Yalai Bai, PhD, MD
Research ScientistCards
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Research
Publications
2025
Machine learning-based spatial characterization of tumor-immune microenvironment in the EORTC 10994/BIG 1-00 early breast cancer trial
Zerdes I, Matikas A, Mezheyeuski A, Manikis G, Acs B, Johansson H, Boyaci C, Boman C, Poncet C, Ignatiadis M, Bai Y, Rimm D, Cameron D, Bonnefoi H, Bergh J, MacGrogan G, Foukakis T. Machine learning-based spatial characterization of tumor-immune microenvironment in the EORTC 10994/BIG 1-00 early breast cancer trial. Npj Breast Cancer 2025, 11: 23. PMID: 40055382, DOI: 10.1038/s41523-025-00730-1.Peer-Reviewed Original ResearchPathological complete responseAssociated with pathologic complete responseBreast cancerTriple-negativeCD8+ T cell expressionImmune infiltrate characterizationPretreatment tumor biopsiesTP53-mutated tumorsTumor immune microenvironmentTumor microenvironment componentsT cell expressionImmune cell subsetsTumors of patientsTumor-host interactionsBreast cancer trialsNeoadjuvant trialsComplete responseTN tumorsCD4+Tumor biopsiesCell subsetsPrognostic correlationPrognostic implicationsImmune infiltrationMultiplex immunofluorescence
2024
The analytical and clinical validity of AI algorithms to score TILs in TNBC: can we use different machine learning models interchangeably?
Vidal J, Tsiknakis N, Staaf J, Bosch A, Ehinger A, Nimeus E, Salgado R, Bai Y, Rimm D, Hartman J, Acs B. The analytical and clinical validity of AI algorithms to score TILs in TNBC: can we use different machine learning models interchangeably? EClinicalMedicine 2024, 78: 102928. PMID: 39634035, PMCID: PMC11615110, DOI: 10.1016/j.eclinm.2024.102928.Peer-Reviewed Original ResearchTriple-negative breast cancerTumor-infiltrating lymphocytesBreast Cancer Research FoundationPrognostic validityMetastatic triple-negative breast cancerDisease-free survival endpointsHazard ratioHost anti-tumor immunityScored tumor infiltrating lymphocytesTumor-infiltrating lymphocyte scoresTriple-negative breast cancer patientsYears median follow-upTumour-infiltrating lymphocyte assessmentAnti-tumor immunityMedian follow-upIndependent prospective cohortTNBC tumorsPrognostic potentialProspective cohortBreast cancerPrognostic performanceAnalytic cohortFollow-upSchool of MedicineSwedish Society for Medical ResearchAn algorithm for standardization of tumor Infiltrating lymphocyte evaluation in head and neck cancers
Xirou V, Moutafi M, Bai Y, Nwe Aung T, Burela S, Liu M, Kimple R, Shabbir Ahmed F, Schultz B, Flieder D, Connolly D, Psyrri A, Burtness B, Rimm D. An algorithm for standardization of tumor Infiltrating lymphocyte evaluation in head and neck cancers. Oral Oncology 2024, 152: 106750. PMID: 38547779, PMCID: PMC11060915, DOI: 10.1016/j.oraloncology.2024.106750.Peer-Reviewed Original ResearchConceptsTumor-infiltrating lymphocytesHead and neck cancerTILs evaluationHPV-positiveNeck cancerPrognostic valueHead and neck squamous cell cancer casesTIL variablesAssociated with favorable prognosisHPV-negative headHPV-negative populationHematoxylin-eosin-stained sectionsCox regression analysisPotential clinical implicationsInter-observer variabilityInfiltrating lymphocytesClinicopathological factorsFavorable prognosisValidation cohortTumor cellsCancer casesProspective settingQuPath softwareRetrospective collectionPredictive significance
2023
309P Machine learning-based characterization of tumor-immune microenvironment at a spatial and multiplexed resolution in early breast cancer: A sub-study of the EORTC 10994/BIG 1-00 randomized phase III trial with long-term follow-up
Zerdes I, Matikas A, Mezheyeuski A, Acs B, Johansson H, Manikis G, Boyaci C, Boman C, Poncet C, Ignatiadis M, Bai Y, Rimm D, MacGrogan G, Cameron D, Bergh J, Bonnefoi H, Foukakis T. 309P Machine learning-based characterization of tumor-immune microenvironment at a spatial and multiplexed resolution in early breast cancer: A sub-study of the EORTC 10994/BIG 1-00 randomized phase III trial with long-term follow-up. Annals Of Oncology 2023, 34: s307-s308. DOI: 10.1016/j.annonc.2023.09.505.Peer-Reviewed Original ResearchImage analysis-based tumor infiltrating lymphocytes measurement predicts breast cancer pathologic complete response in SWOG S0800 neoadjuvant chemotherapy trial
Fanucci K, Bai Y, Pelekanou V, Nahleh Z, Shafi S, Burela S, Barlow W, Sharma P, Thompson A, Godwin A, Rimm D, Hortobagyi G, Liu Y, Wang L, Wei W, Pusztai L, Blenman K. Image analysis-based tumor infiltrating lymphocytes measurement predicts breast cancer pathologic complete response in SWOG S0800 neoadjuvant chemotherapy trial. Npj Breast Cancer 2023, 9: 38. PMID: 37179362, PMCID: PMC10182981, DOI: 10.1038/s41523-023-00535-0.Peer-Reviewed Original ResearchPathologic complete responseBreast cancerComplete responseTIL scoreBreast Cancer Pathologic Complete ResponseTumor-infiltrating lymphocyte scoresEvent-free survivalNeoadjuvant chemotherapy trialsLymphocyte measurementsLymphocyte scoreNeoadjuvant chemotherapyChemotherapy trialsMean pretreatmentResidual diseaseTIL quantificationPredictive valuePretreatment samplesResponse discriminationScoresStrong positive correlationPositive correlation
2022
Quantitative measurement of HER2 expression to subclassify ERBB2 unamplified breast cancer.
Moutafi M, Robbins C, Yaghoobi V, Fernandez A, Martinez-Morilla S, Xirou V, Bai Y, Song Y, Gaule P, Krueger J, Bloom K, Hill S, Liebler D, Fulton R, Rimm D. Quantitative measurement of HER2 expression to subclassify ERBB2 unamplified breast cancer. Laboratory Investigation 2022, 102: 1101-1108. PMID: 36775350, DOI: 10.1038/s41374-022-00804-9.Peer-Reviewed Original ResearchConceptsHER2 expressionBreast cancerAttomol/HER2 proteinBreast cancer patientsBreast cancer casesOptimal patient careLevels of HER2Trastuzumab deruxtecanT-DXdCancer patientsLow HER2Cancer casesConventional assaysHER2Patient careAntibody concentrationsQuantitative immunofluorescenceAntibody drugsCancerCell linesAssaysExpressionHER2 detectionLower range
2021
An Open Source, Automated Tumor Infiltrating Lymphocyte Algorithm for Prognosis in Triple-Negative Breast Cancer
Bai Y, Cole K, Martinez-Morilla S, Ahmed FS, Zugazagoitia J, Staaf J, Bosch A, Ehinger A, Nimeus E, Hartman J, Acs B, Rimm DL. An Open Source, Automated Tumor Infiltrating Lymphocyte Algorithm for Prognosis in Triple-Negative Breast Cancer. Clinical Cancer Research 2021, 27: clincanres.0325.2021. PMID: 34088723, PMCID: PMC8530841, DOI: 10.1158/1078-0432.ccr-21-0325.Peer-Reviewed Original ResearchA new tool for technical standardization of the Ki67 immunohistochemical assay
Aung TN, Acs B, Warrell J, Bai Y, Gaule P, Martinez-Morilla S, Vathiotis I, Shafi S, Moutafi M, Gerstein M, Freiberg B, Fulton R, Rimm DL. A new tool for technical standardization of the Ki67 immunohistochemical assay. Modern Pathology 2021, 34: 1261-1270. PMID: 33536573, PMCID: PMC8222064, DOI: 10.1038/s41379-021-00745-6.Peer-Reviewed Original Research
2018
Ki67 reproducibility using digital image analysis: an inter-platform and inter-operator study
Acs B, Pelekanou V, Bai Y, Martinez-Morilla S, Toki M, Leung SCY, Nielsen TO, Rimm DL. Ki67 reproducibility using digital image analysis: an inter-platform and inter-operator study. Laboratory Investigation 2018, 99: 107-117. PMID: 30181553, DOI: 10.1038/s41374-018-0123-7.Peer-Reviewed Original ResearchAn international multicenter study to evaluate reproducibility of automated scoring for assessment of Ki67 in breast cancer
Rimm DL, Leung SCY, McShane LM, Bai Y, Bane AL, Bartlett JMS, Bayani J, Chang MC, Dean M, Denkert C, Enwere EK, Galderisi C, Gholap A, Hugh JC, Jadhav A, Kornaga EN, Laurinavicius A, Levenson R, Lima J, Miller K, Pantanowitz L, Piper T, Ruan J, Srinivasan M, Virk S, Wu Y, Yang H, Hayes DF, Nielsen TO, Dowsett M. An international multicenter study to evaluate reproducibility of automated scoring for assessment of Ki67 in breast cancer. Modern Pathology 2018, 32: 59-69. PMID: 30143750, DOI: 10.1038/s41379-018-0109-4.Peer-Reviewed Original ResearchConceptsIntraclass correlation coefficientBreast cancerBreast Cancer Working GroupAssessment of Ki67Pre-specified analysisCancer Working GroupInternational multicenter studyMulticenter studySubsequent clinical validationInternational Ki67Biopsy sectionsClinical valueBiomarker Ki67Breast tumorsKi67 immunohistochemistryEvaluation of reproducibilityKi67Clinical validationTumor cellsObserved intraclass correlation coefficientScoring methodCorrelation coefficientKi67 scoringMaximum scoreCancer
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