Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2010-12-3
pubmed:abstractText
Pathological complete response (pCR) to neoadjuvant treatment correlates with outcome in breast cancer. We determined whether characteristics of neoadjuvant therapy are associated with pCR. We used multi-level models, which accounted for heterogeneity in pCR across trials and trial arms, to analyze individual patient data from 3332 women included in 7 German neoadjuvant trials with uniform protocols. PCR was associated with an increase in number of chemotherapy cycles (odds ratio [OR] 1.2 for every two additional cycles; P = 0.009), with higher cumulative anthracycline doses (OR 1.6; P = 0.002), higher cumulative taxane doses (OR 1.6; P = 0.009), and with capecitabine containing regimens (OR 1.62; P = 0.022). Association of pCR with increase in number of cycles appeared more pronounced in hormone receptor (HR)-positive tumors (OR 1.35) than in HR-negative tumors (OR 1.04; P for interaction = 0.046). Effect of anthracycline dose was particularly pronounced in HER2-negative tumors (OR 1.61), compared to HER2-positive tumors (OR 0.83; P for interaction = 0.14). Simultaneous trastuzumab treatment in HER2-positive tumors increased odds of pCR 3.2-fold (P < 0.001). No association of pCR and number of trastuzumab cycles was found (OR 1.20, P = 0.39). Dosing characteristics appear important for successful treatment of breast cancer. Longer treatment, higher cumulative doses of anthracyclines and taxanes, and the addition of capecitabine and trastuzumab are associated with better response. Tailoring according to breast cancer phenotype might be possible: longer treatment in HR-positive tumors, higher cumulative anthracycline doses for HER2-negative tumors, shorter treatment at higher cumulative doses for triple-negative tumors, and limited number of preoperative trastuzumab cycles in HER2-positive tumors.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
1573-7217
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
125
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
145-56
pubmed:meshHeading
pubmed-meshheading:21042932-Adult, pubmed-meshheading:21042932-Antineoplastic Combined Chemotherapy Protocols, pubmed-meshheading:21042932-Breast Neoplasms, pubmed-meshheading:21042932-Chemotherapy, Adjuvant, pubmed-meshheading:21042932-Clinical Trials as Topic, pubmed-meshheading:21042932-Dose-Response Relationship, Drug, pubmed-meshheading:21042932-Female, pubmed-meshheading:21042932-Germany, pubmed-meshheading:21042932-Humans, pubmed-meshheading:21042932-Logistic Models, pubmed-meshheading:21042932-Middle Aged, pubmed-meshheading:21042932-Neoadjuvant Therapy, pubmed-meshheading:21042932-Odds Ratio, pubmed-meshheading:21042932-Patient Selection, pubmed-meshheading:21042932-Phenotype, pubmed-meshheading:21042932-Risk Assessment, pubmed-meshheading:21042932-Risk Factors, pubmed-meshheading:21042932-Treatment Outcome, pubmed-meshheading:21042932-Tumor Markers, Biological
pubmed:year
2011
pubmed:articleTitle
Impact of treatment characteristics on response of different breast cancer phenotypes: pooled analysis of the German neo-adjuvant chemotherapy trials.
pubmed:affiliation
German Breast Group, c/o GBG Forschungs GmbH, Martin-Behaim-Str. 12, 63263 Neu-Isenburg, Germany. gunter.vonminckwitz@germanbreastgroup.de
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't, Meta-Analysis