-cell contentPre-treatment tumorsLow CD8TIL subsetsCharacterization of tumorsTIL densitySuch patientsTumor characteristicsImmune activationPatient survival
2013
Vascularity of primary and metastatic renal cell carcinoma specimens
Aziz SA, Sznol J, Adeniran A, Colberg JW, Camp RL, Kluger HM. Vascularity of primary and metastatic renal cell carcinoma specimens. Journal Of Translational Medicine 2013, 11: 15. PMID: 23316728, PMCID: PMC3561185, DOI: 10.1186/1479-5876-11-15.Peer-Reviewed Original ResearchConceptsRenal cell carcinomaMicrovessel areaMetastatic samplesCell carcinomaMetastatic sitesPrimary tumorMetastatic renal cell carcinomaRenal cell carcinoma tumorsClear cell tumorsClear cell carcinomaPredictive biomarker studiesAnti-angiogenic drugsAnti-angiogenic therapyTypes of tumorsHigh response ratePrimary nephrectomyHistologic subtypeCell tumorsDifferent histologyPapillary histologyCD 34Variable histologyClinical studiesClear cellsTumor vascularity
2012
c-Met is a prognostic marker and potential therapeutic target in clear cell renal cell carcinoma
Gibney GT, Aziz SA, Camp RL, Conrad P, Schwartz BE, Chen CR, Kelly WK, Kluger HM. c-Met is a prognostic marker and potential therapeutic target in clear cell renal cell carcinoma. Annals Of Oncology 2012, 24: 343-349. PMID: 23022995, PMCID: PMC3551486, DOI: 10.1093/annonc/mds463.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedAged, 80 and overAntineoplastic AgentsBiomarkers, TumorCarcinoma, Renal CellCell Line, TumorCell ProliferationFemaleHepatocyte Growth FactorHumansIndolesKidney NeoplasmsMaleMiddle AgedPiperazinesPrognosisProto-Oncogene Proteins c-metPyrrolidinonesQuinolinesSulfonamidesTissue Array AnalysisConceptsRenal cell carcinomaClear cell renal cell carcinomaC-Met expressionCell renal cell carcinomaHigh c-Met expressionAdjacent normal renal tissuesNormal renal tissueARQ 197Cell carcinomaRenal tissueRCC tumorsTissue microarrayWorse disease-specific survivalC-MetClear cell RCC cell linesC-Met protein expressionCell linesPoor pathologic featuresCell subset analysisDisease-specific survivalPapillary renal cell carcinomaRange of malignanciesC-Met pathwayC-Met inhibitionPotential therapeutic targetMulti-Level Targeting of the Phosphatidylinositol-3-Kinase Pathway in Non-Small Cell Lung Cancer Cells
Zito CR, Jilaveanu LB, Anagnostou V, Rimm D, Bepler G, Maira SM, Hackl W, Camp R, Kluger HM, Chao HH. Multi-Level Targeting of the Phosphatidylinositol-3-Kinase Pathway in Non-Small Cell Lung Cancer Cells. PLOS ONE 2012, 7: e31331. PMID: 22355357, PMCID: PMC3280285, DOI: 10.1371/journal.pone.0031331.Peer-Reviewed Original ResearchMeSH KeywordsAdenocarcinomaAdultAgedAged, 80 and overAntineoplastic AgentsBlotting, WesternCarcinoma, Non-Small-Cell LungCarcinoma, Squamous CellCell Line, TumorCell ProliferationClass Ia Phosphatidylinositol 3-KinaseDrug SynergismFemaleFluorescent Antibody TechniqueHumansImmunoenzyme TechniquesLung NeoplasmsMaleMiddle AgedPhosphoinositide-3 Kinase InhibitorsProtein Kinase InhibitorsProto-Oncogene Proteins c-aktSignal TransductionTissue Array AnalysisTOR Serine-Threonine KinasesConceptsNon-small cell lung cancerNSCLC cell linesDual PI3K/mTOR inhibitorPI3K/AKT/mTOR pathwayPI3K/mTOR inhibitorAKT/mTOR pathwayPI3K inhibitorsNVP-BEZ235MTOR inhibitorsNVP-BKM120MTOR expressionAdvanced stageCell linesMTOR pathwayPI3K subunitsNon-small cell lung cancer cellsK inhibitorsCell lung cancer cellsCell lung cancerSquamous cell carcinomaP85 expressionSynergistic growth inhibitionRegulation of pAktExpression of p85Lung cancer cells
2010
The CCK2 receptor antagonist, YF476, inhibits Mastomys ECL cell hyperplasia and gastric carcinoid tumor development
Kidd M, Siddique ZL, Drozdov I, Gustafsson BI, Camp RL, Black JW, Boyce M, Modlin IM. The CCK2 receptor antagonist, YF476, inhibits Mastomys ECL cell hyperplasia and gastric carcinoid tumor development. Peptides 2010, 162: 52-60. PMID: 20144901, DOI: 10.1016/j.regpep.2010.01.009.Peer-Reviewed Original ResearchConceptsECL cell hyperplasiaECL cell secretionCell secretionCell hyperplasiaTumor developmentReceptor antagonistGastric ECL cell carcinoidsRodent speciesECL cell functionECL cell neoplasiaECL cell tumorsGastric neuroendocrine tumorsECL cell carcinoidsCell proliferationTumor formationAutocrine growth factorCCK2 receptor antagonistECL cell proliferationCell functionGrowth factorCarcinoid developmentAcid suppressionAtrophic gastritisCell carcinoidCell tumors
2009
Melanoma Prognostic Model Using Tissue Microarrays and Genetic Algorithms
Rothberg BE, Berger AJ, Molinaro AM, Subtil A, Krauthammer MO, Camp RL, Bradley WR, Ariyan S, Kluger HM, Rimm DL. Melanoma Prognostic Model Using Tissue Microarrays and Genetic Algorithms. Journal Of Clinical Oncology 2009, 27: 5772-5780. PMID: 19884546, PMCID: PMC2792999, DOI: 10.1200/jco.2009.22.8239.Peer-Reviewed Original ResearchConceptsHigh-risk groupC-Raf Is Associated with Disease Progression and Cell Proliferation in a Subset of Melanomas
Jilaveanu LB, Zito CR, Aziz SA, Conrad PJ, Schmitz JC, Sznol M, Camp RL, Rimm DL, Kluger HM. C-Raf Is Associated with Disease Progression and Cell Proliferation in a Subset of Melanomas. Clinical Cancer Research 2009, 15: 5704-5713. PMID: 19737955, PMCID: PMC2763114, DOI: 10.1158/1078-0432.ccr-09-0198.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAgedAged, 80 and overBenzenesulfonatesCell Line, TumorCell ProliferationCell SurvivalCohort StudiesDisease ProgressionFemaleGene SilencingHumansIndolesMaleMelanomaMiddle AgedNevusNiacinamidePhenolsPhenylurea CompoundsProtein Kinase InhibitorsProto-Oncogene Proteins c-rafPyridinesRNA, Small InterferingSensitivity and SpecificitySkin NeoplasmsSorafenibYoung AdultConceptsExtracellular signal-regulated kinaseC-RafC-Raf expressionSubset of melanomasPhospho-c-RafSignal-regulated kinaseCell linesProtein kinase inhibitionMitogen-activated protein kinase inhibitionDecreased viabilityDecreased Bcl-2 expressionProtein kinaseCell signalingBcl-2 inhibitionRaf kinaseB-RafMelanoma cell linesPhospho-MEKSpecific siRNAsSitu protein expressionGW5074Major isoformsKinasePhospho-ERKBcl-2 expressionDefining Molecular Phenotypes of Human Papillomavirus–Associated Oropharyngeal Squamous Cell Carcinoma
Weinberger PM, Yu Z, Kountourakis P, Sasaki C, Haffty BG, Kowalski D, Merkley MA, Rimm DL, Camp RL, Psyrri A. Defining Molecular Phenotypes of Human Papillomavirus–Associated Oropharyngeal Squamous Cell Carcinoma. Otolaryngology 2009, 141: 382-389. PMID: 19716018, DOI: 10.1016/j.otohns.2009.04.014.Peer-Reviewed Original ResearchConceptsOropharyngeal squamous cell carcinomaSquamous cell carcinomaCell carcinomaHuman Papillomavirus–Associated Oropharyngeal Squamous Cell CarcinomaP16 expressionTertiary care academic medical centerDNA presenceHPV DNA presenceVascular endothelial growth factorCross-sectional studyAcademic medical centerEndothelial growth factorEpidermal growth factor receptorMolecular phenotypesGrowth factor receptorOSCC specimensCervical cancerUnsupervised hierarchical clusteringMedical CenterDifferent molecular phenotypesTumorsGrowth factorExpression patternsFactor receptorProtein expression
2008
AQUA analysis of thymidylate synthase reveals localization to be a key prognostic biomarker in 2 large cohorts of colorectal carcinoma.
Gustavson MD, Molinaro AM, Tedeschi G, Camp RL, Rimm DL. AQUA analysis of thymidylate synthase reveals localization to be a key prognostic biomarker in 2 large cohorts of colorectal carcinoma. Archives Of Pathology & Laboratory Medicine 2008, 132: 1746-52. PMID: 18976010, DOI: 10.5858/132.11.1746.Peer-Reviewed Original ResearchConceptsThymidylate synthase expressionSynthase expressionColorectal carcinomaSignificant associationDisease-specific survivalColon cancer outcomesColon cancer survivalKey prognostic biomarkersRetrospective cohortNodal statusPrognostic valueColorectal cancerCancer outcomesCancer survivalPathologic classificationPrognostic biomarkerLarge cohortSecond cohortAQUA scoreCytoplasmic expressionNuclear expressionCohortHigh nuclearCytoplasmic ratioFirst cohort
2007
Phosphorylation of Akt (Ser473) Predicts Poor Clinical Outcome in Oropharyngeal Squamous Cell Cancer
Yu Z, Weinberger PM, Sasaki C, Egleston BL, Speier WF, Haffty B, Kowalski D, Camp R, Rimm D, Vairaktaris E, Burtness B, Psyrri A. Phosphorylation of Akt (Ser473) Predicts Poor Clinical Outcome in Oropharyngeal Squamous Cell Cancer. Cancer Epidemiology Biomarkers & Prevention 2007, 16: 553-558. PMID: 17372251, DOI: 10.1158/1055-9965.epi-06-0121.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedBiomarkers, TumorCarcinoma, Squamous CellChi-Square DistributionFemaleHumansImmunoenzyme TechniquesMaleMiddle AgedNeoplasm Recurrence, LocalOropharyngeal NeoplasmsPhosphorylationPredictive Value of TestsPrognosisProportional Hazards ModelsProtein Array AnalysisProto-Oncogene Proteins c-aktPTEN PhosphohydrolaseSurvival AnalysisConceptsNuclear p-AktAkt activationP-AktOropharyngeal squamous cell cancerSquamous cell carcinoma progressionPhosphorylated AktCohort of patientsLocal recurrence rateOverall survival rateSquamous cell cancerPoor clinical outcomeAdverse patient outcomesP-AKT levelsPromising molecular targetP-AKT expressionProtein expression levelsPhosphorylation of AktDisease recurrenceLocal recurrenceCell cancerClinical outcomesAdjusted analysisPrognostic significanceRecurrence ratePatient outcomesThe X-linked inhibitor of apoptosis protein (XIAP) is up-regulated in metastatic melanoma, and XIAP cleavage by Phenoxodiol is associated with Carboplatin sensitization
Kluger HM, McCarthy MM, Alvero AB, Sznol M, Ariyan S, Camp RL, Rimm DL, Mor G. The X-linked inhibitor of apoptosis protein (XIAP) is up-regulated in metastatic melanoma, and XIAP cleavage by Phenoxodiol is associated with Carboplatin sensitization. Journal Of Translational Medicine 2007, 5: 6. PMID: 17257402, PMCID: PMC1796544, DOI: 10.1186/1479-5876-5-6.Peer-Reviewed Original ResearchConceptsMetastatic melanomaXIAP expressionCell linesCy5-conjugated antibodiesMechanism of actionMelanoma cell linesPrimary lesionOvarian cancerTherapeutic approachesTissue microarrayDisease aggressionCarboplatin sensitivityChemotherapy resistanceMalignant progressionClinical specimensBenign counterpartsCarboplatinMelanomaChemotherapy sensitizationPrimary specimensPhenoxodiolResistant cellsMelanoma cellsHigh expressionMelanoma resistanceCTGF, intestinal stellate cells and carcinoid fibrogenesis.
Kidd M, Modlin I, Shapiro M, Camp R, Mane S, Usinger W, Murren J. CTGF, intestinal stellate cells and carcinoid fibrogenesis. World Journal Of Gastroenterology 2007, 13: 5208-16. PMID: 17876891, PMCID: PMC4171302, DOI: 10.3748/wjg.v13.i39.5208.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedCarcinoid TumorCase-Control StudiesCells, CulturedConnective Tissue Growth FactorExtracellular MatrixFemaleFibrosisGastrointestinal NeoplasmsHumansImmediate-Early ProteinsIntercellular Signaling Peptides and ProteinsIntestine, SmallMaleMiddle AgedRNA, MessengerTissue Array AnalysisTransforming Growth Factor beta1ConceptsCarcinoid tumor patientsStellate cellsCarcinoid tumorsTumor patientsTissue microarrayGI carcinoid tumorsDevelopment of agentsGI carcinoidsPlasma CTGFSerum CTGFSystemic complicationsFibrotic mediatorsGastric carcinoidsHistological fibrosisPeritoneal fibrosisNormal mucosaTumor fibrosisFibrotic responseFibrosisFibrotic tissueRT-PCR analysisCTGFTGFbeta1Q-RT-PCR analysisSandwich ELISA
2006
Genetic Differentiation of Appendiceal Tumor Malignancy
Modlin IM, Kidd M, Latich I, Zikusoka MN, Eick GN, Mane SM, Camp RL. Genetic Differentiation of Appendiceal Tumor Malignancy. Annals Of Surgery 2006, 244: 52-60. PMID: 16794389, PMCID: PMC1570599, DOI: 10.1097/01.sla.0000217617.06782.d5.Peer-Reviewed Original ResearchMeSH KeywordsAdaptor Proteins, Signal TransducingAdolescentAdultAgedAged, 80 and overAntigens, NeoplasmApoptosis Regulatory ProteinsAppendiceal NeoplasmsAppendicitisBiomarkers, TumorCarcinoid TumorCell Cycle ProteinsChildChromogranin AChromograninsDiagnosis, DifferentialFemaleGene ExpressionGenetic MarkersHistone DeacetylasesHumansImmunohistochemistryMaleMiddle AgedNLR ProteinsNuclear ProteinsNucleosome Assembly Protein 1Repressor ProteinsReverse Transcriptase Polymerase Chain ReactionTrans-ActivatorsConceptsAppropriate surgical managementAppendiceal carcinoidsAppendiceal tumorsSurgical managementMAGE-D2Malignant appendiceal tumorsAppendiceal adenocarcinoidAdenocarcinoid tumorCarcinoid tumorsHistologic evidenceIncidental lesionsColorectal cancerPathologic criteriaQ-RT-PCRAppendiceal tissueGene expressionNormal mucosaTumor potentialCarcinoidsTumor behaviorAppendicitisAdenocarcinoidMorphologic assessmentTumor typesTumor malignancyUtility of molecular genetic signatures in the delineation of gastric neoplasia
Kidd M, Modlin IM, Mane SM, Camp RL, Eick GN, Latich I, Zikusoka MN. Utility of molecular genetic signatures in the delineation of gastric neoplasia. Cancer 2006, 106: 1480-1488. PMID: 16502410, DOI: 10.1002/cncr.21758.Peer-Reviewed Original ResearchMeSH KeywordsAdaptor Proteins, Signal TransducingAdenocarcinomaAdultAgedAntigens, NeoplasmCarcinoid TumorChromogranin AChromograninsDiagnosis, DifferentialFemaleGene Expression ProfilingGenetic MarkersHistone DeacetylasesHumansImmunohistochemistryMaleMiddle AgedNeoplasm InvasivenessOligonucleotide Array Sequence AnalysisPhenotypeRepressor ProteinsReverse Transcriptase Polymerase Chain ReactionStomach NeoplasmsTrans-ActivatorsConceptsType III/IVGastric carcinoidsMAGE-D2Gastric neoplasiaMolecular genetic signaturesType I/IIGenetic signaturesTumor invasionSimilar expression patternsCgA protein levelsProtein expression levelsII tumorsStromal tumorsClinical behaviorGastric adenocarcinomaGastric neoplasmsMTA1 levelsNormal mucosaImmunohistochemical analysisMolecular basisExpression patternsGene expressionTumorsGene signatureBiological rationaleVascular endothelial growth factor, FLT‐1, and FLK‐1 analysis in a pancreatic cancer tissue microarray
Chung GG, Yoon HH, Zerkowski MP, Ghosh S, Thomas L, Harigopal M, Charette LA, Salem RR, Camp RL, Rimm DL, Burtness BA. Vascular endothelial growth factor, FLT‐1, and FLK‐1 analysis in a pancreatic cancer tissue microarray. Cancer 2006, 106: 1677-1684. PMID: 16532435, DOI: 10.1002/cncr.21783.Peer-Reviewed Original ResearchConceptsPancreatic cancer tissue microarrayCancer tissue microarrayTissue microarrayVEGF receptor 1Flt-1Receptor 1Kaplan-Meier survival curvesVascular endothelial growth factor (VEGF) expressionIndependent prognostic factorVascular endothelial growth factorFlk-1Growth factor expressionEndothelial growth factorPrimary antibodyFlt-1 expressionOverall survivalPrognostic factorsWorse survivalAggressive diseaseDisease stagePoor prognosisTumor expressionPancreatic cancerPancreatic adenocarcinomaPrincipal receptorQ RT-PCR Detection of Chromogranin A
Kidd M, Modlin IM, Mane SM, Camp RL, Shapiro MD. Q RT-PCR Detection of Chromogranin A. Annals Of Surgery 2006, 243: 273-280. PMID: 16432362, PMCID: PMC1448909, DOI: 10.1097/01.sla.0000197734.28551.0f.Peer-Reviewed Original ResearchConceptsGI carcinoidsGI adenocarcinomasQ-RT-PCRNormal mucosaLymph node metastasisNormal lymph nodesCgA gene expressionCgA protein levelsProtein expression levelsAppendiceal tumorsNormal LNsLiver metastasesLN metastasisLymph nodesNode metastasisAppendiceal carcinoidsNonmetastatic lesionsEpithelial tumorsCgA levelsTissue microarrayTherapeutic strategiesCarcinoidsNE cellsImmunohistochemical measurementsRT-PCR detectionThe Role of Genetic Markers— NAP1L1, MAGE-D2, and MTA1—in Defining Small-Intestinal Carcinoid Neoplasia
Kidd M, Modlin IM, Mane SM, Camp RL, Eick G, Latich I. The Role of Genetic Markers— NAP1L1, MAGE-D2, and MTA1—in Defining Small-Intestinal Carcinoid Neoplasia. Annals Of Surgical Oncology 2006, 13: 253-262. PMID: 16424981, DOI: 10.1245/aso.2006.12.011.Peer-Reviewed Original ResearchMeSH KeywordsAdaptor Proteins, Signal TransducingAdultAgedAntigens, NeoplasmBiomarkers, TumorCarcinoid TumorCell Cycle ProteinsFemaleGenetic MarkersHistone DeacetylasesHumansIntestinal NeoplasmsIntestine, SmallMaleMiddle AgedNuclear ProteinsNucleosome Assembly Protein 1Repressor ProteinsReverse Transcriptase Polymerase Chain ReactionTissue Array AnalysisTrans-ActivatorsConceptsSmall intestinal carcinoidsQuantitative reverse transcriptase-polymerase chain reactionColorectal carcinomaMAGE-D2Primary tumorLymph node metastasisImmunohistochemical expression levelsReverse transcriptase-polymerase chain reactionNonmetastatic primary tumorsTranscriptase-polymerase chain reactionHealthy tissueGastrointestinal carcinoidsLN metastasisNode metastasisIntestinal carcinoidsPrognostic utilityHealthy mucosaMalignant potentialProstate carcinomaTissue microarrayImmunohistochemical methodsCarcinomaImmunohistochemical approachMetastasisCarcinoidsMolecular Classification Identifies a Subset of Human Papillomavirus–Associated Oropharyngeal Cancers With Favorable Prognosis
Weinberger PM, Yu Z, Haffty BG, Kowalski D, Harigopal M, Brandsma J, Sasaki C, Joe J, Camp RL, Rimm DL, Psyrri A. Molecular Classification Identifies a Subset of Human Papillomavirus–Associated Oropharyngeal Cancers With Favorable Prognosis. Journal Of Clinical Oncology 2006, 24: 736-747. PMID: 16401683, DOI: 10.1200/jco.2004.00.3335.Peer-Reviewed Original ResearchConceptsOropharyngeal squamous cell carcinomaHuman papillomavirusFavorable prognosisClass IIILocal recurrencePrognostic valueHuman Papillomavirus–Associated Oropharyngeal CancerHPV DNA presenceHPV16 viral loadDisease-free survivalMultivariable survival analysisSquamous cell carcinomaLong-term patientsThree-class modelReal-time polymerase chain reactionHPV statusLow p53Only patientsOverall survivalOropharyngeal cancerViral loadCell carcinomaPolymerase chain reactionClinical trialsP16 overexpression