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Table 1 Summary of areas of consensus and disagreement with respect to the design of a clinical trial evaluating the effectiveness of targeted screening for thoracic aortic disease

From: Report of a Delphi exercise to inform the design of a research programme on screening for thoracic aortic disease

Area

Question

Summary answer

Imaging

Should relatives of patients affected by non-syndromic aortic disease undergo an imaging test?

Yes (95%)

Which imaging test should be used in cases in which no clear genetic condition can be identified?

MRI (79%)

Echocardiogram (21%)

CT scan (21%)

Which imaging test should be employed in cases in which a genetic condition can be identified?

MRI (82%)

Echocardiogram (36%)

CT scan (45%)

What should be the method of choice for follow-up in relatives with an uncertain genetic variant?

MRI (84%)

Echocardiogram (21%)

CT scan (16%)

Starting from what age should relatives be screened with an imaging test?

16 years (19%)

18 years (19%)

10 years before (19%)

What should be the optimal follow-up rate?

1 year (70–100%)

Consensus not reached for:

-Family history (SDR)

Genetic testing

Should incidental findings be a reason to adopt a more focused test?

Yes (95%)

Who should be involved in genetic screening?

FDR (100%)

SDR (45%)

TDR (10%)

When would a patient (with a previous negative or inconclusive genetic test result) require re-testing?

Newly diagnosed FDR (95%)

New evidence of pathogenic variants (100%)

Is it appropriate to store a sample from a patient affected by aortic dissection in any case during an urgent operation, for the purpose of genetic testing?

Yes (95%)

Is it appropriate to discuss genetic testing with the family after an urgent surgery for aortic dissection?

Yes (95%)

Is it appropriate to discuss genetic testing with the family after a patient dies from aortic dissection?

Yes (100%)

Genetic counselling

Who should be the professional figure involved in informing patients about genetic risk (and therefore referring them to a clinical geneticist)?

Cardiac surgeon (69%)

Should a multidisciplinary team be involved in the management of these families? What professional figures should be involved from the outset?

Clinical geneticist (100%)

Cardiac surgeon (95%)

Cardiologist (90%)

Radiologist (84%)

Psychologist (69%)

How many years before the youngest person dissects for that gene should we start surveillance?

5 years (33%)

10 years (47%)

Regarding the age peak in the risk of dissection, is it best to consider the mean value or the lowest one to plan screening?

Youngest age at dissection (89%)

Should there be an upper age limit for offering genetic testing to the patient with a thoracic aortic disease?

No (79%)

Yes (21%)

Which upper age limit should be considered?

Mean (SD)

72.9 (10.88)

Which psychological tests should be used to monitor the impact of the screening programme? (Depression)

HADS (30%)

WHO WMH-CIDI (30%)

Which psychological tests should be used to monitor the impact of the screening programme? (Anxiety)

HAM-A (44.4%)

Trial design

What would be the optimal trial design to use to assess the value of a screening programme for TADs?

Cluster (50%)

Stepped wedge (22%)

Individual randomisation (28%)

How many centres should be involved?

More than 7 (60%)

How long do you think it would take to change what is currently done for screening?

More than 2 years (57%)

2 years (21%)

What tool should be used to measure quality of life?

EQ-5D (47%)

SF-36 (13%)

What are the most appropriate measures of effectiveness?

New diagnosed disease (70%)

Long-term mortality (73%)

Which clinical events should be evaluated in this research?

Perioperative mortality (94%)

AMI and stroke (83%)

Length of stay (67%)

AKI (61%)

When should relatives involved in the test be monitored for signs of depression and anxiety?

12 months (52%)

12 months (52%)

  1. MRI magnetic resonance imaging, CT computed tomography, FDR first-degree relatives, SDR second-degree relatives, TDR third-degree relatives, HADS Hospital Anxiety and Depression Scale, WHO WMH-CIDI World Health Organization World Mental Health Composite International Diagnostic Interview, HAM-A Hamilton Anxiety Rating Scale, EQ-5D Euro QoL 5 dimensions, SF-36 Short Form 36, AMI acute myocardial infarction, AKI acute kidney injury