Back to Search
Start Over
Risk Factors for Local Failure Following Chemoradiation and Magnetic Resonance Image-Guided Brachytherapy in Locally Advanced Cervical Cancer: Results From the EMBRACE-I Study.
- Source :
-
Journal of clinical oncology : official journal of the American Society of Clinical Oncology [J Clin Oncol] 2023 Apr 01; Vol. 41 (10), pp. 1933-1942. Date of Electronic Publication: 2023 Jan 04. - Publication Year :
- 2023
-
Abstract
- Purpose: To report clinical and treatment characteristics, remission and failure patterns, and risk factors for local failure (LF) from the EMBRACE-I study.<br />Materials and Methods: EMBRACE-I was a prospective, observational, multicenter cohort study on magnetic resonance imaging-based image-guided adaptive brachytherapy (MR-IGABT) in locally advanced cervical cancer. Treatment consisted of external beam radiotherapy, concurrent chemotherapy, and MR-IGABT. LF was defined as progressive or recurrent disease in the cervix, uterus, parametria, pelvic wall, or vagina. Competing risk analysis was used to estimate local tumor control (LC) and Cox proportional regression models for multivariable analysis and dose-response analysis.<br />Results: One thousand three hundred eighteen patients with a median follow-up of 52 months were available for this analysis. Eighty-one patients had persistent disease 3 months after end of treatment. Of those, 60 patients achieved LC at 6-9 months without further treatment, whereas 21 patients had progressive disease. In addition, 77 patients developed a local recurrence after complete remission comprising a total number of 98 LFs. LFs were located inside the MR-IGABT target volumes in 90% of patients with LF. In multivariable analysis, histology, minimal dose to 90% of high-risk clinical target volume (CTV <subscript>HR</subscript> ), maximum tumor dimension, CTV <subscript>HR</subscript> > 45 cm <superscript>3</superscript> , overall treatment time, tumor necrosis on magnetic resonance imaging at diagnosis, uterine corpus infiltration at diagnosis and at MR-IGABT, and mesorectal infiltration at MR-IGABT had significant impact on LF. Dose-response analysis showed that a minimal dose to 90% of 85 Gy to the CTV <subscript>HR</subscript> led to 95% (95% CI, 94 to 97) LC 3 years postintervention for squamous cell in comparison to 86% (95% CI, 81 to 90) for adeno/adenosquamous carcinoma histology.<br />Conclusion: The present study demonstrates the safety and validity of the GYN GEC-ESTRO/ICRU-89 target concept and provides large-scale evidence for dose prescription and new risk factors for LF in MR-IGABT in locally advanced cervical cancer.<br />Competing Interests: Maximilian P. SchmidHonoraria: ElektaResearch Funding: Elekta (Inst), Varian Medical Systems (Inst)Patents, Royalties, Other Intellectual Property: Patent: US20170120072 Umesh MahantshettyConsulting or Advisory Role: AstraZenecaResearch Funding: Varian Medical Systems (Inst) Kari TanderupResearch Funding: Varian Medical Systems (Inst), Elekta (Inst) Peter HoskinResearch Funding: Varian Medical Systems (Inst), Astellas Pharma (Inst), Bayer (Inst), Roche (Inst), Pfizer (Inst), Elekta (Inst), Bristol Meyers (Inst) Bradley R. PietersConsulting or Advisory Role: BD Bard (Inst)Research Funding: ElektaTravel, Accommodations, Expenses: BD BardOther Relationship: Elekta (Inst) Remi NoutConsulting or Advisory Role: Merck KGaA (Inst)Research Funding: Varian Medical Systems (Inst), Elekta (Inst), Accuray (Inst) Nicole NesvacilHonoraria: ElektaConsulting or Advisory Role: ElektaTravel, Accommodations, Expenses: Elekta Richard PötterResearch Funding: Elekta (Inst), Varian Medical Systems (Inst) Christian KirisitsHonoraria: ElektaResearch Funding: Elekta (Inst), Varian Medical (Inst)Patents, Royalties, Other Intellectual Property: Patent WO2015181632A1 on Methods and Systems for Brachytherapy Planning Based on Imaging DataNo other potential conflicts of interest were reported.
- Subjects :
- Female
Humans
Prospective Studies
Cohort Studies
Neoplasm Staging
Magnetic Resonance Imaging
Radiotherapy Dosage
Risk Factors
Uterine Cervical Neoplasms diagnostic imaging
Uterine Cervical Neoplasms drug therapy
Uterine Cervical Neoplasms radiotherapy
Brachytherapy adverse effects
Brachytherapy methods
Radiotherapy, Image-Guided adverse effects
Subjects
Details
- Language :
- English
- ISSN :
- 1527-7755
- Volume :
- 41
- Issue :
- 10
- Database :
- MEDLINE
- Journal :
- Journal of clinical oncology : official journal of the American Society of Clinical Oncology
- Publication Type :
- Academic Journal
- Accession number :
- 36599120
- Full Text :
- https://doi.org/10.1200/JCO.22.01096