2020
A prospective multicenter study of laser ablation for drug resistant epilepsy – One year outcomes
Landazuri P, Shih J, Leuthardt E, Ben-Haim S, Neimat J, Tovar-Spinoza Z, Chiang V, Spencer D, Sun D, Fecci P, Baumgartner J. A prospective multicenter study of laser ablation for drug resistant epilepsy – One year outcomes. Epilepsy Research 2020, 167: 106473. PMID: 33045664, DOI: 10.1016/j.eplepsyres.2020.106473.Peer-Reviewed Original ResearchConceptsMesial temporal lobe epilepsyLaser interstitial thermal therapySeizure outcomeLife scoresPotential clinical characteristicsMulti-center registryDrug-resistant epilepsyProspective multicenter studyEffective treatment optionTemporal lobe epilepsyFocal cortical dysplasiaSocial functioning scoresInterstitial thermal therapyEngel IPain scoresAdverse eventsClinical characteristicsSeizure worryEpilepsy typeResistant epilepsySurgical treatmentShorter hospitalizationCortical dysplasiaHypothalamic hamartomaLobe epilepsy
2019
A Proposed Grading Scale for Predicting Outcomes After Stereotactic Radiosurgery for Dural Arteriovenous Fistulas
Mohammed N, Hung YC, Chen CJ, Xu Z, Schlesinger D, Kano H, Chiang V, Hess J, Lee J, Mathieu D, Kaufmann AM, Grills IS, Cifarelli CP, Vargo JA, Chytka T, Janouskova L, Feliciano CE, Mercado RR, Lunsford LD, Sheehan JP. A Proposed Grading Scale for Predicting Outcomes After Stereotactic Radiosurgery for Dural Arteriovenous Fistulas. Neurosurgery 2019, 87: 247-255. PMID: 31584074, PMCID: PMC7528658, DOI: 10.1093/neuros/nyz401.Peer-Reviewed Original ResearchConceptsDural arteriovenous fistulaCranial dural arteriovenous fistulasCortical venous refluxFavorable outcomeStereotactic radiosurgeryGrading systemIntracerebral hemorrhageArteriovenous fistulaScoring systemGrading scaleKaplan-Meier analysisPrior intracerebral hemorrhageClass II patientsLogistic regression analysisPractical grading systemDAVF obliterationVenous refluxII patientsClinical parametersSinus locationPredicting OutcomeSystematic reviewClass IIIPatientsROC analysis
2018
Estimating survival for renal cell carcinoma patients with brain metastases: an update of the Renal Graded Prognostic Assessment tool
Sperduto PW, Deegan BJ, Li J, Jethwa KR, Brown PD, Lockney N, Beal K, Rana NG, Attia A, Tseng CL, Sahgal A, Shanley R, Sperduto WA, Lou E, Zahra A, Buatti JM, Yu JB, Chiang V, Molitoris JK, Masucci L, Roberge D, Shi DD, Shih HA, Olson A, Kirkpatrick JP, Braunstein S, Sneed P, Mehta MP. Estimating survival for renal cell carcinoma patients with brain metastases: an update of the Renal Graded Prognostic Assessment tool. Neuro-Oncology 2018, 20: 1652-1660. PMID: 30418657, PMCID: PMC6231200, DOI: 10.1093/neuonc/noy099.Peer-Reviewed Original ResearchConceptsPrognostic assessment toolsBrain metastasesRenal cell carcinomaMedian survivalPrognostic factorsAdditional significant prognostic factorsRenal cell carcinoma patientsRetrospective institutional review boardNew brain metastasesKarnofsky performance statusOverall median survivalCell carcinoma patientsSignificant prognostic factorsFuture clinical trialsClinical decision makingInstitutional review boardAssessment toolPerformance statusCommon complicationExtracranial metastasesHazard ratioCarcinoma patientsContemporary cohortRCC patientsWorse prognosisEffect of Targeted Therapies on Prognostic Factors, Patterns of Care, and Survival in Patients With Renal Cell Carcinoma and Brain Metastases
Sperduto PW, Deegan BJ, Li J, Jethwa KR, Brown PD, Lockney N, Beal K, Rana NG, Attia A, Tseng CL, Sahgal A, Shanley R, Sperduto WA, Lou E, Zahra A, Buatti JM, Yu JB, Chiang V, Molitoris JK, Masucci L, Roberge D, Shi DD, Shih HA, Olson A, Kirkpatrick JP, Braunstein S, Sneed P, Mehta MP. Effect of Targeted Therapies on Prognostic Factors, Patterns of Care, and Survival in Patients With Renal Cell Carcinoma and Brain Metastases. International Journal Of Radiation Oncology • Biology • Physics 2018, 101: 845-853. PMID: 29976497, PMCID: PMC6925530, DOI: 10.1016/j.ijrobp.2018.04.006.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAgedAged, 80 and overAngiogenesis InhibitorsAntineoplastic AgentsBrain NeoplasmsCarcinoma, Renal CellCause of DeathCranial IrradiationCytokinesFemaleHemoglobinsHumansImmunotherapyKarnofsky Performance StatusKidney NeoplasmsMaleMiddle AgedMultivariate AnalysisPrognosisRadiosurgeryRetrospective StudiesYoung AdultConceptsPatterns of careNew brain metastasesBrain metastasesLarge contemporary cohortPrognostic factorsMedian survivalContemporary cohortRCC patientsDiagnosis of BMWhole-brain radiation therapyRenal cell carcinoma patientsRetrospective institutional review boardBrain metastasis therapySystemic treatment optionsAdditional prognostic factorsCell carcinoma patientsRenal cell carcinomaInstitutional review boardNonneurologic causesCarcinoma patientsImproved survivalNeurologic causesMultivariable analysisClinical parametersPresent cohort
2017
Radiosurgery for Brain Metastases: Changing Practice Patterns and Disparities in the United States.
Kann BH, Park HS, Johnson SB, Chiang VL, Yu JB. Radiosurgery for Brain Metastases: Changing Practice Patterns and Disparities in the United States. Journal Of The National Comprehensive Cancer Network 2017, 15: 1494-1502. PMID: 29223987, DOI: 10.6004/jnccn.2017.7003.Peer-Reviewed Original ResearchConceptsNational Cancer Data BaseStereotactic radiosurgeryBrain metastasesPractice patternsBrain radiotherapyMetastatic diseaseMetastatic non-small cell lung cancerNon-small cell lung cancerNon-SR patientsUpfront brain radiotherapyNational practice patternsProportion of patientsKaplan-Meier methodCell lung cancerProportion of facilitiesQuality of lifeChi-square testActuarial survivalIntracranial controlNeurocognitive toxicityNonprivate insuranceSRS useNCDB analysisDiagnosis yearMultivariable analysisStereotactic radiosurgery of early melanoma brain metastases after initiation of anti-CTLA-4 treatment is associated with improved intracranial control
An Y, Jiang W, Kim BYS, Qian JM, Tang C, Fang P, Logan J, D'Souza NM, Haydu LE, Wang XA, Hess KR, Kluger H, Glitza IC, Mahajan A, Welsh JW, Lin SH, Yu JB, Davies MA, Hwu P, Sulman EP, Brown PD, Chiang VLS, Li J. Stereotactic radiosurgery of early melanoma brain metastases after initiation of anti-CTLA-4 treatment is associated with improved intracranial control. Radiotherapy And Oncology 2017, 125: 80-88. PMID: 28916225, DOI: 10.1016/j.radonc.2017.08.009.Peer-Reviewed Original ResearchConceptsIntracranial disease controlNew brain metastasesIntracranial controlStereotactic radiosurgeryBrain metastasesOverall survivalDisease controlLymphocyte countMulti-institutional retrospective analysisYale-New Haven HospitalMD Anderson cohortMelanoma brain metastasesAbsolute lymphocyte countAntitumor immune responseImmune checkpoint blockadeMetastatic melanoma patientsComplete blood countTumor-specific antigensIndependent validation cohortMulti-institutional studyIpilimumab therapyMedian followLast doseCheckpoint blockadeIntracranial recurrenceCumulative Intracranial Tumor Volume Augments the Prognostic Value of Diagnosis-Specific Graded Prognostic Assessment Model for Survival in Patients with Melanoma Cerebral Metastases
Hirshman BR, Wilson BR, Ali MA, Schupper AJ, Proudfoot JA, Goetsch SJ, Carter BS, Sinclair G, Bartek J, Chiang V, Fogarty G, Hong A, Chen CC. Cumulative Intracranial Tumor Volume Augments the Prognostic Value of Diagnosis-Specific Graded Prognostic Assessment Model for Survival in Patients with Melanoma Cerebral Metastases. Neurosurgery 2017, 83: 237-244. PMID: 28973506, DOI: 10.1093/neuros/nyx380.Peer-Reviewed Original ResearchConceptsCumulative intracranial tumor volumeIntracranial tumor volumeMelanoma brain metastasesBrain metastasesPrognostic valueDS-GPATumor volumeStereotactic radiosurgeryIndependent cohortKey prognostic variablesPrognostic assessment modelPrognostic assessment scaleKarnofsky performance statusNet reclassification indexCerebral metastasesPerformance statusMelanoma patientsPrognostic utilityIntracranial metastasesReclassification indexPrognostic accuracyPrognostic scalesPrognostic variablesPatientsMelanoma cohortImproving the Prognostic Value of Disease-Specific Graded Prognostic Assessment Model for Renal Cell Carcinoma by Incorporation of Cumulative Intracranial Tumor Volume
Ali MA, Hirshman BR, Wilson B, Schupper AJ, Joshi R, Proudfoot JA, Goetsch SJ, Alksne JF, Ott K, Aiyama H, Nagano O, Carter BS, Chiang V, Serizawa T, Yamamoto M, Chen CC. Improving the Prognostic Value of Disease-Specific Graded Prognostic Assessment Model for Renal Cell Carcinoma by Incorporation of Cumulative Intracranial Tumor Volume. World Neurosurgery 2017, 108: 151-156. PMID: 28754641, PMCID: PMC5705321, DOI: 10.1016/j.wneu.2017.07.109.Peer-Reviewed Original ResearchConceptsCumulative intracranial tumor volumeNumber of BMKarnofsky performance scoreNet reclassification indexIntracranial tumor volumePrognostic assessment modelBrain metastasesPrognostic valueStereotactic radiosurgeryLogistic regression modelsTumor volumeMultivariable Cox proportional hazards modelsRenal cell carcinoma patientsUnivariable logistic regression modelsMultivariable logistic regression modelCox proportional hazards modelNew brain metastasesRCC brain metastasesCell carcinoma patientsImportant prognostic variablesRenal cell carcinomaProportional hazards modelRCC patient survivalBM patientsDS-GPA
2015
Post-radiosurgical edema associated with parasagittal and parafalcine meningiomas: a multicenter study
Sheehan JP, Cohen-Inbar O, Ruangkanchanasetr R, Bulent Omay S, Hess J, Chiang V, Iorio-Morin C, Alonso-Basanta M, Mathieu D, Grills IS, Lee JY, Lee CC, Dade Lunsford L. Post-radiosurgical edema associated with parasagittal and parafalcine meningiomas: a multicenter study. Journal Of Neuro-Oncology 2015, 125: 317-324. PMID: 26329323, DOI: 10.1007/s11060-015-1911-1.Peer-Reviewed Original ResearchConceptsStereotactic radiosurgeryParafalcine meningiomaTumor controlTumor volumeInternational Gamma Knife Research FoundationPost-surgical residual tumorAdjuvant stereotactic radiosurgeryRetrospective multicenter reviewTumor volume controlUpfront stereotactic radiosurgeryVenous sinus compressionMedian marginal doseMedian tumor volumeSubset of patientsLong-term followPeri-tumoral edemaExtent of edemaVenous sinus invasionMedian followMarginal doseMulticenter reviewPrognostic factorsSinus compressionResidual tumorMulticenter studyCharacterization of PD-L1 Expression and Associated T-cell Infiltrates in Metastatic Melanoma Samples from Variable Anatomic Sites
Kluger HM, Zito CR, Barr ML, Baine MK, Chiang VL, Sznol M, Rimm DL, Chen L, Jilaveanu LB. Characterization of PD-L1 Expression and Associated T-cell Infiltrates in Metastatic Melanoma Samples from Variable Anatomic Sites. Clinical Cancer Research 2015, 21: 3052-3060. PMID: 25788491, PMCID: PMC4490112, DOI: 10.1158/1078-0432.ccr-14-3073.Peer-Reviewed Original ResearchConceptsPD-L1 expressionT-cell contentPD-1/PD-L1 inhibitorsHigher T-cell contentT-cell infiltratesPD-L1 inhibitorsAnatomic sitesBrain metastasesMetastatic melanomaTissue microarrayHigh PD-L1 expressionLess PD-L1 expressionLow PD-L1 expressionTumor PD-L1 expressionHigher TIL contentImproved overall survivalT cell infiltrationLess T cellsMetastatic melanoma samplesExtracerebral metastasesCerebral metastasesOverall survivalDermal metastasesImproved survivalPD-L1Gamma Knife radiosurgery for facial nerve schwannomas: a multicenter study.
Sheehan JP, Kano H, Xu Z, Chiang V, Mathieu D, Chao S, Akpinar B, Lee JY, Yu JB, Hess J, Wu HM, Chung WY, Pierce J, Missios S, Kondziolka D, Alonso-Basanta M, Barnett GH, Lunsford LD. Gamma Knife radiosurgery for facial nerve schwannomas: a multicenter study. Journal Of Neurosurgery 2015, 123: 387-94. PMID: 25955875, DOI: 10.3171/2014.11.jns141160.Peer-Reviewed Original ResearchConceptsFacial nerve schwannomaFacial nerve functionNorth American Gamma Knife ConsortiumHouse-Brackmann scoreStereotactic radiosurgeryNerve functionTumor controlNeurological preservationMargin doseMedian ageNerve schwannomaPreoperative facial nerve functionNormal facial nerve functionResidual/recurrent tumorActuarial tumor controlEffective salvage treatmentMean margin dosePermanent neurological symptomsTumor margin doseUpfront stereotactic radiosurgeryPatients' median ageMean tumor volumeTreatment of choiceGamma knife radiosurgeryRare intracranial tumorsGamma Knife radiosurgery for posterior fossa meningiomas: a multicenter study.
Sheehan JP, Starke RM, Kano H, Barnett GH, Mathieu D, Chiang V, Yu JB, Hess J, McBride HL, Honea N, Nakaji P, Lee JY, Rahmathulla G, Evanoff WA, Alonso-Basanta M, Lunsford LD. Gamma Knife radiosurgery for posterior fossa meningiomas: a multicenter study. Journal Of Neurosurgery 2015, 122: 1479-89. PMID: 25859812, DOI: 10.3171/2014.10.jns14139.Peer-Reviewed Original ResearchConceptsPosterior fossa meningiomasTumor volumeStereotactic radiosurgeryTumor controlRadiation therapyNorth American Gamma Knife ConsortiumTumor progressionActuarial tumor controlMedian margin doseMedian patient agePrior radiation therapyMean tumor volumeGamma knife radiosurgerySmaller tumor volumeNeurological preservationMargin dosePrior resectionClinical stabilityNeurological declinePatient ageShunt placementRecurrent tumorsClinical entityMulticenter studyKnife radiosurgery
2014
Stereotactic radiosurgery of petroclival meningiomas: a multicenter study
Starke R, Kano H, Ding D, Nakaji P, Barnett GH, Mathieu D, Chiang V, Yu JB, Hess J, McBride HL, Honea N, Lee JY, Rahmathulla G, Evanoff WA, Alonso-Basanta M, Lunsford LD, Sheehan JP. Stereotactic radiosurgery of petroclival meningiomas: a multicenter study. Journal Of Neuro-Oncology 2014, 119: 169-176. PMID: 24821284, DOI: 10.1007/s11060-014-1470-x.Peer-Reviewed Original ResearchConceptsGamma knife radiosurgeryPetroclival meningiomasMulticenter studyFavorable outcomeTumor volumeActuarial progression-free survival ratesNorth American Gamma Knife ConsortiumProgression-free survival ratesFree survival ratePrimary treatment modalityProgression of symptomsSmaller tumor volumeComplete microsurgical resectionNeurological preservationUpfront radiosurgeryPrior radiotherapyMost patientsMicrosurgical resectionSignificant morbidityNeurological functionMaximal doseTumor controlTreatment modalitiesKnife radiosurgeryFemale genderGamma Knife radiosurgery for sellar and parasellar meningiomas: a multicenter study.
Sheehan JP, Starke RM, Kano H, Kaufmann AM, Mathieu D, Zeiler FA, West M, Chao ST, Varma G, Chiang VL, Yu JB, McBride HL, Nakaji P, Youssef E, Honea N, Rush S, Kondziolka D, Lee JY, Bailey RL, Kunwar S, Petti P, Lunsford LD. Gamma Knife radiosurgery for sellar and parasellar meningiomas: a multicenter study. Journal Of Neurosurgery 2014, 120: 1268-77. PMID: 24678777, DOI: 10.3171/2014.2.jns13139.Peer-Reviewed Original ResearchConceptsGamma knife radiosurgeryPrior radiation therapyParasellar meningiomasSellar meningiomasKnife radiosurgeryRadiation therapyPrior surgeryMulticenter studyTumor controlTumor volumeActuarial progression-free survival ratesNorth American Gamma Knife ConsortiumTumor progressionProgression-free survival ratesCox multivariate regression analysisTumor margin doseNew neurological deficitsCranial nerve deficitsPrimary treatment modalityKaplan-Meier analysisCranial nerves VLarger tumor volumeConventional radiation therapyMonths of imagingMultivariate regression analysis
2013
Efficacy and Safety of Higher Dose Stereotactic Radiosurgery for Functional Pituitary Adenomas: A Preliminary Report
Grant RA, Whicker M, Lleva R, Knisely JP, Inzucchi SE, Chiang VL. Efficacy and Safety of Higher Dose Stereotactic Radiosurgery for Functional Pituitary Adenomas: A Preliminary Report. World Neurosurgery 2013, 82: 195-201. PMID: 23385448, DOI: 10.1016/j.wneu.2013.01.127.Peer-Reviewed Original ResearchMeSH KeywordsAdenomaAdolescentAdultAgedDose-Response Relationship, RadiationFemaleFollow-Up StudiesHumansHypopituitarismKaplan-Meier EstimateMagnetic Resonance ImagingMaleMiddle AgedNeoplasm Recurrence, LocalOptic NervePituitary HormonesPituitary NeoplasmsPostoperative ComplicationsProspective StudiesRadiosurgeryRetrospective StudiesSurvival AnalysisTreatment OutcomeYoung AdultConceptsSingle-fraction stereotactic radiosurgeryPituitary adenomasEndocrine remissionMarginal dosesStereotactic radiosurgeryHigh-dose stereotactic radiosurgeryCommon adjuvant therapyHigher marginal doseNew endocrine deficienciesOptic nerve pallorPost-SRS hypopituitarismRadiation-induced hypopituitarismSecretory pituitary adenomasHigh-dose treatmentFunctional pituitary adenomasRadiation-induced sequelaeActive pituitary adenomasFraction stereotactic radiosurgeryHormonal normalizationHormonal remissionAdjuvant therapyCranial neuropathiesMarginal doseEndocrine deficienciesSurgical resection
2008
Gamma Knife surgery for the treatment of melanoma metastases: the effect of intratumoral hemorrhage on survival.
Redmond AJ, DiLuna ML, Hebert R, Moliterno JA, Desai R, Knisely JP, Chiang VL. Gamma Knife surgery for the treatment of melanoma metastases: the effect of intratumoral hemorrhage on survival. Journal Of Neurosurgery 2008, 109 Suppl: 99-105. PMID: 19123895, DOI: 10.3171/jns/2008/109/12/s16.Peer-Reviewed Original ResearchConceptsGamma Knife surgeryMelanoma metastasesIntratumoral bleedingTime of GKSWhole-brain radiation therapyPost-GKS hemorrhageMelanoma brain metastasesRate of hemorrhageConnecticut Tumor RegistryMalignant melanoma metastaticSurvival of patientsTotal tumor volumeTreatment-specific factorsMelanoma metastaticPosttreatment bleedingAntithrombotic medicationBrain metastasesMetastasis locationOverall survivalSolitary metastasisTumor RegistryTumor burdenWorse prognosisIntracranial metastasesPatient survival