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A systematic review of stage IVA cervical cancer treatment: Challenges in the management of an understudied group
Kyra S Hunsberger1, Sierra Treiman2, Bradley J Monk3
1The University of Arizona, College of Medicine - Phoenix, Phoenix, Arizona.
Gynecologic Oncology
|May 17, 2024
Summary
Stage IVA cervical cancer patients have poor outcomes and are underrepresented in clinical trials. Current evidence on treatments like chemotherapy and immunotherapy offers mixed results, highlighting the need for more research.
Area of Science:
- Oncology
- Gynecologic Oncology
- Clinical Trials
Background:
- Stage IVA cervical cancer represents a small fraction of trial participants but experiences disproportionately poor survival.
- Existing clinical trials often lack sufficient representation of Stage IVA patients, limiting definitive conclusions.
Purpose of the Study:
- To systematically review and evaluate treatment outcomes for Stage IVA cervical cancer within Phase III clinical trials.
- To assess the efficacy of various therapeutic modalities, including chemoradiotherapy, adjuvant chemotherapy, and immunotherapy, in Stage IVA cervical cancer.
Main Methods:
- A systematic review adhering to PRISMA 2020 guidelines was conducted using two databases.
- Inclusion criteria focused on Phase III trials (2004-2024) specifically addressing Stage IVA cervical cancer.
- MeSH terms included 'cervical cancer', 'stage IVA', and 'locally advanced'; 12 articles met the criteria from an initial 761 identified.
Main Results:
- Analysis included 133 Stage IVA patients (3.8% of study populations).
- Chemoradiotherapy with cisplatin showed mixed results; adjuvant chemotherapy demonstrated no clear benefit.
- Immunotherapy yielded inconsistent findings, with one study showing benefit in Stage III-IVA patients (PFS HR 0.58; 95% CI: 0.42-0.8) and another showing no benefit in Stage IVA patients (OS HR 3.48; 95% CI: 0.52-23.29). Induction chemotherapy showed potential benefit in one study.
Conclusions:
- Clinical trials have historically underrepresented Stage IVA cervical cancer patients, hindering robust conclusions.
- The precise benefits of immunotherapy, adjuvant chemotherapy, and induction chemotherapy for Stage IVA disease remain uncertain due to mixed and limited evidence.
- Future research must prioritize the inclusion and individual analysis of a larger cohort of Stage IVA cervical cancer patients to inform treatment strategies.
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