2022
Impact of radiotherapy delay following biopsy for patients with unresected glioblastoma.
Gao S, Jin L, Moliterno J, Corbin ZA, Bindra RS, Contessa JN, Yu JB, Park HS. Impact of radiotherapy delay following biopsy for patients with unresected glioblastoma. Journal Of Neurosurgery 2022, 138: 610-620. PMID: 35907197, DOI: 10.3171/2022.5.jns212761.Peer-Reviewed Original ResearchMeSH KeywordsBiopsyBrain NeoplasmsGlioblastomaHumansProportional Hazards ModelsRadiotherapy, AdjuvantConceptsWeeks of biopsyOverall survivalCox proportional hazards regression modelingProportional hazards regression modelingNational Cancer DatabaseInitiation of radiotherapyKaplan-Meier methodWorse overall survivalWilcoxon rank sum testEffects of confoundersRank sum testUnresected diseaseAdjuvant radiotherapyConcurrent chemotherapyMedian intervalMultivariable analysisRadiotherapy delayCancer DatabaseClinical dataBiopsyPatientsLate initiationAggressive natureRadiotherapyPotential association
2019
Pathologic staging changes in oral cavity squamous cell carcinoma: Stage migration and implications for adjuvant treatment
Lee NCJ, Eskander A, Park HS, Mehra S, Burtness BA, Husain Z. Pathologic staging changes in oral cavity squamous cell carcinoma: Stage migration and implications for adjuvant treatment. Cancer 2019, 125: 2975-2983. PMID: 31090934, DOI: 10.1002/cncr.32161.Peer-Reviewed Original ResearchMeSH KeywordsAgedCarcinoma, Squamous CellCell MovementFemaleHumansMaleMiddle AgedMouth NeoplasmsMultivariate AnalysisNeoplasm StagingPrognosisProportional Hazards ModelsSurvival AnalysisConceptsOral cavity squamous cell carcinomaPathologic extranodal extensionDepth of invasionAJCC Cancer Staging ManualCancer Staging ManualSquamous cell carcinomaOverall survivalPT3N0 patientsStage migrationStaging ManualCell carcinomaStaging systemAJCC-8 staging systemPathologic tumor classificationNational Cancer DatabaseRisk of deathNew staging systemPStage IVBUpstaged tumorsAdjuvant treatmentDefinitive surgeryExtranodal extensionPostoperative radiotherapyPT classificationPT1 tumors
2018
Clinical value of transoral robotic surgery: Nationwide results from the first 5 years of adoption
Li H, Torabi SJ, Park HS, Yarbrough WG, Mehra S, Choi R, Judson BL. Clinical value of transoral robotic surgery: Nationwide results from the first 5 years of adoption. The Laryngoscope 2018, 129: 1844-1855. PMID: 30575965, DOI: 10.1002/lary.27740.Peer-Reviewed Original ResearchMeSH KeywordsCarcinoma, Squamous CellChemoradiotherapy, AdjuvantChi-Square DistributionCombined Modality TherapyDatabases, FactualFemaleHumansKaplan-Meier EstimateMaleMargins of ExcisionMiddle AgedMultivariate AnalysisNatural Orifice Endoscopic SurgeryNeoplasm StagingOropharyngeal NeoplasmsProportional Hazards ModelsRegression AnalysisRetrospective StudiesRobotic Surgical ProceduresTreatment OutcomeUnited StatesConceptsOropharyngeal squamous cell carcinomaTransoral robotic surgeryTransoral laser microsurgeryNonrobotic surgeryTORS patientsPositive marginsTLM patientsLower likelihoodT2 oropharyngeal squamous cell carcinomaEarly stage oropharyngeal squamous cell carcinomaLong-term oncologic outcomesUse of TORSKaplan-Meier log-rank testRobotic surgeryNational Cancer DatabaseMajority of patientsMultivariate Cox analysisSquamous cell carcinomaLog-rank testChi-square testCox multivariateN3 diseaseAdjuvant chemoradiotherapyAdjuvant radiotherapyAdjuvant therapyComplementary Medicine, Refusal of Conventional Cancer Therapy, and Survival Among Patients With Curable Cancers
Johnson SB, Park HS, Gross CP, Yu JB. Complementary Medicine, Refusal of Conventional Cancer Therapy, and Survival Among Patients With Curable Cancers. JAMA Oncology 2018, 4: 1375-1381. PMID: 30027204, PMCID: PMC6233773, DOI: 10.1001/jamaoncol.2018.2487.Peer-Reviewed Original ResearchConceptsConventional cancer treatmentsUse of CMOverall survivalComplementary medicineHormone therapyTreatment delayCharlson-Deyo comorbidity scoreCancer treatmentCancer-accredited centersNational Cancer DatabaseCharacteristics of patientsYear of diagnosisRetrospective observational studyConventional cancer therapiesHigh refusal rateRace/ethnicityNonmetastatic breastComorbidity scorePatient characteristicsCurable cancerEntire cohortColorectal cancerCancer DatabaseInsurance typeObservational studyAdjuvant Chemotherapy Is Associated With Improved Survival for Late‐Stage Salivary Squamous Cell Carcinoma
Cheraghlou S, Schettino A, Zogg CK, Otremba MD, Bhatia A, Park HS, Osborn HA, Mehra S, Yarbrough WG, Judson BL. Adjuvant Chemotherapy Is Associated With Improved Survival for Late‐Stage Salivary Squamous Cell Carcinoma. The Laryngoscope 2018, 129: 883-889. PMID: 30151947, DOI: 10.1002/lary.27444.Peer-Reviewed Original ResearchMeSH KeywordsAgedCarcinoma, Squamous CellChemoradiotherapy, AdjuvantChemotherapy, AdjuvantCombined Modality TherapyFemaleHumansKaplan-Meier EstimateMaleMiddle AgedNeoplasm StagingPropensity ScoreProportional Hazards ModelsRadiotherapy, AdjuvantRetrospective StudiesSalivary Gland NeoplasmsSurvival RateTreatment OutcomeConceptsLate-stage patientsSquamous cell carcinomaAdjuvant radiotherapyAdjuvant therapyAdjuvant chemoradiotherapyAdjuvant chemotherapyImproved survivalCell carcinomaImproved long-term survivalCox survival regressionPrimary cutaneous malignanciesUnique disease entityAddition of chemotherapyNational Cancer DatabaseEarly-stage diseaseFive-year survivalEarly-stage patientsKaplan-Meier analysisParotid gland cancerLate stage groupLong-term survivalSurvival benefitCutaneous malignanciesPoor prognosisRetrospective studyPatterns of failure in high-metastatic node number human papillomavirus-positive oropharyngeal carcinoma
Lee NCJ, Kelly JR, Park HS, An Y, Judson BL, Burtness BA, Husain ZA. Patterns of failure in high-metastatic node number human papillomavirus-positive oropharyngeal carcinoma. Oral Oncology 2018, 85: 35-39. PMID: 30220317, DOI: 10.1016/j.oraloncology.2018.08.001.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedAged, 80 and overBrachytherapyCarcinoma, Squamous CellCombined Modality TherapyFemaleFollow-Up StudiesHumansLymphatic MetastasisMaleMiddle AgedNeck DissectionNeoplasm MetastasisNeoplasm Recurrence, LocalOropharyngeal NeoplasmsPapillomavirus InfectionsProgression-Free SurvivalProportional Hazards ModelsRadiotherapy, AdjuvantRetrospective StudiesSalvage TherapyConceptsProgression-free survivalInvolved lymph nodesDistant metastasisPatterns of failureLocoregional recurrenceLymph nodesHuman papillomavirus-positive oropharyngeal carcinomaMultivariate analysisEdition American Joint CommitteeRate of DMWorse progression-free survivalHigh DM rateDedicated clinical trialsAmerican Joint CommitteeCancer (AJCC) staging systemProportional hazards regressionExternal beam radiationOropharynx cancerFree survivalNeck dissectionOropharyngeal carcinomaOverall survivalDisease recurrenceIntraoperative brachytherapyOPC patientsAssociation Between Radiation Dose and Outcomes With Postoperative Radiotherapy for N0-N1 Non–Small Cell Lung Cancer
Wang EH, Corso CD, Park HS, Chen AB, Wilson LD, Kim AW, Decker RH, Yu JB. Association Between Radiation Dose and Outcomes With Postoperative Radiotherapy for N0-N1 Non–Small Cell Lung Cancer. American Journal Of Clinical Oncology 2018, 41: 152-158. PMID: 26523443, DOI: 10.1097/coc.0000000000000245.Peer-Reviewed Original ResearchMeSH KeywordsAcademic Medical CentersAgedCarcinoma, Non-Small-Cell LungCohort StudiesDatabases, FactualDisease-Free SurvivalDose-Response Relationship, RadiationFemaleHumansLung NeoplasmsMaleMargins of ExcisionMiddle AgedMultivariate AnalysisNeoplasm InvasivenessNeoplasm StagingPneumonectomyPrognosisProportional Hazards ModelsRadiotherapy DosageRadiotherapy, AdjuvantRadiotherapy, Intensity-ModulatedRetrospective StudiesSurvival AnalysisTreatment OutcomeConceptsNon-small cell lung cancerPostoperative radiotherapyCell lung cancerIntensity-modulated radiation therapyPORT doseOverall survivalLung cancerRadiation therapyUse of PORTNational Cancer Data BaseStage IIProportion of patientsGroup of patientsProportional hazards regressionEvidence of benefitSurgical resectionWorse survivalMultivariable analysisHazards regressionRetrospective studyConformal radiationPatientsRadiotherapy techniquesRadiation modalitiesModern treatment
2017
Adjuvant Therapy Use and Survival in Stage II Endometrial Cancer
Lester-Coll NH, Young MR, Park HS, Ratner ES, Litkouhi B, Damast S. Adjuvant Therapy Use and Survival in Stage II Endometrial Cancer. International Journal Of Gynecological Cancer 2017, 27: 1904-1911. PMID: 28763364, DOI: 10.1097/igc.0000000000001095.Peer-Reviewed Original ResearchConceptsReceipt of chemotherapyEndometrioid endometrial carcinomaNational Cancer Data BaseImproved overall survivalRole of chemotherapyOverall survivalAdjuvant chemotherapyAdjuvant treatmentStage II endometrial cancerCox proportional hazards regressionPropensity scoreAdjuvant therapy useGrade 3 diseaseStage II patientsProportional hazards regressionWorse overall survivalMultivariable logistic regressionKaplan-Meier estimatesLog-rank testAdjuvant radiotherapyExcellent prognosisLymphovascular invasionObservational cohortEEC patientsEndometrial cancerPatterns of care and outcomes for use of concurrent chemoradiotherapy over radiotherapy alone for anaplastic gliomas
Yeboa DN, Rutter CE, Park HS, Lester-Coll NH, Corso CD, Mancini BR, Bindra RS, Contessa J, Yu JB. Patterns of care and outcomes for use of concurrent chemoradiotherapy over radiotherapy alone for anaplastic gliomas. Radiotherapy And Oncology 2017, 125: 258-265. PMID: 29054377, DOI: 10.1016/j.radonc.2017.09.027.Peer-Reviewed Original ResearchMeSH KeywordsAdultBrain NeoplasmsChemoradiotherapyCohort StudiesDatabases, FactualFemaleGliomaHumansKaplan-Meier EstimateMaleMiddle AgedPropensity ScoreProportional Hazards ModelsYoung AdultConceptsUse of CCRTConcurrent chemoradiotherapyPatterns of careAnaplastic gliomasOverall survivalCox proportional hazards regression modelingProportional hazards regression modelingMultivariable logistic regression analysisConcurrent CRTNational Cancer DatabaseKaplan-Meier analysisLog-rank testLogistic regression analysisGrade III gliomasAdjusted hazardAdult patientsImproved survivalCancer DatabaseDesign cohortRadiotherapyPropensity scorePatientsGliomasChemoradiotherapyRegression modelingComparison of Survival Outcomes Among Human Papillomavirus–Negative cT1-2 N1-2b Patients With Oropharyngeal Squamous Cell Cancer Treated With Upfront Surgery vs Definitive Chemoradiation Therapy: An Observational Study
Kelly JR, Park HS, An Y, Contessa JN, Yarbrough WG, Burtness BA, Decker R, Husain Z. Comparison of Survival Outcomes Among Human Papillomavirus–Negative cT1-2 N1-2b Patients With Oropharyngeal Squamous Cell Cancer Treated With Upfront Surgery vs Definitive Chemoradiation Therapy: An Observational Study. JAMA Oncology 2017, 3: 1107-1111. PMID: 28056116, PMCID: PMC5824218, DOI: 10.1001/jamaoncol.2016.5769.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedAged, 80 and overCarcinoma, Squamous CellChemoradiotherapyFemaleHumansKaplan-Meier EstimateMaleMiddle AgedOropharyngeal NeoplasmsPapillomaviridaeProportional Hazards ModelsConceptsOropharyngeal squamous cell carcinomaHPV-negative oropharyngeal squamous cell carcinomaNegative oropharyngeal squamous cell carcinomaMultivariable Cox regressionPrimary surgical resectionOverall survivalUpfront surgerySurgical resectionObservational studyChemoradiation therapySurgical patientsAdjuvant CRTSurvival outcomesCox regressionNational Cancer Data BaseOropharyngeal squamous cell cancerDefinitive chemoradiation therapyMost surgical patientsConcurrent chemoradiation therapyHPV-positive diseaseMargin-negative resectionOptimal patient selectionPrimary treatment modalityUpfront surgical resectionKaplan-Meier analysisThe prognostic value of extranodal extension in human papillomavirus‐associated oropharyngeal squamous cell carcinoma
An Y, Park HS, Kelly JR, Stahl JM, Yarbrough WG, Burtness BA, Contessa JN, Decker RH, Koshy M, Husain ZA. The prognostic value of extranodal extension in human papillomavirus‐associated oropharyngeal squamous cell carcinoma. Cancer 2017, 123: 2762-2772. PMID: 28323338, DOI: 10.1002/cncr.30598.Peer-Reviewed Original ResearchMeSH KeywordsCarcinoma, Squamous CellChemoradiotherapy, AdjuvantFemaleHead and Neck NeoplasmsHumansMaleMiddle AgedMultivariate AnalysisNeoplasm InvasivenessNeoplasm StagingOropharyngeal NeoplasmsOtorhinolaryngologic Surgical ProceduresPapillomaviridaePapillomavirus InfectionsPrognosisPropensity ScoreProportional Hazards ModelsRadiotherapy, AdjuvantRetrospective StudiesSquamous Cell Carcinoma of Head and NeckSurvival RateConceptsOropharyngeal squamous cell carcinomaENE-positive patientsHPV-positive oropharyngeal squamous cell carcinomaExtranodal extensionHPV-positive patientsOverall survivalPrimary surgeryPT4 tumorsAdjuvant chemoradiationConcurrent chemoradiotherapyAdjuvant treatmentPositive oropharyngeal squamous cell carcinomaPT3/pT4 tumorsMultivariable Cox regression analysisNational Cancer Data BasePredictors of OSPropensity score-matched comparisonAdjuvant concurrent chemoradiotherapyCharlson-Deyo scoreInvolved lymph nodesAdverse prognostic factorInferior overall survivalLymph node statusCox regression analysisSingle-institution studyPredictors of Nonadherence to NCCN Guideline Recommendations for the Management of Stage I Anal Canal Cancer.
Kole AJ, Stahl JM, Park HS, Khan SA, Johung KL. Predictors of Nonadherence to NCCN Guideline Recommendations for the Management of Stage I Anal Canal Cancer. Journal Of The National Comprehensive Cancer Network 2017, 15: 355-362. PMID: 28275036, DOI: 10.6004/jnccn.2017.0035.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedAged, 80 and overAntineoplastic Combined Chemotherapy ProtocolsAnus NeoplasmsCombined Modality TherapyDatabases, FactualDisease ManagementFemaleHumansMaleMedication AdherenceMiddle AgedNeoplasm GradingNeoplasm StagingOdds RatioPractice Guidelines as TopicPrognosisProportional Hazards ModelsRisk FactorsTreatment OutcomeConceptsAnal canal cancerAnal cancerNCCN recommendationsSurgical proceduresNCCN Clinical Practice GuidelinesNational Cancer Data BaseGuideline-discordant careAnal canal carcinomaPredictors of nonadherenceClinical practice guidelinesHigh tumor gradeLow-grade tumorsLogistic regression modelingNon-academic facilitiesChi-square testDefinitive chemoradiotherapyGuideline concordantConcurrent chemoradiotherapyAnal carcinomaStandard therapyClinicopathologic factorsGuideline recommendationsMultivariable analysisMale sexTumor size
2016
Concurrent chemoradiotherapy versus radiotherapy alone for “biopsy‐only” glioblastoma multiforme
Kole AJ, Park HS, Yeboa DN, Rutter CE, Corso CD, Aneja S, Lester-Coll NH, Mancini BR, Knisely JP, Yu JB. Concurrent chemoradiotherapy versus radiotherapy alone for “biopsy‐only” glioblastoma multiforme. Cancer 2016, 122: 2364-2370. PMID: 27172136, DOI: 10.1002/cncr.30063.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedAged, 80 and overBiopsyChemoradiotherapyCombined Modality TherapyComorbidityFemaleGlioblastomaHumansMaleMiddle AgedOdds RatioProportional Hazards ModelsTreatment OutcomeConceptsPropensity score-matched analysisConcurrent chemoradiotherapySignificant OS benefitOverall survivalGlioblastoma multiformeOS benefitUS National Cancer Data BaseMultivariable Cox proportional hazards regressionNational Cancer Data BaseCox proportional hazards regressionImproved overall survivalStandard postoperative therapyProportional hazards regressionMultivariable logistic regressionLog-rank testStandard of careChi-square testClinicopathologic predictorsPostoperative therapySurgical resectionImproved survivalMedian ageMultivariable analysisHazards regressionNational cohort
2015
Addition of radiotherapy to adjuvant chemotherapy is associated with improved overall survival in resected pancreatic adenocarcinoma: An analysis of the National Cancer Data Base
Rutter CE, Park HS, Corso CD, Lester-Coll NH, Mancini BR, Yeboa DN, Johung KL. Addition of radiotherapy to adjuvant chemotherapy is associated with improved overall survival in resected pancreatic adenocarcinoma: An analysis of the National Cancer Data Base. Cancer 2015, 121: 4141-4149. PMID: 26280559, DOI: 10.1002/cncr.29652.Peer-Reviewed Original ResearchConceptsImproved overall survivalNational Cancer Data BaseOverall survivalPancreatic adenocarcinomaAdjuvant chemotherapyR0 resectionR1 resectionPN1 diseaseNational cohortSubset analysisPropensity scoreAddition of radiotherapyMedian radiotherapy doseOutcome of chemotherapyLarge national cohortPT1-3N0CRT groupClinicopathologic characteristicsCRT patientsRandomized comparisonCox regressionRadiotherapy doseOptimal treatmentPancreatic cancerUnivariate analysis
2012
Immortal Time Bias: A Frequently Unrecognized Threat to Validity in the Evaluation of Postoperative Radiotherapy
Park HS, Gross CP, Makarov DV, Yu JB. Immortal Time Bias: A Frequently Unrecognized Threat to Validity in the Evaluation of Postoperative Radiotherapy. International Journal Of Radiation Oncology • Biology • Physics 2012, 83: 1365-1373. PMID: 22342097, DOI: 10.1016/j.ijrobp.2011.10.025.Peer-Reviewed Original ResearchConceptsSequential landmark analysesPostoperative radiotherapyImmortal time biasLandmark analysisTumor typesEnd Results (SEER) databaseObservational cohort studyTime biasObservation cohortCohort studyHazard ratioProspective trialImproved survivalResults databaseConditional survivalRoutine useSurvivalApparent benefitRadiotherapyCohort