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RecruitingNCT01429727SCADUpdated Jan 23, 2026

The "Virtual" Multicenter Spontaneous Coronary Artery Dissection (SCAD) Registry

An observational study in Spontaneous Coronary Artery Dissection and SCAD, sponsored by Mayo Clinic. Recruiting at 1 site in United States. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-01-23.

Sponsored by Mayo Clinic · Observational

Study type
Observational
Model
Cohort
Time perspective
Other
Enrollment
2,500
Ages
18 Years and older
Sex
All
01

Study summary

The primary goal of this project is to describe the clinical and physiologic characteristics of Spontaneous Coronary Artery Dissections (SCAD) in order to increase awareness, understanding, treatment and prevention of a potentially fatal cardiovascular event.

This study will be a retrospective and prospective review of medical course and current health of men and women with SCAD.

Read the detailed description

Spontaneous Coronary Artery Dissection (SCAD) is a relatively rare and poorly understood condition that has been reported to affect more women than men. The coronary arteries consist of three layers, and dissection occurs when two of these layers separate, enabling blood to flow into the space between the layers. As the blood accumulates, this can cause obstruction to normal blood flow within the heart, leading to chest pain, heart attack and even sudden death.

The medical community has much to learn about treatment and prevention of this potentially fatal cardiovascular event. Mayo Clinic is conducting two studies of SCAD. This study consists of building a database/registry of patients with SCAD (whether they have been patients at Mayo Clinic or not) to identify patterns of SCAD incidence, causes and associations that could guide future research. With participant consent, Mayo Clinic staff will request a copy of the original coronary angiogram when SCAD was diagnosed to confirm the diagnosis and determine eligibility. If eligible, study coordinators will contact the participant to provide more information about the studies and request a signed informed consent document.

02

Conditions studied

  • Spontaneous Coronary Artery Dissection
  • SCAD

Keywords

  • Spontaneous coronary artery dissection
  • SCAD
  • coronary artery disease
  • myocardial infarction
  • coronary dissection
03

In context

Coronary Artery Disease

5,598 studies on the registry are indexed under Coronary Artery Disease; 957 are open to participants now.

This study's planned enrollment of 2,500 is above the median of 336 across 1,947 observational studies indexed under Coronary Artery Disease.

Browse Coronary Artery Disease studies →

Lead sponsor

Mayo Clinic is the lead sponsor of 3,218 studies on the registry; 670 are open to participants now.

Of its 445 completed or terminated interventional studies of FDA-regulated products, 313 (70%) have results posted.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes
Sampling method
Non-probability sample

Study population

Men and women with spontaneous coronary artery dissection (SCAD) as confirmed on angiogram.

Eligibility criteria

Inclusion Criteria:

  • Individuals who have been cared for at Mayo Clinic with a diagnosis of SCAD
  • SCAD in women who are pregnant or within 12 months postpartum at the time of SCAD
  • SCAD in individuals who self-identify as a member of a racial or ethnic group that is currently underrepresented in the registry. This would include anyone who identifies as: Black/African American, Asian, American Indian or Alaska Native, Native Hawaiian or Other Pacific Islander, and any race with Hispanic ethnicity
  • SCAD in a man
  • SCAD in persons younger than 30 years of age
  • SCAD within the past 2 weeks (acute)
  • SCAD patient enrolling into any other Mayo Clinic SCAD Research Study
  • SCAD in individuals who have a relative that has had a SCAD event

Persons with history of SCAD who are interested in participating in the study but do not meet the updated inclusion criteria will not be enrolled at this time. However, they will be given the option to share their contact information in order to be invited to future Mayo Clinic SCAD studies.

05

Study design

Observational model
Cohort
Time perspective
Other
Enrollment
2,500 participants (estimated)

Groups and cohorts

  • SCAD Registry

    Individuals who have experienced at least one episode of spontaneous coronary artery dissection.

06

What researchers measure

Primary outcomes

  1. Descriptive Data

    Obtain data regarding SCAD related risk factors, presenting characteristics, treatments and long term outcomes.

    Time frame: Continuous time frame following index event for 2-10 years from study contact date.

Secondary outcomes

  1. Physical Health Update

    Record update on patient's current physical health and any relevant health events that may have occurred since the initial SCAD event.

    Time frame: Continuous time frame following index event for 2-10 years from study contact date.

  2. Mental Health Update

    Record update on patient's current mental health status since the initial SCAD event.

    Time frame: Continuous time frame following index event for 2-10 years from study contact date.

07

Study locations

1 of 1 sites recruiting
  • Mayo Clinic
    Rochester, Minnesota 55905, United States
    • Susan Milbrandt · Contact · mayoscad@mayo.edu · 507-266-3180
    • Marysia S Tweet, M.D., M.S. · Principal investigator
    Recruiting
08

References and documents

Publications

  • Tweet MS, Gulati R, Aase LA, Hayes SN. Spontaneous coronary artery dissection: a disease-specific, social networking community-initiated study. Mayo Clin Proc. 2011 Sep;86(9):845-50. doi: 10.4065/mcp.2011.0312. PubMed 21878595 ↗
  • Tweet MS, Hayes SN, Pitta SR, Simari RD, Lerman A, Lennon RJ, Gersh BJ, Khambatta S, Best PJ, Rihal CS, Gulati R. Clinical features, management, and prognosis of spontaneous coronary artery dissection. Circulation. 2012 Jul 31;126(5):579-88. doi: 10.1161/CIRCULATIONAHA.112.105718. Epub 2012 Jul 16. PubMed 22800851 ↗
  • Tweet MS, Gulati R, Williamson EE, Vrtiska TJ, Hayes SN. Multimodality Imaging for Spontaneous Coronary Artery Dissection in Women. JACC Cardiovasc Imaging. 2016 Apr;9(4):436-50. doi: 10.1016/j.jcmg.2016.01.009. PubMed 27056163 ↗
  • Krittanawong C, Tweet MS, Hayes SE, Bowman MJ, Gulati R, Squires RW, Hayes SN. Usefulness of Cardiac Rehabilitation After Spontaneous Coronary Artery Dissection. Am J Cardiol. 2016 May 15;117(10):1604-1609. doi: 10.1016/j.amjcard.2016.02.034. Epub 2016 Mar 2. PubMed 27055757 ↗
  • Henkin S, Negrotto SM, Tweet MS, Kirmani S, Deyle DR, Gulati R, Olson TM, Hayes SN. Spontaneous coronary artery dissection and its association with heritable connective tissue disorders. Heart. 2016 Jun 1;102(11):876-81. doi: 10.1136/heartjnl-2015-308645. Epub 2016 Feb 10. PubMed 26864667 ↗
  • Tweet MS, Gulati R, Hayes SN. What Clinicians Should Know Alphabout Spontaneous Coronary Artery Dissection. Mayo Clin Proc. 2015 Aug;90(8):1125-30. doi: 10.1016/j.mayocp.2015.05.010. PubMed 26250728 ↗
  • Prasad M, Tweet MS, Hayes SN, Leng S, Liang JJ, Eleid MF, Gulati R, Vrtiska TJ. Prevalence of extracoronary vascular abnormalities and fibromuscular dysplasia in patients with spontaneous coronary artery dissection. Am J Cardiol. 2015 Jun 15;115(12):1672-7. doi: 10.1016/j.amjcard.2015.03.011. Epub 2015 Mar 23. PubMed 25929580 ↗
  • Tweet MS, Hayes SN, Gulati R, Rose CH, Best PJ. Pregnancy after spontaneous coronary artery dissection: a case series. Ann Intern Med. 2015 Apr 21;162(8):598-600. doi: 10.7326/L14-0446. No abstract available. PubMed 25894037 ↗
  • Goel K, Tweet M, Olson TM, Maleszewski JJ, Gulati R, Hayes SN. Familial spontaneous coronary artery dissection: evidence for genetic susceptibility. JAMA Intern Med. 2015 May;175(5):821-6. doi: 10.1001/jamainternmed.2014.8307. PubMed 25798899 ↗
  • Silber TC, Tweet MS, Bowman MJ, Hayes SN, Squires RW. Cardiac rehabilitation after spontaneous coronary artery dissection. J Cardiopulm Rehabil Prev. 2015 Sep-Oct;35(5):328-33. doi: 10.1097/HCR.0000000000000111. PubMed 25730096 ↗
  • Eleid MF, Guddeti RR, Tweet MS, Lerman A, Singh M, Best PJ, Vrtiska TJ, Prasad M, Rihal CS, Hayes SN, Gulati R. Coronary artery tortuosity in spontaneous coronary artery dissection: angiographic characteristics and clinical implications. Circ Cardiovasc Interv. 2014 Oct;7(5):656-62. doi: 10.1161/CIRCINTERVENTIONS.114.001676. Epub 2014 Aug 19. PubMed 25138034 ↗
  • Hayes SN. Spontaneous coronary artery dissection (SCAD): new insights into this not-so-rare condition. Tex Heart Inst J. 2014 Jun 1;41(3):295-8. doi: 10.14503/THIJ-14-4089. eCollection 2014 Jun. No abstract available. PubMed 24955045 ↗
  • Liang JJ, Prasad M, Tweet MS, Hayes SN, Gulati R, Breen JF, Leng S, Vrtiska TJ. A novel application of CT angiography to detect extracoronary vascular abnormalities in patients with spontaneous coronary artery dissection. J Cardiovasc Comput Tomogr. 2014 May-Jun;8(3):189-97. doi: 10.1016/j.jcct.2014.02.001. Epub 2014 Apr 4. PubMed 24939067 ↗
  • Tweet MS, Gulati R, Hayes SN. Spontaneous Coronary Artery Dissection. Curr Cardiol Rep. 2016 Jul;18(7):60. doi: 10.1007/s11886-016-0737-6. PubMed 27216840 ↗
  • Lindor RA, Tweet MS, Goyal KA, Lohse CM, Gulati R, Hayes SN, Sadosty AT. Emergency Department Presentation of Patients with Spontaneous Coronary Artery Dissection. J Emerg Med. 2017 Mar;52(3):286-291. doi: 10.1016/j.jemermed.2016.09.005. Epub 2016 Oct 8. PubMed 27727035 ↗
  • Codsi E, Tweet MS, Rose CH, Arendt KW, Best PJM, Hayes SN. Spontaneous Coronary Artery Dissection in Pregnancy: What Every Obstetrician Should Know. Obstet Gynecol. 2016 Oct;128(4):731-738. doi: 10.1097/AOG.0000000000001630. PubMed 27607875 ↗
  • Eleid MF, Tweet MS, Young PM, Williamson E, Hayes SN, Gulati R. Spontaneous coronary artery dissection: challenges of coronary computed tomography angiography. Eur Heart J Acute Cardiovasc Care. 2018 Oct;7(7):609-613. doi: 10.1177/2048872616687098. Epub 2017 Jan 31. PubMed 28139136 ↗
  • Tweet MS, Codsi E, Best PJM, Gulati R, Rose CH, Hayes SN. Menstrual Chest Pain in Women With History of Spontaneous Coronary Artery Dissection. J Am Coll Cardiol. 2017 Oct 31;70(18):2308-2309. doi: 10.1016/j.jacc.2017.08.071. No abstract available. PubMed 29073960 ↗
  • Tweet MS, Hayes SN, Codsi E, Gulati R, Rose CH, Best PJM. Spontaneous Coronary Artery Dissection Associated With Pregnancy. J Am Coll Cardiol. 2017 Jul 25;70(4):426-435. doi: 10.1016/j.jacc.2017.05.055. PubMed 28728686 ↗
  • Tweet MS, Akhtar NJ, Hayes SN, Best PJ, Gulati R, Araoz PA. Spontaneous coronary artery dissection: Acute findings on coronary computed tomography angiography. Eur Heart J Acute Cardiovasc Care. 2019 Aug;8(5):467-475. doi: 10.1177/2048872617753799. Epub 2018 Jan 29. PubMed 29376398 ↗
  • Hayes SN, Kim ESH, Saw J, Adlam D, Arslanian-Engoren C, Economy KE, Ganesh SK, Gulati R, Lindsay ME, Mieres JH, Naderi S, Shah S, Thaler DE, Tweet MS, Wood MJ; American Heart Association Council on Peripheral Vascular Disease; Council on Clinical Cardiology; Council on Cardiovascular and Stroke Nursing; Council on Genomic and Precision Medicine; and Stroke Council. Spontaneous Coronary Artery Dissection: Current State of the Science: A Scientific Statement From the American Heart Association. Circulation. 2018 May 8;137(19):e523-e557. doi: 10.1161/CIR.0000000000000564. Epub 2018 Feb 22. PubMed 29472380 ↗
  • Waterbury TM, Tweet MS, Hayes SN, Prasad A, Lerman A, Gulati R. Coronary endothelial function and spontaneous coronary artery dissection. Eur Heart J Acute Cardiovasc Care. 2020 Feb;9(1):90-95. doi: 10.1177/2048872618795255. Epub 2018 Aug 20. PubMed 30124050 ↗
  • Tan NY, Hayes SN, Young PM, Gulati R, Tweet MS. Usefulness of Cardiac Magnetic Resonance Imaging in Patients With Acute Spontaneous Coronary Artery Dissection. Am J Cardiol. 2018 Nov 15;122(10):1624-1629. doi: 10.1016/j.amjcard.2018.07.043. Epub 2018 Aug 20. PubMed 30220414 ↗
  • Waterbury TM, Tweet MS, Hayes SN, Eleid MF, Bell MR, Lerman A, Singh M, Best PJM, Lewis BR, Rihal CS, Gersh BJ, Gulati R. Early Natural History of Spontaneous Coronary Artery Dissection. Circ Cardiovasc Interv. 2018 Sep;11(9):e006772. doi: 10.1161/CIRCINTERVENTIONS.118.006772. PubMed 30354594 ↗
  • Kok SN, Hayes SN, Cutrer FM, Raphael CE, Gulati R, Best PJM, Tweet MS. Prevalence and Clinical Factors of Migraine in Patients With Spontaneous Coronary Artery Dissection. J Am Heart Assoc. 2018 Dec 18;7(24):e010140. doi: 10.1161/JAHA.118.010140. PubMed 30561271 ↗
  • Adlam D, Olson TM, Combaret N, Kovacic JC, Iismaa SE, Al-Hussaini A, O'Byrne MM, Bouajila S, Georges A, Mishra K, Braund PS, d'Escamard V, Huang S, Margaritis M, Nelson CP, de Andrade M, Kadian-Dodov D, Welch CA, Mazurkiewicz S, Jeunemaitre X; DISCO Consortium; Wong CMY, Giannoulatou E, Sweeting M, Muller D, Wood A, McGrath-Cadell L, Fatkin D, Dunwoodie SL, Harvey R, Holloway C, Empana JP, Jouven X; CARDIoGRAMPlusC4D Study Group; Olin JW, Gulati R, Tweet MS, Hayes SN, Samani NJ, Graham RM, Motreff P, Bouatia-Naji N. Association of the PHACTR1/EDN1 Genetic Locus With Spontaneous Coronary Artery Dissection. J Am Coll Cardiol. 2019 Jan 8;73(1):58-66. doi: 10.1016/j.jacc.2018.09.085. PubMed 30621952 ↗
  • Turley TN, Theis JL, Sundsbak RS, Evans JM, O'Byrne MM, Gulati R, Tweet MS, Hayes SN, Olson TM. Rare Missense Variants in TLN1 Are Associated With Familial and Sporadic Spontaneous Coronary Artery Dissection. Circ Genom Precis Med. 2019 Apr;12(4):e002437. doi: 10.1161/CIRCGEN.118.002437. Epub 2019 Mar 19. PubMed 30888838 ↗
  • Johnson AK, Hayes SN, Sawchuk C, Johnson MP, Best PJ, Gulati R, Tweet MS. Analysis of Posttraumatic Stress Disorder, Depression, Anxiety, and Resiliency Within the Unique Population of Spontaneous Coronary Artery Dissection Survivors. J Am Heart Assoc. 2020 May 5;9(9):e014372. doi: 10.1161/JAHA.119.014372. Epub 2020 Apr 28. PubMed 32342736 ↗
  • Turley TN, O'Byrne MM, Kosel ML, de Andrade M, Gulati R, Hayes SN, Tweet MS, Olson TM. Identification of Susceptibility Loci for Spontaneous Coronary Artery Dissection. JAMA Cardiol. 2020 Aug 1;5(8):929-938. doi: 10.1001/jamacardio.2020.0872. PubMed 32374345 ↗
  • Hayes SN, Tweet MS, Adlam D, Kim ESH, Gulati R, Price JE, Rose CH. Spontaneous Coronary Artery Dissection: JACC State-of-the-Art Review. J Am Coll Cardiol. 2020 Aug 25;76(8):961-984. doi: 10.1016/j.jacc.2020.05.084. PubMed 32819471 ↗
  • Tweet MS, Young KA, Best PJM, Hyun M, Gulati R, Rose CH, Hayes SN. Association of Pregnancy With Recurrence of Spontaneous Coronary Artery Dissection Among Women With Prior Coronary Artery Dissection. JAMA Netw Open. 2020 Sep 1;3(9):e2018170. doi: 10.1001/jamanetworkopen.2020.18170. PubMed 32965500 ↗
  • Kronzer VL, Tarabochia AD, Lobo Romero AS, Tan NY, O'Byrne TJ, Crowson CS, Turley TN, Myasoedova E, Davis JM 3rd, Raphael CE, Gulati R, Hayes SN, Tweet MS. Lack of Association of Spontaneous Coronary Artery Dissection With Autoimmune Disease. J Am Coll Cardiol. 2020 Nov 10;76(19):2226-2234. doi: 10.1016/j.jacc.2020.09.533. PubMed 33153582 ↗
  • Benson JC, Lehman VT, Verdoorn JT, Shlapak DP, Hayes SN, Tweet MS. Prevalence of Cervical Artery Abnormalities on CTA in Patients with Spontaneous Coronary Artery Dissection: Fibromuscular Dysplasia, Dissection, Aneurysm, and Tortuosity. AJNR Am J Neuroradiol. 2021 Aug;42(8):1497-1502. doi: 10.3174/ajnr.A7151. Epub 2021 May 13. PubMed 33985951 ↗
  • Turley TN, Kosel ML, Bamlet WR, Gulati R, Hayes SN, Tweet MS, Olson TM. Susceptibility Locus for Pregnancy-Associated Spontaneous Coronary Artery Dissection. Circ Genom Precis Med. 2021 Aug;14(4):e003398. doi: 10.1161/CIRCGEN.121.003398. Epub 2021 Aug 13. No abstract available. PubMed 34384238 ↗
  • Adlam D, Tweet MS, Gulati R, Kotecha D, Rao P, Moss AJ, Hayes SN. Spontaneous Coronary Artery Dissection: Pitfalls of Angiographic Diagnosis and an Approach to Ambiguous Cases. JACC Cardiovasc Interv. 2021 Aug 23;14(16):1743-1756. doi: 10.1016/j.jcin.2021.06.027. PubMed 34412792 ↗
  • Johnson AK, Tweet MS, Rouleau SG, Sadosty AT, Hayes SN, Raukar NP. The presentation of spontaneous coronary artery dissection in the emergency department: Signs and symptoms in an unsuspecting population. Acad Emerg Med. 2022 Apr;29(4):423-428. doi: 10.1111/acem.14426. Epub 2021 Dec 26. PubMed 34897898 ↗
  • Tarabochia AD, Tan NY, Lewis BR, Slusser JP, Hayes SN, Best PJM, Gulati R, Deshmukh AJ, Tweet MS. Association of Spontaneous Coronary Artery Dissection With Atrial Arrhythmias. Am J Cardiol. 2023 Jan 1;186:203-208. doi: 10.1016/j.amjcard.2022.09.032. Epub 2022 Oct 31. PubMed 36328832 ↗
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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jan 23, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT01429727
Lead sponsor
Mayo Clinic
Responsible party
Marysia Tweet (Principal Investigator, Mayo Clinic) — Principal investigator
First posted
Sep 7, 2011
Start date
Jul 2011
Primary completion
Dec 2030 (estimated)
Completion
Dec 2030 (estimated)
Last update
Jan 23, 2026

Study contacts

Susan Milbrandt
Contact
mayoscad@mayo.edu
507-266-3180
Marysia S Tweet, M.D., M.S.
principal investigator · Mayo Clinic

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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