2020
Primary melanotic tumors of the nervous system: a consecutive case series
Grosshans H, Huttner A, Piepmeier J, Kaulen L, Fulbright R, Baehring J, Karschnia P. Primary melanotic tumors of the nervous system: a consecutive case series. European Journal Of Neurology 2020, 27: 2303-2307. PMID: 32654331, DOI: 10.1111/ene.14437.Peer-Reviewed Original ResearchConceptsPrimary melanotic tumorsNervous systemRelapsed diseaseClinical presentationMelanotic lesionsFavorable outcomeRadiation therapyPre-contrast T1-weighted imagingRelative incidenceMelanotic tumorsHomogenous contrast enhancementYale Cancer CenterAggressive surgical treatmentConsecutive case seriesPsammomatous melanotic schwannomaNervous system tumorsT1-weighted imagingT2-weighted imagingTumor mass effectMagnetic resonance imagingMelanin-containing cellsS100 positivitySurgical resectionSurgical treatmentTumor Registry
2016
Recurrent somatic mutations in POLR2A define a distinct subset of meningiomas
Clark VE, Harmancı AS, Bai H, Youngblood MW, Lee TI, Baranoski JF, Ercan-Sencicek AG, Abraham BJ, Weintraub AS, Hnisz D, Simon M, Krischek B, Erson-Omay EZ, Henegariu O, Carrión-Grant G, Mishra-Gorur K, Durán D, Goldmann JE, Schramm J, Goldbrunner R, Piepmeier JM, Vortmeyer AO, Günel JM, Bilgüvar K, Yasuno K, Young RA, Günel M. Recurrent somatic mutations in POLR2A define a distinct subset of meningiomas. Nature Genetics 2016, 48: 1253-1259. PMID: 27548314, PMCID: PMC5114141, DOI: 10.1038/ng.3651.Peer-Reviewed Original ResearchCatalytic DomainChromosomes, Human, Pair 22Cohort StudiesDNA Mutational AnalysisEnhancer Elements, GeneticExomeGene Expression Regulation, NeoplasticGenotypeHumansKruppel-Like Factor 4Kruppel-Like Transcription FactorsMeningeal NeoplasmsMeningiomaMutationNeurofibromin 2RNA Polymerase IITumor Necrosis Factor Receptor-Associated Peptides and ProteinsIncreased Nanoparticle Delivery to Brain Tumors by Autocatalytic Priming for Improved Treatment and Imaging
Han L, Kong DK, Zheng MQ, Murikinati S, Ma C, Yuan P, Li L, Tian D, Cai Q, Ye C, Holden D, Park JH, Gao X, Thomas JL, Grutzendler J, Carson RE, Huang Y, Piepmeier JM, Zhou J. Increased Nanoparticle Delivery to Brain Tumors by Autocatalytic Priming for Improved Treatment and Imaging. ACS Nano 2016, 10: 4209-4218. PMID: 26967254, PMCID: PMC5257033, DOI: 10.1021/acsnano.5b07573.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAntineoplastic AgentsBiological TransportBlood-Brain BarrierBrain NeoplasmsCell Line, TumorDecanoic AcidsDrug Delivery SystemsEthanolaminesFemaleGenetic TherapyHeterograftsHumansMatrix Metalloproteinase 2MiceMice, Inbred C57BLNanoparticlesOptical ImagingPaclitaxelPermeabilityPolymersPurinesPyrazolesScorpion VenomsTranscytosisTumor MicroenvironmentConceptsBlood-brain barrierLow delivery efficiencyTransport of nanoparticlesCancer gene therapyNanoparticle deliveryMore nanoparticlesBrain tumorsNanoparticlesDelivery efficiencyGene therapySystemic deliveryNPsBrain malignanciesBBB modulatorsPharmacological agentsBrain cancerBrain regionsTumorsDeliveryBrainImproved treatmentInadequate amountsPositive feedback loopChemotherapyMalignancy
2014
Imaging the delivery of brain-penetrating PLGA nanoparticles in the brain using magnetic resonance
Strohbehn G, Coman D, Han L, Ragheb RR, Fahmy TM, Huttner AJ, Hyder F, Piepmeier JM, Saltzman WM, Zhou J. Imaging the delivery of brain-penetrating PLGA nanoparticles in the brain using magnetic resonance. Journal Of Neuro-Oncology 2014, 121: 441-449. PMID: 25403507, PMCID: PMC4323763, DOI: 10.1007/s11060-014-1658-0.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAntineoplastic AgentsBrain NeoplasmsConvectionDrug Delivery SystemsFerric CompoundsGlioblastomaHumansImage Processing, Computer-AssistedLactic AcidMagnetic Resonance ImagingNanoparticlesNeuroimagingPolyglycolic AcidPolylactic Acid-Polyglycolic Acid CopolymerRatsRats, Sprague-DawleyConceptsBrain-penetrating nanoparticlesSuperparamagnetic iron oxideEfficient deliveryDrug-loaded nanoparticlesDistribution of nanoparticlesTransverse relaxivityPLGA nanoparticlesNanoparticlesConvection-enhanced deliveryDelivery platformFuture clinical applicationsUniversal tumor recurrenceClinical translationSignal attenuationDetection modalitiesIron oxideSame morphologyParticle distributionDeliveryGroundbreaking approachClinical applicationRelevant volumesRelaxivityTreatment of GBMOxide
2013
Genomic Analysis of Non-NF2 Meningiomas Reveals Mutations in TRAF7, KLF4, AKT1, and SMO
Clark VE, Erson-Omay EZ, Serin A, Yin J, Cotney J, Özduman K, Avşar T, Li J, Murray PB, Henegariu O, Yilmaz S, Günel JM, Carrión-Grant G, Yılmaz B, Grady C, Tanrıkulu B, Bakırcıoğlu M, Kaymakçalan H, Caglayan AO, Sencar L, Ceyhun E, Atik AF, Bayri Y, Bai H, Kolb LE, Hebert RM, Omay SB, Mishra-Gorur K, Choi M, Overton JD, Holland EC, Mane S, State MW, Bilgüvar K, Baehring JM, Gutin PH, Piepmeier JM, Vortmeyer A, Brennan CW, Pamir MN, Kılıç T, Lifton RP, Noonan JP, Yasuno K, Günel M. Genomic Analysis of Non-NF2 Meningiomas Reveals Mutations in TRAF7, KLF4, AKT1, and SMO. Science 2013, 339: 1077-1080. PMID: 23348505, PMCID: PMC4808587, DOI: 10.1126/science.1233009.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedAged, 80 and overBrain NeoplasmsChromosomes, Human, Pair 22DNA Mutational AnalysisFemaleGenes, Neurofibromatosis 2Genomic InstabilityGenomicsHumansKruppel-Like Factor 4Kruppel-Like Transcription FactorsMaleMeningeal NeoplasmsMeningiomaMiddle AgedMutationNeoplasm GradingProto-Oncogene Proteins c-aktReceptors, G-Protein-CoupledSmoothened ReceptorTumor Necrosis Factor Receptor-Associated Peptides and Proteins
2012
Low-Grade Gliomas When and How to Treat
Omay SB, Piepmeier JM, Knisely JP. Low-Grade Gliomas When and How to Treat. Hematology/Oncology Clinics Of North America 2012, 26: 797-809. PMID: 22794284, DOI: 10.1016/j.hoc.2012.05.001.Peer-Reviewed Original ResearchConceptsSurgical resectionLow-grade gliomasPatient-specific variablesSame imaging techniqueRadiotherapeutic managementUncommon tumorClinical trialsOperative techniqueHistopathologic characterizationGrade gliomasOptimal managementAdditional studiesGliomasResectionAdequate samplesImaging techniquesPatientsPrognosisManagementTumorsTrialsRole of Neurosurgery and Radiation Therapy in the Management of Brain Tumors
Patel TR, Yu JB, Piepmeier JM. Role of Neurosurgery and Radiation Therapy in the Management of Brain Tumors. Hematology/Oncology Clinics Of North America 2012, 26: 757-777. PMID: 22794282, DOI: 10.1016/j.hoc.2012.04.001.Peer-Reviewed Original ResearchNeurosurgical Approach
Moliterno JA, Patel TR, Piepmeier JM. Neurosurgical Approach. The Cancer Journal 2012, 18: 20-25. PMID: 22290253, DOI: 10.1097/ppo.0b013e3183243f6e3.Peer-Reviewed Original ResearchConceptsMagnetic resonance imagingTumor cellsResonance imagingAggressive surgical resectionAggressive tumor removalFunctional brain tissueFrequency of seizuresExtent of resectionGoal of surgeryInfiltrative tumor cellsPreferred initial stepFunctional magnetic resonance imagingProliferative tumor cellsAdjuvant therapyAggressive resectionSurgical resectionTumors recurCritical cortical regionsNeurologic impairmentTumor burdenProspective studyTumor resectionTumor removalInfiltrative tumorsMalignant gliomas
2011
Polymeric nanoparticles for drug delivery to the central nervous system
Patel T, Zhou J, Piepmeier JM, Saltzman WM. Polymeric nanoparticles for drug delivery to the central nervous system. Advanced Drug Delivery Reviews 2011, 64: 701-705. PMID: 22210134, PMCID: PMC3323692, DOI: 10.1016/j.addr.2011.12.006.Peer-Reviewed Original ResearchBiodegradable poly(amine-co-ester) terpolymers for targeted gene delivery
Zhou J, Liu J, Cheng CJ, Patel TR, Weller CE, Piepmeier JM, Jiang Z, Saltzman WM. Biodegradable poly(amine-co-ester) terpolymers for targeted gene delivery. Nature Materials 2011, 11: 82-90. PMID: 22138789, PMCID: PMC4180913, DOI: 10.1038/nmat3187.Peer-Reviewed Original ResearchConceptsGene deliveryNon-viral gene deliveryEfficient gene deliveryGene delivery abilityTargeted gene deliveryHighest molecular weight terpolymerDelivery abilityTargeted deliveryLipofectamine 2000Dialkyl diesterVivo applicationsPolycationic vectorsSpecific ring sizesTRAIL geneHigh efficiencyCharge densityLow charge densityDeliveryPolyethylenimineMinimal toxicityEfficiencyHydrophobicityLactone contentDensityApplications
2010
Phase III randomized trial of CED of IL13-PE38QQR vs Gliadel wafers for recurrent glioblastoma†
Kunwar S, Chang S, Westphal M, Vogelbaum M, Sampson J, Barnett G, Shaffrey M, Ram Z, Piepmeier J, Prados M, Croteau D, Pedain C, Leland P, Husain SR, Joshi BH, Puri RK, Group F. Phase III randomized trial of CED of IL13-PE38QQR vs Gliadel wafers for recurrent glioblastoma†. Neuro-Oncology 2010, 12: 871-881. PMID: 20511192, PMCID: PMC2940677, DOI: 10.1093/neuonc/nop054.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAgedAntineoplastic AgentsBrain NeoplasmsCarmustineCatheters, IndwellingConvectionDecanoic AcidsDrug Administration RoutesExotoxinsFemaleGlioblastomaHumansInterleukin-13Kaplan-Meier EstimateMagnetic Resonance ImagingMaleMiddle AgedNeoplasm Recurrence, LocalPolyestersRecombinant Fusion ProteinsYoung AdultConceptsConvection-enhanced deliveryCintredekin besudotoxGliadel wafersMedian survivalTumor resectionGlioblastoma multiformeEfficacy-evaluable populationAdverse event profileHealth-related qualityPhase III evaluationTime of randomizationEvaluable populationTertiary endpointsPrimary endpointAdult patientsBaseline characteristicsFirst recurrenceOverall survivalPulmonary embolismActive comparatorTreatment armsIL13-PE38QQRIntraparenchymal catheterSurvival differencesGBM patients
2009
Anaplastic oligoastrocytoma in Turcot syndrome
Baehring J, Hui P, Piepmeier J, Bannykh SI. Anaplastic oligoastrocytoma in Turcot syndrome. Journal Of Neuro-Oncology 2009, 95: 293-298. PMID: 19495563, DOI: 10.1007/s11060-009-9928-y.Peer-Reviewed Original ResearchMeSH KeywordsAdaptor Proteins, Signal TransducingAdenosine TriphosphatasesAgedAstrocytomaColorectal Neoplasms, Hereditary NonpolyposisDNA Repair EnzymesDNA, NeoplasmDNA-Binding ProteinsFemaleHumansImmunoenzyme TechniquesMagnetic Resonance ImagingMismatch Repair Endonuclease PMS2MutL Protein Homolog 1MutS Homolog 2 ProteinNuclear ProteinsPedigreePolymerase Chain ReactionConceptsHereditary non-polyposis colorectal cancerTurcot syndromeAnaplastic oligoastrocytomaNon-polyposis colorectal cancerYear old womanHandful of casesColorectal cancerLarge bowelDNA mismatch repair systemOlder womenBrain tumorsTumor DNABody sitesFamilial clusteringGermline mutationsRare variantsSyndromeOligoastrocytomasCancerMismatch repair systemChance occurrenceDetailed molecular dataBowelPathogenesisTumorsThe future of neuro-oncology
Piepmeier JM. The future of neuro-oncology. Acta Neurochirurgica 2009, 151: 1343. PMID: 19639245, DOI: 10.1007/s00701-009-0471-6.Peer-Reviewed Original ResearchPrimary, non-exophytic, optic nerve germ cell tumors
DiLuna ML, Two AM, Levy GH, Patel T, Huttner AJ, Duncan CC, Piepmeier JM. Primary, non-exophytic, optic nerve germ cell tumors. Journal Of Neuro-Oncology 2009, 95: 437-443. PMID: 19554263, DOI: 10.1007/s11060-009-9941-1.Peer-Reviewed Original ResearchConceptsGerm cell tumorsOptic chiasmatic gliomasMalignant mixed germ cell tumorMixed germ cell tumorOptic chiasmCell tumorsOptic chiasm tumorAdrenal axis dysfunctionSub-frontal approachChiasm gliomaChiasmatic gliomasAxis dysfunctionBiopsy confirmationProgressive symptomsVisual lossCase seriesFirst patientTreatment regimensPterional craniotomyDiabetes insipidusTissue diagnosisTissue biopsiesTumorsPatientsChiasmCurrent concepts in the evaluation and management of WHO grade II gliomas
Piepmeier JM. Current concepts in the evaluation and management of WHO grade II gliomas. Journal Of Neuro-Oncology 2009, 92: 253-259. PMID: 19357953, DOI: 10.1007/s11060-009-9870-z.Peer-Reviewed Original ResearchConceptsHigh-grade lesionsGrade II gliomasRandomized clinical trialsLow-grade lesionsAdditional genetic mutationsAdjuvant treatmentAppropriate therapyClinical trialsClinical reportsFatal diseaseLesionsUnique lesionGenetic mutationsCurrent conceptsContinued investigationGliomasRecent findingsSelection criteriaPatientsTherapyTumorsDiseaseTrialsPrefaces
Andrews DW, Yu C, Gutin PH, Piepmeier JM. Prefaces. Neurosurgery 2009, 64: a2-a6. PMID: 19165070, DOI: 10.1227/01.neu.0000312702.38535.d4.Peer-Reviewed Original Research
2008
Intracranial benign fibrous histiocytomas: a case report and review
Moliterno JA, Sood S, Zambrano E, Kim JH, Piepmeier JM, Baehring JM. Intracranial benign fibrous histiocytomas: a case report and review. Journal Of Neuro-Oncology 2008, 92: 203-209. PMID: 19030779, DOI: 10.1007/s11060-008-9743-x.Peer-Reviewed Original Research
2007
Direct Intracerebral Delivery of Cintredekin Besudotox (IL13-PE38QQR) in Recurrent Malignant Glioma: A Report by the Cintredekin Besudotox Intraparenchymal Study Group
Kunwar S, Prados MD, Chang SM, Berger MS, Lang FF, Piepmeier JM, Sampson JH, Ram Z, Gutin PH, Gibbons RD, Aldape KD, Croteau DJ, Sherman JW, Puri RK. Direct Intracerebral Delivery of Cintredekin Besudotox (IL13-PE38QQR) in Recurrent Malignant Glioma: A Report by the Cintredekin Besudotox Intraparenchymal Study Group. Journal Of Clinical Oncology 2007, 25: 837-844. PMID: 17327604, DOI: 10.1200/jco.2006.08.1117.Peer-Reviewed Original ResearchConceptsConvection-enhanced deliveryIntracerebral convection-enhanced deliveryCintredekin besudotoxRecurrent malignant gliomaMalignant gliomasGlioblastoma multiformeMedian survivalCatheter placementTumor resectionInfusion durationProcedure-related adverse eventsFavorable risk-benefit profilePhase I clinical studyBetter drug distributionDirect intracerebral deliveryOptimal drug distributionOverall median survivalPortion of patientsRisk-benefit profileDevastating brain tumorDrug distributionAdverse eventsHigh tissue concentrationsIntracerebral deliveryTumor necrosis
2006
New methods for direct delivery of chemotherapy for treating brain tumors.
Sawyer AJ, Piepmeier JM, Saltzman WM. New methods for direct delivery of chemotherapy for treating brain tumors. The Yale Journal Of Biology And Medicine 2006, 79: 141-52. PMID: 17940624, PMCID: PMC1994797.Peer-Reviewed Original ResearchConceptsConvection-enhanced deliveryBrain tumorsPrimary malignant brain tumorLocal deliveryBlood-brain barrierMalignant brain tumorsStandard chemotherapeutic drugsBrain cancer treatmentAnti-cancer therapyMedian survivalInfusion siteSevere formMalignant cellsNew delivery strategiesChemotherapy drugsChemotherapyDiagnostic imagingTumorsChemotherapeutic drugsCancer treatmentDrugsInvasive cellsSource of drugsDelivery strategiesBrainThe Interactions of Polarographic Measurements of Oxygen Tension and Histological Grade in Human Glioma
Lally BE, Rockwell S, Fischer DB, Collingridge DR, Piepmeier JM, Knisely JP. The Interactions of Polarographic Measurements of Oxygen Tension and Histological Grade in Human Glioma. The Cancer Journal 2006, 12: 461-466. PMID: 17207315, DOI: 10.1097/00130404-200611000-00005.Peer-Reviewed Original ResearchConceptsHistological gradeHigh-grade gliomasLow-grade gliomasTumor oxygen tensionUnivariate analysisOxygen tensionGrade gliomasSignificant independent prognostic indicatorExtent of surgeryType of anesthesiaIndependent prognostic indicatorEppendorf pO2 histographTissue oxygen tensionNormal brain tissueImplications of hypoxiaOverall survivalProspective trialPatient ageEntire cohortPrognostic indicatorPatient genderPoor survivalMedian pO2PatientsPO2 histograph