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Δευτέρα 21 Ιανουαρίου 2019

Association of chemotherapy and radiotherapy sequence with overall survival in locoregionally advanced endometrial cancer.

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Association of chemotherapy and radiotherapy sequence with overall survival in locoregionally advanced endometrial cancer.

Gynecol Oncol. 2019 Jan 16;:

Authors: Goodman CR, Hatoum S, Seagle BL, Donnelly ED, Barber EL, Shahabi S, Matei DE, Strauss JB

Abstract
OBJECTIVE: The optimal adjuvant management of women with FIGO Stage III-IVA endometrial cancer (EC) is unclear. While recent prospective data suggest that treatment with pelvic radiotherapy (RT) prior to chemotherapy (CT) is not associated with a survival benefit compared to CT alone, no prospective randomized trial has included a treatment arm in which CT is given before RT.
METHODS: An observational cohort study was performed on women with FIGO Stage III-IVA Type 1 (grade 1-2, endometrioid) EC who underwent hysterectomy and received multi-agent CT and/or RT from 2004 to 2014 at Commission on Cancer-accredited hospitals. Multivariable parametric accelerated failure time models were performed to estimate the association of sequence of adjuvant CT and RT with overall survival (OS) using propensity score-adjusted matched cohorts.
RESULTS: Of 5795 women identified, 1260 (21.7%) received RT only, 2465 (42.5%) received CT only, 593 (9.7%) received RT before CT, and 1506 (26.0%) received RT after CT. Women who received RT after CT experienced significantly longer 5-year OS than women who received RT before CT (5-year OS: 80.1% vs 73.3%; time-ratio (TR) = 1.37, 95% CI = 1.18-1.58, P < 0.001), CT only (68.9%; TR = 1.33, 95% CI = 1.19-1.48, P < 0.001), or RT only (64.5%, TR = 1.50, 95% CI = 1.32-1.70, P < 0.001).
CONCLUSIONS: For women with advanced EC, treatment with multi-agent CT followed by RT is associated with longer OS compared with treatment with RT followed by CT or either treatment alone. These hypothesis-generating data support inclusion in future prospective trials of regimens in which multi-agent CT starts prior to RT.

PMID: 30660345 [PubMed - as supplied by publisher]



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