Analysis of HER2 expression changes from breast primary to brain metastases and the impact of HER2-low expression on overall survival
Pereslete A, Hughes M, Martin A, Files J, Nguyen K, Buckley L, Patel A, Moore A, Winer E, Dillon D, Li T, Tolaney S, Lin N, Sammons S. Analysis of HER2 expression changes from breast primary to brain metastases and the impact of HER2-low expression on overall survival. Neuro-Oncology 2024, noae163. PMID: 39211994, DOI: 10.1093/neuonc/noae163.Peer-Reviewed Original ResearchHER2-low expressionHER2-lowMetastatic breast cancerHER2-positiveHER2 expressionHER2-0Primary tumorBrain metastasesEstrogen receptorBreast cancerHER2-positive primary tumorsASCO-CAP guidelinesNCI-designated centersMultivariate survival analysisCox proportional hazards modelsAntibody-drug conjugatesProportional hazards modelActive antibody-drug conjugateASCO-CAPHER2 gainHER2 statusInferior survivalOverall survivalIntracranial activityRetrospective analysisTBCRC 048 (olaparib expanded) expansion cohorts: Phase 2 study of olaparib monotherapy in patients (pts) with metastatic breast cancer (MBC) with germline (g) mutations in PALB2 or somatic (s) mutations in BRCA1 or BRCA2.
Tung N, Robson M, Nanda R, Li T, Vinayak S, Shah P, Khoury K, Kimmick G, Santa-Maria C, Brufsky A, DeMeo M, Vieira J, Carey L, Wulf G, Domchek S, Krop I, Wolff A, Winer E, Garber J. TBCRC 048 (olaparib expanded) expansion cohorts: Phase 2 study of olaparib monotherapy in patients (pts) with metastatic breast cancer (MBC) with germline (g) mutations in PALB2 or somatic (s) mutations in BRCA1 or BRCA2. Journal Of Clinical Oncology 2024, 42: 1021-1021. DOI: 10.1200/jco.2024.42.16_suppl.1021.Peer-Reviewed Original ResearchProgression-free survivalDuration of responseMetastatic breast cancerClinical benefit rateTriple-negative breast cancerMedian duration of responseMedian progression-free survivalMutant allele frequencyExpansion cohortHER2-negativeHER2-positiveCohort 2aNon-respondersBreast cancerEarly due to slow enrollmentMetastatic chemotherapy regimensResponse to olaparibPhase 2 studyPhase II trialKaplan-Meier methodPredictors of responseCohort of womenWilcoxon rank sum testRank sum testBRCA1m