2020
Stage I-II nodular lymphocyte-predominant Hodgkin lymphoma: a multi-institutional study of adult patients by ILROG
Binkley M, Rauf M, Milgrom S, Pinnix C, Tsang R, Dickinson M, Ng A, Roberts K, Gao S, Balogh A, Ricardi U, Levis M, Casulo C, Stolten M, Specht L, Plastaras J, Wright C, Kelsey C, Brady J, Mikhaeel N, Hoppe B, Terezakis S, Picardi M, Della Pepa R, Kirova Y, Akhtar S, Maghfoor I, Koenig J, Jackson C, Song E, Sehgal S, Advani R, Natkunam Y, Constine L, Eich H, Wirth A, Hoppe R. Stage I-II nodular lymphocyte-predominant Hodgkin lymphoma: a multi-institutional study of adult patients by ILROG. Blood 2020, 135: 2365-2374. PMID: 32211877, DOI: 10.1182/blood.2019003877.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedCombined Modality TherapyFemaleFollow-Up StudiesHodgkin DiseaseHumansKaplan-Meier EstimateLymphoma, Large B-Cell, DiffuseMaleMiddle AgedNeoplasm StagingNeoplasms, Radiation-InducedNeoplasms, Second PrimaryPositron Emission Tomography Computed TomographyProgression-Free SurvivalProportional Hazards ModelsRecurrenceRetrospective StudiesSalvage TherapySurvival AnalysisTreatment OutcomeYoung AdultConceptsNodular lymphocyte-predominant Hodgkin lymphomaProgression-free survivalOverall survivalImmunoarchitectural patternsAssociated with worse progression-free survivalFive-year PFSLymphocyte-predominant Hodgkin lymphomaProgression-free survival ratesStudy of adult patientsSingle-agent rituximabLarge-cell transformationStage I diseaseMedian follow-upMulticenter retrospective studyMulti-institutional studyHodgkin lymphomaI diseaseRT cohortHistological variantsMedian agePrimary managementRetrospective studyRituximabAdult patientsRadiotherapy
2018
Associations of preoperative breast magnetic resonance imaging with subsequent mastectomy and breast cancer mortality
Wang SY, Long JB, Killelea BK, Evans SB, Roberts KB, Silber AL, Davidoff AJ, Sedghi T, Gross CP. Associations of preoperative breast magnetic resonance imaging with subsequent mastectomy and breast cancer mortality. Breast Cancer Research And Treatment 2018, 172: 453-461. PMID: 30099634, PMCID: PMC6193824, DOI: 10.1007/s10549-018-4919-3.Peer-Reviewed Original ResearchConceptsBreast-conserving surgeryBreast cancer mortalitySubsequent mastectomyCancer mortalityPre-operative MRIBreast cancerSubgroup analysisStage I/II breast cancerEnd Results-Medicare datasetPreoperative breast magnetic resonanceEarly-stage breast cancerMagnetic resonance imaging useReceipt of radiotherapyBreast magnetic resonanceClinical outcomesCox regressionResultsOur sampleImproved outcomesAdjusted ratesMRI useOlder womenLower riskMastectomyImaging useRadiotherapy
2017
Annual Facility Treatment Volume and Patient Survival for Mycosis Fungoides and Sézary Syndrome
Kann BH, Park HS, Yeboa DN, Aneja S, Girardi M, Foss FM, Roberts KB, Wilson LD. Annual Facility Treatment Volume and Patient Survival for Mycosis Fungoides and Sézary Syndrome. Clinical Lymphoma Myeloma & Leukemia 2017, 17: 520-526.e2. PMID: 28655598, DOI: 10.1016/j.clml.2017.05.017.Peer-Reviewed Original ResearchConceptsMF/SSOverall survivalSézary syndromeHazard ratioImproved survivalMycosis fungoidesPatient survivalHighest quintileLowest quintileTreatment volumeImproved overall survivalMultivariable Cox regressionNational Cancer DatabaseKaplan-Meier methodAnnual patient volumeNational database analysisLog-rank testContinuous variablesMedian followMultivariable analysisCox regressionOS survivalCancer DatabasePatientsPatient volume
2016
Adjuvant chemotherapy and overall survival in adult medulloblastoma
Kann BH, Lester-Coll NH, Park HS, Yeboa DN, Kelly JR, Baehring JM, Becker KP, Yu JB, Bindra RS, Roberts KB. Adjuvant chemotherapy and overall survival in adult medulloblastoma. Neuro-Oncology 2016, 19: 259-269. PMID: 27540083, PMCID: PMC5464064, DOI: 10.1093/neuonc/now150.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAgedAged, 80 and overAntineoplastic Combined Chemotherapy ProtocolsCerebellar NeoplasmsChemoradiotherapy, AdjuvantChemotherapy, AdjuvantCraniospinal IrradiationFemaleFollow-Up StudiesHumansMaleMedulloblastomaMiddle AgedNeoplasm StagingPrognosisRadiotherapy, AdjuvantSurvival RateYoung AdultConceptsGy craniospinal irradiationCraniospinal irradiationOverall survivalM0 patientsAdjuvant chemotherapyAdult MBMultivariable Cox proportional hazard modelingHigh-dose craniospinal irradiationNational Cancer Data BaseCox proportional hazard modelingSuperior overall survivalPlanned subgroup analysisMultivariable logistic regressionNational database analysisLog-rank testProportional hazard modelingPediatric medulloblastoma patientsCSI dosesPostoperative chemotherapySurgical resectionSurvival impactYear OSMultivariable analysisSubgroup analysisRisk factorsThe effect of microscopic margin status on survival in adult retroperitoneal soft tissue sarcomas
Stahl JM, Corso CD, Park HS, An Y, Rutter CE, Han D, Roberts KB. The effect of microscopic margin status on survival in adult retroperitoneal soft tissue sarcomas. European Journal Of Surgical Oncology 2016, 43: 168-174. PMID: 27335080, DOI: 10.1016/j.ejso.2016.05.031.Peer-Reviewed Original ResearchConceptsSoft tissue sarcomasOverall survivalR1 resectionR0 resectionMargin statusNational Cancer Data BaseRetroperitoneal soft tissue sarcomaCox proportional hazards regressionPropensity scoreMultivariable logistic regression modelMedian overall survivalMicroscopic margin statusPre-operative RTReceipt of RTUnderwent R0 resectionSuperior overall survivalSmaller tumor sizeLow tumor gradeProportional hazards regressionLog-rank testRetroperitoneal soft tissueLogistic regression modelsLiposarcoma histologyR1 patientsRadiotherapy receiptPreoperative breast magnetic resonance imaging and contralateral breast cancer occurrence among older women with ductal carcinoma in situ
Wang SY, Long JB, Killelea BK, Evans SB, Roberts KB, Silber A, Gross CP. Preoperative breast magnetic resonance imaging and contralateral breast cancer occurrence among older women with ductal carcinoma in situ. Breast Cancer Research And Treatment 2016, 158: 139-148. PMID: 27287780, PMCID: PMC5554869, DOI: 10.1007/s10549-016-3858-0.Peer-Reviewed Original ResearchConceptsContralateral breast cancerMagnetic resonance imagingPreoperative magnetic resonance imagingDuctal carcinomaMRI usePreoperative breast magnetic resonance imagingEnd Results-Medicare datasetInvasive contralateral breast cancerOccult contralateral breast cancerResonance imagingSynchronous contralateral breast cancerImpact of MRIStage-specific incidence ratesPreoperative MRI useBreast magnetic resonance imagingBreast cancer occurrenceCBC eventsCBC ratesCumulative incidencePropensity score approachIncidence rateInvasive diseaseBreast cancerCancer occurrenceOlder women
2015
Preoperative Breast Magnetic Resonance Imaging and Contralateral Breast Cancer Occurrence Among Older Women With Breast Cancer
Wang SY, Long JB, Killelea BK, Evans SB, Roberts KB, Silber A, Gross CP. Preoperative Breast Magnetic Resonance Imaging and Contralateral Breast Cancer Occurrence Among Older Women With Breast Cancer. Journal Of Clinical Oncology 2015, 34: 321-328. PMID: 26628465, PMCID: PMC4872032, DOI: 10.1200/jco.2015.62.9741.Peer-Reviewed Original ResearchConceptsContralateral breast cancerPreoperative magnetic resonance imagingMagnetic resonance imagingBreast cancerCBC eventsMRI useOlder womenPreoperative breast magnetic resonance imagingOccult contralateral breast cancerResonance imagingStage IIEarly-stage breast cancerPreoperative MRI useBreast magnetic resonance imagingBreast cancer occurrenceSEER-Medicare databaseImpact of detectionDetection rateCumulative incidenceCancer occurrenceStage ICancerPropensity scoreWomenPatientsThe Role of Patient Factors, Cancer Characteristics, and Treatment Patterns in the Cost of Care for Medicare Beneficiaries with Breast Cancer
Xu X, Herrin J, Soulos PR, Saraf A, Roberts KB, Killelea BK, Wang SY, Long JB, Wang R, Ma X, Gross CP. The Role of Patient Factors, Cancer Characteristics, and Treatment Patterns in the Cost of Care for Medicare Beneficiaries with Breast Cancer. Health Services Research 2015, 51: 167-186. PMID: 26119176, PMCID: PMC4722219, DOI: 10.1111/1475-6773.12328.Peer-Reviewed Original ResearchConceptsBreast cancer careHospital referral regionsCancer careMedicare expendituresBreast cancerRadiation therapyTreatment factorsMean Medicare expendituresEnd Results-MedicareSpecific treatment modalitiesContribution of patientCost of careHighest spending quintilePatient factorsTreatment patternsTumor characteristicsCancer characteristicsTreatment modalitiesReferral regionsMedicare beneficiariesQuintilePatientsCancerCareTherapyHematopoietic stem cell transplantation for primary cutaneous γδ T-cell lymphoma and refractory subcutaneous panniculitis-like T-cell lymphoma
Gibson JF, Alpdogan O, Subtil A, Girardi M, Wilson LD, Roberts K, Foss F. Hematopoietic stem cell transplantation for primary cutaneous γδ T-cell lymphoma and refractory subcutaneous panniculitis-like T-cell lymphoma. Journal Of The American Academy Of Dermatology 2015, 72: 1010-1015.e5. PMID: 25981001, DOI: 10.1016/j.jaad.2015.01.003.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedAllograftsAutograftsBiopsy, NeedleFemaleFollow-Up StudiesGraft RejectionGraft SurvivalHematopoietic Stem Cell TransplantationHumansImmunohistochemistryLymphoma, T-CellLymphoma, T-Cell, CutaneousMaleMiddle AgedPanniculitisPositron-Emission TomographyRetrospective StudiesRisk AssessmentSampling StudiesSkin NeoplasmsTreatment OutcomeConceptsHematopoietic stem cell transplantationT-cell lymphomaSubcutaneous panniculitis-like T-cell lymphomaAllogeneic hematopoietic stem cell transplantationPanniculitis-like T-cell lymphomaCutaneous T-cell lymphomaStem cell transplantationPCGD-TCLCell transplantationPrimary cutaneous γδ T-cell lymphomaCutaneous γδ T-cell lymphomaAutologous hematopoietic stem cell transplantationOutcome of HSCTAdvanced-stage mycosis fungoidesΓδ T-cell lymphomaPanniculitic T-cell lymphomaAggressive T-cell lymphomaMatched-related donorsMatched-unrelated donorsT-cell infiltratesPromising treatment modalityAggressive therapyMost patientsMycosis fungoidesInferior outcomes
2014
Examining the Cost-Effectiveness of Radiation Therapy Among Older Women With Favorable-Risk Breast Cancer
Sen S, Wang SY, Soulos PR, Frick KD, Long JB, Roberts KB, Yu JB, Evans SB, Chagpar AB, Gross CP. Examining the Cost-Effectiveness of Radiation Therapy Among Older Women With Favorable-Risk Breast Cancer. Journal Of The National Cancer Institute 2014, 106: dju008. PMID: 24598714, PMCID: PMC3982782, DOI: 10.1093/jnci/dju008.Peer-Reviewed Original ResearchMeSH KeywordsAgedAged, 80 and overBrachytherapyBreast NeoplasmsComorbidityCost-Benefit AnalysisFemaleHealth ExpendituresHumansLife ExpectancyMedicareNeoplasm Recurrence, LocalNeoplasm StagingQuality of LifeQuality-Adjusted Life YearsRadiotherapy, Intensity-ModulatedRisk AssessmentRisk FactorsSampling StudiesSEER ProgramUnited StatesConceptsExternal beam radiation therapyIncremental cost-effectiveness ratioQuality-adjusted life yearsBreast cancerOlder womenRadiation therapyEnd Results-Medicare databaseRisk breast cancerBeam radiation therapyCost-effectiveness ratioNewer radiation therapy modalitiesQuality of lifeRadiation therapy modalitiesLocal recurrenceTrial criteriaRT modalityTherapy modalitiesLife yearsCancerIncremental costTherapyWomenBaseline stateNew modality
2013
For-profit hospital ownership status and use of brachytherapy after breast-conserving surgery
Sen S, Soulos PR, Herrin J, Roberts KB, Yu JB, Lesnikoski BA, Ross JS, Krumholz HM, Gross CP. For-profit hospital ownership status and use of brachytherapy after breast-conserving surgery. Surgery 2013, 155: 776-788. PMID: 24787104, PMCID: PMC4008843, DOI: 10.1016/j.surg.2013.12.009.Peer-Reviewed Original ResearchConceptsHospital ownership statusBreast-conserving operationsBreast-conserving surgeryUse of brachytherapyRadiation therapyOperative careBreast cancerMedicare beneficiariesOverall useReceipt of brachytherapyAdjuvant radiation therapyInvasive breast cancerFemale Medicare beneficiariesGreater overall useYears of ageShort life expectancyRetrospective studyRT modalityProfit hospitalsExpensive modalityOlder womenBrachytherapy useBreast brachytherapyHospitalBrachytherapyVariation in Receipt of Radiation Therapy After Breast-conserving Surgery
Feinstein AJ, Soulos PR, Long JB, Herrin J, Roberts KB, Yu JB, Gross CP. Variation in Receipt of Radiation Therapy After Breast-conserving Surgery. Medical Care 2013, 51: 330-338. PMID: 23151590, PMCID: PMC3596448, DOI: 10.1097/mlr.0b013e31827631b0.Peer-Reviewed Original ResearchConceptsUse of RTShort life expectancyRadiation therapyBreast cancerLife expectancyPrimary surgeonStage I breast cancerEarly-stage breast cancerRadiation oncologist densityAdjuvant radiation therapyI breast cancerReceipt of radiationBreast-conserving surgeryImpact of physiciansHierarchical logistic regression modelsLogistic regression modelsLonger life expectancyLE patientsRetrospective cohortLE groupOlder womenPatientsTreatment ratesWomenCancer
2012
Proton Versus Intensity-Modulated Radiotherapy for Prostate Cancer: Patterns of Care and Early Toxicity
Yu JB, Soulos PR, Herrin J, Cramer LD, Potosky AL, Roberts KB, Gross CP. Proton Versus Intensity-Modulated Radiotherapy for Prostate Cancer: Patterns of Care and Early Toxicity. Journal Of The National Cancer Institute 2012, 105: 25-32. PMID: 23243199, PMCID: PMC3536640, DOI: 10.1093/jnci/djs463.Peer-Reviewed Original ResearchConceptsIntensity-modulated radiotherapyProstate cancerMedicare beneficiariesGenitourinary toxicityEarly toxicityProton radiotherapyMultivariable logistic regressionPatterns of careMain outcome measuresType of radiotherapyMedicare reimbursementClinical benefitRetrospective studyPRT patientsOutcome measuresComprehensive cohortPRT useIMRT patientsPatientsSociodemographic characteristicsRadiotherapyCancerLogistic regressionMonthsSignificant differencesThe Adoption of New Adjuvant Radiation Therapy Modalities Among Medicare Beneficiaries With Breast Cancer: Clinical Correlates and Cost Implications
Roberts KB, Soulos PR, Herrin J, Yu JB, Long JB, Dostaler E, Gross CP. The Adoption of New Adjuvant Radiation Therapy Modalities Among Medicare Beneficiaries With Breast Cancer: Clinical Correlates and Cost Implications. International Journal Of Radiation Oncology • Biology • Physics 2012, 85: 1186-1192. PMID: 23182396, PMCID: PMC3606652, DOI: 10.1016/j.ijrobp.2012.10.009.Peer-Reviewed Original ResearchConceptsExternal beam radiation therapyRadiation therapy modalitiesRadiation therapy costsBreast cancerRadiation therapyTherapy modalitiesTherapy costsBrachytherapy useRadiation oncologistsEnd Results-Medicare databaseConventional external beam radiation therapyAdoption of intensityBreast-conserving surgeryRadiation therapy useUse of IMRTBeam radiation therapyNewer radiation therapy modalitiesHierarchical logistic regressionHospital-based facilitiesTherapy useClinical factorsClinical correlatesTreatment optionsTreatment choicePhysician preferencePatterns of Use and Short-Term Complications of Breast Brachytherapy in the National Medicare Population From 2008–2009
Presley CJ, Soulos PR, Herrin J, Roberts KB, Yu JB, Killelea B, Lesnikoski BA, Long JB, Gross CP. Patterns of Use and Short-Term Complications of Breast Brachytherapy in the National Medicare Population From 2008–2009. Journal Of Clinical Oncology 2012, 30: 4302-4307. PMID: 23091103, PMCID: PMC3675700, DOI: 10.1200/jco.2012.43.5297.Peer-Reviewed Original ResearchConceptsWhole breast irradiationHospital referral regionsBone complicationsClinical characteristicsSkin complicationsEarly-stage breast cancerNational treatment patternsPercent of patientsShort-term complicationsBreast-conserving surgeryNational Medicare populationComplication rateTreatment patternsAge 66Breast cancerReferral regionsMedicare populationPatterns of useComplicationsMedicare beneficiariesTreatment groupsClinical practiceBreast brachytherapyBrachytherapyInstrumental variable analysisPatterns of subsequent malignancies after Hodgkin lymphoma in children and adults
Omer B, Kadan‐Lottick N, Roberts KB, Wang R, Demsky C, Kupfer GM, Cooper D, Seropian S, Ma X. Patterns of subsequent malignancies after Hodgkin lymphoma in children and adults. British Journal Of Haematology 2012, 158: 615-625. PMID: 22775513, DOI: 10.1111/j.1365-2141.2012.09211.x.Peer-Reviewed Original ResearchConceptsSecond malignant neoplasmsStandardized incidence ratiosSolid second malignant neoplasmsExtended field radiotherapyRecent treatment optionsLow-dose radiationSMN riskSubsequent malignanciesModality therapyIncidence ratiosHodgkin's lymphomaTreatment optionsMalignant neoplasmsSubgroup analysisCMT groupLower incidenceHigh riskGeneral populationAlkylator chemotherapyPatientsDose radiationRiskRadiotherapyChildrenAdultsAssessing the Impact of a Cooperative Group Trial on Breast Cancer Care in the Medicare Population
Soulos PR, Yu JB, Roberts KB, Raldow AC, Herrin J, Long JB, Gross CP. Assessing the Impact of a Cooperative Group Trial on Breast Cancer Care in the Medicare Population. Journal Of Clinical Oncology 2012, 30: 1601-1607. PMID: 22393088, PMCID: PMC3383112, DOI: 10.1200/jco.2011.39.4890.Peer-Reviewed Original ResearchMeSH KeywordsAge FactorsAgedAged, 80 and overBreast NeoplasmsCombined Modality TherapyDisease-Free SurvivalFemaleHumansLife ExpectancyMastectomy, SegmentalMedicareNeoplasm InvasivenessNeoplasm StagingPrognosisRadiotherapy, AdjuvantRisk AssessmentSEER ProgramSurvival AnalysisTreatment OutcomeUnited StatesConceptsUse of RTAdjuvant radiation therapyRadiation therapyOlder womenRT useLife expectancyBreast cancerMedicare populationEnd Results-Medicare dataStage I breast cancerStrata of ageCooperative group trialsI breast cancerBreast cancer careStrata of patientsHealth system characteristicsLog-binomial regressionShort life expectancySample of womenTreatment guidelinesCancer careInclusion criteriaGroup trialsMedicare beneficiariesClinical practice
2011
Survival outcomes in atypical teratoid rhabdoid tumor for patients undergoing radiotherapy in a Surveillance, Epidemiology, and End Results analysis
Buscariollo DL, Park HS, Roberts KB, Yu JB. Survival outcomes in atypical teratoid rhabdoid tumor for patients undergoing radiotherapy in a Surveillance, Epidemiology, and End Results analysis. Cancer 2011, 118: 4212-4219. PMID: 22213196, DOI: 10.1002/cncr.27373.Peer-Reviewed Original ResearchConceptsAtypical teratoid rhabdoid tumorMedian overall survivalOverall survivalRT useLandmark analysisRhabdoid tumorRare central nervous system malignanciesNational Cancer Institute's SurveillanceCentral nervous system malignanciesCox proportional hazards modelRole of radiotherapyEnd Results (SEER) databaseEnd Results analysisSignificant survival benefitProspective clinical trialsGross total resectionPatients ages 4Nervous system malignanciesImmortal time biasProportional hazards modelLong-term survivorshipAdjuvant radiotherapyInitial radiotherapyPrimary endpointInitial managementGeographic Analysis of the Radiation Oncology Workforce
Aneja S, Smith BD, Gross CP, Wilson LD, Haffty BG, Roberts K, Yu JB. Geographic Analysis of the Radiation Oncology Workforce. International Journal Of Radiation Oncology • Biology • Physics 2011, 82: 1723-1729. PMID: 21493013, DOI: 10.1016/j.ijrobp.2011.01.070.Peer-Reviewed Original ResearchConceptsHealth service areasPrimary care physiciansCare physiciansRadiation oncologistsTotal physiciansOncology workforceRegression analysisArea Resource FilePrimary careRadiation oncology workforceHigh RORPhysiciansGeographic maldistributionResource FileOverall physician workforceOncologistsMinority populationsPhysician workforceRORHigh minority populationsHigher incomeGeographic variabilityPopulationYearsCare
2009
Baseline Utilization of Breast Radiotherapy Before Institution of the Medicare Practice Quality Reporting Initiative
Smith BD, Smith GL, Roberts KB, Buchholz TA. Baseline Utilization of Breast Radiotherapy Before Institution of the Medicare Practice Quality Reporting Initiative. International Journal Of Radiation Oncology • Biology • Physics 2009, 74: 1506-1512. PMID: 19395182, DOI: 10.1016/j.ijrobp.2008.10.012.Peer-Reviewed Original ResearchConceptsInvasive breast cancerOmission of radiotherapyConservative surgeryPhysician Quality Reporting InitiativeBreast cancerRadiotherapy utilizationQuality Reporting InitiativeSEER-Medicare data setReceipt of radiotherapyReceipt of chemotherapyMultivariate logistic regressionUtilization of radiotherapyUnmarried marital statusComorbid illnessesAdjusted analysisBaseline useBaseline utilizationBreast radiotherapyRadiotherapyTreatment covariatesPatientsLogistic regressionCancerMarital statusWomen