0000000000971492

AUTHOR

Mohamed Amine Bayar

0000-0002-9513-900x

showing 1 related works from this author

ER+ Breast Cancers Resistant to Prolonged Neoadjuvant Letrozole Exhibit an E2F4 Transcriptional Program Sensitive to CDK4/6 Inhibitors

2018

AbstractPurpose: This study aimed to identify biomarkers of resistance to endocrine therapy in estrogen receptor–positive (ER+) breast cancers treated with prolonged neoadjuvant letrozole.Experimental Design: We performed targeted DNA and RNA sequencing in 68 ER+ breast cancers from patients treated with preoperative letrozole (median, 7 months).Results: Twenty-four tumors (35%) exhibited a PEPI score ≥4 and/or recurred after a median of 58 months and were considered endocrine resistant. Integration of the 47 most upregulated genes (log FC > 1, FDR < 0.03) in letrozole-resistant tumors with transcription-binding data showed significant overlap with 20 E2F4-regulated genes (P =…

0301 basic medicineCancer ResearchBreast NeoplasmsE2F4 Transcription FactorArticle03 medical and health sciences0302 clinical medicineText miningDownregulation and upregulationCell Line TumorBiomarkers TumormedicineHumansEndocrine systemProtein Kinase InhibitorsE2F4GeneAgedCell ProliferationAged 80 and overAromatase Inhibitorsbusiness.industryGene Expression ProfilingLetrozoleEndocrine therapyComputational BiologyMiddle AgedEMTREE drug terms: aromatase inhibitorcyclin dependent kinase 4cyclin dependent kinase 6cyclin dependent kinase inhibitorfulvestrantletrozolepaclitaxelpalbociclibtranscription factor E2F4estrogen receptorletrozoleprotein kinase inhibitortranscription factor E2F4transcriptometumor marker030104 developmental biologyReceptors EstrogenOncologyDrug Resistance Neoplasm030220 oncology & carcinogenesisLetrozoleMutationRetreatmentCancer researchFemaleTranscriptomebusinessmedicine.drug
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