2021
Minimal uterine serous carcinoma and endometrial polyp: a close clinicopathological relationship
Assem H, Rottmann D, Finkelstein A, Wang M, Ratner E, Santin AD, Buza N, Hui P. Minimal uterine serous carcinoma and endometrial polyp: a close clinicopathological relationship. Human Pathology 2021, 118: 1-8. PMID: 34508766, DOI: 10.1016/j.humpath.2021.09.001.Peer-Reviewed Original ResearchConceptsMinimal uterine serous carcinomaEndometrial polypsUterine serous carcinomaSerous carcinomaHigh stage patientsLow stage patientsPelvic washing cytologyAdvanced stage diseaseEndometrial serous carcinomaHigher stage diseaseLower tumor stageClinical outcome assessmentClose topographic relationshipBackground endometriumExtrauterine diseaseExtrauterine spreadStage diseaseExcellent prognosisLymphovascular invasionClinicopathological relationshipWashing cytologyTumor stageHigh riskPatientsLarge seriesDHES0815A, a novel antibody-drug conjugate targeting HER2/neu, is highly active against uterine serous carcinomas in vitro and in vivo
Tymon-Rosario J, Bonazzoli E, Bellone S, Manzano A, Pelligra S, Guglielmi A, Gnutti B, Nagarkatti N, Zeybek B, Manara P, Zammataro L, Harold J, Mauricio D, Buza N, Hui P, Altwerger G, Menderes G, Ratner E, Clark M, Andikyan V, Huang GS, Silasi DA, Azodi M, Schwartz PE, Santin AD. DHES0815A, a novel antibody-drug conjugate targeting HER2/neu, is highly active against uterine serous carcinomas in vitro and in vivo. Gynecologic Oncology 2021, 163: 334-341. PMID: 34452746, PMCID: PMC8722447, DOI: 10.1016/j.ygyno.2021.08.014.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedAged, 80 and overAntibodies, Monoclonal, HumanizedBenzodiazepinesBystander EffectCell Line, TumorCystadenocarcinoma, SerousDrug Resistance, NeoplasmFemaleHumansImmunoconjugatesMiddle AgedPrimary Cell CultureReceptor, ErbB-2TrastuzumabUterine NeoplasmsXenograft Model Antitumor AssaysConceptsHER2/neuPrimary USC cell linesUSC cell linesUterine serous carcinomaSerous carcinomaHER2/Cell linesBystander killingHER2/neu protein expressionHER2/neu overexpressionProtein expressionNovel treatment optionsAggressive histologic variantNeu protein expressionHER2 protein expressionC-erbB2 gene amplificationSignificant bystander killingUSC xenograftsEndometrial cancerNegative tumorsPoor prognosisPositive tumorsTreatment optionsPreclinical activityHistologic variantsReproducibility of scoring criteria for HER2 immunohistochemistry in endometrial serous carcinoma: a multi-institutional interobserver agreement study
Buza N, Euscher ED, Matias-Guiu X, McHenry A, Oliva E, Ordulu Z, Parra-Herran C, Rottmann D, Turner BM, Wong S, Hui P. Reproducibility of scoring criteria for HER2 immunohistochemistry in endometrial serous carcinoma: a multi-institutional interobserver agreement study. Modern Pathology 2021, 34: 1194-1202. PMID: 33536574, DOI: 10.1038/s41379-021-00746-5.Peer-Reviewed Original ResearchConceptsEndometrial serous carcinomaHER2 scoring criteriaSerous carcinomaHER2 scoreGynecologic pathologistsAnti-human epidermal growth factor receptor 2 (HER2) therapyRecent successful clinical trialsInterobserver disagreementCombination of HER2Successful clinical trialsHER2 gene amplificationInterobserver agreement studyScoring criteriaInterobserver agreement ratesOverall survivalEndometrial cancerPathologic studiesHER2 statusClinical trialsGastric carcinomaHER2 testingHER2 immunohistochemistryAdvanced stageCarcinomaScoring system
2020
Does Specimen Type Have an Impact on HER2 Status in Endometrial Serous Carcinoma? Discordant HER2 Status of Paired Endometrial Biopsy and Hysterectomy Specimens in the Presence of Frequent Intratumoral Heterogeneity
Rottmann D, Assem H, Matsumoto N, Wong S, Hui P, Buza N. Does Specimen Type Have an Impact on HER2 Status in Endometrial Serous Carcinoma? Discordant HER2 Status of Paired Endometrial Biopsy and Hysterectomy Specimens in the Presence of Frequent Intratumoral Heterogeneity. International Journal Of Gynecological Pathology 2020, 40: 263-271. PMID: 32897955, DOI: 10.1097/pgp.0000000000000690.Peer-Reviewed Original ResearchConceptsEndometrial serous carcinomaDiscordant HER2 statusHER2 immunohistochemical scoresHER2 protein expressionSerous carcinomaHER2 statusEndometrial biopsies/curettingsImmunohistochemical scoreProtein expressionHER2 testingIntratumoral heterogeneityEndometrial biopsy/curettageProlonged progression-free survivalHuman epidermal growth factor receptor 2Epidermal growth factor receptor 2HER2 testing algorithmProgression-free survivalGrowth factor receptor 2HER2-negative tumorsFinal study cohortHER2-positive tumorsRecent clinical trialsSpecimen typesFactor receptor 2Optimal specimen typesHuman epidermal growth factor 2 (HER2) in early stage uterine serous carcinoma: A multi-institutional cohort study
Erickson BK, Najjar O, Damast S, Blakaj A, Tymon-Rosario J, Shahi M, Santin A, Klein M, Dolan M, Cimino-Mathews A, Buza N, Ferriss JS, Stone RL, Khalifa M, Fader AN. Human epidermal growth factor 2 (HER2) in early stage uterine serous carcinoma: A multi-institutional cohort study. Gynecologic Oncology 2020, 159: 17-22. PMID: 32709539, PMCID: PMC7541557, DOI: 10.1016/j.ygyno.2020.07.016.Peer-Reviewed Original ResearchMeSH KeywordsAgedAntineoplastic Combined Chemotherapy ProtocolsBiomarkers, TumorChemoradiotherapy, AdjuvantCystadenocarcinoma, SerousFemaleFollow-Up StudiesHumansHysterectomyImmunohistochemistryMiddle AgedNeoplasm InvasivenessNeoplasm Recurrence, LocalNeoplasm StagingPrognosisProgression-Free SurvivalReceptor, ErbB-2Retrospective StudiesRisk AssessmentUnited StatesUterine NeoplasmsUterusConceptsHuman epidermal growth factor 2Uterine serous carcinomaHER2-positive tumorsEarly-stage diseaseOverall survivalSerous carcinomaCohort studyHER2 positivityPositive tumorsEarly stage uterine serous carcinomaLymph-vascular space invasionRecurrent uterine serous carcinomaMulti-institutional cohort studyHuman epidermal growth factor receptor 2Multi-center cohort studyEpidermal growth factor receptor 2Epidermal growth factor 2HER2-positive cohortGrowth factor receptor 2HER2-negative tumorsEquivocal IHC resultsFactor receptor 2Inferior PFSAdjuvant therapyGrowth factor 2Molecular and clinicopathologic characterization of intravenous leiomyomatosis
Ordulu Z, Chai H, Peng G, McDonald AG, De Nictolis M, Garcia-Fernandez E, Hardisson D, Prat J, Li P, Hui P, Oliva E, Buza N. Molecular and clinicopathologic characterization of intravenous leiomyomatosis. Modern Pathology 2020, 33: 1844-1860. PMID: 32341498, PMCID: PMC7483566, DOI: 10.1038/s41379-020-0546-8.Peer-Reviewed Original ResearchConceptsIntravenous leiomyomatosisAggressive clinical behaviorClinical behaviorArray comparative genomic hybridizationCyclin D1Uterine smooth muscle tumorsSmooth muscle tumorsSmooth muscle proliferationRecurrent chromosome alterationsCommon genetic alterationsFH immunohistochemistryClinicopathologic characterizationImmunohistochemical findingsMesenchymal tumorsMuscle tumorsBenign appearanceMuscle proliferationUterine leiomyomaGroup 1Group 3Nonneoplastic tissuesIndex scoreVascular morphologyProtein expressionComparative genomic hybridizationBilateral Signet-ring Stromal Tumor of the Ovary: A Case Report With Next-generation Sequencing Analysis and FOXL2 Mutation Testing
Chen PH, Hui P, Buza N. Bilateral Signet-ring Stromal Tumor of the Ovary: A Case Report With Next-generation Sequencing Analysis and FOXL2 Mutation Testing. International Journal Of Gynecological Pathology 2020, 39: 193-198. PMID: 30676431, DOI: 10.1097/pgp.0000000000000579.Peer-Reviewed Case Reports and Technical NotesConceptsSignet-ring stromal tumorStromal tumorsNext-generation sequencing analysisBilateral solid ovarian tumorsBilateral ovarian massesFOXL2 mutation testingSolid ovarian tumorSignet ring cell morphologySmooth muscle actinUnderlying genetic abnormalitiesPCR-Sanger sequencingNuclear beta-catenin expressionHandful of casesHeterogenous pathogenesisAbdominal distentionRectal bleedingTotal hysterectomyStromal neoplasmsOvarian massesOvarian tumorsCase reportBeta-catenin expressionSequencing analysisMuscle actinTumorsPhase II evaluation of nivolumab in the treatment of persistent or recurrent cervical cancer (NCT02257528/NRG-GY002)
Santin AD, Deng W, Frumovitz M, Buza N, Bellone S, Huh W, Khleif S, Lankes HA, Ratner ES, O'Cearbhaill RE, Jazaeri AA, Birrer M. Phase II evaluation of nivolumab in the treatment of persistent or recurrent cervical cancer (NCT02257528/NRG-GY002). Gynecologic Oncology 2020, 157: 161-166. PMID: 31924334, PMCID: PMC7127981, DOI: 10.1016/j.ygyno.2019.12.034.Peer-Reviewed Original ResearchConceptsTreatment-related adverse eventsRecurrent cervical cancerPD-L1 expressionPlatinum-based chemotherapyCervical cancerStable diseaseGrade 3 treatment-related adverse eventsGrade 4 treatment-related adverse eventsGrade 5 treatment-related adverse eventsECOG PS 0Prior systemic therapyRecurrent cervical carcinomaResponse/toxicitySingle-agent nivolumabSystemic chemotherapy regimenTolerability of nivolumabImmune checkpoint inhibitorsPercent of patientsAcceptable safety profilePhase II trialKey eligibility criteriaPhase II evaluationECOG PSNivolumab 3RECIST 1.1
2019
HER2 testing of gynecologic carcinosarcomas: tumor stratification for potential targeted therapy
Rottmann D, Snir OL, Wu X, Wong S, Hui P, Santin AD, Buza N. HER2 testing of gynecologic carcinosarcomas: tumor stratification for potential targeted therapy. Modern Pathology 2019, 33: 118-127. PMID: 31477811, DOI: 10.1038/s41379-019-0358-x.Peer-Reviewed Original ResearchConceptsEndometrial serous carcinomaHER2-positive tumorsSerous carcinomaSarcoma componentHER2 statusGynecologic carcinosarcomaHER2 expression/amplificationRecent phase II clinical trialPhase II clinical trialCarboplatin-paclitaxel chemotherapyEquivocal HER2 expressionProgression-free survivalAppropriate patient selectionExpression/amplificationFemale genital tractMembranous staining patternHER2 protein expressionHER2 immunohistochemical scoresUterine primaryDismal prognosisPatient selectionCarcinoma componentMixed carcinomasHER2 expressionClinical trials
2018
Minimal microsatellite shift in microsatellite instability high endometrial cancer: a significant pitfall in diagnostic interpretation
Wu X, Snir O, Rottmann D, Wong S, Buza N, Hui P. Minimal microsatellite shift in microsatellite instability high endometrial cancer: a significant pitfall in diagnostic interpretation. Modern Pathology 2018, 32: 650-658. PMID: 30443012, DOI: 10.1038/s41379-018-0179-3.Peer-Reviewed Original ResearchMeSH KeywordsAgedAged, 80 and overBiomarkers, TumorColorectal Neoplasms, Hereditary NonpolyposisDNA-Binding ProteinsEndometrial NeoplasmsFemaleGenetic LociGenetic Predisposition to DiseaseHumansImmunohistochemistryMicrosatellite InstabilityMiddle AgedMismatch Repair Endonuclease PMS2MutL Protein Homolog 1MutS Homolog 2 ProteinPhenotypePolymerase Chain ReactionPredictive Value of TestsReproducibility of ResultsConceptsEndometrial cancerMLH1/PMS2Endometrial carcinomaMSH6 lossMicrosatellite shiftCancer cohortMismatch repair deficiency testingMicrosatellite instability-high colorectal cancerEndometrial cancer cohortLoss of PMS2Clear cell carcinomaColorectal cancer cohortHigh colorectal cancerLynch syndrome familiesMSH2/MSH6PMS2 lossCell carcinomaColorectal cancerDeficiency testingSolid malignanciesColorectal carcinomaCarcinomaCancerIsolated lossMSH-6
2017
Ovarian Sertoli-Leydig cell tumors: a single institution experience and review of the literature.
Gressel G, Buza N, Pal L. Ovarian Sertoli-Leydig cell tumors: a single institution experience and review of the literature. European Journal Of Gynaecological Oncology 2017, 38: 214-220. PMID: 29953783.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAgedAged, 80 and overAntineoplastic Combined Chemotherapy ProtocolsChemotherapy, AdjuvantDisease-Free SurvivalFemaleHumansHyperandrogenismHysterectomyMiddle AgedNeoadjuvant TherapyNeoplasm GradingOvarian NeoplasmsOvariectomyPostmenopauseRetrospective StudiesSalpingectomySertoli-Leydig Cell TumorConceptsSertoli-Leydig cell tumorOvarian Sertoli-Leydig cell tumorPresent patient populationDisease-free survivalSingle institution experienceTertiary care institutionTime of diagnosisOnset of menopauseRisk of recurrenceSeries of casesAdjuvant chemotherapyMedian followPostmenopausal bleedingPostmenopausal patientsMedian ageMedian intervalClinical presentationDefinitive managementPathological findingsRetrospective reviewInstitution experiencePatient populationTreatment modalitiesCell tumorsTumor grade
2015
Diagnostic application of KRAS mutation testing in uterine microglandular proliferations
Hong W, Abi-Raad R, Alomari AK, Hui P, Buza N. Diagnostic application of KRAS mutation testing in uterine microglandular proliferations. Human Pathology 2015, 46: 1000-1005. PMID: 25997988, DOI: 10.1016/j.humpath.2015.03.010.Peer-Reviewed Original ResearchMeSH KeywordsAdenocarcinomaAdultAgedAged, 80 and overBiopsyCell ProliferationCervix UteriDiagnosis, DifferentialDNA Mutational AnalysisEndometrial HyperplasiaEndometrial NeoplasmsFemaleHumansMiddle AgedMutationPredictive Value of TestsProto-Oncogene ProteinsProto-Oncogene Proteins p21(ras)Ras ProteinsConceptsKRAS mutation analysisEndometrial adenocarcinomaMicroglandular hyperplasiaMicroglandular patternKRAS mutationsCareful morphological assessmentEndometrial mucinous carcinomaKRAS mutation testingCases of EMAMutation analysisFrequent KRAS mutationsElectronic medical recordsDifferential diagnostic toolHigh mitotic activityEndometrial biopsyImmunohistochemical workupUterine cervixMucinous carcinomaClinical historyDiagnostic challengeDiagnostic dilemmaGlandular proliferationMucinous lesionsMedical recordsEAC cases
2010
Inverse p16 and p63 Expression in Small Cell Carcinoma and High-Grade Urothelial Cell Carcinoma of the Urinary Bladder
Buza N, Cohen PJ, Pei Hui, Parkash V. Inverse p16 and p63 Expression in Small Cell Carcinoma and High-Grade Urothelial Cell Carcinoma of the Urinary Bladder. International Journal Of Surgical Pathology 2010, 18: 94-102. PMID: 20164052, DOI: 10.1177/1066896909359914.Peer-Reviewed Original Research