Faculty Collaboration Database

NRG Oncology/RTOG 0921: A phase 2 study of postoperative intensity-modulated radiotherapy with concurrent cisplatin and bevacizumab followed by carboplatin and paclitaxel for patients with endometrial cancer. Cancer 2015 Jul 01;121(13):2156-63

Date

04/08/2015

Pubmed ID

25847373

Pubmed Central ID

PMC4685031

DOI

10.1002/cncr.29337

Scopus ID

2-s2.0-84931573058 (requires institutional sign-in at Scopus site)   46 Citations

Abstract

BACKGROUND: The current study was conducted to assess acute and late adverse events (AEs), overall survival (OS), pelvic failure, regional failure, distant failure, and disease-free survival in a prospective phase 2 clinical trial of bevacizumab and pelvic intensity-modulated radiotherapy (IMRT) with chemotherapy in patients with high-risk endometrial cancer.

METHODS: Patients underwent a hysterectomy and lymph node removal, and had ≥1 of the following high-risk factors: grade 3 carcinoma with >50% myometrial invasion, grade 2 or 3 disease with any cervical stromal invasion, or known extrauterine extension confined to the pelvis. Treatment included pelvic IMRT and concurrent cisplatin on days 1 and 29 of radiation and bevacizumab (at a dose of 5 mg/kg on days 1, 15, and 29 of radiation) followed by adjuvant carboplatin and paclitaxel for 4 cycles. The primary endpoint was grade ≥3 AEs occurring within the first 90 days (toxicity was graded according to the National Cancer Institute Common Terminology Criteria for Adverse Events [version 4.0]).

RESULTS: A total of 34 patients were accrued from November 2009 through December 2011, 30 of whom were eligible and received study treatment. Seven of 30 patients (23.3%; 1-sided 95% confidence interval, 10.6%-36.0%) developed grade ≥3 treatment-related nonhematologic toxicities within 90 days; an additional 6 patients experienced grade ≥3 toxicities between 90 and 365 days after treatment. The 2-year OS rate was 96.7% and the disease-free survival rate was 79.1%. No patient developed a within-field pelvic failure and no patients with International Federation of Gynecology and Obstetrics stage I to IIIA disease developed disease recurrence after a median follow-up of 26 months.

CONCLUSIONS: Postoperative bevacizumab added to chemotherapy and pelvic IMRT appears to be well tolerated and results in high OS rates at 2 years for patients with high-risk endometrial carcinoma.

Author List

Viswanathan AN, Moughan J, Miller BE, Xiao Y, Jhingran A, Portelance L, Bosch WR, Matulonis UA, Horowitz NS, Mannel RS, Souhami L, Erickson BA, Winter KA, Small W Jr, Gaffney DK

Author

Beth A. Erickson MD Professor in the Radiation Oncology department at Medical College of Wisconsin

MESH terms used to index this publication - Major topics in bold

Adult
Aged
Aged, 80 and over
Antineoplastic Combined Chemotherapy Protocols
Bevacizumab
Chemoradiotherapy, Adjuvant
Cisplatin
Disease-Free Survival
Endometrial Neoplasms
Female
Humans
Hysterectomy
Lymph Node Excision
Middle Aged
Paclitaxel
Postoperative Period
Radiotherapy, Intensity-Modulated