Study to Test Shorter Duration Chemoradiation Therapy Versus Standard Duration Chemoradiation Therapy for Cervical Cancer

November 4, 2026 updated by: NRG Oncology

A Phase III Non-Inferiority Trial of Hypofractionated Chemoradiation Therapy Versus Standard Chemoradiation for Cervical Cancer

This phase III trial compares the effect of a shorter duration (hypofractionated) of intensity-modulated radiation therapy (IMRT) with brachytherapy and cisplatin to standard duration IMRT with brachytherapy and cisplatin in treating patients with newly diagnosed stage IB2-IIIC1 cervical cancer. Cisplatin is in a class of medications known as platinum-containing compounds. It works by killing, stopping or slowing the growth of tumor cells. Radiation therapy uses high energy x-rays, particles, or radioactive seeds to kill tumor cells and shrink tumors. IMRT is a type of 3-dimensional radiation therapy that uses computer-generated images to show the size and shape of the tumor. Thin beams of radiation of different intensities are aimed at the tumor from many angles. This type of radiation therapy reduces the damage to healthy tissue near the tumor. Hypofractionated radiation therapy delivers higher doses of radiation therapy over a shorter period of time and may kill more tumor cells and have fewer side effects. A radiation boost is extra radiation to the area where the tumor is located which increases the amount of radiation given to the tumor bed. Brachytherapy, also known as internal radiation therapy, uses radioactive material placed directly into or near a tumor to kill tumor cells. Giving hypofractionated chemoradiation therapy may be as safe, tolerable and/or effective as the standard, longer course of chemoradiation therapy in treating patients newly diagnosed with stage IB2-IIIC1 cervical cancer.

Study Overview

Detailed Description

PRIMARY OBJECTIVE:

I. To determine if hypofractionated IMRT with concurrent cisplatin and brachytherapy boost is non-inferior to conventionally fractionated treatment with respect to progression-free survival (PFS).

SECONDARY OBJECTIVES:

I. To estimate the rates of timely treatment completion. II. To determine the nature and degree of toxicity of hypofractionated IMRT with concurrent cisplatin and brachytherapy as assessed by Common Terminology Criteria for Adverse Events (CTCAE) version (v) 5.

III. To evaluate late toxicity, progression-free survival, and overall survival (OS) at 3 years.

OUTLINE: Patients are randomized to 1 of 2 arms.

ARM 1: Patients undergo IMRT with a simultaneous integrated boost once daily (QD) on Monday-Friday weekly for up to 5 weeks (25 treatment fractions) followed by brachytherapy for up to 3-5 treatment fractions in the absence of disease progression or unacceptable toxicity. Patients receive cisplatin intravenously (IV) once weekly (QW) for up to 5 cycles while undergoing IMRT in the absence of disease progression or unacceptable toxicity. Additionally, patients undergo blood sample collection and positron emission tomography (PET)/computed tomography (CT), CT, or magnetic resonance imaging (MRI) throughout the study.

ARM 2: Patients undergo hypofractionated IMRT QD on 5 days per week for up to 3-4 weeks (15 treatment fractions) then a nodal boost (if indicated) for up to 4 treatment fractions followed by brachytherapy for up to 3-5 treatment fractions in the absence of disease progression or unacceptable toxicity. Patients receive cisplatin IV QW for up to 5 cycles while undergoing IMRT in the absence of disease progression or unacceptable toxicity. Additionally, patients undergo blood sample collection and PET/CT, CT, or MRI throughout the study.

After completion of study treatment, patients are followed up at 30 days, every 3 months for 2 years then every 6 months for up to 3 years.

Study Type

Interventional

Enrollment (Estimated)

550

Phase

  • Phase 3

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Patients must have histologically confirmed newly diagnosed cervical cancer. Eligible pathologic types: squamous cell carcinoma, adenocarcinoma, adenosquamous cell carcinoma
  • Patients must have a diagnosis of Federation of Gynecology and Obstetrics (FIGO) 2018 stage IB2 (T1B2, N0), stage IB3 (T1B3N0), II (T2A-B, N0), IIIC1 (T1B2-3, N1), or IIIC1 (T2A-B, N1) squamous, adenocarcinoma, or adenosquamous carcinoma of the uterine cervix not amenable to curative surgical resection alone
  • Negative for para-aortic disease AND treating physician does not plan to treat para-aortic nodes
  • Radiologic definition of lymph node staging:

N1:

  • One or more pelvic lymph nodes with short axis diameter of ≥ 15 mm (axial plane) by CT or MRI, and/or

  • One or more pelvic lymph nodes with short axis diameter of ≥ 10 mm and standarized uptake value maximum (SUVmax) ≥ 2.5 by fludeoxyglucose F-18 (FDG)-PET

    • No prior definitive surgical, radiation, or systemic therapy for cervical cancer. Induction chemotherapy with weekly carboplatin (area under curve [AUC]2) and paclitaxel (80 mg/m^2) for up to 6 weeks is allowed prior to study entry. This is the only permissible induction chemotherapy regimen prior to study entry
    • No prior or concurrent immunotherapy
    • No prior pelvic radiation therapy
    • Age ≥/= 18
    • Eastern Cooperative Oncology Group (ECOG) performance status of 0, 1, or 2
    • Not pregnant and not nursing
    • Absolute neutrophil count (ANC) ≥ 1,500 cells/mm^3
    • Platelets ≥ 100,000 cells/mm^3
    • Hemoglobin ≥ 8 g/dl (Note: The use of transfusion or other intervention to achieve hemoglobin [Hgb] ≥ 8 g/dl is acceptable)
    • Creatinine clearance (CrCL) of ≥ 30 mL/min by the Cockcroft-Gault formula
    • Total bilirubin ≤ 1.5 x institutional upper limit of normal (ULN) (patients with known Gilbert's disease who have bilirubin level ≤ 3 x institutional ULN may be enrolled)
    • Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) ≤ 3 x institutional ULN
    • Patients with known history or current symptoms of cardiac disease, or history of treatment with cardiotoxic agents, should have a clinical risk assessment of cardiac function using the New York Heart Association Functional Classification. To be eligible for this trial, patients should be class II B or better
    • No active infection requiring parenteral antibiotics
    • No current evidence of intra-abdominal abscess, abdominal/pelvic fistula (not diverted), gastrointestinal perforation, gastrointestinal (GI) obstruction, and/or need for drainage nasogastric or gastrostomy tube
    • No history of allergic reaction to cisplatin or compounds of similar chemical or biologic composition

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Active Comparator: Arm 1 (standard IMRT, brachytherapy, cisplatin)

Patients undergo IMRT with a simultaneous integrated boost QD on Monday-Friday weekly for up to 5 weeks (25 treatment fractions) followed by brachytherapy for up to 3-5 treatment fractions in the absence of disease progression or unacceptable toxicity. Patients receive cisplatin IV QW for up to 5 cycles while undergoing IMRT in the absence of disease progression or unacceptable toxicity. Additionally, patients undergo blood sample collection and PET/CT, CT, or MRI throughout the study.

Given IV

Other Names:
  • CDDP
  • Cis-diamminedichloridoplatinum
  • Cismaplat
  • Cisplatinum
  • Neoplatin
  • Platinol
  • Abiplatin
  • Blastolem
  • Briplatin
  • Cis-diammine-dichloroplatinum
  • Cis-diamminedichloro Platinum (II)
  • Cis-diamminedichloroplatinum
  • Cis-dichloroammine Platinum (II)
  • Cis-platinous Diamine Dichloride
  • Cis-platinum
  • Cis-platinum II
  • Cis-platinum II Diamine Dichloride
  • Cisplatina
  • Cisplatyl
  • Citoplatino
  • Citosin
  • Cysplatyna
  • DDP
  • Lederplatin
  • Metaplatin
  • Peyrone's Chloride
  • Peyrone's Salt
  • Placis
  • Plastistil
  • Platamine
  • Platiblastin
  • Platiblastin-S
  • Platinex
  • Platinol- AQ
  • Platinol-AQ
  • Platinol-AQ VHA Plus
  • Platinoxan
  • Platinum
  • Platinum Diamminodichloride
  • Platiran
  • Platistin
  • Platosin

Undergo blood sample collection

Other Names:
  • Biological Sample Collection
  • Biospecimen Collected
  • Specimen Collection
  • Sample Collection

Undergo MRI

Other Names:
  • MRI
  • Magnetic Resonance
  • Magnetic Resonance Imaging Scan
  • Medical Imaging, Magnetic Resonance / Nuclear Magnetic Resonance
  • MR
  • MR Imaging
  • MRI Scan
  • NMR Imaging
  • NMRI
  • Nuclear Magnetic Resonance Imaging
  • Magnetic Resonance Imaging (MRI)
  • sMRI
  • Magnetic resonance imaging (procedure)
  • MRIs
  • Structural MRI

Undergo CT or PET/CT

Other Names:
  • CT
  • CAT
  • CAT Scan
  • Computed Axial Tomography
  • Computerized Axial Tomography
  • Computerized Tomography
  • CT Scan
  • tomography
  • Computerized axial tomography (procedure)
  • Computerized Tomography (CT) scan
  • Diagnostic CAT Scan
  • Diagnostic CAT Scan Service Type

Undergo PET/CT

Other Names:
  • Medical Imaging, Positron Emission Tomography
  • PET
  • PET Scan
  • Positron Emission Tomography Scan
  • Positron-Emission Tomography
  • PT
  • Positron emission tomography (procedure)

Undergo IMRT

Other Names:
  • IMRT
  • Intensity Modulated RT
  • Intensity-Modulated Radiotherapy
  • Radiation, Intensity-Modulated Radiotherapy
  • Intensity modulated radiation therapy (procedure)

Undergo brachytherapy

Other Names:
  • Brachytherapy, NOS
  • Internal Radiation
  • Internal Radiation Brachytherapy
  • Internal Radiation Therapy
  • Radiation Brachytherapy
  • Radiation, Internal

Undergo integrated boost

Other Names:
  • Boost Radiation
  • Boost Radiation Therapy
  • Boost Radiotherapy
  • Radiation Therapy Boost
  • Radiotherapy Boost
  • BOOST

Undergo a nodal boost

Other Names:
  • Boost Radiation
  • Boost Radiation Therapy
  • Boost Radiotherapy
  • Radiation Therapy Boost
  • Radiotherapy Boost
  • BOOST
Experimental: Arm 2 (hypofractionated IMRT, brachytherapy, cisplatin)

Patients undergo hypofractionated IMRT QD on 5 days per week for up to 3-4 weeks (15 treatment fractions) then a nodal boost (if indicated) for up to 4 treatment fractions followed by brachytherapy for up to 3-5 treatment fractions in the absence of disease progression or unacceptable toxicity. Patients receive cisplatin IV QW for up to 5 cycles while undergoing IMRT in the absence of disease progression or unacceptable toxicity. Additionally, patients undergo blood sample collection and PET/CT, CT, or MRI throughout the study.

Given IV

Other Names:
  • CDDP
  • Cis-diamminedichloridoplatinum
  • Cismaplat
  • Cisplatinum
  • Neoplatin
  • Platinol
  • Abiplatin
  • Blastolem
  • Briplatin
  • Cis-diammine-dichloroplatinum
  • Cis-diamminedichloro Platinum (II)
  • Cis-diamminedichloroplatinum
  • Cis-dichloroammine Platinum (II)
  • Cis-platinous Diamine Dichloride
  • Cis-platinum
  • Cis-platinum II
  • Cis-platinum II Diamine Dichloride
  • Cisplatina
  • Cisplatyl
  • Citoplatino
  • Citosin
  • Cysplatyna
  • DDP
  • Lederplatin
  • Metaplatin
  • Peyrone's Chloride
  • Peyrone's Salt
  • Placis
  • Plastistil
  • Platamine
  • Platiblastin
  • Platiblastin-S
  • Platinex
  • Platinol- AQ
  • Platinol-AQ
  • Platinol-AQ VHA Plus
  • Platinoxan
  • Platinum
  • Platinum Diamminodichloride
  • Platiran
  • Platistin
  • Platosin

Undergo blood sample collection

Other Names:
  • Biological Sample Collection
  • Biospecimen Collected
  • Specimen Collection
  • Sample Collection

Undergo MRI

Other Names:
  • MRI
  • Magnetic Resonance
  • Magnetic Resonance Imaging Scan
  • Medical Imaging, Magnetic Resonance / Nuclear Magnetic Resonance
  • MR
  • MR Imaging
  • MRI Scan
  • NMR Imaging
  • NMRI
  • Nuclear Magnetic Resonance Imaging
  • Magnetic Resonance Imaging (MRI)
  • sMRI
  • Magnetic resonance imaging (procedure)
  • MRIs
  • Structural MRI

Undergo CT or PET/CT

Other Names:
  • CT
  • CAT
  • CAT Scan
  • Computed Axial Tomography
  • Computerized Axial Tomography
  • Computerized Tomography
  • CT Scan
  • tomography
  • Computerized axial tomography (procedure)
  • Computerized Tomography (CT) scan
  • Diagnostic CAT Scan
  • Diagnostic CAT Scan Service Type

Undergo PET/CT

Other Names:
  • Medical Imaging, Positron Emission Tomography
  • PET
  • PET Scan
  • Positron Emission Tomography Scan
  • Positron-Emission Tomography
  • PT
  • Positron emission tomography (procedure)

Undergo brachytherapy

Other Names:
  • Brachytherapy, NOS
  • Internal Radiation
  • Internal Radiation Brachytherapy
  • Internal Radiation Therapy
  • Radiation Brachytherapy
  • Radiation, Internal

Undergo integrated boost

Other Names:
  • Boost Radiation
  • Boost Radiation Therapy
  • Boost Radiotherapy
  • Radiation Therapy Boost
  • Radiotherapy Boost
  • BOOST

Undergo a nodal boost

Other Names:
  • Boost Radiation
  • Boost Radiation Therapy
  • Boost Radiotherapy
  • Radiation Therapy Boost
  • Radiotherapy Boost
  • BOOST

Undergo hypofractionated IMRT

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Progression-free survival (PFS)
Time Frame: From randomization to first occurrence of disease progression or death from any cause, whichever occurs first, assessed up to 3 years

Tests will be based on stratified log-rank tests to assess the randomized treatment effect among all randomized patients. Analyses will be supported by the intent-to-treat population, with patients analyzed according to their randomized treatment assignment. The log-rank tests will be stratified by the factor recorded at randomization. The treatment hazard ratio estimates and their 95% confidence intervals for the interim and primary analyses will be estimated using Cox proportional hazards models specified with a main effect for the randomized treatment assignment and stratified by the factor recorded at randomization.

From randomization to first occurrence of disease progression or death from any cause, whichever occurs first, assessed up to 3 years

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Rates of timely treatment completion
Time Frame: From initiation of the assigned protocol therapy to treatment completion, assessed up to 46 days (for control arm) and up to 56 days (for experimental arm)

Will be defined as completing treatment within the protocol specified timeframes. Will be estimated for each treatment arm using binomial method, with corresponding confidence intervals, and the difference between treatment arms will be evaluated using 2-sided Fisher's exact test.

From initiation of the assigned protocol therapy to treatment completion, assessed up to 46 days (for control arm) and up to 56 days (for experimental arm)
Incidence of acute adverse events (AEs)
Time Frame: Up to 30 days after last dose of study treatment

The nature, frequency, and degree will be tabulated at the system organ class and AE-specific term levels using Common Terminology Criteria for Adverse Events (CTCAE) version (v) 5.0. Each patient will be represented by the maximum grade observed for each term. Tabulations will present the number and percentage of patients by maximum grade, within the treatment group received, regardless of the randomized treatment assignment. Will be dichotomized as severe (grade 3 or higher) or non-severe (grade 2 or lower). The proportion of patients experiencing severe toxicity will be estimated for each arm using the binomial method. The difference in proportions (experimental minus control) and its two-sided 90% confidence interval will be calculated. A 2-sided Fisher's exact test will be used to evaluate whether the distribution of severe toxicity differs between the 2 arms at 10% significance level.

Up to 30 days after last dose of study treatment
Incidence of late AEs
Time Frame: During follow-up beyond 30 days after stopping protocol treatment, assessed up to 3 years

The nature, frequency, and degree will be tabulated at the system organ class and AE-specific term levels using CTCAE v 5.0. Each patient will be represented by the maximum grade observed for each term. Tabulations will present the number and percentage of patients by maximum grade, within the treatment group received, regardless of the randomized treatment assignment. Will be dichotomized as severe (grade 3 or higher) or non-severe (grade 2 or lower). The proportion of patients experiencing severe toxicity will be estimated for each arm using the binomial method. The difference in proportions (experimental minus control) and its two-sided 90% confidence interval will be calculated. A 2-sided Fisher's exact test will be used to evaluate whether the distribution of severe toxicity differs between the 2 arms at 10% significance level.

During follow-up beyond 30 days after stopping protocol treatment, assessed up to 3 years
PFS
Time Frame: At 3 years

Will be estimated for each arm using Kaplan-Meier method. The distributions by treatment arm will be illustrated with Kaplan-Meier curves.

At 3 years
Overall survival
Time Frame: At 3 years

Will be estimated for each arm using Kaplan-Meier method. The distributions by treatment arm will be illustrated with Kaplan-Meier curves. The treatment effect (Arm 2 versus Arm 1) will be evaluated using a 2-sided log-rank test, stratified by the factor specified at randomization. The hazard ratio and its 95% confidence intervals will be estimated using a Cox proportional hazards model, including main effects for the randomized treatment assignment (Arm 2 vs Arm 1) and stratified by the factor specified at randomization.

At 3 years

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Investigators

  • Principal Investigator: Christina Henson, NRG Oncology

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

May 19, 2027

Primary Completion (Estimated)

January 31, 2034

Study Completion (Estimated)

January 31, 2035

Study Registration Dates

First Submitted

November 4, 2026

First Submitted That Met QC Criteria

November 4, 2026

First Posted (Actual)

November 10, 2026

Study Record Updates

Last Update Posted (Actual)

November 10, 2026

Last Update Submitted That Met QC Criteria

November 4, 2026

Last Verified

November 1, 2026

More Information

Terms related to this study

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

Subscribe