Intrinsic subtypes, PIK3CA mutation, and the degree of benefit from adjuvant trastuzumab in the NSABP B-31 trial. (Record no. 1595)

MARC details
000 -LEADER
fixed length control field 04229nam a22005657a 4500
008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION
fixed length control field 160113s20152015 xxu||||| |||| 00| 0 eng d
022 ## - INTERNATIONAL STANDARD SERIAL NUMBER
International Standard Serial Number 0732-183X
040 ## - CATALOGING SOURCE
Original cataloging agency Ovid MEDLINE(R)
099 ## - LOCAL FREE-TEXT CALL NUMBER (OCLC)
PMID 25559813
245 ## - TITLE STATEMENT
Title Intrinsic subtypes, PIK3CA mutation, and the degree of benefit from adjuvant trastuzumab in the NSABP B-31 trial.
251 ## - Source
Source Journal of Clinical Oncology. 33(12):1340-7, 2015 Apr 20.
252 ## - Abbreviated Source
Abbreviated source J Clin Oncol. 33(12):1340-7, 2015 Apr 20.
253 ## - Journal Name
Journal name Journal of clinical oncology : official journal of the American Society of Clinical Oncology
260 ## - PUBLICATION, DISTRIBUTION, ETC.
Year 2015
260 ## - PUBLICATION, DISTRIBUTION, ETC.
Manufacturer FY2015
266 ## - Date added to catalog
Date added to catalog 2016-01-13
501 ## - WITH NOTE
Local holdings Available online from MWHC library: 1999 - present, Available in print through MWHC library: 1999 - 2008
520 ## - SUMMARY, ETC.
Abstract CONCLUSION: Unlike results seen in the metastatic and neoadjuvant clinical trials, PIK3CA and PAM50 intrinsic subtypes were not predictive biomarkers for adjuvant trastuzumab in NSABP B-31. These data suggest that results from the metastatic and neoadjuvant setting may not be always applicable to the adjuvant setting.Copyright � 2015 by American Society of Clinical Oncology.
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Abstract PATIENTS AND METHODS: Expression data for 49 genes using the nCounter platform were used to generate PAM50 intrinsic subtypes for 1,578 archived tumor blocks from patients in the B-31 trial. Six PIK3CA hotspot mutations were examined by mass spectrometry of the primer extension products in a randomly selected subset (n = 671). We examined the heterogeneity of trastuzumab treatment effect across different subsets defined by each marker using Cox regression and disease-free survival as the end point.
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Abstract PURPOSE: Considerable molecular heterogeneity exists among human epidermal growth factor receptor 2 (HER2) -positive breast cancer regarding gene expression and mutation profiling. Evidence from preclinical, clinical neoadjuvant, and metastatic clinical trials suggested that PIK3CA mutational status and PAM50 intrinsic subtype of a tumor were markers of response to anti-HER2 therapies. We evaluated the predictive value of these two biomarkers in the adjuvant setting using archived tumor blocks from National Surgical Adjuvant Breast and Bowel Project (NSABP) trial B-31.
520 ## - SUMMARY, ETC.
Abstract RESULTS: Seven hundred forty-one (47.0%) of 1,578 tumors were classified as HER2-enriched (HER2E) subtype, and 166 (24.7%) of 671 tumors had PIK3CA mutations. Hazard ratios (HRs) for trastuzumab in HER2E and other subtypes were 0.44 (95% CI, 0.34 to 0.58; P < .001) and 0.47 (95% CI, 0.35 to 0.62; P < .001), respectively (interaction P = .67). HRs for trastuzumab in PIK3CA wild-type and mutated tumors were 0.51 (95% CI, 0.37 to 0.71; P < .001) and 0.44 (95% CI, 0.24 to 0.82; P = .009), respectively (interaction P = .64).
546 ## - LANGUAGE NOTE
Language note English
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element *Antibodies, Monoclonal, Humanized/ad [Administration & Dosage]
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element *Breast Neoplasms/dt [Drug Therapy]
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Topical term or geographic name entry element *Breast Neoplasms/ge [Genetics]
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Topical term or geographic name entry element *Mutation
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Topical term or geographic name entry element *Phosphatidylinositol 3-Kinases/ge [Genetics]
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element Antineoplastic Agents/ad [Administration & Dosage]
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element Breast Neoplasms/en [Enzymology]
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element Breast Neoplasms/pa [Pathology]
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Topical term or geographic name entry element Chemotherapy, Adjuvant
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Topical term or geographic name entry element Disease-Free Survival
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element Drug Resistance, Neoplasm
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element Female
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element Gene Expression Profiling
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element Humans
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element Neoplasm Staging
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element Predictive Value of Tests
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element Randomized Controlled Trials as Topic
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Topical term or geographic name entry element Receptor, ErbB-2
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Topical term or geographic name entry element Tumor Markers, Biological/ge [Genetics]
651 ## - SUBJECT ADDED ENTRY--GEOGRAPHIC NAME
Institution Washington Cancer Institute
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Medline publication type Journal Article
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Medline publication type Research Support, N.I.H., Extramural
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Medline publication type Research Support, Non-U.S. Gov't
700 ## - ADDED ENTRY--PERSONAL NAME
Local Authors Swain, Sandra M
790 ## - Authors
All authors Blackmon NL, Costantino JP, Fehrenbacher L, Finnigan M, Gavin PG, Geyer CE Jr, Jeong JH, Kim SR, Mamounas EP, Paik S, Pogue-Geile KL, Rastogi P, Song N, Swain SM, Wickerham DL, Wolmark N
856 ## - ELECTRONIC LOCATION AND ACCESS
DOI <a href="http://dx.doi.org/10.1200/JCO.2014.56.2439">http://dx.doi.org/10.1200/JCO.2014.56.2439</a>
Public note http://dx.doi.org/10.1200/JCO.2014.56.2439
942 ## - ADDED ENTRY ELEMENTS (KOHA)
Koha item type Journal Article
Item type description Article
Holdings
Withdrawn status Lost status Damaged status Not for loan Collection Home library Current library Date acquired Total Checkouts Full call number Barcode Date last seen Price effective from Koha item type
          MedStar Authors Catalog MedStar Authors Catalog 01/13/2016   25559813 25559813 01/13/2016 01/13/2016 Journal Article

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