2022
Synergistic activity of neratinib in combination with olaparib in uterine serous carcinoma overexpressing HER2/neu
Yadav G, Roque DM, Bellone S, Manavella DD, Hartwich TMP, Zipponi M, Harold J, Tymon-Rosario J, Mutlu L, Altwerger G, Menderes G, Ratner E, Buza N, Hui P, Huang GS, Andikyan V, Clark M, Azodi M, Schwartz PE, Alexandrov LB, Santin AD. Synergistic activity of neratinib in combination with olaparib in uterine serous carcinoma overexpressing HER2/neu. Gynecologic Oncology 2022, 166: 351-357. PMID: 35641325, DOI: 10.1016/j.ygyno.2022.05.021.Peer-Reviewed Original ResearchConceptsUterine serous carcinomaHER2/neu expressionHER2/neuCombination of olaparibUSC xenograftsUSC cell linesNeu expressionSerous carcinomaLow HER2/neu expressionHER2/neu 3Cell linesHER2/neu gene amplificationNovel therapeutic optionsPolymerase inhibitor olaparibNeu gene amplificationDurable growth inhibitionNeratinib treatmentUSC cellsUSC patientsEndometrial cancerAggressive variantTherapeutic optionsPoor prognosisHER2/Single agent
2021
A phase 2 evaluation of pembrolizumab for recurrent Lynch‐like versus sporadic endometrial cancers with microsatellite instability
Bellone S, Roque DM, Siegel ER, Buza N, Hui P, Bonazzoli E, Guglielmi A, Zammataro L, Nagarkatti N, Zaidi S, Lee J, Silasi D, Huang GS, Andikyan V, Damast S, Clark M, Azodi M, Schwartz PE, Tymon‐Rosario J, Harold JA, Mauricio D, Zeybek B, Menderes G, Altwerger G, Ratner E, Alexandrov LB, Iwasaki A, Kong Y, Song E, Dong W, Elvin JA, Choi J, Santin AD. A phase 2 evaluation of pembrolizumab for recurrent Lynch‐like versus sporadic endometrial cancers with microsatellite instability. Cancer 2021, 128: 1206-1218. PMID: 34875107, PMCID: PMC9465822, DOI: 10.1002/cncr.34025.Peer-Reviewed Original ResearchConceptsObjective response rateImmune checkpoint inhibitorsProgression-free survivalEndometrial cancerWhole-exome sequencingSporadic endometrial cancerOverall survivalEnd pointPhase 2 pilot studyPrimary end pointSecondary end pointsTumor mutation burdenPhase 2 evaluationLarger confirmatory studiesAntigen processing/presentationProcessing/presentationCheckpoint inhibitorsSurgical resectionICI resistanceDMMR patientsPrognostic significanceDMMR tumorsMechanisms of resistanceLocal treatmentSporadic MSIDHES0815A, 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 variantsUterine Epithelial Neoplasia
Hui P, Flynn C, Quddus M. Uterine Epithelial Neoplasia. Practical Anatomic Pathology 2021, 113-130. DOI: 10.1007/978-3-030-68608-6_5.Peer-Reviewed Original ResearchCommon endometrioid adenocarcinomaClear cell carcinomaHigh-grade carcinomaGestational alterationsEndometrial malignancyCurettage specimenEndometrial hyperplasiaEndometrial polypsEndometrial cancerEndometrioid adenocarcinomaHistological typeAtypical hyperplasiaCell carcinomaDedifferentiated carcinomaMixed carcinomasNeuroendocrine carcinomaNonneoplastic lesionsPreneoplastic conditionsInflammatory processPrognostic informationUndifferentiated carcinomaEpithelial neoplasiaSmall biopsiesCarcinomaMolecular classification
2020
Randomized Phase II Trial of Carboplatin–Paclitaxel Compared with Carboplatin–Paclitaxel–Trastuzumab in Advanced (Stage III–IV) or Recurrent Uterine Serous Carcinomas that Overexpress Her2/Neu (NCT01367002): Updated Overall Survival Analysis
Fader AN, Roque DM, Siegel E, Buza N, Hui P, Abdelghany O, Chambers S, Secord AA, Havrilesky L, O'Malley DM, Backes FJ, Nevadunsky N, Edraki B, Pikaart D, Lowery W, ElSahwi K, Celano P, Bellone S, Azodi M, Litkouhi B, Ratner E, Silasi DA, Schwartz PE, Santin AD. Randomized Phase II Trial of Carboplatin–Paclitaxel Compared with Carboplatin–Paclitaxel–Trastuzumab in Advanced (Stage III–IV) or Recurrent Uterine Serous Carcinomas that Overexpress Her2/Neu (NCT01367002): Updated Overall Survival Analysis. Clinical Cancer Research 2020, 26: 3928-3935. PMID: 32601075, PMCID: PMC8792803, DOI: 10.1158/1078-0432.ccr-20-0953.Peer-Reviewed Original ResearchMeSH KeywordsAgedAntineoplastic Combined Chemotherapy ProtocolsCarboplatinChemotherapy, AdjuvantCystadenocarcinoma, SerousCytoreduction Surgical ProceduresDrug Administration ScheduleEndometrial NeoplasmsEndometriumFemaleFollow-Up StudiesHumansMiddle AgedNeoplasm Recurrence, LocalNeoplasm StagingPaclitaxelProgression-Free SurvivalReceptor, ErbB-2Survival AnalysisTrastuzumabConceptsProgression-free survivalRandomized phase II trialPhase II trialOverall survivalHER2/neuStage IIICarboplatin-paclitaxelII trialRecurrent diseaseControl armSurvival analysisRecurrent uterine serous carcinomaCarboplatin/paclitaxelUterine serous carcinomaOverall survival analysisEvaluable patientsEligible patientsPrimary endpointSecondary endpointsEndometrial cancerAggressive variantSerous carcinomaPrimary treatmentSurvival medianPatientsSelection of HER2/NEU negative tumor cells as a mechanism of resistance to trastuzumab in uterine serous carcinoma
Pelligra S, Buza N, Hui P, Bellone S, Zeybek B, Ratner E, Schwartz PE, Scambia G, Santin AD. Selection of HER2/NEU negative tumor cells as a mechanism of resistance to trastuzumab in uterine serous carcinoma. Gynecologic Oncology Reports 2020, 32: 100554. PMID: 32140533, PMCID: PMC7049633, DOI: 10.1016/j.gore.2020.100554.Peer-Reviewed Original ResearchUterine serous carcinomaHER2/neuNegative tumor cellsUSC patientsTumor cellsSerous carcinomaHER2/neu overexpressionCarboplatin/paclitaxelInitial clinical responsePost-treatment biopsiesHumanized monoclonal antibodyC-erbB2 gene amplificationNCCN guidelinesClinical responseEndometrial cancerPreferred regimenAggressive variantMechanisms of resistanceNeu overexpressionRecurrent/HER2/TrastuzumabPatientsMonoclonal antibodiesNeuSacituzumab govitecan, an antibody‐drug conjugate targeting trophoblast cell‐surface antigen 2, shows cytotoxic activity against poorly differentiated endometrial adenocarcinomas in vitro and in vivo
Perrone E, Manara P, Lopez S, Bellone S, Bonazzoli E, Manzano A, Zammataro L, Bianchi A, Zeybek B, Buza N, Tymon‐Rosario J, Altwerger G, Han C, Menderes G, Huang GS, Ratner E, Silasi D, Azodi M, Hui P, Schwartz PE, Scambia G, Santin AD. Sacituzumab govitecan, an antibody‐drug conjugate targeting trophoblast cell‐surface antigen 2, shows cytotoxic activity against poorly differentiated endometrial adenocarcinomas in vitro and in vivo. Molecular Oncology 2020, 14: 645-656. PMID: 31891442, PMCID: PMC7053235, DOI: 10.1002/1878-0261.12627.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAntibodies, Monoclonal, HumanizedAntibody-Dependent Cell CytotoxicityAntigens, NeoplasmAntineoplastic AgentsCamptothecinCarcinoma, EndometrioidCell Adhesion MoleculesCell DifferentiationCell Line, TumorCell SurvivalEndometrial NeoplasmsFemaleHumansImmunoconjugatesImmunohistochemistryIrinotecanMiceMice, SCIDTissue Array AnalysisXenograft Model Antitumor AssaysConceptsAntibody-dependent cell cytotoxicityCell surface antigen 2EC cell linesSacituzumab govitecanTrop-2 expressionPrimary tumor cell linesTrop-2Xenograft modelAntigen 2Cell linesTumor cell linesCommon gynecologic malignancyFuture clinical trialsChromium release assaysParaffin-embedded tumorsTumor growth inhibitionSignificant bystander killingEC xenograftsGynecologic malignanciesEndometrial cancerEndometrial adenocarcinomaEndometrioid carcinoma tissuesPreclinical activityControl antibodyClinical trialsFrequent 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
2019
In vitro and in vivo activity of sacituzumab govitecan, an antibody-drug conjugate targeting trophoblast cell-surface antigen 2 (Trop-2) in uterine serous carcinoma
Han C, Perrone E, Zeybek B, Bellone S, Tymon-Rosario J, Altwerger G, Menderes G, Feinberg J, Haines K, Muller Karger ME, Bianchi A, Zammataro L, Manzano A, Bonazzoli E, Manara P, Buza N, Hui P, Ratner E, Silasi DA, Huang GS, Azodi M, Schwartz PE, Lopez S, Santin AD. In vitro and in vivo activity of sacituzumab govitecan, an antibody-drug conjugate targeting trophoblast cell-surface antigen 2 (Trop-2) in uterine serous carcinoma. Gynecologic Oncology 2019, 156: 430-438. PMID: 31839338, DOI: 10.1016/j.ygyno.2019.11.018.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAntibodies, Monoclonal, HumanizedAntibody-Dependent Cell CytotoxicityAntigens, NeoplasmCamptothecinCell Adhesion MoleculesCell Line, TumorCystadenocarcinoma, SerousFemaleFlow CytometryHumansImmunoconjugatesImmunohistochemistryMiceMice, SCIDMolecular Targeted TherapyRandom AllocationTissue Array AnalysisUterine NeoplasmsXenograft Model Antitumor AssaysConceptsUterine serous carcinomaCell surface antigen 2Sacituzumab govitecanTrop-2 expressionTrop-2Serous carcinomaAntigen 2Advanced/recurrent diseasePrimary uterine serous carcinomaResistant human tumorsSignificant bystander killingUSC patientsUSC xenograftsRecurrent diseaseClinical responseEndometrial cancerAggressive variantPoor prognosisPreclinical activityPrimary tumorIntravenous administrationClinical developmentUSC samplesActive metaboliteSN-38Ten-Year Comparison Study of Type 1 and 2 Endometrial Cancers: Risk Factors and Outcomes
Feinberg J, Albright B, Black J, Lu L, Passarelli R, Gysler S, Whicker M, Altwerger G, Menderes G, Hui P, Santin AD, Azodi M, Silasi DA, Ratner ES, Litkouhi B, Schwartz PE. Ten-Year Comparison Study of Type 1 and 2 Endometrial Cancers: Risk Factors and Outcomes. Gynecologic And Obstetric Investigation 2019, 84: 290-297. PMID: 30602164, DOI: 10.1159/000493132.Peer-Reviewed Original ResearchConceptsType 2 cancerHormone replacement therapyCox regression modelType 2 diseaseRisk factorsEndometrial cancerType 1Use of HRTLess obese patientsBaseline risk factorsEndometrial cancer casesMajor cardiovascular diseasesObese patientsOral contraceptivesOverall survivalClinical courseDiabetes mellitusRetrospective reviewRegression modelsReplacement therapyCardiovascular diseaseCancer casesAdvanced stageHigh mortalityRecurrence
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-6Inhibition of BET Bromodomain Proteins with GS-5829 and GS-626510 in Uterine Serous Carcinoma, a Biologically Aggressive Variant of Endometrial Cancer
Bonazzoli E, Predolini F, Cocco E, Bellone S, Altwerger G, Menderes G, Zammataro L, Bianchi A, Pettinella F, Riccio F, Han C, Yadav G, Lopez S, Manzano A, Manara P, Buza N, Hui P, Wong S, Litkouhi B, Ratner E, Silasi DA, Huang GS, Azodi M, Schwartz PE, Schlessinger J, Santin AD. Inhibition of BET Bromodomain Proteins with GS-5829 and GS-626510 in Uterine Serous Carcinoma, a Biologically Aggressive Variant of Endometrial Cancer. Clinical Cancer Research 2018, 24: 4845-4853. PMID: 29941483, PMCID: PMC6168417, DOI: 10.1158/1078-0432.ccr-18-0864.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedAged, 80 and overAnimalsAntineoplastic AgentsApoptosisAurora Kinase AAurora Kinase BAzepinesCell Line, TumorCell ProliferationCystadenocarcinoma, SerousDose-Response Relationship, DrugEndometrial NeoplasmsExome SequencingFemaleGene Expression Regulation, NeoplasticHumansMiceMiddle AgedPhosphorylationPrimary Cell CultureProteinsProto-Oncogene Proteins c-mycTriazolesUterine NeoplasmsXenograft Model Antitumor AssaysConceptsUterine serous carcinomaPrimary USC cell linesUSC cell linesC-myc expressionCell linesC-MycChemotherapy-resistant diseaseQRT-PCRHigh c-myc expressionDose-dependent decreaseDose-dependent increasePotential therapeutic targetEffective therapeutic agentMouse xenograft modelClin Cancer ResFresh frozen tumor tissueC-myc gene amplificationUSC xenograftsEndometrial cancerAggressive variantSerous carcinomaWhole-exome sequencing studiesClinical studiesConcentrations/dosesXenograft modelIn vitro and in vivo activity of IMGN853, an Antibody-Drug Conjugate targeting Folate Receptor Alpha linked to DM4, in biologically aggressive endometrial cancers
Altwerger G, Bonazzoli E, Bellone S, Egawa-Takata T, Menderes G, Pettinella F, Bianchi A, Riccio F, Feinberg J, Zammataro L, Han C, Yadav G, Dugan K, Morneault A, Ponte JF, Buza N, Hui P, Wong S, Litkouhi B, Ratner E, Silasi DA, Huang GS, Azodi M, Schwartz PE, Santin AD. In vitro and in vivo activity of IMGN853, an Antibody-Drug Conjugate targeting Folate Receptor Alpha linked to DM4, in biologically aggressive endometrial cancers. Molecular Cancer Therapeutics 2018, 17: molcanther.0930.2017. PMID: 29440294, PMCID: PMC5932245, DOI: 10.1158/1535-7163.mct-17-0930.Peer-Reviewed Original ResearchConceptsEndometrial cancerXenograft modelCell linesTumor cell linesPatient-derived xenograft modelsUterine cancer cell linesAggressive endometrial cancersEndometrial cancer deathsExpression of FRαPrimary USC cell linesRecurrent endometrial cancerReceptor alpha expressionUSC cell linesImpressive antitumor activityMol Cancer TherUSC patientsCancer cell linesMedian survivalCancer deathPDX modelsPreclinical dataUterine cancerComplete resolutionIMGN853Grade 3MicroRNA signatures discriminate between uterine and ovarian serous carcinomas
Hui P, Gysler SM, Uduman M, Togun TA, Prado DE, Brambs CE, Nallur S, Schwartz PE, Rutherford TJ, Santin AD, Weidhaas JB, Ratner ES. MicroRNA signatures discriminate between uterine and ovarian serous carcinomas. Human Pathology 2018, 76: 133-140. PMID: 29518404, DOI: 10.1016/j.humpath.2018.02.019.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedAged, 80 and overBiomarkers, TumorCarcinomaDiagnosis, DifferentialFemaleGene Expression ProfilingGenetic Predisposition to DiseaseHumansMicroRNAsMiddle AgedNeoplasm GradingNeoplasms, Cystic, Mucinous, and SerousOligonucleotide Array Sequence AnalysisOvarian NeoplasmsPhenotypePredictive Value of TestsReproducibility of ResultsRetrospective StudiesTranscriptomeUterine NeoplasmsConceptsHigh-grade serous carcinomaOvarian serous carcinomaSerous carcinomaOvarian malignancyPrimary ovarian high-grade serous carcinomaOvarian high-grade serous carcinomaMiRNA signatureEndometrial serous carcinomaHigh-grade ovarian serous carcinomaUterine serous carcinomaEndometrial counterpartOvarian primaryTaqMan Low Density Array technologySynchronous primariesEndometrial cancerMetastatic tumorsCarcinomaPrimary siteSignature panelPathological determinationMicroRNA signatureSignificant discriminatory powerCancer cellsMalignancyLineage characteristics
2016
SYD985, a Novel Duocarmycin-Based HER2-Targeting Antibody–Drug Conjugate, Shows Antitumor Activity in Uterine Serous Carcinoma with HER2/Neu Expression
Black J, Menderes G, Bellone S, Schwab CL, Bonazzoli E, Ferrari F, Predolini F, De Haydu C, Cocco E, Buza N, Hui P, Wong S, Lopez S, Ratner E, Silasi DA, Azodi M, Litkouhi B, Schwartz PE, Goedings P, Beusker PH, van der Lee MM, Timmers CM, Dokter WH, Santin AD. SYD985, a Novel Duocarmycin-Based HER2-Targeting Antibody–Drug Conjugate, Shows Antitumor Activity in Uterine Serous Carcinoma with HER2/Neu Expression. Molecular Cancer Therapeutics 2016, 15: 1900-1909. PMID: 27256376, DOI: 10.1158/1535-7163.mct-16-0163.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedAged, 80 and overAnimalsAntibody-Dependent Cell CytotoxicityAntineoplastic AgentsBystander EffectCathepsin BCell Line, TumorCell SurvivalClass I Phosphatidylinositol 3-KinasesCystadenocarcinoma, SerousDisease Models, AnimalDuocarmycinsFemaleGene ExpressionHumansImmunoconjugatesIndolesMiceMiddle AgedMutationPhosphatidylinositol 3-KinasesPyrrolidinonesReceptor, ErbB-2Survival AnalysisUterine NeoplasmsXenograft Model Antitumor AssaysConceptsUterine serous carcinomaAntibody-dependent cellular cytotoxicityHER2/neu expressionAntibody-drug conjugatesT-DM1Neu expressionHER2-targeting antibody-drug conjugateNovel antibody-drug conjugateNovel HER2-targeting antibody-drug conjugatePrimary USC cell linesHigh HER2 expressionHER2/neu oncogeneHER2/neuMouse xenograft modelUSC cell linesFlow cytometry assayEndometrial cancerSerous carcinomaHER2 expressionTrastuzumab emtansineClinical studiesCellular cytotoxicitySYD985Aggressive formExpress HER2
2013
Cancerous ‘floater’: a lesson learned about tissue identity testing, endometrial cancer and microsatellite instability
Bossuyt V, Buza N, Ngo NT, Much MA, Asis MC, Schwartz PE, Hui P. Cancerous ‘floater’: a lesson learned about tissue identity testing, endometrial cancer and microsatellite instability. Modern Pathology 2013, 26: 1264-1269. PMID: 23558568, DOI: 10.1038/modpathol.2013.63.Peer-Reviewed Original ResearchConceptsEndometrial curettageBackground endometriumStaging surgeryEndometrial cancerEndometrial polypsEndometrioid adenocarcinomaEndometrial adenocarcinomaFurther workupPap smearSecretory endometriumDiagnostic workupEndometrial cellsDNA genotypingAdenocarcinoma tissuesMolecular testingMicrosatellite instabilityAllelic patternsAdenocarcinomaPatientsConfirmation of contaminationTissue fragmentsCurettageEndometriumWorkupMolecular pathologists
2009
In vitro activity of pertuzumab in combination with trastuzumab in uterine serous papillary adenocarcinoma
El-Sahwi K, Bellone S, Cocco E, Cargnelutti M, Casagrande F, Bellone M, Abu-Khalaf M, Buza N, Tavassoli FA, Hui P, Silasi DA, Azodi M, Schwartz PE, Rutherford TJ, Pecorelli S, Santin AD. In vitro activity of pertuzumab in combination with trastuzumab in uterine serous papillary adenocarcinoma. British Journal Of Cancer 2009, 102: 134-143. PMID: 19920829, PMCID: PMC2813756, DOI: 10.1038/sj.bjc.6605448.Peer-Reviewed Original ResearchMeSH KeywordsAdenocarcinoma, PapillaryAgedAntibodies, MonoclonalAntibodies, Monoclonal, HumanizedAntibody-Dependent Cell CytotoxicityCell Line, TumorComplement System ProteinsCytotoxicity, ImmunologicDimerizationDrug Screening Assays, AntitumorDrug SynergismFemaleHumansImmunoglobulin GIn Vitro TechniquesInterleukin-2Killer Cells, NaturalLymphocytesMiddle AgedReceptor, ErbB-2Signal TransductionTrastuzumabUterine NeoplasmsConceptsAntibody-dependent cell-mediated cytotoxicityUSPC cell linesHER2/neu expressionComplement-dependent cytotoxicityStrong antibody-dependent cell-mediated cytotoxicitySerous papillary adenocarcinomaNeu expressionHER2/neuPapillary adenocarcinomaHigh HER2/neu expressionLow HER2/neu expressionCell linesH chromium release assaysPrimary USPC cell linesAdvanced/recurrentCombination of pertuzumabCell-mediated cytotoxicityHumanised monoclonal antibodyChromium release assaysC-erbB2 gene amplificationActivity of pertuzumabNew therapeutic agentsProliferation-based assaysType II receptorEndometrial cancer