2025
Phase Ib Study of Immunocytokine Simlukafusp Alfa (FAP-IL2v) Combined with Pembrolizumab for Treatment of Advanced and/or Metastatic Melanoma
Munoz-Couselo E, Rivas A, Sandhu S, Long G, Sanmamed M, Spreafico A, Buchbinder E, Sznol M, Prenen H, Fedenko A, Milhem M, Fernandez A, Grob J, Demidov L, Robert C, Habigt C, Evers S, Sleiman N, Dejardin D, Ardeshir C, Martin N, Boetsch C, Charo J, Teichgräber V, Kraxner A, Keshelava N, Bechter O. Phase Ib Study of Immunocytokine Simlukafusp Alfa (FAP-IL2v) Combined with Pembrolizumab for Treatment of Advanced and/or Metastatic Melanoma. Cancer Research Communications 2025, 5: 358-368. PMID: 39895413, PMCID: PMC11848832, DOI: 10.1158/2767-9764.crc-24-0601.Peer-Reviewed Original ResearchConceptsPhase Ib studyMetastatic melanomaFibroblast activation proteinSafety profileLack of clinical activityPhase Ib clinical studySafety run-in cohortAntitumor activityProgression-free survivalCD8 T cellsInfusion-related reactionsElevated alanine aminotransferaseQ3W dosingOpen-labelPembrolizumabT cellsAdverse eventsClinical studiesIb studyClinical activityExtension cohortMelanomaPatientsAlanine aminotransferaseInduction phasePhase Ib study of PRT543, an oral protein arginine methyltransferase 5 (PRMT5) inhibitor, in patients with advanced splicing factor-mutant myeloid malignancies
Bewersdorf J, Mi X, Lu B, Kuykendall A, Sallman D, Patel M, Stevens D, Philipovskiy A, Sutamtewagul G, Masarova L, Keiffer G, Verma A, Bhagwat N, Wang M, Moore A, Rager J, Heiser D, Ro S, Hong W, Abdel-Wahab O, Stein E. Phase Ib study of PRT543, an oral protein arginine methyltransferase 5 (PRMT5) inhibitor, in patients with advanced splicing factor-mutant myeloid malignancies. Leukemia 2025, 39: 765-769. PMID: 39856223, PMCID: PMC11879867, DOI: 10.1038/s41375-025-02515-8.Peer-Reviewed Original Research
2024
Phase Ib Study of PRT543, an Oral Protein Arginine Methyltransferase 5 (PRMT5) Inhibitor, in Patients with Relapsed or Refractory, Splicing Factor-Mutant Myeloid Malignancies
Bewersdorf J, Mi X, Lu B, Kuykendall A, Sallman D, Patel M, Stevens D, Philipovskiy A, Sutamtewagul G, Masarova L, Keiffer G, Verma A, Bhagwat N, Heiser D, Ro S, Hong W, Abdel-Wahab O, Stein E. Phase Ib Study of PRT543, an Oral Protein Arginine Methyltransferase 5 (PRMT5) Inhibitor, in Patients with Relapsed or Refractory, Splicing Factor-Mutant Myeloid Malignancies. Blood 2024, 144: 3215. DOI: 10.1182/blood-2024-198495.Peer-Reviewed Original ResearchTreatment-emergent adverse eventsPlatelet transfusion independenceProtein arginine methyltransferase 5Myeloid malignanciesSplicing factor mutationsSymmetric dimethyl arginineMedian PFSTransfusion independenceFollow-upOpen-label phase Ib studyRed blood cell transfusion-dependentPRMT5 inhibitionAdequate end-organ functionBaseline serum EPO levelsRecommended phase 2 doseMedian duration of treatmentGrade 5 eventsLower-risk MDSMDS/MPN overlap syndromesPhase 2 doseIntensive induction chemotherapyPeripheral blood mononuclear cellsHigh-risk MDSPhase Ib studyMedian Follow-UpImmune Cell Dynamics in EGFR-Mutated NSCLC Treated With Afatinib and Pembrolizumab: Results From a Phase IB Study
Riess J, Lara M, de Rodas M, Luxardi G, Herbert S, Shimoda M, Kelly K, Meerlev A, Moore E, Beckett L, Monjazeb A, Schalper K, Maverakis E, Gandara D. Immune Cell Dynamics in EGFR-Mutated NSCLC Treated With Afatinib and Pembrolizumab: Results From a Phase IB Study. JTO Clinical And Research Reports 2024, 5: 100706. PMID: 39318388, PMCID: PMC11420451, DOI: 10.1016/j.jtocrr.2024.100706.Peer-Reviewed Original ResearchImmune related adverse eventsNon-small cell lung cancerEGFR-mutant non-small cell lung cancerMaximum tolerated doseEpidermal growth factor receptorImmune cell subsetsT cellsEGFR-TKIsCell subsetsPD-1 antibody pembrolizumabRecommended phase 2 doseCentral memory T cellsAssociated with anti-tumor activityCD8+ T cellsCD3+ T cellsEGFR-TKI afatinibPD-(L)1 blockadePhase 2 doseTreated with afatinibPhase Ib studyMemory T cellsImmune cell dynamicsControlling brain metastasesCell lung cancerCD4/CD8 T cellsPhase Ib dose-escalation trial of taselisib (GDC-0032) in combination with HER2-directed therapies in patients with advanced HER2+ breast cancer
Grinshpun A, Ren S, Graham N, DeMeo M, Wrabel E, Carter J, Tayob N, Pereslete A, Hamilton E, Juric D, Mayer E, Tolaney S, Krop I, Metzger O. Phase Ib dose-escalation trial of taselisib (GDC-0032) in combination with HER2-directed therapies in patients with advanced HER2+ breast cancer. ESMO Open 2024, 9: 103465. PMID: 38833970, PMCID: PMC11179085, DOI: 10.1016/j.esmoop.2024.103465.Peer-Reviewed Original ResearchProgression-free survivalMaximal tolerated doseHER2+ breast cancerAdverse eventsBreast cancerT-DM1Cohort AHuman epidermal growth factor receptor 2-positiveEpidermal growth factor receptor 2-positiveHER2+) breast cancerMedian progression-free survivalAll-grade adverse eventsAssociated with significant toxicityCirculating tumor DNA analysisDevelopment of acquired resistanceHER2-directed regimensHER2-directed therapyAnti-HER2 therapyHER2-Targeted TherapyPhase Ib studyTumor DNA analysisPI3KDose escalationImprove disease controlOral inhibitor
2023
Sabatolimab in Combination with Hypomethylating Agents (HMAs) Was Safe in Patients (Pts) with Intermediate-, High-, or Very-High-Risk Myelodysplastic Syndrome (MDS)
Garcia-Manero G, Lyons R, Nandal S, Ashraf M, Thellaboina R, Ruckel-Kumar J, Menssen H, Zeidan A. Sabatolimab in Combination with Hypomethylating Agents (HMAs) Was Safe in Patients (Pts) with Intermediate-, High-, or Very-High-Risk Myelodysplastic Syndrome (MDS). Blood 2023, 142: 4606. DOI: 10.1182/blood-2023-186490.Peer-Reviewed Original ResearchHigh-risk myelodysplastic syndromeAdverse eventsHematologic improvementPartial remissionMyelodysplastic syndromeHypomethylating agentMarrow CRInterim analysisStable diseaseData cutoffLast doseInternational Prognostic Scoring System criteriaResponse rateCount decreaseCycle 1 day 1Second-line treatment optionExtension phaseHematologic adverse eventsNeutrophil count decreaseOral hypomethylating agentPhase Ib studySerious adverse eventsFatal adverse eventsMonths of treatmentSingle-arm studyGilteritinib in Combination With Induction and Consolidation Chemotherapy and as Maintenance Therapy: A Phase IB Study in Patients With Newly Diagnosed AML
Pratz K, Cherry M, Altman J, Cooper B, Podoltsev N, Cruz J, Lin T, Schiller G, Jurcic J, Asch A, Wu R, Hill J, Gill S, James A, Rich E, Hasabou N, Perl A, Levis M. Gilteritinib in Combination With Induction and Consolidation Chemotherapy and as Maintenance Therapy: A Phase IB Study in Patients With Newly Diagnosed AML. Journal Of Clinical Oncology 2023, 41: 4236-4246. PMID: 37379495, DOI: 10.1200/jco.22.02721.Peer-Reviewed Original ResearchConceptsPhase Ib studyMaintenance therapyConsolidation chemotherapyDose escalationFLT3 inhibitorsIb studyHigh-dose cytarabine consolidationMedian overall survival timeSingle-agent maintenance therapyComplete response rateHigher trough levelsOverall survival timeCytarabine consolidationChemotherapy regimenDose expansionAdult patientsIntensive inductionTrough levelsCount recoveryMedian timeRandomized trialsInduction cyclesSurvival timeDay 1Response rateSafety and activity of anti-mesothelin antibody–drug conjugate anetumab ravtansine in combination with pegylated-liposomal doxorubicin in platinum-resistant ovarian cancer: multicenter, phase Ib dose escalation and expansion study
Santin A, Vergote I, González-Martín A, Moore K, Oaknin A, Romero I, Diab S, Copeland L, Monk B, Coleman R, Herzog T, Siegel J, Kasten L, Schlicker A, Schulz A, Köchert K, Walter A, Childs B, Elbi C, Bulat I. Safety and activity of anti-mesothelin antibody–drug conjugate anetumab ravtansine in combination with pegylated-liposomal doxorubicin in platinum-resistant ovarian cancer: multicenter, phase Ib dose escalation and expansion study. International Journal Of Gynecological Cancer 2023, 33: 1-9. PMID: 36564099, PMCID: PMC10086500, DOI: 10.1136/ijgc-2022-003927.Peer-Reviewed Original ResearchConceptsPlatinum-resistant ovarian cancerProgression-free survivalMedian progression-free survivalAnetumab ravtansineObjective response rateOvarian cancerLiposomal doxorubicinMedian durationAdverse eventsDose escalationMesothelin expressionCommon treatment-emergent adverse eventsPlatinum-resistant epithelial ovarian cancerResponse rateAnti-mesothelin monoclonal antibodyTreatment-emergent adverse eventsHigh mesothelin expressionPegylated-liposomal doxorubicinPhase Ib studyPhase III studyDose-limiting toxicityPromising clinical activityEpithelial ovarian cancerAnti-tumor activityCentral immunohistochemistryPhase Ib study of HSP90 inhibitor, onalespib (AT13387), in combination with paclitaxel in patients with advanced triple-negative breast cancer
Williams N, Quiroga D, Johnson C, Brufsky A, Chambers M, Bhattacharya S, Patterson M, Sardesai S, Stover D, Lustberg M, Noonan A, Cherian M, Bystry D, Hill K, Chen M, Phelps M, Grever M, Stephens J, Ramaswamy B, Carson W, Wesolowski R. Phase Ib study of HSP90 inhibitor, onalespib (AT13387), in combination with paclitaxel in patients with advanced triple-negative breast cancer. Therapeutic Advances In Medical Oncology 2023, 15: 17588359231217976. PMID: 38152697, PMCID: PMC10752118, DOI: 10.1177/17588359231217976.Peer-Reviewed Original ResearchAdvanced triple-negative breast cancerTriple-negative breast cancerProgression-free survivalDuration of responseOverall response ratePrior taxane therapyAdverse eventsTaxane therapyCombination therapyBreast cancerMedian DORMedian progression-free survivalNon-hematologic adverse eventsPhase Ib studyPhase Ib trialPhase II doseAcceptable toxicity profileDose-limiting toxicityDrug interaction profileIb trialIntravenous paclitaxelPaclitaxel efficacyExpansion cohortCombination regimenMetastatic disease
2022
Phase Ib study of pembrolizumab in combination with trastuzumab emtansine for metastatic HER2-positive breast cancer
Waks AG, Keenan TE, Li T, Tayob N, Wulf GM, Richardson ET, Attaya V, Anderson L, Mittendorf EA, Overmoyer B, Winer EP, Krop IE, Agudo J, Van Allen EM, Tolaney SM. Phase Ib study of pembrolizumab in combination with trastuzumab emtansine for metastatic HER2-positive breast cancer. Journal For ImmunoTherapy Of Cancer 2022, 10: e005119. PMID: 36252998, PMCID: PMC9577940, DOI: 10.1136/jitc-2022-005119.Peer-Reviewed Original ResearchConceptsObjective response rateProgression-free survivalMetastatic breast cancerAdverse eventsBreast cancerT-DM1Immune biomarkersTrastuzumab emtansineHER2-positive metastatic breast cancerMetastatic HER2-positive breast cancerGrade 3 adverse eventsMedian progression-free survivalTreatment-related adverse eventsHuman epidermal growth factor receptor 2Cell death ligand 1HER2-positive breast cancerEpidermal growth factor receptor 2Dose-finding cohortPhase 2 dosePhase Ib studyPhase Ib trialAnti-HER2 therapyDose-limiting toxicityGrowth factor receptor 2Immune checkpoint blockadeNivolumab/ipilimumab with or without CBM588 in metastatic renal cell carcinoma: A randomized phase Ib study and the evolution of the functionality of microbial communities with treatment.
Dizman N, Meza L, Bergerot P, Alcantara M, Dorff T, Lyou Y, Frankel P, Llamas M, Hsu J, Zengin Z, Malhotra J, Gillece J, Reining L, Trent J, Takahashi M, Oka K, Higashi S, Highlander S, Pal S. Nivolumab/ipilimumab with or without CBM588 in metastatic renal cell carcinoma: A randomized phase Ib study and the evolution of the functionality of microbial communities with treatment. Journal Of Clinical Oncology 2022, 40: 371-371. DOI: 10.1200/jco.2022.40.6_suppl.371.Peer-Reviewed Original ResearchMetastatic renal cell carcinomaNivolumab/ipilimumabRenal cell carcinomaClinical outcomesIpilimumab armCell carcinomaTissue next-generation sequencingPhase Ib studyProtocol-based therapyHigh-risk diseaseGut microbial compositionGut microbiome functionalityGut microbiome functionPrior nephrectomyObjective responseSarcomatoid featuresMedian ageRisk diseaseWeek 12Body of evidenceIpilimumabStool samplesClear cellsTreatment responseIb studyIntestinal microbiome associated with development of grade 3/4 adverse in patients with metastatic renal cell carcinoma (mRCC) treated with nivolumab plus ipilimumab (N/I) and probiotic support: Results from a phase Ib study.
Meza L, Dizman N, Bergerot P, Dorff T, Lyou Y, Frankel P, Llamas M, Hsu J, Zengin Z, Salgia N, Malhotra J, Chawla N, Gillece J, Reining L, Trent J, Takahashi M, Oka K, Higashi S, Highlander S, Pal S. Intestinal microbiome associated with development of grade 3/4 adverse in patients with metastatic renal cell carcinoma (mRCC) treated with nivolumab plus ipilimumab (N/I) and probiotic support: Results from a phase Ib study. Journal Of Clinical Oncology 2022, 40: 374-374. DOI: 10.1200/jco.2022.40.6_suppl.374.Peer-Reviewed Original ResearchMetastatic renal cell carcinomaSetting of mRCCStool microbiome compositionPhase Ib studyWeeks of therapyFirst-line treatmentLung cancer patientsRenal cell carcinomaMicrobiome compositionDevelopment of treatmentsB. thetaiotamicronMedian followMRCC patientsAdverse eventsData cutoffOverall cohortIntervention armLine treatmentCell carcinomaCancer patientsTRAEsStool samplesStool specimensIntestinal microbiomeLarge cohort
2021
Phase Ib Study of Atezolizumab Plus Interferon-α with or without Bevacizumab in Patients with Metastatic Renal Cell Carcinoma and Other Solid Tumors
Blank CU, Wong DJ, Ho TH, Bauer TM, Lee CB, Bene-Tchaleu F, Zhu J, Zhang X, Cha E, Sznol M. Phase Ib Study of Atezolizumab Plus Interferon-α with or without Bevacizumab in Patients with Metastatic Renal Cell Carcinoma and Other Solid Tumors. Current Oncology 2021, 28: 5466-5479. PMID: 34940094, PMCID: PMC8700717, DOI: 10.3390/curroncol28060455.Peer-Reviewed Original ResearchConceptsRenal cell carcinomaObjective response ratePEG-interferon α-2aPhase Ib studyInterferon α-2bArm BSolid tumorsCell carcinomaClinical activityΑ-2aΑ-2bIb studyVascular endothelial growth factor inhibitorsFrequent treatment-related toxicitiesHigher objective response rateMetastatic renal cell carcinomaArm DTreatment-related toxicityPreliminary clinical activityGrowth factor inhibitorsMetastatic solid tumorsAcceptable tolerabilityFactor inhibitorsSafety profileCombination therapyMDS-364: STIMULUS MDS-US Trial in Progress: Evaluating Sabatolimab in Combination with Hypomethylating Agents (HMAs) in Patients with Intermediate-, High-, or Very High–Risk Myelodysplastic Syndromes (MDS)
Zeidan A, DeZern A, Borate U, Kobata K, Sadek I, Sabo J, Purkayastha D, Ramos P, Sun H, Lyons R, Garcia-Manero G. MDS-364: STIMULUS MDS-US Trial in Progress: Evaluating Sabatolimab in Combination with Hypomethylating Agents (HMAs) in Patients with Intermediate-, High-, or Very High–Risk Myelodysplastic Syndromes (MDS). Clinical Lymphoma Myeloma & Leukemia 2021, 21: s348-s349. DOI: 10.1016/s2152-2650(21)01808-5.Peer-Reviewed Original ResearchHigh-risk myelodysplastic syndromeMyelodysplastic syndromeHypomethylating agentAdverse eventsInvestigator's choiceCR/PRHematopoietic stem cell transplantDuration of CROral hypomethylating agentLeukemia-free survivalPhase Ib studyPhase II studySerious adverse eventsComplete remission ratePercentage of patientsProgression-free survivalMonths of treatmentStem cell transplantFavorable safety profileExperience poor outcomesNormal hematopoietic stem cellsMultiple phase IMyeloid leukemic cellsEligible patientsOral decitabineLBA-5 Phase Ib study of the anti-TIGIT antibody tiragolumab in combination with atezolizumab in patients with metastatic esophageal cancer
Wainberg Z, Matos I, Delord J, Cassier P, Gil-Martin M, Kim T, LoRusso P, Bahleda R, Italiano A, Mendus D, Hoang T, Xue C, Wen X, Carvalho O, Pham T, Patil N, Meng R, Bendell J, Cervantes A, Cho B. LBA-5 Phase Ib study of the anti-TIGIT antibody tiragolumab in combination with atezolizumab in patients with metastatic esophageal cancer. Annals Of Oncology 2021, 32: s227-s228. DOI: 10.1016/j.annonc.2021.06.012.Peer-Reviewed Original ResearchA phase Ib study of xentuzumab plus abemaciclib and fulvestrant in patients (pts) with advanced hormone receptor-positive (HR+), HER2-negative breast cancer (BC) with visceral or non-visceral disease.
Yee D, LoRusso P, Sablin M, Prat A, Stradella A, Utriainen M, Oliveira M, Yonemori K, Naito Y, Hardebeck M, Puig M, Hu J, Biyukov T, Iwata H. A phase Ib study of xentuzumab plus abemaciclib and fulvestrant in patients (pts) with advanced hormone receptor-positive (HR+), HER2-negative breast cancer (BC) with visceral or non-visceral disease. Journal Of Clinical Oncology 2021, 39: 1057-1057. DOI: 10.1200/jco.2021.39.15_suppl.1057.Peer-Reviewed Original ResearchDisease control rateNon-visceral diseaseEndocrine therapyBreast cancerVisceral metastasesProgression-free survival benefitHER2-negative breast cancerDisease controlDose-finding cohortMost common AEsMedian treatment durationOpen-label studyPhase Ib studyPhase II doseNon-measurable diseaseHypo/hyperglycemiaCyclin-dependent kinase 4Advanced hormoneCommon AEsPFS ratesExpansion cohortPostmenopausal womenPrimary endpointSecondary endpointsMedian durationA phase 1b study of nivolumab in patients with autoimmune disorders and advanced malignancies (AIM-NIVO).
Dumbrava E, Dougan M, Gupta S, Cappelli L, Katsumoto T, Rahma O, Painter J, Wang Y, Suarez-Almazor M, Reid P, Wesley S, Hafler D, Bingham C, Warner B, Chung L, Ott P, Kluger H, Khosroshahi A, Tawbi H, Sharon E. A phase 1b study of nivolumab in patients with autoimmune disorders and advanced malignancies (AIM-NIVO). Journal Of Clinical Oncology 2021, 39: tps2676-tps2676. DOI: 10.1200/jco.2021.39.15_suppl.tps2676.Peer-Reviewed Original ResearchImmune checkpoint inhibitorsDisease-specific cohortsAutoimmune disordersAdverse eventsAdvanced malignanciesAnti-PD-1/PD-L1 antibodiesPre-existing autoimmune disordersAnti-PD1 monoclonal antibodiesImpact of nivolumabPhase 1b studyKey secondary endpointPhase Ib studySerious adverse eventsDose-limiting toxicityInflammatory bowel diseasePD-L1 antibodiesSeverity IndexSystemic lupus erythematosusDysfunctional immune systemClinical Trials NetworkTissue-based biomarkersSpecific eligibility criteriaICI therapyPrimary endpointSecondary endpointsNivolumab and stereotactic radiosurgery for patients with breast cancer brain metastases: A non-randomized, open-label phase Ib study.
Ahmed K, Kim Y, Arrington J, Kim S, DeJesus M, Soyano A, Armaghani A, Costa R, Khong H, Rosa M, Caudell J, Diaz R, Robinson T, Etame A, Tran N, Sahebjam S, Soliman H, Forsyth P, Yu H, Han H. Nivolumab and stereotactic radiosurgery for patients with breast cancer brain metastases: A non-randomized, open-label phase Ib study. Journal Of Clinical Oncology 2021, 39: e14010-e14010. DOI: 10.1200/jco.2021.39.15_suppl.e14010.Peer-Reviewed Original ResearchBreast cancer brain metastasesCancer brain metastasesProgression-free survivalBrain metastasesStereotactic radiosurgeryBrain metastasis controlStudy therapyControl rateMetastasis controlCertain breast cancer patientsNeuro-Oncology Brain MetastasesSystemic progression-free survivalDose of nivolumabNeurologic adverse eventsImmune checkpoint inhibitionPhase Ib studyPhase Ib trialSolid Tumors criteriaResponse Evaluation CriteriaKey eligibility criteriaTumor control rateFeasible treatment optionBreast cancer patientsBrain metastasis managementExtracranial diseaseFirst results of a randomized phase IB study comparing nivolumab/ipilimumab with or without CBM-588 in patients with metastatic renal cell carcinoma.
Meza L, Dizman N, Bergerot P, Dorff T, Lyou Y, Frankel P, Mira V, Llamas M, Hsu J, Zengin Z, Salgia N, Salgia S, Malhotra J, Chawla N, Chehrazi-Raffle A, Gillece J, Reining L, Trent J, Highlander S, Pal S. First results of a randomized phase IB study comparing nivolumab/ipilimumab with or without CBM-588 in patients with metastatic renal cell carcinoma. Journal Of Clinical Oncology 2021, 39: 4513-4513. DOI: 10.1200/jco.2021.39.15_suppl.4513.Peer-Reviewed Original ResearchMetastatic renal cell carcinomaProgression-free survivalNivolumab/ipilimumabRenal cell carcinomaCBM 588Response rateClinical outcomesWeek 12Cell carcinomaSarcomatoid Metastatic Renal Cell CarcinomaMedian progression-free survivalGut microbiomeGrade 3/4 toxicitiesPhase Ib studyKey eligibility criteriaDiagnosis of sarcomaIMDC criteriaEvaluable patientsPrimary endpointSecondary endpointsICI responseMetastatic diseaseSarcomatoid featuresIntermediate riskMedian age
2020
A Phase Ib Study of Onvansertib, a Novel Oral PLK1 Inhibitor, in Combination Therapy for Patients with Relapsed or Refractory Acute Myeloid Leukemia
Zeidan AM, Ridinger M, Lin TL, Becker PS, Schiller GJ, Patel PA, Spira AI, Tsai ML, Samuëlsz E, Silberman SL, Erlander M, Wang ES. A Phase Ib Study of Onvansertib, a Novel Oral PLK1 Inhibitor, in Combination Therapy for Patients with Relapsed or Refractory Acute Myeloid Leukemia. Clinical Cancer Research 2020, 26: 6132-6140. PMID: 32998961, DOI: 10.1158/1078-0432.ccr-20-2586.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedAged, 80 and overAntineoplastic Combined Chemotherapy ProtocolsCytarabineDecitabineDrug Resistance, NeoplasmFemaleFollow-Up StudiesHumansLeukemia, Myeloid, AcuteMaleMaximum Tolerated DoseMiddle AgedNeoplasm Recurrence, LocalPiperazinesPrognosisPyrazolesQuinazolinesSalvage TherapyConceptsAcute myeloid leukemiaPhase Ib studyMyeloid leukemiaIb studyRefractory (R/R) AMLFirst-cycle dose-limiting toxicitiesRefractory acute myeloid leukemiaOngoing phase II trialAntileukemic activityMost grade 3Low-dose cytarabinePhase II trialBone marrow blastsDose-limiting toxicityPLK1 inhibitorsPolo-like kinase 1Evaluable patientsExploratory endpointsComplete remissionII trialPrimary endpointAdverse eventsClinical responseMarrow blastsCount recovery
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