- ICH GCP
- US Clinical Trials Registry
- Klinisk forsøg NCT02617888
Effects of Heart Imaging Radiation on DNA Double-Stranded Breaks in Blood Lymphocytes and Hair Follicle Cells
The HEART BREAK Study: Effects of Heart Imaging Radiation on DNA Double-Stranded Breaks in Blood Lymphocytes and Hair Follicle Cells
Purpose
- To investigate the effects of cardiac imaging radiation on the induction of DNA double-strand breaks by enumerating gamma-H2AX foci in blood lymphocytes and plucked hair follicle cells.
- To estimate whether the use of breast shields in cardiac computed tomographic angiography (CCTA) limits the effective radiation exposure of breast tissue.
Studieoversigt
Status
Betingelser
Intervention / Behandling
Detaljeret beskrivelse
The primary objective of the study is to analyze blood and hair samples from patients undergoing cardiac imaging to estimate radiation exposure levels as well as their biological effects (i.e. to determine the degree of genotoxicity by measuring the amounts of DNA double-strand breaks).
The secondary objective is to investigate whether the use of in-plane breast shielding in female patients undergoing CT angiography (CCTA) limits the radiation exposure of breast tissue and subsequent DNA damage in blood lymphocytes and hair follicle cells.
Undersøgelsestype
Tilmelding (Faktiske)
Fase
- Ikke anvendelig
Deltagelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Beskrivelse
Inclusion Criteria:
- Adult male and female adult subjects (age greater than 18 years)
- Referred for cardiac computed tomography angiography (CCTA), myocardial perfusion scintigraphy (MPS), or diagnostic invasive coronary angiography (ICA).
Exclusion Criteria:
- Female patients that identify themselves as pregnant or have a positive pregnancy test prior to cardiac imaging.
- History (present or past) of leukemia or lymphoma.
- History of radiation therapy
- X-ray examination or scintigraphy within the last 72 hours.
- History of coronary revascularization (coronary artery bypass grafting or percutaneous coronary intervention)
- Patients undergoing percutaneous coronary intervention at completion of diagnostic left heart catheterization
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Diagnostisk
- Tildeling: Randomiseret
- Interventionel model: Parallel tildeling
- Maskning: Ingen (Åben etiket)
Våben og indgreb
Deltagergruppe / Arm |
Intervention / Behandling |
|---|---|
|
Aktiv komparator: CCTA Breast Shields
Within female subset, randomization to wearing bismuth breast shield.
|
Breast shield placement (randomized) among women.
Andre navne:
|
|
Ingen indgriben: CCTA No Breast Shields
Within female subset, randomization to wearing no bismuth breast shield (standard of care).
|
|
|
Ingen indgriben: Observational Arm
Non-females undergoing CTA and subjects undergoing cardiac catheterization and nuclear medicine testing.
|
Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Number of Excess Double-strand DNA Break Foci Per Cell in Peripheral Blood Samples Post-imaging
Tidsramme: Change from baseline double strand DNA breaks at 30 minutes post-imaging
|
The amount of excess DNA double-strand break foci per cell after cardiac computed tomographic angiography (CCTA) in female patients with and without breast shields, minus the amount of foci prior to CCTA.
In addition, changes in DNA double-strand breaks from baseline following cardiac testing in the observational arm is being assessed in an observational manner.
|
Change from baseline double strand DNA breaks at 30 minutes post-imaging
|
Samarbejdspartnere og efterforskere
Datoer for undersøgelser
Studer store datoer
Studiestart
Primær færdiggørelse (Faktiske)
Studieafslutning (Faktiske)
Datoer for studieregistrering
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først opslået (Skøn)
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Nøgleord
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
- 362425
Plan for individuelle deltagerdata (IPD)
Planlægger du at dele individuelle deltagerdata (IPD)?
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