Intermediate Risk Cervical Cancer: Radical Surgery +/- Adjuvant Radiotherapy

Summary

The objective of the trial is to evaluate if adjuvant (chemo)radiation is associated with a disease-free survival benefit after radical surgery in patients with intermediate risk cervical cancer. The primary endpoint of the study is the disease-free survival from the day of randomisation. A total of 514 patients are required to achieve 80% power on 5% significance level with non-inferiority margin of 5% to test the difference between the ARMs using Cox proportional hazards model. The maximal tolerated margin for non-inferiority in 2-year DFS is 5% (including expected drop-out rate of 10%).

Eligibility

Inclusion Criteria:

* Pathologically confirmed invasive cervical cancer
* FIGO IB1-IIA
* Squamous cell cancer or HPV-related adenocarcinoma
* Presence of tumour-related risk factors as follows:

  1. tumour ≥4 cm OR
  2. tumour\>2 cm \<4 cm AND lymphovascular space invasion OR
  3. tumour \>2 cm \<4 cm AND tumour free distance \<3 mm OR
  4. tumour \>2 cm \<4 cm AND deep stromal invasion (\>2/3)
* No evidence of suspicious pelvic lymph nodes or distant metastases on imaging (by radiological subjective assessment before surgery and negative pelvic LN on final pathology)
* ECOG performance status 0-1
* Deemed suitable and fit for radical surgery followed by adjuvant radiotherapy
* Negative pregnancy test (if applicable)
* Negative HIV test (only performed in high-risk countries or patients who have moved from those countries within the past 10 years)

Exclusion Criteria:

* Adenosquamous cancer or adenocarcinoma unusual type (non-HPV related - such as: mucinous, clear cell, mesonephric) or other rare tumour types (those not listed in the inclusion criteria)
* Inconclusive primary site of disease
* Unequivocally positive lymph node by imaging (by radiological subjective assessment)
* FIGO \<IB1 / \>IIA
* Previous pelvic malignancy
* History of second primary cancer outside pelvis if ≤ 3 years complete clinical remission (CCR)
* Previous pelvic radiotherapy
* Neoadjuvant chemotherapy prior surgical treatment
* Low likelihood of patient compliance to the follow-up

Conditions2

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