Impact of Stress CT Myocardial Perfusion on Downstream Resources and Prognosis (CTP-PRO)
1 giugno 2026 aggiornato da: Gianluca Pontone, MD, PhD, Centro Cardiologico Monzino
Impact of Stress Cardiac Computed Tomography Myocardial Perfusion on Downstream Resources and PROgnosis in Patients With Suspected or Known Coronary Artery Disease: a Multicenter International Study
CT myocardial perfusion imaging (CTP) represents one of the newly developed CT-based techniques but its cost-effectiveness in the clinical pathway is undefined.
The aim of the study is to evaluate the usefulness of combined evaluation of coronary anatomy and myocardial perfusion in intermediate to high-risk patients for suspected CAD or with known disease in terms of clinical decision-making, resource utilization and outcomes in a broad variety of geographic areas and patient subgroups.
Panoramica dello studio
Stato
Attivo, non reclutante
Descrizione dettagliata
The use of cardiac computed tomography angiography (CCTA) is usually suggested in low to intermediate risk for its diagnostic and prognostic role to rule out CAD with low radiation exposure. In the setting of intermediate to high risk patients, the addition of functional information is prognostically useful and, in patients with previous history of percutaneous coronary intervention (PCI), functional strategy has been shown to be more cost-effective as compared to anatomical assessment CT myocardial perfusion imaging (CTP) represents one of the newly developed CT-based techniques, combining both anatomical and functional evaluation of CAD in a single imaging modality. More recently, stress CTP was shown to provide additional diagnostic value as compared to CCTA alone in intermediate to high risk patients. The purpose of this study will be to evaluate the usefulness and impact of combined evaluation of coronary artery anatomy and myocardial perfusion with CCTA+CTP in intermediate to high risk patients for suspected CAD or with known disease in terms of clinical decision-making, resource utilization, and outcomes in a broad variety of geographic areas and patient subgroups.
CTP-PRO study is a cooperative, international, multicentre, prospective, open-label, randomized controlled study evaluating the cost-effectiveness of a CCTA+CTP strategy versus usual care in intermediate to high risk patients with suspected or known CAD who undergo clinically indicated diagnostic evaluation.
Patients will be screened for study eligibility. Patients meeting all selection criteria will be asked to sign an informed consent document prior to undergoing any study-specific evaluation; then a structured interview will be performed and a clinical history obtained, assessing the presence of common cardiac risk factors, drug therapy (focus on statin, aspirin and/or antiplatelet agent use) and symptoms (typical or atypical angina, to estimate the pre-test likelihood of CAD).
Upon completion of the screening procedure and enrollment, the patients will be randomized 1:1 to the CT-based strategy (Group A) or usual care (Group B). Patient follow-up will be performed at 1 year (± 1 month) and 2 years (± 1 month) by trained interviewers who check medical records or by phone interview collecting the following information: downstream testing; overall radiation exposure; outcomes; cost-effectiveness estimation.
The primary endpoint of the study is the reclassification rate of CCTA in group B due to the addition of CTP. The secondary endpoint will be the comparison between group A and group B in terms of non-invasive and invasive downstream testing, prevalence of obstructive CAD at ICA, revascularization, cumulative ED and overall cost during the follow-up at 1- and 2-years. The tertiary endpoint will be the comparison between each group in terms of MACE and cost-effectiveness at 1- and 2-years.
Tipo di studio
Interventistico
Iscrizione (Stimato)
2000
Fase
- Non applicabile
Contatti e Sedi
Questa sezione fornisce i recapiti di coloro che conducono lo studio e informazioni su dove viene condotto lo studio.
Luoghi di studio
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MI
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Milan, MI, Italia, 20138
- Centro Cardiologico Monzino IRCCS
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Criteri di partecipazione
I ricercatori cercano persone che corrispondano a una certa descrizione, chiamata criteri di ammissibilità. Alcuni esempi di questi criteri sono le condizioni generali di salute di una persona o trattamenti precedenti.
Criteri di ammissibilità
Età idonea allo studio
18 anni e precedenti (Adulto, Adulto più anziano)
Accetta volontari sani
No
Descrizione
Inclusion Criteria:
- Consecutive patients (age ≥ 18 years) with known or suspected CAD referred for clinically indicated diagnostic evaluation.
- CCTA has to be performed with the state of art in terms of scanner technology as follow: Revolution CT (GE Healthcare, Milwaukee, WI), CardioGraphe (Arineta, Caesarea, Israel), SOMATOM Force (Siemens, Forchheim, Germany), Brilliance iCT and IQon CT (Philips, Best, Netherlands), Aquilion One Vision (Toshiba Medical Systems Corp., Otawara, Japan).
Exclusion Criteria:
- Performance of any non-invasive diagnostic testing within 90 days before enrollment
- Low to intermediate pre-test likelihood of CAD according to the updated Diamond-Forrester risk model score
- Acute coronary syndrome
- Need for an emergent procedure
- Evidence of clinical instability
- Contra-indication to contrast agent administration and/or impaired renal function
- Inability to sustain a breath hold
- Pregnancy
- Cardiac arrhythmias
- Presence of pace maker or implantable cardioverter defibrillator
- Contra-indications to the administration of sub-lingual nitrates, beta-blockade and adenosine
- Structural cardiomyopathy outside of suspected or know ischemic heart disease
Piano di studio
Questa sezione fornisce i dettagli del piano di studio, compreso il modo in cui lo studio è progettato e ciò che lo studio sta misurando.
Come è strutturato lo studio?
Dettagli di progettazione
- Scopo principale: Ricerca sui servizi sanitari
- Assegnazione: Randomizzato
- Modello interventistico: Assegnazione parallela
- Mascheramento: Nessuno (etichetta aperta)
Armi e interventi
Gruppo di partecipanti / Arm |
Intervento / Trattamento |
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Sperimentale: CCTA Strategy
CCTA will be performed with one of the latest generation scanners.
A stenosis > 50% will be considered as significant from an anatomical point of view.
For coronary stents, degree of intrastent restenosis will be evaluated by visual assessment of intraluminal contrast density.
ISR > 50% will be considered as significant from an anatomical point of view.
For CABG, each graft will be visually evaluated and scored as patent, non-significant stenosis ≤ 50%, significant stenosis > 50%, or occluded.
For patients with positive CCTA results, additional stress CTP will be performed subsequently.
If indicated, vasodilatation will be induced with i.v.
adenosine injection or regadenoson.
Static or dynamic CTP will be performed according to local practice and scanner technology available.
For all patients with previous history of MI the presence of reversible ischemia will be obtained by the comparison between rest and stress perfusion.
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When judged indicated, functional assessment with stress CTP perfusion will be performed on top of CCTA.
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Comparatore attivo: Standard of care Strategy
Patients randomized to this group will be evaluated according to current clinical guidelines with the following approaches: (a) stress ECG, or imaging-based tests such as Stress Echo, Stress CMR, SPECT or PET; (b) direct referral to ICA.
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(a) functional non-invasive tests (stress ECG, or imaging-based tests such as Stress Echo, Stress CMR, SPECT or PET) as a gatekeeper for ICA; (b) direct referral to ICA.
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Cosa sta misurando lo studio?
Misure di risultato primarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
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Reclassification rate of CCTA in group B due to the addition of CTP
Lasso di tempo: 30 days.
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For each enrolled patient in whom both CCTA and stress CTP will be performed, the endpoint review committee will use data from coronary CTA and CTP, along with the clinical data to determine the management plan using the following criteria: (a) optimal medical therapy, (b) more non-invasive information required, (c) invasive evaluation required, (d) revascularization treatment (PCI or CABG or hybrid treatment).
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30 days.
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Misure di risultato secondarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
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Downstream non-invasive testing
Lasso di tempo: 1- and 2-years.
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Comparison between group A and group B in terms of number of non-invasive downstream testing (Exercise EKG, Stress-Echo, SPECT, Stress CMR, PET) or invasive testing (invasive coronary angiography) performed after the randomization.
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1- and 2-years.
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Downstream invasive testing
Lasso di tempo: 1- and 2-years.
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Comparison between group A and group B in terms of number of downstream invasive testing (invasive coronary angiography) performed after the randomization.
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1- and 2-years.
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Prevalence of obstructive CAD at ICA
Lasso di tempo: 1- and 2-years.
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Comparison between group A and group B in terms of number of patients with obstructive CAD at ICA.
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1- and 2-years.
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Revascularization
Lasso di tempo: 1- and 2-years.
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Comparison between group A and group B in terms of number of patients treated with revascularization (PCI or CABG or hybrid treatment).
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1- and 2-years.
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Effective Dose
Lasso di tempo: 1- and 2-years.
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Comparison between group A and group B in terms of cumulative Effective Dose (ED), measured in mSv, due to non-invasive or invasive testing performed after randomization.
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1- and 2-years.
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Overall costs related to downstream diagnostic tests.
Lasso di tempo: 1- and 2-years.
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Comparison between group A and group B in terms of overall costs of downstream diagnostic tests (sum of costs of all diagnostic tests performed after randomization), expressed in Dollars, according to local reimbursement.
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1- and 2-years.
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Altre misure di risultato
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
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Hospitalization for cardiac reason
Lasso di tempo: 1- and 2-years.
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Comparison between group A and group B group in terms of number of patients that needed hospitalization for cardiac reason.
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1- and 2-years.
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Unstable angina
Lasso di tempo: 1- and 2-years.
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Comparison between group A and group B group in terms of number of patients that needed hospitalization for unstable angina (defined according to 2015 ESC Guidelines for the management of acute coronary syndromes in patients presenting without persistent ST-segment elevation.
Eur Heart J 2016:37,267-315).
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1- and 2-years.
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Non-fatal myocardial infarction
Lasso di tempo: 1- and 2-years.
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Comparison between group A and group B group in terms of number of patients that experienced non-fatal myocardial infarction (defined according to Fourth universal definition of myocardial infarction, 2018.
Eur Heart J 2019:40,237-269).
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1- and 2-years.
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Cardiac death
Lasso di tempo: 1- and 2-years.
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Comparison between group A and group B group in terms of number of patients that experienced death because of immediate cardiac cause (e.g., MI, low-output failure, fatal arrhythmia) or vascular cause (e.g., cerebrovascular disease, pulmonary embolism, ruptured aortic aneurysm, dissecting aneurysm, or other vascular cause).
Unwitnessed death and death of unknown cause will be classified as cardiovascular death.
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1- and 2-years.
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MACE (Major adverse cardiovascular events)
Lasso di tempo: 1- and 2-years.
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MACE will be defined as a combined endpoint of unstable angina, nonfatal MI, and cardiac death.
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1- and 2-years.
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Cost-effectiveness ratio
Lasso di tempo: 1- and 2-years.
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Cost-effectiveness ratio will be calculated according to the following equation: (Index test cost + downstream diagnostic tests cost) / projected remaining life expectancy.
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1- and 2-years.
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Collaboratori e investigatori
Qui è dove troverai le persone e le organizzazioni coinvolte in questo studio.
Sponsor
Collaboratori
Investigatori
- Investigatore principale: Gianluca Pontone, MD, PhD, Centro Cardiologico Monzino, IRCCS
Pubblicazioni e link utili
La persona responsabile dell'inserimento delle informazioni sullo studio fornisce volontariamente queste pubblicazioni. Questi possono riguardare qualsiasi cosa relativa allo studio.
Pubblicazioni generali
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- Thygesen K, Alpert JS, Jaffe AS, Chaitman BR, Bax JJ, Morrow DA, White HD; ESC Scientific Document Group. Fourth universal definition of myocardial infarction (2018). Eur Heart J. 2019 Jan 14;40(3):237-269. doi: 10.1093/eurheartj/ehy462. No abstract available.
- Task Force Members; Montalescot G, Sechtem U, Achenbach S, Andreotti F, Arden C, Budaj A, Bugiardini R, Crea F, Cuisset T, Di Mario C, Ferreira JR, Gersh BJ, Gitt AK, Hulot JS, Marx N, Opie LH, Pfisterer M, Prescott E, Ruschitzka F, Sabate M, Senior R, Taggart DP, van der Wall EE, Vrints CJ; ESC Committee for Practice Guidelines; Zamorano JL, Achenbach S, Baumgartner H, Bax JJ, Bueno H, Dean V, Deaton C, Erol C, Fagard R, Ferrari R, Hasdai D, Hoes AW, Kirchhof P, Knuuti J, Kolh P, Lancellotti P, Linhart A, Nihoyannopoulos P, Piepoli MF, Ponikowski P, Sirnes PA, Tamargo JL, Tendera M, Torbicki A, Wijns W, Windecker S; Document Reviewers; Knuuti J, Valgimigli M, Bueno H, Claeys MJ, Donner-Banzhoff N, Erol C, Frank H, Funck-Brentano C, Gaemperli O, Gonzalez-Juanatey JR, Hamilos M, Hasdai D, Husted S, James SK, Kervinen K, Kolh P, Kristensen SD, Lancellotti P, Maggioni AP, Piepoli MF, Pries AR, Romeo F, Ryden L, Simoons ML, Sirnes PA, Steg PG, Timmis A, Wijns W, Windecker S, Yildirir A, Zamorano JL. 2013 ESC guidelines on the management of stable coronary artery disease: the Task Force on the management of stable coronary artery disease of the European Society of Cardiology. Eur Heart J. 2013 Oct;34(38):2949-3003. doi: 10.1093/eurheartj/eht296. Epub 2013 Aug 30. No abstract available.
Studiare le date dei record
Queste date tengono traccia dell'avanzamento della registrazione dello studio e dell'invio dei risultati di sintesi a ClinicalTrials.gov. I record degli studi e i risultati riportati vengono esaminati dalla National Library of Medicine (NLM) per assicurarsi che soddisfino specifici standard di controllo della qualità prima di essere pubblicati sul sito Web pubblico.
Studia le date principali
Inizio studio (Effettivo)
1 luglio 2019
Completamento primario (Stimato)
30 giugno 2026
Completamento dello studio (Stimato)
30 giugno 2027
Date di iscrizione allo studio
Primo inviato
30 maggio 2019
Primo inviato che soddisfa i criteri di controllo qualità
4 giugno 2019
Primo Inserito (Effettivo)
6 giugno 2019
Aggiornamenti dei record di studio
Ultimo aggiornamento pubblicato (Effettivo)
3 giugno 2026
Ultimo aggiornamento inviato che soddisfa i criteri QC
1 giugno 2026
Ultimo verificato
1 giugno 2026
Maggiori informazioni
Termini relativi a questo studio
Termini MeSH pertinenti aggiuntivi
Altri numeri di identificazione dello studio
- R993/19-CCM 1044
Informazioni su farmaci e dispositivi, documenti di studio
Studia un prodotto farmaceutico regolamentato dalla FDA degli Stati Uniti
No
Studia un dispositivo regolamentato dalla FDA degli Stati Uniti
No
Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .