2021
Immunohistochemistry in gynecologic carcinomas: Practical update with diagnostic and clinical considerations based on the 2020 WHO classification of tumors
Buza N. Immunohistochemistry in gynecologic carcinomas: Practical update with diagnostic and clinical considerations based on the 2020 WHO classification of tumors. Seminars In Diagnostic Pathology 2021, 39: 58-77. PMID: 34750021, DOI: 10.1053/j.semdp.2021.10.006.Peer-Reviewed Original ResearchMeSH KeywordsCarcinomaFemaleGenital Neoplasms, FemaleHumansImmunohistochemistryWorld Health OrganizationConceptsGynecologic carcinomasOvarian carcinomaPathology evaluationLower genital tract carcinomaMismatch repair protein immunohistochemistryGenital tract carcinomaPD-L1 testingFemale genital tumorsLower genital tractSignificant prognostic differencesPrediction of prognosisRoutine pathology practiceClassification of tumorsMucinous adenocarcinomaPrognostic differencesEndometrial carcinomaHuman papillomavirusGenital tumorsProtein immunohistochemistryWHO classificationPrecursor lesionsGenital tractDiagnostic confirmationDifferential diagnosisImmunohistochemical markersReproducibility 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
HER2 Testing and Reporting in Endometrial Serous Carcinoma: Practical Recommendations for HER2 Immunohistochemistry and Fluorescent In Situ Hybridization: Proceedings of the ISGyP Companion Society Session at the 2020 USCAP Annual Meeting
Buza N. HER2 Testing and Reporting in Endometrial Serous Carcinoma: Practical Recommendations for HER2 Immunohistochemistry and Fluorescent In Situ Hybridization: Proceedings of the ISGyP Companion Society Session at the 2020 USCAP Annual Meeting. International Journal Of Gynecological Pathology 2020, 40: 17-23. PMID: 33290351, DOI: 10.1097/pgp.0000000000000711.Peer-Reviewed Original ResearchConceptsEndometrial serous carcinomaSerous carcinomaHER2 testingClinical trialsISGyP Companion Society SessionHER2 testing algorithmStandard chemotherapy regimenAnti-HER2 therapyRecent clinical trialsNew patient cohortCurrent clinical practiceHER2 scoring criteriaHER2 protein expressionUSCAP Annual MeetingChemotherapy regimenOverall survivalAppropriate triagingClinical benefitPatient cohortPatient enrollmentTrial criteriaTherapeutic responseTreatment approachesClinical practiceHER2 immunohistochemistryDoes 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 2Frequent loss of mutation-specific mismatch repair protein expression in nonneoplastic endometrium of Lynch syndrome patients
Wong S, Hui P, Buza N. Frequent loss of mutation-specific mismatch repair protein expression in nonneoplastic endometrium of Lynch syndrome patients. Modern Pathology 2020, 33: 1172-1181. PMID: 31932681, DOI: 10.1038/s41379-020-0455-x.Peer-Reviewed Original ResearchConceptsLynch syndrome patientsLynch syndromeMMR protein expressionSporadic endometrial carcinomasSyndrome patientsEndometrial cancerEndometrial glandsEndometrial carcinomaProtein expressionLynch syndrome-associated endometrial cancerGermline mutationsMismatch repair protein expressionMMR protein immunohistochemistryEndometrial cancer patientsNonneoplastic endometriumBenign endometrial tissuesMicrosatellite instability testingMMR protein lossGermline mutation analysisDNA mismatch repair genesRepair protein expressionMismatch repair genesBackground endometriumMMR immunohistochemistryProphylactic hysterectomy
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
Comprehensive Analysis of PAX8 Expression in Epithelial Malignancies of the Uterine Cervix
Wong S, Hong W, Hui P, Buza N. Comprehensive Analysis of PAX8 Expression in Epithelial Malignancies of the Uterine Cervix. International Journal Of Gynecological Pathology 2017, 36: 101-106. PMID: 27362905, DOI: 10.1097/pgp.0000000000000309.Peer-Reviewed Original ResearchMeSH KeywordsBiomarkers, TumorFemaleHumansImmunohistochemistryPAX8 Transcription FactorTissue Array AnalysisUterine Cervical NeoplasmsConceptsSquamous cell carcinomaEpithelial malignanciesPAX8 expressionAdenosquamous carcinomaMajority of SCCsCervical squamous cell carcinomaPossible primary sitesEndometrioid-type tumorsWeak nuclear stainingTissue microarray slidesGynecologic malignanciesEndometrial adenocarcinomaEndometrioid adenocarcinomaMetastatic lesionsEndometrial carcinomaMetastatic sitesUterine cervixCell carcinomaCervical tumorsEndocervical adenocarcinomaDifferential diagnosisPrimary siteAdenocarcinomaCarcinomaMalignancy
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