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LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00004713naa a2200673 4500
001oai:gup.ub.gu.se/306495
003SwePub
008240528s2021 | |||||||||||000 ||eng|
024a https://gup.ub.gu.se/publication/3064952 URI
024a https://doi.org/10.1016/j.annonc.2021.07.0172 DOI
040 a (SwePub)gu
041 a eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
100a Jerusalem, G4 aut
2451 0a Continuous versus intermittent extended adjuvant letrozole for breast cancer: Final results of randomized phase 3 SOLE (Study of Letrozole Extension) and SOLE Estrogen Substudy.
264 1b Elsevier BV,c 2021
520 a Late recurrences in postmenopausal women with hormone receptor-positive breast cancers remain an important challenge. Avoidance or delayed development of resistance represents the main objective in extended endocrine therapy. In animal models, resistance was reversed with restoration of circulating estrogen level during interruption of letrozole treatment. This phase 3 randomized, open-label Study of Letrozole Extension (SOLE) studied the effect of extended intermittent letrozole treatment in comparison with continuous letrozole. In parallel, the SOLE estrogen sub-study (SOLE-EST) analyzed the level of estrogen during the interruption of treatment.SOLE enrolled 4884 postmenopausal women with hormone receptor-positive, lymph node-positive, operable breast cancer between December 2007 and October 2012 and among them, 104 patients were enrolled in SOLE-EST. They must have undergone local treatment and have completed 4-6 years of adjuvant endocrine therapy. Patients were randomized between continuous letrozole (2.5 mg/day orally for 5 years) and intermittent letrozole treatment (2.5 mg/day during 9 months followed by a 3-month interruption in years 1-4 and then 2.5 mg/day during all year 5).Intention-to-treat population included 4851 women in SOLE (n=2425 in intermittent and n=2426 in continuous letrozole groups) and 103 women in SOLE-EST (n=78 in intermittent and n=25 in continuous letrozole groups). After a median follow-up of 84 months, 7-year disease-free survival was 81.4% in intermittent group and 81.5% in continuous group (hazard ratio: 1.03, 95%CI: 0.91-1.17). Reported adverse events were similar in both groups. Circulating estrogen recovery was demonstrated within 6 weeks after the stop of letrozole treatment.Extended adjuvant endocrine therapy by intermittent administration of letrozole did not improve disease-free survival compared to continuous use despite the recovery of circulating estrogen level. The similar disease-free survival coupled with previously reported quality-of-life advantages suggest intermittent extended treatment is a valid option for patients who require or prefer a treatment interruption.
650 7a MEDICIN OCH HÄLSOVETENSKAPx Klinisk medicinx Cancer och onkologi0 (SwePub)302032 hsv//swe
650 7a MEDICAL AND HEALTH SCIENCESx Clinical Medicinex Cancer and Oncology0 (SwePub)302032 hsv//eng
653 a breast cancer
653 a endocrine treatment
700a Farah, S4 aut
700a Courtois, A4 aut
700a Chirgwin, J4 aut
700a Aebi, S4 aut
700a Karlsson, Per,d 1963u Gothenburg University,Göteborgs universitet,Institutionen för kliniska vetenskaper, Avdelningen för onkologi,Institute of Clinical Sciences, Department of Oncology4 aut0 (Swepub:gu)xkperd
700a Neven, P4 aut
700a Hitre, E4 aut
700a Graas, M P4 aut
700a Simoncini, E4 aut
700a Abdi, E4 aut
700a Kamby, C4 aut
700a Thompson, A4 aut
700a Loibl, S4 aut
700a Gavilá, J4 aut
700a Kuroi, K4 aut
700a Marth, C4 aut
700a Müller, B4 aut
700a O'Reilly, S4 aut
700a Gombos, A4 aut
700a Ruhstaller, T4 aut
700a Burstein, H J4 aut
700a Rabaglio, M4 aut
700a Ruepp, B4 aut
700a Ribi, K4 aut
700a Viale, G4 aut
700a Gelber, R D4 aut
700a Coates, A S4 aut
700a Loi, S4 aut
700a Goldhirsch, A4 aut
700a Regan, M M4 aut
700a Colleoni, M4 aut
710a Göteborgs universitetb Institutionen för kliniska vetenskaper, Avdelningen för onkologi4 org
773t Annals of Oncologyd : Elsevier BVg 32:10, s. 1256-1266q 32:10<1256-1266x 0923-7534
856u http://www.annalsofoncology.org/article/S0923753421024923/pdf
8564 8u https://gup.ub.gu.se/publication/306495
8564 8u https://doi.org/10.1016/j.annonc.2021.07.017

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