Abstract
Background
This subgroup analysis of a prospective phase II trial aimed to identify valuable and accessible prognostic factors for overall survival (OS) and progression-free survival (PFS) of patients with locally advanced cervical cancer (LACC).
Methods
Patients with FIGO II to IVA cervical cancer were assessed in this study. All patients underwent concurrent chemoradiotherapy (CCRT) followed by brachytherapy. Tumor parameters based on MRI scans before and during CCRT were evaluated for Overall survival (OS) and Progression-free survival (PFS).
Results
A total of 86 patients were included in this analysis with a median follow-up period of 31.7 months. Three-year OS and PFS rates for all patients were 87.1% and 76.5%, respectively. Univariate Cox regression analysis showed that restaging tumor size (rTS) over 2.55 cm (p < 0.001), initial tumor volume (iTV) over 55.99 cc (p < 0.001), downstaging (p = 0.042), and restaging tumor volume (rTV) over 6.25 cc (p = 0.006) were significantly associated with OS. rTS (p < 0.001), iTV (p < 0.001), downstaging (p = 0.027), and rTV (p < 0.001) were identified as significant prognostic factors for PFS. In the stepwise multivariable analysis, only rTS > 2.55 cm showed statistically significant with OS (HR: 5.47, 95% CI 1.80–9.58, p = 0.035) and PFS (HR: 3.83, 95% CI 1.50–11.45; p = 0.025).
Conclusions
Initial tumor size and restaging tumor volume that are easily accessible during radiotherapy provide valuable prognostic information for cervical cancer. MRI-based measurable volumetric scoring system can be readily applied in real-world practice of cervical cancer.
Clinical trial information: This study is a subgroup analysis of prospective trial registered at ClinicalTrials.gov Identifier: NCT02993653.
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Abbreviations
- FIGO:
-
International Federation Gynecology Obstetrics
- iTS:
-
Initial tumor size before therapy
- rTS:
-
Restaging tumor size at early MRI during concurrent chemoradiation
- TSRR:
-
Tumor size reduction rate
- iTV:
-
Initial tumor volume before therapy
- rTV:
-
Restaging tumor volume
- TVRR:
-
Tumor volume reduction rate
- iSCC:
-
Initial squamous cell cancer antigen level
- rSCC:
-
Restaging squamous cell cancer antigen level
- SCCRR:
-
Squamous cell cancer reduction rate
- OS:
-
Overall survival
- PFS:
-
Progression-free survival
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Statistical analyses performed in this article were advised by Catholic Medical Center Clinical Research Coordinating Center.
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Kang, H.B., Kim, S.H., Lee, J.H. et al. MRI-based volumetric tumor parameters before and during chemoradiation predict tumor recurrence and patient survival in locally advanced cervical cancer: a subgroup analysis of a phase II prospective trial. Int J Clin Oncol 29, 620–628 (2024). https://doi.org/10.1007/s10147-024-02490-7
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DOI: https://doi.org/10.1007/s10147-024-02490-7