Ignite Creation Date:
2025-12-24 @ 4:57 PM
Ignite Modification Date:
2025-12-28 @ 8:51 PM
Study NCT ID:
NCT05396950
Status:
NOT_YET_RECRUITING
Last Update Posted:
2025-04-24
First Post:
2022-04-10
Is Gene Therapy:
True
Has Adverse Events:
False
Brief Title:
CPAP for Motion Management in Breast Radiotherapy; and Lung & Liver SABR
Sponsor:
Waikato Hospital
Organization:
Study Overview
Official Title:
A Non Randomised Comparative Phase II Trial to Determine the Benefit of Continuous Positive Airway Pressure-assisted Radiotherapy vs Deep Inspiration Breath Hold in Breast Cancer and in Lung & Liver Stereotactic Ablative Body Radiotherapy
Status:
NOT_YET_RECRUITING
Status Verified Date:
2024-05
Last Known Status:
None
Delayed Posting:
No
If Stopped, Why?:
Not Stopped
Has Expanded Access:
False
If Expanded Access, NCT#:
N/A
Has Expanded Access, NCT# Status:
N/A
Acronym:
CPAP-RT
Brief Summary:
A phase II trial to determine the proportion of patients where the use of continuous positive airway pressure (CPAP) results in a superior radiation plan compared to standard planning procedures. The rationale for using CPAP with radiotherapy is based on its ability to increase the tidal volume, flatten the diaphragm thus reducing respiratory excursions.The resultant lung hyperinflation and reduced respiratory excursions can be harnessed for radiotherapy purposes by:
1. Displacing the heart away from the radiotherapy field
2. Reducing the volume of functional lung irradiated
3. Reducing the radiotherapy target motion
CPAP has been shown to be superior to free breathing radiotherapy (RT), however it remains unclear how much benefit it confers vs other motion management adjuncts such as deep inspiration breath hold (DIBH) or 4-DCT.
1. Displacing the heart away from the radiotherapy field
2. Reducing the volume of functional lung irradiated
3. Reducing the radiotherapy target motion
CPAP has been shown to be superior to free breathing radiotherapy (RT), however it remains unclear how much benefit it confers vs other motion management adjuncts such as deep inspiration breath hold (DIBH) or 4-DCT.
Detailed Description:
PRIMARY OBJECTIVE:
To determine the proportion of patients where the use of CPAP results in a superior radiation plan compared to standard planning procedures in each patient cohort
SECONDARY OBJECTIVES
To determine:
* Impact of CPAP on treatment delivery time;
* Impact of CPAP on total lung volume;
* CPAP compliance;
* Patient experience;
Breast-specific:
• Comparison of organ at risk (OAR) dose constraints between CPAP and deep DIBH)
SABR-specific:
* Internal target volume (ITV) reduction;
* OAR dose constraints between CPAP and standard planning procedures.
Breast cancer patients will undergo normal free breathing and DIBH radiotherapy planning scans. An additional scan with CPAP will be done for the purpose of the study. Radiotherapy plans will be produced on both the DIBH and CPAP planning scans. The planning scan with the best dosimetry will be chosen for treatment. If CPAP has a better radiation plan, then the patient will have CPAP administered during their daily RT. The DIBH plans for each patient, will serve as controls SABR patients will undergo the standard 4-D or breath hold CT and then CPAP CT for the purpose of the study. Respiratory movements will be monitored by Varian RPM system. Radiotherapy plans will be produced from the standard CT and the CPAP CT for comparison.
Patients will be treated on the best plan The trial aim to recruit 70 patients with invasive carcinoma of the breast undergoing adjuvant radiotherapy that includes breast/chest-wall plus regional lymph nodes, and a convenient sample size of those undergoing SABR to lung or liver
To determine the proportion of patients where the use of CPAP results in a superior radiation plan compared to standard planning procedures in each patient cohort
SECONDARY OBJECTIVES
To determine:
* Impact of CPAP on treatment delivery time;
* Impact of CPAP on total lung volume;
* CPAP compliance;
* Patient experience;
Breast-specific:
• Comparison of organ at risk (OAR) dose constraints between CPAP and deep DIBH)
SABR-specific:
* Internal target volume (ITV) reduction;
* OAR dose constraints between CPAP and standard planning procedures.
Breast cancer patients will undergo normal free breathing and DIBH radiotherapy planning scans. An additional scan with CPAP will be done for the purpose of the study. Radiotherapy plans will be produced on both the DIBH and CPAP planning scans. The planning scan with the best dosimetry will be chosen for treatment. If CPAP has a better radiation plan, then the patient will have CPAP administered during their daily RT. The DIBH plans for each patient, will serve as controls SABR patients will undergo the standard 4-D or breath hold CT and then CPAP CT for the purpose of the study. Respiratory movements will be monitored by Varian RPM system. Radiotherapy plans will be produced from the standard CT and the CPAP CT for comparison.
Patients will be treated on the best plan The trial aim to recruit 70 patients with invasive carcinoma of the breast undergoing adjuvant radiotherapy that includes breast/chest-wall plus regional lymph nodes, and a convenient sample size of those undergoing SABR to lung or liver
Study Oversight
Has Oversight DMC:
True
Is a FDA Regulated Drug?:
False
Is a FDA Regulated Device?:
False
Is an Unapproved Device?:
None
Is a PPSD?:
None
Is a US Export?:
None
Is an FDA AA801 Violation?: