Serveur d'exploration sur les relations entre la France et l'Australie

Attention, ce site est en cours de développement !
Attention, site généré par des moyens informatiques à partir de corpus bruts.
Les informations ne sont donc pas validées.

Relative Effectiveness of Letrozole Compared With Tamoxifen for Patients With Lobular Carcinoma in the BIG 1-98 Trial

Identifieur interne : 000461 ( Pmc/Corpus ); précédent : 000460; suivant : 000462

Relative Effectiveness of Letrozole Compared With Tamoxifen for Patients With Lobular Carcinoma in the BIG 1-98 Trial

Auteurs : Otto Metzger Filho ; Anita Giobbie-Hurder ; Elizabeth Mallon ; Barry Gusterson ; Giuseppe Viale ; Eric P. Winer ; Beat Thürlimann ; Richard D. Gelber ; Marco Colleoni ; Bent Ejlertsen ; Marc Debled ; Karen N. Price ; Meredith M. Regan ; Alan S. Coates ; Aron Goldhirsch

Source :

RBID : PMC:4550691

Abstract

Purpose

To evaluate the relative effectiveness of letrozole compared with tamoxifen for patients with invasive ductal or lobular carcinoma.

Patients and Methods

Patients diagnosed with early-stage invasive ductal carcinoma (IDC) or classic invasive lobular carcinoma (ILC) who were randomly assigned onto the Breast International Group (BIG) 1-98 trial and who had centrally reviewed pathology data were included (N = 2,923). HER2-negative IDC and ILC were additionally classified as hormone receptor–positive with high (luminal B [LB] –like) or low (luminal A [LA] –like) proliferative activity by Ki-67 labeling index. Survival analyses were performed with weighted Cox models that used inverse probability of censoring weighted modeling.

Results

The median follow-up time was 8.1 years. In multivariable models for disease-free survival (DFS), significant interactions between treatment and histology (ILC or IDC; P = .006) and treatment and subgroup (LB like or LA like; P = .01) were observed. In the ILC subset, there was a 66% reduction in the hazard of a DFS event with letrozole for LB (hazard ratio [HR], 0.34; 95% CI, 0.21 to 0.55) and a 50% reduction for LA subtypes (HR, 0.50; 95% CI, 0.32 to 0.78). In the IDC subset, there was a significant 35% reduction in the hazard of a DFS event with letrozole for the LB subtype (HR, 0.65; 95% CI, 0.53 to 0.79), but no difference between treatments was noted for IDC and the LA subtype (HR, 0.95; 95% CI, 0.76 to 1.20).

Conclusion

The magnitude of benefit of adjuvant letrozole is greater for patients diagnosed with lobular carcinoma versus ductal carcinoma.


Url:
DOI: 10.1200/JCO.2015.60.8133
PubMed: 26215945
PubMed Central: 4550691

Links to Exploration step

PMC:4550691

Le document en format XML

<record>
<TEI>
<teiHeader>
<fileDesc>
<titleStmt>
<title xml:lang="en">Relative Effectiveness of Letrozole Compared With Tamoxifen for Patients With Lobular Carcinoma in the BIG 1-98 Trial</title>
<author>
<name sortKey="Metzger Filho, Otto" sort="Metzger Filho, Otto" uniqKey="Metzger Filho O" first="Otto" last="Metzger Filho">Otto Metzger Filho</name>
<affiliation>
<nlm:aff id="aff1">Otto Metzger Filho, Anita Giobbie-Hurder, and Eric P. Winer, Dana-Farber Cancer Institute; Richard D. Gelber and Meredith M. Regan, Harvard Medical School; Karen N. Price, Frontier Science and Technology Research, Boston, MA; Elizabeth Mallon, Southern General Hospital; Barry Gusterson, Institute of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom; Giuseppe Viale, European Institute of Oncology and University of Milan; Marco Colleoni and Aron Goldhirsch, European Institute of Oncology, Milan, Italy; Beat Thürlimann, Kantonsspital, St. Gallen, and Swiss Group for Clinical Cancer Research, Bern, Switzerland; Bent Ejlertsen, Rigshospitalet, Copenhagen, Denmark; Marc Debled, Institut Bergoniié, Bordeaux, France; and Alan S. Coates, International Breast Cancer Study Group, Bern, Switzerland, and University of Sydney, Sydney, Australia.</nlm:aff>
</affiliation>
</author>
<author>
<name sortKey="Giobbie Hurder, Anita" sort="Giobbie Hurder, Anita" uniqKey="Giobbie Hurder A" first="Anita" last="Giobbie-Hurder">Anita Giobbie-Hurder</name>
<affiliation>
<nlm:aff id="aff1">Otto Metzger Filho, Anita Giobbie-Hurder, and Eric P. Winer, Dana-Farber Cancer Institute; Richard D. Gelber and Meredith M. Regan, Harvard Medical School; Karen N. Price, Frontier Science and Technology Research, Boston, MA; Elizabeth Mallon, Southern General Hospital; Barry Gusterson, Institute of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom; Giuseppe Viale, European Institute of Oncology and University of Milan; Marco Colleoni and Aron Goldhirsch, European Institute of Oncology, Milan, Italy; Beat Thürlimann, Kantonsspital, St. Gallen, and Swiss Group for Clinical Cancer Research, Bern, Switzerland; Bent Ejlertsen, Rigshospitalet, Copenhagen, Denmark; Marc Debled, Institut Bergoniié, Bordeaux, France; and Alan S. Coates, International Breast Cancer Study Group, Bern, Switzerland, and University of Sydney, Sydney, Australia.</nlm:aff>
</affiliation>
</author>
<author>
<name sortKey="Mallon, Elizabeth" sort="Mallon, Elizabeth" uniqKey="Mallon E" first="Elizabeth" last="Mallon">Elizabeth Mallon</name>
<affiliation>
<nlm:aff id="aff1">Otto Metzger Filho, Anita Giobbie-Hurder, and Eric P. Winer, Dana-Farber Cancer Institute; Richard D. Gelber and Meredith M. Regan, Harvard Medical School; Karen N. Price, Frontier Science and Technology Research, Boston, MA; Elizabeth Mallon, Southern General Hospital; Barry Gusterson, Institute of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom; Giuseppe Viale, European Institute of Oncology and University of Milan; Marco Colleoni and Aron Goldhirsch, European Institute of Oncology, Milan, Italy; Beat Thürlimann, Kantonsspital, St. Gallen, and Swiss Group for Clinical Cancer Research, Bern, Switzerland; Bent Ejlertsen, Rigshospitalet, Copenhagen, Denmark; Marc Debled, Institut Bergoniié, Bordeaux, France; and Alan S. Coates, International Breast Cancer Study Group, Bern, Switzerland, and University of Sydney, Sydney, Australia.</nlm:aff>
</affiliation>
</author>
<author>
<name sortKey="Gusterson, Barry" sort="Gusterson, Barry" uniqKey="Gusterson B" first="Barry" last="Gusterson">Barry Gusterson</name>
<affiliation>
<nlm:aff id="aff1">Otto Metzger Filho, Anita Giobbie-Hurder, and Eric P. Winer, Dana-Farber Cancer Institute; Richard D. Gelber and Meredith M. Regan, Harvard Medical School; Karen N. Price, Frontier Science and Technology Research, Boston, MA; Elizabeth Mallon, Southern General Hospital; Barry Gusterson, Institute of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom; Giuseppe Viale, European Institute of Oncology and University of Milan; Marco Colleoni and Aron Goldhirsch, European Institute of Oncology, Milan, Italy; Beat Thürlimann, Kantonsspital, St. Gallen, and Swiss Group for Clinical Cancer Research, Bern, Switzerland; Bent Ejlertsen, Rigshospitalet, Copenhagen, Denmark; Marc Debled, Institut Bergoniié, Bordeaux, France; and Alan S. Coates, International Breast Cancer Study Group, Bern, Switzerland, and University of Sydney, Sydney, Australia.</nlm:aff>
</affiliation>
</author>
<author>
<name sortKey="Viale, Giuseppe" sort="Viale, Giuseppe" uniqKey="Viale G" first="Giuseppe" last="Viale">Giuseppe Viale</name>
<affiliation>
<nlm:aff id="aff1">Otto Metzger Filho, Anita Giobbie-Hurder, and Eric P. Winer, Dana-Farber Cancer Institute; Richard D. Gelber and Meredith M. Regan, Harvard Medical School; Karen N. Price, Frontier Science and Technology Research, Boston, MA; Elizabeth Mallon, Southern General Hospital; Barry Gusterson, Institute of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom; Giuseppe Viale, European Institute of Oncology and University of Milan; Marco Colleoni and Aron Goldhirsch, European Institute of Oncology, Milan, Italy; Beat Thürlimann, Kantonsspital, St. Gallen, and Swiss Group for Clinical Cancer Research, Bern, Switzerland; Bent Ejlertsen, Rigshospitalet, Copenhagen, Denmark; Marc Debled, Institut Bergoniié, Bordeaux, France; and Alan S. Coates, International Breast Cancer Study Group, Bern, Switzerland, and University of Sydney, Sydney, Australia.</nlm:aff>
</affiliation>
</author>
<author>
<name sortKey="Winer, Eric P" sort="Winer, Eric P" uniqKey="Winer E" first="Eric P." last="Winer">Eric P. Winer</name>
<affiliation>
<nlm:aff id="aff1">Otto Metzger Filho, Anita Giobbie-Hurder, and Eric P. Winer, Dana-Farber Cancer Institute; Richard D. Gelber and Meredith M. Regan, Harvard Medical School; Karen N. Price, Frontier Science and Technology Research, Boston, MA; Elizabeth Mallon, Southern General Hospital; Barry Gusterson, Institute of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom; Giuseppe Viale, European Institute of Oncology and University of Milan; Marco Colleoni and Aron Goldhirsch, European Institute of Oncology, Milan, Italy; Beat Thürlimann, Kantonsspital, St. Gallen, and Swiss Group for Clinical Cancer Research, Bern, Switzerland; Bent Ejlertsen, Rigshospitalet, Copenhagen, Denmark; Marc Debled, Institut Bergoniié, Bordeaux, France; and Alan S. Coates, International Breast Cancer Study Group, Bern, Switzerland, and University of Sydney, Sydney, Australia.</nlm:aff>
</affiliation>
</author>
<author>
<name sortKey="Thurlimann, Beat" sort="Thurlimann, Beat" uniqKey="Thurlimann B" first="Beat" last="Thürlimann">Beat Thürlimann</name>
<affiliation>
<nlm:aff id="aff1">Otto Metzger Filho, Anita Giobbie-Hurder, and Eric P. Winer, Dana-Farber Cancer Institute; Richard D. Gelber and Meredith M. Regan, Harvard Medical School; Karen N. Price, Frontier Science and Technology Research, Boston, MA; Elizabeth Mallon, Southern General Hospital; Barry Gusterson, Institute of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom; Giuseppe Viale, European Institute of Oncology and University of Milan; Marco Colleoni and Aron Goldhirsch, European Institute of Oncology, Milan, Italy; Beat Thürlimann, Kantonsspital, St. Gallen, and Swiss Group for Clinical Cancer Research, Bern, Switzerland; Bent Ejlertsen, Rigshospitalet, Copenhagen, Denmark; Marc Debled, Institut Bergoniié, Bordeaux, France; and Alan S. Coates, International Breast Cancer Study Group, Bern, Switzerland, and University of Sydney, Sydney, Australia.</nlm:aff>
</affiliation>
</author>
<author>
<name sortKey="Gelber, Richard D" sort="Gelber, Richard D" uniqKey="Gelber R" first="Richard D." last="Gelber">Richard D. Gelber</name>
<affiliation>
<nlm:aff id="aff1">Otto Metzger Filho, Anita Giobbie-Hurder, and Eric P. Winer, Dana-Farber Cancer Institute; Richard D. Gelber and Meredith M. Regan, Harvard Medical School; Karen N. Price, Frontier Science and Technology Research, Boston, MA; Elizabeth Mallon, Southern General Hospital; Barry Gusterson, Institute of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom; Giuseppe Viale, European Institute of Oncology and University of Milan; Marco Colleoni and Aron Goldhirsch, European Institute of Oncology, Milan, Italy; Beat Thürlimann, Kantonsspital, St. Gallen, and Swiss Group for Clinical Cancer Research, Bern, Switzerland; Bent Ejlertsen, Rigshospitalet, Copenhagen, Denmark; Marc Debled, Institut Bergoniié, Bordeaux, France; and Alan S. Coates, International Breast Cancer Study Group, Bern, Switzerland, and University of Sydney, Sydney, Australia.</nlm:aff>
</affiliation>
</author>
<author>
<name sortKey="Colleoni, Marco" sort="Colleoni, Marco" uniqKey="Colleoni M" first="Marco" last="Colleoni">Marco Colleoni</name>
<affiliation>
<nlm:aff id="aff1">Otto Metzger Filho, Anita Giobbie-Hurder, and Eric P. Winer, Dana-Farber Cancer Institute; Richard D. Gelber and Meredith M. Regan, Harvard Medical School; Karen N. Price, Frontier Science and Technology Research, Boston, MA; Elizabeth Mallon, Southern General Hospital; Barry Gusterson, Institute of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom; Giuseppe Viale, European Institute of Oncology and University of Milan; Marco Colleoni and Aron Goldhirsch, European Institute of Oncology, Milan, Italy; Beat Thürlimann, Kantonsspital, St. Gallen, and Swiss Group for Clinical Cancer Research, Bern, Switzerland; Bent Ejlertsen, Rigshospitalet, Copenhagen, Denmark; Marc Debled, Institut Bergoniié, Bordeaux, France; and Alan S. Coates, International Breast Cancer Study Group, Bern, Switzerland, and University of Sydney, Sydney, Australia.</nlm:aff>
</affiliation>
</author>
<author>
<name sortKey="Ejlertsen, Bent" sort="Ejlertsen, Bent" uniqKey="Ejlertsen B" first="Bent" last="Ejlertsen">Bent Ejlertsen</name>
<affiliation>
<nlm:aff id="aff1">Otto Metzger Filho, Anita Giobbie-Hurder, and Eric P. Winer, Dana-Farber Cancer Institute; Richard D. Gelber and Meredith M. Regan, Harvard Medical School; Karen N. Price, Frontier Science and Technology Research, Boston, MA; Elizabeth Mallon, Southern General Hospital; Barry Gusterson, Institute of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom; Giuseppe Viale, European Institute of Oncology and University of Milan; Marco Colleoni and Aron Goldhirsch, European Institute of Oncology, Milan, Italy; Beat Thürlimann, Kantonsspital, St. Gallen, and Swiss Group for Clinical Cancer Research, Bern, Switzerland; Bent Ejlertsen, Rigshospitalet, Copenhagen, Denmark; Marc Debled, Institut Bergoniié, Bordeaux, France; and Alan S. Coates, International Breast Cancer Study Group, Bern, Switzerland, and University of Sydney, Sydney, Australia.</nlm:aff>
</affiliation>
</author>
<author>
<name sortKey="Debled, Marc" sort="Debled, Marc" uniqKey="Debled M" first="Marc" last="Debled">Marc Debled</name>
<affiliation>
<nlm:aff id="aff1">Otto Metzger Filho, Anita Giobbie-Hurder, and Eric P. Winer, Dana-Farber Cancer Institute; Richard D. Gelber and Meredith M. Regan, Harvard Medical School; Karen N. Price, Frontier Science and Technology Research, Boston, MA; Elizabeth Mallon, Southern General Hospital; Barry Gusterson, Institute of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom; Giuseppe Viale, European Institute of Oncology and University of Milan; Marco Colleoni and Aron Goldhirsch, European Institute of Oncology, Milan, Italy; Beat Thürlimann, Kantonsspital, St. Gallen, and Swiss Group for Clinical Cancer Research, Bern, Switzerland; Bent Ejlertsen, Rigshospitalet, Copenhagen, Denmark; Marc Debled, Institut Bergoniié, Bordeaux, France; and Alan S. Coates, International Breast Cancer Study Group, Bern, Switzerland, and University of Sydney, Sydney, Australia.</nlm:aff>
</affiliation>
</author>
<author>
<name sortKey="Price, Karen N" sort="Price, Karen N" uniqKey="Price K" first="Karen N." last="Price">Karen N. Price</name>
<affiliation>
<nlm:aff id="aff1">Otto Metzger Filho, Anita Giobbie-Hurder, and Eric P. Winer, Dana-Farber Cancer Institute; Richard D. Gelber and Meredith M. Regan, Harvard Medical School; Karen N. Price, Frontier Science and Technology Research, Boston, MA; Elizabeth Mallon, Southern General Hospital; Barry Gusterson, Institute of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom; Giuseppe Viale, European Institute of Oncology and University of Milan; Marco Colleoni and Aron Goldhirsch, European Institute of Oncology, Milan, Italy; Beat Thürlimann, Kantonsspital, St. Gallen, and Swiss Group for Clinical Cancer Research, Bern, Switzerland; Bent Ejlertsen, Rigshospitalet, Copenhagen, Denmark; Marc Debled, Institut Bergoniié, Bordeaux, France; and Alan S. Coates, International Breast Cancer Study Group, Bern, Switzerland, and University of Sydney, Sydney, Australia.</nlm:aff>
</affiliation>
</author>
<author>
<name sortKey="Regan, Meredith M" sort="Regan, Meredith M" uniqKey="Regan M" first="Meredith M." last="Regan">Meredith M. Regan</name>
<affiliation>
<nlm:aff id="aff1">Otto Metzger Filho, Anita Giobbie-Hurder, and Eric P. Winer, Dana-Farber Cancer Institute; Richard D. Gelber and Meredith M. Regan, Harvard Medical School; Karen N. Price, Frontier Science and Technology Research, Boston, MA; Elizabeth Mallon, Southern General Hospital; Barry Gusterson, Institute of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom; Giuseppe Viale, European Institute of Oncology and University of Milan; Marco Colleoni and Aron Goldhirsch, European Institute of Oncology, Milan, Italy; Beat Thürlimann, Kantonsspital, St. Gallen, and Swiss Group for Clinical Cancer Research, Bern, Switzerland; Bent Ejlertsen, Rigshospitalet, Copenhagen, Denmark; Marc Debled, Institut Bergoniié, Bordeaux, France; and Alan S. Coates, International Breast Cancer Study Group, Bern, Switzerland, and University of Sydney, Sydney, Australia.</nlm:aff>
</affiliation>
</author>
<author>
<name sortKey="Coates, Alan S" sort="Coates, Alan S" uniqKey="Coates A" first="Alan S." last="Coates">Alan S. Coates</name>
<affiliation>
<nlm:aff id="aff1">Otto Metzger Filho, Anita Giobbie-Hurder, and Eric P. Winer, Dana-Farber Cancer Institute; Richard D. Gelber and Meredith M. Regan, Harvard Medical School; Karen N. Price, Frontier Science and Technology Research, Boston, MA; Elizabeth Mallon, Southern General Hospital; Barry Gusterson, Institute of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom; Giuseppe Viale, European Institute of Oncology and University of Milan; Marco Colleoni and Aron Goldhirsch, European Institute of Oncology, Milan, Italy; Beat Thürlimann, Kantonsspital, St. Gallen, and Swiss Group for Clinical Cancer Research, Bern, Switzerland; Bent Ejlertsen, Rigshospitalet, Copenhagen, Denmark; Marc Debled, Institut Bergoniié, Bordeaux, France; and Alan S. Coates, International Breast Cancer Study Group, Bern, Switzerland, and University of Sydney, Sydney, Australia.</nlm:aff>
</affiliation>
</author>
<author>
<name sortKey="Goldhirsch, Aron" sort="Goldhirsch, Aron" uniqKey="Goldhirsch A" first="Aron" last="Goldhirsch">Aron Goldhirsch</name>
<affiliation>
<nlm:aff id="aff1">Otto Metzger Filho, Anita Giobbie-Hurder, and Eric P. Winer, Dana-Farber Cancer Institute; Richard D. Gelber and Meredith M. Regan, Harvard Medical School; Karen N. Price, Frontier Science and Technology Research, Boston, MA; Elizabeth Mallon, Southern General Hospital; Barry Gusterson, Institute of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom; Giuseppe Viale, European Institute of Oncology and University of Milan; Marco Colleoni and Aron Goldhirsch, European Institute of Oncology, Milan, Italy; Beat Thürlimann, Kantonsspital, St. Gallen, and Swiss Group for Clinical Cancer Research, Bern, Switzerland; Bent Ejlertsen, Rigshospitalet, Copenhagen, Denmark; Marc Debled, Institut Bergoniié, Bordeaux, France; and Alan S. Coates, International Breast Cancer Study Group, Bern, Switzerland, and University of Sydney, Sydney, Australia.</nlm:aff>
</affiliation>
</author>
</titleStmt>
<publicationStmt>
<idno type="wicri:source">PMC</idno>
<idno type="pmid">26215945</idno>
<idno type="pmc">4550691</idno>
<idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4550691</idno>
<idno type="RBID">PMC:4550691</idno>
<idno type="doi">10.1200/JCO.2015.60.8133</idno>
<date when="2015">2015</date>
<idno type="wicri:Area/Pmc/Corpus">000461</idno>
<idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Corpus" wicri:corpus="PMC">000461</idno>
</publicationStmt>
<sourceDesc>
<biblStruct>
<analytic>
<title xml:lang="en" level="a" type="main">Relative Effectiveness of Letrozole Compared With Tamoxifen for Patients With Lobular Carcinoma in the BIG 1-98 Trial</title>
<author>
<name sortKey="Metzger Filho, Otto" sort="Metzger Filho, Otto" uniqKey="Metzger Filho O" first="Otto" last="Metzger Filho">Otto Metzger Filho</name>
<affiliation>
<nlm:aff id="aff1">Otto Metzger Filho, Anita Giobbie-Hurder, and Eric P. Winer, Dana-Farber Cancer Institute; Richard D. Gelber and Meredith M. Regan, Harvard Medical School; Karen N. Price, Frontier Science and Technology Research, Boston, MA; Elizabeth Mallon, Southern General Hospital; Barry Gusterson, Institute of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom; Giuseppe Viale, European Institute of Oncology and University of Milan; Marco Colleoni and Aron Goldhirsch, European Institute of Oncology, Milan, Italy; Beat Thürlimann, Kantonsspital, St. Gallen, and Swiss Group for Clinical Cancer Research, Bern, Switzerland; Bent Ejlertsen, Rigshospitalet, Copenhagen, Denmark; Marc Debled, Institut Bergoniié, Bordeaux, France; and Alan S. Coates, International Breast Cancer Study Group, Bern, Switzerland, and University of Sydney, Sydney, Australia.</nlm:aff>
</affiliation>
</author>
<author>
<name sortKey="Giobbie Hurder, Anita" sort="Giobbie Hurder, Anita" uniqKey="Giobbie Hurder A" first="Anita" last="Giobbie-Hurder">Anita Giobbie-Hurder</name>
<affiliation>
<nlm:aff id="aff1">Otto Metzger Filho, Anita Giobbie-Hurder, and Eric P. Winer, Dana-Farber Cancer Institute; Richard D. Gelber and Meredith M. Regan, Harvard Medical School; Karen N. Price, Frontier Science and Technology Research, Boston, MA; Elizabeth Mallon, Southern General Hospital; Barry Gusterson, Institute of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom; Giuseppe Viale, European Institute of Oncology and University of Milan; Marco Colleoni and Aron Goldhirsch, European Institute of Oncology, Milan, Italy; Beat Thürlimann, Kantonsspital, St. Gallen, and Swiss Group for Clinical Cancer Research, Bern, Switzerland; Bent Ejlertsen, Rigshospitalet, Copenhagen, Denmark; Marc Debled, Institut Bergoniié, Bordeaux, France; and Alan S. Coates, International Breast Cancer Study Group, Bern, Switzerland, and University of Sydney, Sydney, Australia.</nlm:aff>
</affiliation>
</author>
<author>
<name sortKey="Mallon, Elizabeth" sort="Mallon, Elizabeth" uniqKey="Mallon E" first="Elizabeth" last="Mallon">Elizabeth Mallon</name>
<affiliation>
<nlm:aff id="aff1">Otto Metzger Filho, Anita Giobbie-Hurder, and Eric P. Winer, Dana-Farber Cancer Institute; Richard D. Gelber and Meredith M. Regan, Harvard Medical School; Karen N. Price, Frontier Science and Technology Research, Boston, MA; Elizabeth Mallon, Southern General Hospital; Barry Gusterson, Institute of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom; Giuseppe Viale, European Institute of Oncology and University of Milan; Marco Colleoni and Aron Goldhirsch, European Institute of Oncology, Milan, Italy; Beat Thürlimann, Kantonsspital, St. Gallen, and Swiss Group for Clinical Cancer Research, Bern, Switzerland; Bent Ejlertsen, Rigshospitalet, Copenhagen, Denmark; Marc Debled, Institut Bergoniié, Bordeaux, France; and Alan S. Coates, International Breast Cancer Study Group, Bern, Switzerland, and University of Sydney, Sydney, Australia.</nlm:aff>
</affiliation>
</author>
<author>
<name sortKey="Gusterson, Barry" sort="Gusterson, Barry" uniqKey="Gusterson B" first="Barry" last="Gusterson">Barry Gusterson</name>
<affiliation>
<nlm:aff id="aff1">Otto Metzger Filho, Anita Giobbie-Hurder, and Eric P. Winer, Dana-Farber Cancer Institute; Richard D. Gelber and Meredith M. Regan, Harvard Medical School; Karen N. Price, Frontier Science and Technology Research, Boston, MA; Elizabeth Mallon, Southern General Hospital; Barry Gusterson, Institute of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom; Giuseppe Viale, European Institute of Oncology and University of Milan; Marco Colleoni and Aron Goldhirsch, European Institute of Oncology, Milan, Italy; Beat Thürlimann, Kantonsspital, St. Gallen, and Swiss Group for Clinical Cancer Research, Bern, Switzerland; Bent Ejlertsen, Rigshospitalet, Copenhagen, Denmark; Marc Debled, Institut Bergoniié, Bordeaux, France; and Alan S. Coates, International Breast Cancer Study Group, Bern, Switzerland, and University of Sydney, Sydney, Australia.</nlm:aff>
</affiliation>
</author>
<author>
<name sortKey="Viale, Giuseppe" sort="Viale, Giuseppe" uniqKey="Viale G" first="Giuseppe" last="Viale">Giuseppe Viale</name>
<affiliation>
<nlm:aff id="aff1">Otto Metzger Filho, Anita Giobbie-Hurder, and Eric P. Winer, Dana-Farber Cancer Institute; Richard D. Gelber and Meredith M. Regan, Harvard Medical School; Karen N. Price, Frontier Science and Technology Research, Boston, MA; Elizabeth Mallon, Southern General Hospital; Barry Gusterson, Institute of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom; Giuseppe Viale, European Institute of Oncology and University of Milan; Marco Colleoni and Aron Goldhirsch, European Institute of Oncology, Milan, Italy; Beat Thürlimann, Kantonsspital, St. Gallen, and Swiss Group for Clinical Cancer Research, Bern, Switzerland; Bent Ejlertsen, Rigshospitalet, Copenhagen, Denmark; Marc Debled, Institut Bergoniié, Bordeaux, France; and Alan S. Coates, International Breast Cancer Study Group, Bern, Switzerland, and University of Sydney, Sydney, Australia.</nlm:aff>
</affiliation>
</author>
<author>
<name sortKey="Winer, Eric P" sort="Winer, Eric P" uniqKey="Winer E" first="Eric P." last="Winer">Eric P. Winer</name>
<affiliation>
<nlm:aff id="aff1">Otto Metzger Filho, Anita Giobbie-Hurder, and Eric P. Winer, Dana-Farber Cancer Institute; Richard D. Gelber and Meredith M. Regan, Harvard Medical School; Karen N. Price, Frontier Science and Technology Research, Boston, MA; Elizabeth Mallon, Southern General Hospital; Barry Gusterson, Institute of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom; Giuseppe Viale, European Institute of Oncology and University of Milan; Marco Colleoni and Aron Goldhirsch, European Institute of Oncology, Milan, Italy; Beat Thürlimann, Kantonsspital, St. Gallen, and Swiss Group for Clinical Cancer Research, Bern, Switzerland; Bent Ejlertsen, Rigshospitalet, Copenhagen, Denmark; Marc Debled, Institut Bergoniié, Bordeaux, France; and Alan S. Coates, International Breast Cancer Study Group, Bern, Switzerland, and University of Sydney, Sydney, Australia.</nlm:aff>
</affiliation>
</author>
<author>
<name sortKey="Thurlimann, Beat" sort="Thurlimann, Beat" uniqKey="Thurlimann B" first="Beat" last="Thürlimann">Beat Thürlimann</name>
<affiliation>
<nlm:aff id="aff1">Otto Metzger Filho, Anita Giobbie-Hurder, and Eric P. Winer, Dana-Farber Cancer Institute; Richard D. Gelber and Meredith M. Regan, Harvard Medical School; Karen N. Price, Frontier Science and Technology Research, Boston, MA; Elizabeth Mallon, Southern General Hospital; Barry Gusterson, Institute of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom; Giuseppe Viale, European Institute of Oncology and University of Milan; Marco Colleoni and Aron Goldhirsch, European Institute of Oncology, Milan, Italy; Beat Thürlimann, Kantonsspital, St. Gallen, and Swiss Group for Clinical Cancer Research, Bern, Switzerland; Bent Ejlertsen, Rigshospitalet, Copenhagen, Denmark; Marc Debled, Institut Bergoniié, Bordeaux, France; and Alan S. Coates, International Breast Cancer Study Group, Bern, Switzerland, and University of Sydney, Sydney, Australia.</nlm:aff>
</affiliation>
</author>
<author>
<name sortKey="Gelber, Richard D" sort="Gelber, Richard D" uniqKey="Gelber R" first="Richard D." last="Gelber">Richard D. Gelber</name>
<affiliation>
<nlm:aff id="aff1">Otto Metzger Filho, Anita Giobbie-Hurder, and Eric P. Winer, Dana-Farber Cancer Institute; Richard D. Gelber and Meredith M. Regan, Harvard Medical School; Karen N. Price, Frontier Science and Technology Research, Boston, MA; Elizabeth Mallon, Southern General Hospital; Barry Gusterson, Institute of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom; Giuseppe Viale, European Institute of Oncology and University of Milan; Marco Colleoni and Aron Goldhirsch, European Institute of Oncology, Milan, Italy; Beat Thürlimann, Kantonsspital, St. Gallen, and Swiss Group for Clinical Cancer Research, Bern, Switzerland; Bent Ejlertsen, Rigshospitalet, Copenhagen, Denmark; Marc Debled, Institut Bergoniié, Bordeaux, France; and Alan S. Coates, International Breast Cancer Study Group, Bern, Switzerland, and University of Sydney, Sydney, Australia.</nlm:aff>
</affiliation>
</author>
<author>
<name sortKey="Colleoni, Marco" sort="Colleoni, Marco" uniqKey="Colleoni M" first="Marco" last="Colleoni">Marco Colleoni</name>
<affiliation>
<nlm:aff id="aff1">Otto Metzger Filho, Anita Giobbie-Hurder, and Eric P. Winer, Dana-Farber Cancer Institute; Richard D. Gelber and Meredith M. Regan, Harvard Medical School; Karen N. Price, Frontier Science and Technology Research, Boston, MA; Elizabeth Mallon, Southern General Hospital; Barry Gusterson, Institute of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom; Giuseppe Viale, European Institute of Oncology and University of Milan; Marco Colleoni and Aron Goldhirsch, European Institute of Oncology, Milan, Italy; Beat Thürlimann, Kantonsspital, St. Gallen, and Swiss Group for Clinical Cancer Research, Bern, Switzerland; Bent Ejlertsen, Rigshospitalet, Copenhagen, Denmark; Marc Debled, Institut Bergoniié, Bordeaux, France; and Alan S. Coates, International Breast Cancer Study Group, Bern, Switzerland, and University of Sydney, Sydney, Australia.</nlm:aff>
</affiliation>
</author>
<author>
<name sortKey="Ejlertsen, Bent" sort="Ejlertsen, Bent" uniqKey="Ejlertsen B" first="Bent" last="Ejlertsen">Bent Ejlertsen</name>
<affiliation>
<nlm:aff id="aff1">Otto Metzger Filho, Anita Giobbie-Hurder, and Eric P. Winer, Dana-Farber Cancer Institute; Richard D. Gelber and Meredith M. Regan, Harvard Medical School; Karen N. Price, Frontier Science and Technology Research, Boston, MA; Elizabeth Mallon, Southern General Hospital; Barry Gusterson, Institute of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom; Giuseppe Viale, European Institute of Oncology and University of Milan; Marco Colleoni and Aron Goldhirsch, European Institute of Oncology, Milan, Italy; Beat Thürlimann, Kantonsspital, St. Gallen, and Swiss Group for Clinical Cancer Research, Bern, Switzerland; Bent Ejlertsen, Rigshospitalet, Copenhagen, Denmark; Marc Debled, Institut Bergoniié, Bordeaux, France; and Alan S. Coates, International Breast Cancer Study Group, Bern, Switzerland, and University of Sydney, Sydney, Australia.</nlm:aff>
</affiliation>
</author>
<author>
<name sortKey="Debled, Marc" sort="Debled, Marc" uniqKey="Debled M" first="Marc" last="Debled">Marc Debled</name>
<affiliation>
<nlm:aff id="aff1">Otto Metzger Filho, Anita Giobbie-Hurder, and Eric P. Winer, Dana-Farber Cancer Institute; Richard D. Gelber and Meredith M. Regan, Harvard Medical School; Karen N. Price, Frontier Science and Technology Research, Boston, MA; Elizabeth Mallon, Southern General Hospital; Barry Gusterson, Institute of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom; Giuseppe Viale, European Institute of Oncology and University of Milan; Marco Colleoni and Aron Goldhirsch, European Institute of Oncology, Milan, Italy; Beat Thürlimann, Kantonsspital, St. Gallen, and Swiss Group for Clinical Cancer Research, Bern, Switzerland; Bent Ejlertsen, Rigshospitalet, Copenhagen, Denmark; Marc Debled, Institut Bergoniié, Bordeaux, France; and Alan S. Coates, International Breast Cancer Study Group, Bern, Switzerland, and University of Sydney, Sydney, Australia.</nlm:aff>
</affiliation>
</author>
<author>
<name sortKey="Price, Karen N" sort="Price, Karen N" uniqKey="Price K" first="Karen N." last="Price">Karen N. Price</name>
<affiliation>
<nlm:aff id="aff1">Otto Metzger Filho, Anita Giobbie-Hurder, and Eric P. Winer, Dana-Farber Cancer Institute; Richard D. Gelber and Meredith M. Regan, Harvard Medical School; Karen N. Price, Frontier Science and Technology Research, Boston, MA; Elizabeth Mallon, Southern General Hospital; Barry Gusterson, Institute of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom; Giuseppe Viale, European Institute of Oncology and University of Milan; Marco Colleoni and Aron Goldhirsch, European Institute of Oncology, Milan, Italy; Beat Thürlimann, Kantonsspital, St. Gallen, and Swiss Group for Clinical Cancer Research, Bern, Switzerland; Bent Ejlertsen, Rigshospitalet, Copenhagen, Denmark; Marc Debled, Institut Bergoniié, Bordeaux, France; and Alan S. Coates, International Breast Cancer Study Group, Bern, Switzerland, and University of Sydney, Sydney, Australia.</nlm:aff>
</affiliation>
</author>
<author>
<name sortKey="Regan, Meredith M" sort="Regan, Meredith M" uniqKey="Regan M" first="Meredith M." last="Regan">Meredith M. Regan</name>
<affiliation>
<nlm:aff id="aff1">Otto Metzger Filho, Anita Giobbie-Hurder, and Eric P. Winer, Dana-Farber Cancer Institute; Richard D. Gelber and Meredith M. Regan, Harvard Medical School; Karen N. Price, Frontier Science and Technology Research, Boston, MA; Elizabeth Mallon, Southern General Hospital; Barry Gusterson, Institute of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom; Giuseppe Viale, European Institute of Oncology and University of Milan; Marco Colleoni and Aron Goldhirsch, European Institute of Oncology, Milan, Italy; Beat Thürlimann, Kantonsspital, St. Gallen, and Swiss Group for Clinical Cancer Research, Bern, Switzerland; Bent Ejlertsen, Rigshospitalet, Copenhagen, Denmark; Marc Debled, Institut Bergoniié, Bordeaux, France; and Alan S. Coates, International Breast Cancer Study Group, Bern, Switzerland, and University of Sydney, Sydney, Australia.</nlm:aff>
</affiliation>
</author>
<author>
<name sortKey="Coates, Alan S" sort="Coates, Alan S" uniqKey="Coates A" first="Alan S." last="Coates">Alan S. Coates</name>
<affiliation>
<nlm:aff id="aff1">Otto Metzger Filho, Anita Giobbie-Hurder, and Eric P. Winer, Dana-Farber Cancer Institute; Richard D. Gelber and Meredith M. Regan, Harvard Medical School; Karen N. Price, Frontier Science and Technology Research, Boston, MA; Elizabeth Mallon, Southern General Hospital; Barry Gusterson, Institute of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom; Giuseppe Viale, European Institute of Oncology and University of Milan; Marco Colleoni and Aron Goldhirsch, European Institute of Oncology, Milan, Italy; Beat Thürlimann, Kantonsspital, St. Gallen, and Swiss Group for Clinical Cancer Research, Bern, Switzerland; Bent Ejlertsen, Rigshospitalet, Copenhagen, Denmark; Marc Debled, Institut Bergoniié, Bordeaux, France; and Alan S. Coates, International Breast Cancer Study Group, Bern, Switzerland, and University of Sydney, Sydney, Australia.</nlm:aff>
</affiliation>
</author>
<author>
<name sortKey="Goldhirsch, Aron" sort="Goldhirsch, Aron" uniqKey="Goldhirsch A" first="Aron" last="Goldhirsch">Aron Goldhirsch</name>
<affiliation>
<nlm:aff id="aff1">Otto Metzger Filho, Anita Giobbie-Hurder, and Eric P. Winer, Dana-Farber Cancer Institute; Richard D. Gelber and Meredith M. Regan, Harvard Medical School; Karen N. Price, Frontier Science and Technology Research, Boston, MA; Elizabeth Mallon, Southern General Hospital; Barry Gusterson, Institute of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom; Giuseppe Viale, European Institute of Oncology and University of Milan; Marco Colleoni and Aron Goldhirsch, European Institute of Oncology, Milan, Italy; Beat Thürlimann, Kantonsspital, St. Gallen, and Swiss Group for Clinical Cancer Research, Bern, Switzerland; Bent Ejlertsen, Rigshospitalet, Copenhagen, Denmark; Marc Debled, Institut Bergoniié, Bordeaux, France; and Alan S. Coates, International Breast Cancer Study Group, Bern, Switzerland, and University of Sydney, Sydney, Australia.</nlm:aff>
</affiliation>
</author>
</analytic>
<series>
<title level="j">Journal of Clinical Oncology</title>
<idno type="ISSN">0732-183X</idno>
<idno type="eISSN">1527-7755</idno>
<imprint>
<date when="2015">2015</date>
</imprint>
</series>
</biblStruct>
</sourceDesc>
</fileDesc>
<profileDesc>
<textClass></textClass>
</profileDesc>
</teiHeader>
<front>
<div type="abstract" xml:lang="en">
<sec>
<title>Purpose</title>
<p>To evaluate the relative effectiveness of letrozole compared with tamoxifen for patients with invasive ductal or lobular carcinoma.</p>
</sec>
<sec>
<title>Patients and Methods</title>
<p>Patients diagnosed with early-stage invasive ductal carcinoma (IDC) or classic invasive lobular carcinoma (ILC) who were randomly assigned onto the Breast International Group (BIG) 1-98 trial and who had centrally reviewed pathology data were included (N = 2,923). HER2-negative IDC and ILC were additionally classified as hormone receptor–positive with high (luminal B [LB] –like) or low (luminal A [LA] –like) proliferative activity by Ki-67 labeling index. Survival analyses were performed with weighted Cox models that used inverse probability of censoring weighted modeling.</p>
</sec>
<sec>
<title>Results</title>
<p>The median follow-up time was 8.1 years. In multivariable models for disease-free survival (DFS), significant interactions between treatment and histology (ILC or IDC;
<italic>P</italic>
= .006) and treatment and subgroup (LB like or LA like;
<italic>P</italic>
= .01) were observed. In the ILC subset, there was a 66% reduction in the hazard of a DFS event with letrozole for LB (hazard ratio [HR], 0.34; 95% CI, 0.21 to 0.55) and a 50% reduction for LA subtypes (HR, 0.50; 95% CI, 0.32 to 0.78). In the IDC subset, there was a significant 35% reduction in the hazard of a DFS event with letrozole for the LB subtype (HR, 0.65; 95% CI, 0.53 to 0.79), but no difference between treatments was noted for IDC and the LA subtype (HR, 0.95; 95% CI, 0.76 to 1.20).</p>
</sec>
<sec>
<title>Conclusion</title>
<p>The magnitude of benefit of adjuvant letrozole is greater for patients diagnosed with lobular carcinoma versus ductal carcinoma.</p>
</sec>
</div>
</front>
</TEI>
<pmc article-type="research-article">
<pmc-comment>The publisher of this article does not allow downloading of the full text in XML form.</pmc-comment>
<front>
<journal-meta>
<journal-id journal-id-type="nlm-ta">J Clin Oncol</journal-id>
<journal-id journal-id-type="iso-abbrev">J. Clin. Oncol</journal-id>
<journal-id journal-id-type="hwp">jco</journal-id>
<journal-id journal-id-type="pmc">jco</journal-id>
<journal-id journal-id-type="publisher-id">JCO</journal-id>
<journal-title-group>
<journal-title>Journal of Clinical Oncology</journal-title>
</journal-title-group>
<issn pub-type="ppub">0732-183X</issn>
<issn pub-type="epub">1527-7755</issn>
<publisher>
<publisher-name>American Society of Clinical Oncology</publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id pub-id-type="pmid">26215945</article-id>
<article-id pub-id-type="pmc">4550691</article-id>
<article-id pub-id-type="publisher-id">08133</article-id>
<article-id pub-id-type="doi">10.1200/JCO.2015.60.8133</article-id>
<article-categories>
<subj-group subj-group-type="hwp-journal-coll">
<subject>Bc7</subject>
</subj-group>
<subj-group subj-group-type="heading">
<subject>ORIGINAL REPORTS</subject>
<subj-group>
<subject>Breast Cancer</subject>
</subj-group>
</subj-group>
</article-categories>
<title-group>
<article-title>Relative Effectiveness of Letrozole Compared With Tamoxifen for Patients With Lobular Carcinoma in the BIG 1-98 Trial</article-title>
<alt-title alt-title-type="short">Effectiveness of Endocrine Therapies for Invasive Lobular Carcinoma</alt-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname>Metzger Filho</surname>
<given-names>Otto</given-names>
</name>
<xref ref-type="aff" rid="aff1"></xref>
<xref ref-type="corresp" rid="cor1"></xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Giobbie-Hurder</surname>
<given-names>Anita</given-names>
</name>
<xref ref-type="aff" rid="aff1"></xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Mallon</surname>
<given-names>Elizabeth</given-names>
</name>
<xref ref-type="aff" rid="aff1"></xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Gusterson</surname>
<given-names>Barry</given-names>
</name>
<xref ref-type="aff" rid="aff1"></xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Viale</surname>
<given-names>Giuseppe</given-names>
</name>
<xref ref-type="aff" rid="aff1"></xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Winer</surname>
<given-names>Eric P.</given-names>
</name>
<xref ref-type="aff" rid="aff1"></xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Thürlimann</surname>
<given-names>Beat</given-names>
</name>
<xref ref-type="aff" rid="aff1"></xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Gelber</surname>
<given-names>Richard D.</given-names>
</name>
<xref ref-type="aff" rid="aff1"></xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Colleoni</surname>
<given-names>Marco</given-names>
</name>
<xref ref-type="aff" rid="aff1"></xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Ejlertsen</surname>
<given-names>Bent</given-names>
</name>
<xref ref-type="aff" rid="aff1"></xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Debled</surname>
<given-names>Marc</given-names>
</name>
<xref ref-type="aff" rid="aff1"></xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Price</surname>
<given-names>Karen N.</given-names>
</name>
<xref ref-type="aff" rid="aff1"></xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Regan</surname>
<given-names>Meredith M.</given-names>
</name>
<xref ref-type="aff" rid="aff1"></xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Coates</surname>
<given-names>Alan S.</given-names>
</name>
<xref ref-type="aff" rid="aff1"></xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Goldhirsch</surname>
<given-names>Aron</given-names>
</name>
<xref ref-type="aff" rid="aff1"></xref>
</contrib>
<aff id="aff1">Otto Metzger Filho, Anita Giobbie-Hurder, and Eric P. Winer, Dana-Farber Cancer Institute; Richard D. Gelber and Meredith M. Regan, Harvard Medical School; Karen N. Price, Frontier Science and Technology Research, Boston, MA; Elizabeth Mallon, Southern General Hospital; Barry Gusterson, Institute of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom; Giuseppe Viale, European Institute of Oncology and University of Milan; Marco Colleoni and Aron Goldhirsch, European Institute of Oncology, Milan, Italy; Beat Thürlimann, Kantonsspital, St. Gallen, and Swiss Group for Clinical Cancer Research, Bern, Switzerland; Bent Ejlertsen, Rigshospitalet, Copenhagen, Denmark; Marc Debled, Institut Bergoniié, Bordeaux, France; and Alan S. Coates, International Breast Cancer Study Group, Bern, Switzerland, and University of Sydney, Sydney, Australia.</aff>
</contrib-group>
<author-notes>
<fn fn-type="equal">
<p>Both O.M.F. and A.G.-H. contributed equally to this work.</p>
</fn>
<corresp id="cor1">Corresponding author: Otto Metzger Filho, MD, 450 Brookline Ave, Yawkey 1238, Boston, MA 02215; e-mail:
<email>otto_metzger@dfci.harvard.edu</email>
.</corresp>
</author-notes>
<pub-date pub-type="ppub">
<day>1</day>
<month>9</month>
<year>2015</year>
</pub-date>
<pub-date pub-type="epub">
<day>27</day>
<month>7</month>
<year>2015</year>
</pub-date>
<pub-date pub-type="pmc-release">
<day>1</day>
<month>9</month>
<year>2016</year>
</pub-date>
<pmc-comment> PMC Release delay is 12 months and 0 days and was based on the . </pmc-comment>
<volume>33</volume>
<issue>25</issue>
<fpage>2772</fpage>
<lpage>2779</lpage>
<permissions>
<copyright-statement>© 2015 by American Society of Clinical Oncology</copyright-statement>
<copyright-year>2015</copyright-year>
<copyright-holder>American Society of Clinical Oncology</copyright-holder>
</permissions>
<self-uri xlink:title="pdf" xlink:type="simple" xlink:href="zlj02515002772.pdf"></self-uri>
<abstract>
<sec>
<title>Purpose</title>
<p>To evaluate the relative effectiveness of letrozole compared with tamoxifen for patients with invasive ductal or lobular carcinoma.</p>
</sec>
<sec>
<title>Patients and Methods</title>
<p>Patients diagnosed with early-stage invasive ductal carcinoma (IDC) or classic invasive lobular carcinoma (ILC) who were randomly assigned onto the Breast International Group (BIG) 1-98 trial and who had centrally reviewed pathology data were included (N = 2,923). HER2-negative IDC and ILC were additionally classified as hormone receptor–positive with high (luminal B [LB] –like) or low (luminal A [LA] –like) proliferative activity by Ki-67 labeling index. Survival analyses were performed with weighted Cox models that used inverse probability of censoring weighted modeling.</p>
</sec>
<sec>
<title>Results</title>
<p>The median follow-up time was 8.1 years. In multivariable models for disease-free survival (DFS), significant interactions between treatment and histology (ILC or IDC;
<italic>P</italic>
= .006) and treatment and subgroup (LB like or LA like;
<italic>P</italic>
= .01) were observed. In the ILC subset, there was a 66% reduction in the hazard of a DFS event with letrozole for LB (hazard ratio [HR], 0.34; 95% CI, 0.21 to 0.55) and a 50% reduction for LA subtypes (HR, 0.50; 95% CI, 0.32 to 0.78). In the IDC subset, there was a significant 35% reduction in the hazard of a DFS event with letrozole for the LB subtype (HR, 0.65; 95% CI, 0.53 to 0.79), but no difference between treatments was noted for IDC and the LA subtype (HR, 0.95; 95% CI, 0.76 to 1.20).</p>
</sec>
<sec>
<title>Conclusion</title>
<p>The magnitude of benefit of adjuvant letrozole is greater for patients diagnosed with lobular carcinoma versus ductal carcinoma.</p>
</sec>
</abstract>
</article-meta>
</front>
</pmc>
</record>

Pour manipuler ce document sous Unix (Dilib)

EXPLOR_STEP=$WICRI_ROOT/Wicri/Asie/explor/AustralieFrV1/Data/Pmc/Corpus
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 000461 | SxmlIndent | more

Ou

HfdSelect -h $EXPLOR_AREA/Data/Pmc/Corpus/biblio.hfd -nk 000461 | SxmlIndent | more

Pour mettre un lien sur cette page dans le réseau Wicri

{{Explor lien
   |wiki=    Wicri/Asie
   |area=    AustralieFrV1
   |flux=    Pmc
   |étape=   Corpus
   |type=    RBID
   |clé=     PMC:4550691
   |texte=   Relative Effectiveness of Letrozole Compared With Tamoxifen for Patients With Lobular Carcinoma in the BIG 1-98 Trial
}}

Pour générer des pages wiki

HfdIndexSelect -h $EXPLOR_AREA/Data/Pmc/Corpus/RBID.i   -Sk "pubmed:26215945" \
       | HfdSelect -Kh $EXPLOR_AREA/Data/Pmc/Corpus/biblio.hfd   \
       | NlmPubMed2Wicri -a AustralieFrV1 

Wicri

This area was generated with Dilib version V0.6.33.
Data generation: Tue Dec 5 10:43:12 2017. Site generation: Tue Mar 5 14:07:20 2024