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 MSIA phase II evaluation of pembrolizumab in recurrent microsatellite instability-high (MSI-H) endometrial cancer patients with Lynch-like versus MLH-1 methylated characteristics (NCT02899793).
Roque D, Bellone S, Siegel E, Buza N, Bonazzoli E, Guglielmi A, Zammataro L, Nagarkatti N, Zaidi S, Lee J, Schwartz P, Ratner E, Alexandrov L, Iwasaki A, Kong Y, Song E, Dong W, Elvin J, Choi J, Santin A. A phase II evaluation of pembrolizumab in recurrent microsatellite instability-high (MSI-H) endometrial cancer patients with Lynch-like versus MLH-1 methylated characteristics (NCT02899793). Journal Of Clinical Oncology 2021, 39: 5523-5523. DOI: 10.1200/jco.2021.39.15_suppl.5523.Peer-Reviewed Original ResearchObjective response rateImmune checkpoint inhibitorsEndometrial cancer patientsTumor mutational burdenCancer patientsGrade 3/4 treatment-related adverse eventsSolid Tumors version 1.1Treatment-related adverse eventsSporadic tumorsPhase II pilot studyOverall survival proportionPrimary end pointResponse Evaluation CriteriaPhase II evaluationAntigen processing/presentationProcessing/presentationAdverse eventsICI resistancePrognostic significanceMechanisms of resistancePolymerase chain reactionII evaluationClinical studiesMutational burdenPatients
2020
Selection 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 antibodiesNeu
2018
Mechanisms of resistance to HER2-targeted therapies in HER2-amplified uterine serous carcinoma, and strategies to overcome it.
Menderes G, Lopez S, Han C, Altwerger G, Gysler S, Varughese J, Schwartz PE, Santin AD. Mechanisms of resistance to HER2-targeted therapies in HER2-amplified uterine serous carcinoma, and strategies to overcome it. Discovery Medicine 2018, 26: 39-50. PMID: 30265854.Peer-Reviewed Original ResearchConceptsUterine serous carcinomaTyrosine kinase inhibitorsUSC patientsSerous carcinomaHER2/neu-targeted therapiesEndometrial cancer-related deathsHER2/neu amplificationKinase inhibitorsSingle-agent trastuzumabSignificant clinical activityRecent whole-exome sequencing studiesCancer-related deathEffective therapeutic strategyTumor growth inhibitionEndometrial cancerAggressive subtypeMechanisms of resistanceWhole-exome sequencing studiesClinical activityPreclinical studiesTarget therapyTherapeutic strategiesNeu amplificationHER2Therapy
2015
PIK3CA oncogenic mutations represent a major mechanism of resistance to trastuzumab in HER2/neu overexpressing uterine serous carcinomas
Black JD, Lopez S, Cocco E, Bellone S, Altwerger G, Schwab CL, English DP, Bonazzoli E, Predolini F, Ferrari F, Ratner E, Silasi DA, Azodi M, Schwartz PE, Santin AD. PIK3CA oncogenic mutations represent a major mechanism of resistance to trastuzumab in HER2/neu overexpressing uterine serous carcinomas. British Journal Of Cancer 2015, 113: 1020-1026. PMID: 26325104, PMCID: PMC4651122, DOI: 10.1038/bjc.2015.306.Peer-Reviewed Original ResearchConceptsUSC cell linesCell linesPIK3CA-mutated tumorsUterine serous carcinomaHER2/neuXenograft mouse modelOncogenic PIK3CA mutationsPrimary HER2Trastuzumab treatmentSerous carcinomaCarcinoma cell linesMechanisms of resistancePIK3CA mutationsTrastuzumab efficacyMouse modelTrastuzumabMouse xenograftsHER2Tumor growthMajor mechanismOncogenic mutationsWild-type cell linesSitu hybridisation