Pembrolizumab Registry for Outcomes and Treatment Evaluation in Cervical Cancer
PROTECx
1 other identifier
interventional
261
1 country
11
Brief Summary
This is a nationwide, multicenter, registry-based prospective cohort study to assess real-world effectiveness of treatment with a pembrolizumab containing regimen in persistent, recurrent, or metastatic cervical cancer. Patients in the observation cohort continue treatment according to standard of care. In the discontinuation cohort, patients discontinue their maintenance treatment with pembrolizumab (with or without discontinuation of bevacizumab). Patients may choose to discontinue pembrolizumab prematurely (with or without discontinuation of bevacizumab) if they achieve a confirmed CR or a confirmed PR to treatment, or on patient's request or due to toxicity. If an eligible patient chooses not to discontinue treatment early they will remain in the observation cohort. The duration of the trial for the individual patient will be until two years from the start of treatment. Survival follow-up will continue for a maximum of 10 years
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for phase_4
Started May 2026
Longer than P75 for phase_4
11 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
January 5, 2026
CompletedStudy Start
First participant enrolled
May 11, 2026
CompletedFirst Posted
Study publicly available on registry
June 12, 2026
CompletedPrimary Completion
Last participant's last visit for primary outcome
May 1, 2030
ExpectedStudy Completion
Last participant's last visit for all outcomes
February 1, 2039
June 12, 2026
May 1, 2026
4 years
January 5, 2026
June 11, 2026
Conditions
Outcome Measures
Primary Outcomes (1)
Evaluate the progression-free survival (PFS) and compare to the KEYNOTE-826 trial
To evaluate the progression PFS at 12 months and compare it to the historical PFS at 12 months of the KEYNOTE-826 trial. PFS is defined as the time from start of first line treatment to the first documented disease progression or death due to any cause, whichever occurs first.
12 months; for all patients
Secondary Outcomes (8)
Evaluate progression-free survival (PFS) at 12- and 24 months
12 and 24 months; for all patients
To evaluate Overall Survival (OS)
From enrollment till the end of survival follow-up of ten years or death. Median OS is estimated to be available at the half of total inclusion period (1,5 of 3 years) + median OS from registration trial, so expected at 56 months from trial start
Evaluate objective response rate (ORR)
The ORR will be evaluated if all patients have had all response evaluations, this will be estimated at around 5 years (3 year inclusion + 2 year follow-up) after start of study.
Evaluate duration of response (DoR)
from enrollement till disease progression, follow-up or death assesed up to about 48 months since commencement of treatment.
To describe the percentage of patients that develop immune-related endocrinopathies
from commencement of treatment to the end of regular follow-up (+/- 48 months) or disease progression.
- +3 more secondary outcomes
Study Arms (2)
Observation cohort
NO INTERVENTIONThe observation cohort will consist of all participants who receive standard of care treatment and are not eligible for the discontinuation cohort or do not wish to discontinue treatment. Patients will be asked to complete questionnaires every 12 weeks.
Discontinuation cohort
EXPERIMENTALThe discontinuation cohort will consist of participants who discontinue pembrolizumab (with or without discontinuation of bevacizumab) therapy early according to the inclusion criteria listed in the study protocol. Additionally, will be asked to complete questionnaires every 12 weeks.
Interventions
1. Keytruda, (L01XC18), pembrolizumab, intravenous administration (administered as standard of care). 2. Avastin, (L01FG01), bevacizumab, intravenous administration (administered as standard of care).
Eligibility Criteria
You may qualify if:
- Persistent, recurrent, or metastatic cervical cancer commencing treatment or currently treated with a pembrolizumab containing regimen.
- Choice made to stop pembrolizumab for one of the following reasons:
- Confirmed complete response if they had received at least 8 cycles of 3- weekly pembrolizumab, including at least 9 weeks beyond a CR (consistent with KEYNOTE-826 criteria) OR
- Immune-related toxicity grade ≥ 3 OR
- Patient's preference (e.g. chronic or invalidating grade 1-2 immune-related toxicity) OR
- Confirmed partial response if they had received at least 8 cycles of 3- weekly pembrolizumab, including at least 9 weeks beyond a PR (timing consistent with KEYNOTE-826 criteria)
- Eligible and willing to discontinue pembrolizumab (with or without discontinuing bevacizumab)
You may not qualify if:
- Malignant other disease other than cervical carcinoma that required active treatment in the past 2 years: Participants with basal cell carcinoma of the skin, squamous cell carcinoma of the skin, transitional cell carcinoma of urothelial cancer, or any carcinoma in situ that have undergone potentially curative therapy are not excluded
- Any psychological, familial, sociological or geographical condition or a known psychiatric or substance abuse disorder potentially hampering compliance with the study protocol and follow-up schedule; those conditions should be discussed with the patient before registration in the trial. This comprises each and every condition or circumstance preventing the patient from showing up to the outpatient controls and/or undergoing the CT-scans, or preventing the patient from (adequately) filling out the questionnaires.
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (11)
Amsterdam UMC
Amsterdam, Netherlands
Antoni van Leeuwenhoek Ziekenhuis
Amsterdam, Netherlands
Catharina Ziekenhuis
Eindhoven, Netherlands
Medisch Spectrum Twente
Enschede, Netherlands
University Mecdical Center Groningen
Groningen, 9713 GZ, Netherlands
LUMC
Leiden, Netherlands
Maastricht UMC
Maastricht, Netherlands
Radboud UMC
Nijmegen, Netherlands
Erasmus MC
Rotterdam, Netherlands
UMC Utrecht
Utrecht, Netherlands
Isala Klinieken
Zwolle, Netherlands
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Intervention Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
M. Jalving
University Medical Center Groningen
Central Study Contacts
Study Design
- Study Type
- interventional
- Phase
- phase 4
- Allocation
- NON RANDOMIZED
- Masking
- NONE
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- OTHER
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
January 5, 2026
First Posted
June 12, 2026
Study Start
May 11, 2026
Primary Completion (Estimated)
May 1, 2030
Study Completion (Estimated)
February 1, 2039
Last Updated
June 12, 2026
Record last verified: 2026-05