Alexandra H Latham1, Ling Chen1, June Y Hou2, Ana I Tergas3, Fady Khoury-Collado2, Caryn M St Clair2, Cande V Ananth4, Alfred I Neugut3, Dawn L Hershman3, Jason D Wright5. 1. Columbia University College of Physicians and Surgeons, United States of America. 2. Columbia University College of Physicians and Surgeons, United States of America; Herbert Irving Comprehensive Cancer Center, United States of America; New York Presbyterian Hospital, United States of America. 3. Columbia University College of Physicians and Surgeons, United States of America; Joseph L. Mailman School of Public Health, Columbia University, United States of America; Herbert Irving Comprehensive Cancer Center, United States of America; New York Presbyterian Hospital, United States of America. 4. Joseph L. Mailman School of Public Health, Columbia University, United States of America; Rutgers Robert Wood Johnson Medical School, United States of America; Department of Biostatistics and Epidemiology, Rutgers School of Public Health, NJ, United States of America; Environmental and Occupational Health Sciences Institute (EOHSI), United States of America. 5. Columbia University College of Physicians and Surgeons, United States of America; Herbert Irving Comprehensive Cancer Center, United States of America; New York Presbyterian Hospital, United States of America. Electronic address: jw2459@columbia.edu.
Abstract
OBJECTIVE: While women with stage III endometrial cancer are often treated with chemotherapy and external beam radiation, the optimal sequence of these modalities is unknown. We examined the association between the sequence of chemotherapy (CT) and external beam radiation therapy (RT) on survival for women with stage IIIC endometrial carcinoma. METHODS: The National Cancer Database was used to identify women with stage IIIC endometrial carcinoma treated with adjuvant CT and RT from 2004 to 2015. Patients were stratified based on the sequence of therapy: RT before CT, CT before RT, or concurrent therapy. The association between treatment sequence and mortality was examined through a weighted propensity score analysis. RESULTS: A total of 6981 patients were identified, including 5116 (73.3%) who received CT before RT, 696 (10.0%) who received RT before CT, and 1169 (16.7%) who received concurrent therapy. The use of CT-RT increased from 39.9% in 2004 to 75.5% in 2015, while use of RT-CT decreased from 34.0% to 4.4% and concurrent therapy decreased from 26.1% to 20.2% over the same period (P < 0.001). Compared to CT-RT, there was no difference in risk of mortality with RT before CT (HR = 1.01; 95% CI, 0.86-1.19) while concurrent therapy was associated with a 47% increased risk of mortality (HR = 1.47; 95% CI, 1.31-1.66). In a sensitivity analysis combining the groups that received RT first (RT before CT or concurrent RT-CT), mortality was 25% higher (HR = 1.25; 95% CI, 1.13-1.39) compared to a strategy of CT followed by RT. CONCLUSION: Among women with stage IIIC endometrial carcinoma treated with combination chemotherapy and external beam radiation, a strategy employing chemotherapy first is associated with improved survival compared to concurrent therapy.
OBJECTIVE: While women with stage III endometrial cancer are often treated with chemotherapy and external beam radiation, the optimal sequence of these modalities is unknown. We examined the association between the sequence of chemotherapy (CT) and external beam radiation therapy (RT) on survival for women with stage IIIC endometrial carcinoma. METHODS: The National Cancer Database was used to identify women with stage IIIC endometrial carcinoma treated with adjuvant CT and RT from 2004 to 2015. Patients were stratified based on the sequence of therapy: RT before CT, CT before RT, or concurrent therapy. The association between treatment sequence and mortality was examined through a weighted propensity score analysis. RESULTS: A total of 6981 patients were identified, including 5116 (73.3%) who received CT before RT, 696 (10.0%) who received RT before CT, and 1169 (16.7%) who received concurrent therapy. The use of CT-RT increased from 39.9% in 2004 to 75.5% in 2015, while use of RT-CT decreased from 34.0% to 4.4% and concurrent therapy decreased from 26.1% to 20.2% over the same period (P < 0.001). Compared to CT-RT, there was no difference in risk of mortality with RT before CT (HR = 1.01; 95% CI, 0.86-1.19) while concurrent therapy was associated with a 47% increased risk of mortality (HR = 1.47; 95% CI, 1.31-1.66). In a sensitivity analysis combining the groups that received RT first (RT before CT or concurrent RT-CT), mortality was 25% higher (HR = 1.25; 95% CI, 1.13-1.39) compared to a strategy of CT followed by RT. CONCLUSION: Among women with stage IIIC endometrial carcinoma treated with combination chemotherapy and external beam radiation, a strategy employing chemotherapy first is associated with improved survival compared to concurrent therapy.
Authors: Giorgio Bogani; Isabelle Ray-Coquard; Nicole Concin; Natalie Y L Ngoi; Philippe Morice; Takayuki Enomoto; Kazuhiro Takehara; Hannelore Denys; Remi A Nout; Domenica Lorusso; Michelle M Vaughan; Marta Bini; Masashi Takano; Diane Provencher; Alice Indini; Satoru Sagae; Pauline Wimberger; Robert Póka; Yakir Segev; Se Ik Kim; Francisco J Candido Dos Reis; Salvatore Lopez; Andrea Mariani; Mario M Leitao; Francesco Raspagliesi; Pieluigi Benedetti Panici; Violante Di Donato; Ludovico Muzii; Nicoletta Colombo; Giovanni Scambia; Sandro Pignata; Bradley J Monk Journal: Gynecol Oncol Date: 2021-04-30 Impact factor: 5.304