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Atrial FibrillationNCT02752737

Cryo Global Registry

An observational study of Atrial Fibrillation, run by Medtronic Cardiac Ablation Solutions at 163 sites in 38 countries.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
Search all trials

Trial summary

Cryo Global Registry a prospective, global, multi-center, observational Post-Market Registry Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Atrial Fibrillation
How many people
5,385 participants
Where
163 sitesin 38 countries
Study dates
2 May 2016to 29 Nov 2024
How long will I take part?
12 Months
Phase
Observational
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Study population: Subjects 18 years or older with a planned procedure using commercially available Arctic Front™ Cardiac Cryoablation Catheter.

Who may be able to join

  • Subject is ≥ 18 years of age or minimum age as required by local regulations
  • Planned procedure using commercially available Arctic Front™ Cardiac Cryoablation Catheter
  • Willing to comply with study requirements and give informed consent (defined as legally effective, documented confirmation of a subject's voluntary agreement to participate in this clinical study) or authorization per institution and geographical requirements

Who cannot join

  • Subject is enrolled in a concurrent study that has not been approved for concurrent enrollment by the global study manager
  • Subject with exclusion criteria required by local law

Trial locations and contacts

163 sites in 38 countries.

163 sites in 38 countries

Japan61 sites

  • Hyogo Prefectural Amagasaki General Medical Center

    Amagasaki

  • Kansai Rosai Hospital

    Amagasaki

  • Anjo Kosei Hospital

    Anjo

  • Tokyo Medical and Dental University, Medical Hospital

    Bunkyō City, 113-8519

  • Nippon Medical School Hospital

    Bunkyō City

  • Tokyo University Hospital

    Bunkyo-Ku, Tokyo, 113-8655

  • Chiba University Hospital

    Chiba

  • Sakakibara Heart Institute

    Fuchū, Tokyo, 183-0003

  • Fukuoka Sanno Hospital

    Fukuoka, Fukuoka, 814-0001

  • Tokai University Hachioji Hospital

    Hachiōji

  • Saitama Medical University International Medical Center

    Hidaka

  • Hirosaki University Hospital

    Hirosaki, 036-8563

  • Hiroshima City Hospital

    Hiroshima, Hiroshima, 730-8518

  • Hiroshima Prefectural Hospital

    Hiroshima, Hiroshima, 734-8530

  • Hiroshima University Hospital

    Hiroshima, Hiroshima, 734-8551

  • Hiroshima City Hospital

    Hiroshima

  • Tokai University Hospital

    Isehara, Kanagawa, 259-1193

  • Kanazawa University Hospital

    Ishikawa

  • Nihon University Itabashi Hospital

    Itabashi-ku

  • National Hospital Organization Kagoshima MC

    Kagoshima

  • Shonan Kamakura General Hospital

    Kamakura, Kanagawa, 247-8533

  • Kokura Kinen Hospital

    Kitakyushu, 802-8555

  • Kobe City Medical Center General Hospital

    Kobe, 650-0047

  • Dokkyo Medical University Saitama Medical Center

    Koshigaya

  • Saiseikai Kumamoto Hospital

    Kumamoto

  • Kyoto University Hospital

    Kyoto, 606-8507

  • The Jikei University School of Medicine Hospital

    Minatoku

  • Kyorin University Hospital

    Mitaka

  • Mie Heart Center

    Miwa

  • Miyazaki Medical Association Hospital

    Miyazaki, Miyazaki, 880-0834

  • Nagoya University Hospital

    Nagoya, Aichi-ken, 466-8560

  • Japanese Red Cross Nagoya Daini Hospital

    Nagoya, Aichi-ken, 466-8650

  • Nagoya City University East Medical Center

    Nagoya

  • Kochi Medical School Hospital

    Nankoku

  • Ogaki Municipal Hospital

    Ōgaki, Gifu, 503-8502

  • Kurashiki Central Hospital

    Okayama

  • Sakurabashi Watanabe Hospital

    Osaka, Osaka, 530-0001

  • Kindai University Hospital

    Ōsaka-sayama, 589-8511

  • Toho University Omori Medical Center

    Ōta-ku

  • Kitasato University Hospital

    Sagamihara

  • Japanese Red Cross Saitama Hospital

    Saitama, 330-8553

  • Osaka Rosai Hospital

    Sakai, Osaka, 591-8025

  • Hokkaido Ohno Memorial Hospital

    Sapporo, Hokkaido, 063-0052

  • Caress Sapporo Hokko Memorial Hospital

    Sapporo, Hokkaido, 065-0027

  • Sendai City Hospital

    Sendai

  • Jichi Medical University Hospital

    Shimotsuke-shi

  • National Cerebral and Cardiovascular Center

    Suita

  • Osaka General Medical Center

    Sumiyoshi-ku, Osaka, 558-8558

  • Tenri Hospital

    Tenri

  • Showa University Toyosu Hospital

    Tokyo, 135-8577

  • Tokyo Medical Center

    Tokyo

  • Tokyo Metropolitan Hiroo Hospital

    Tokyo

  • Toyama Prefectural Central Hospital

    Toyama

  • Fujita Health University Hospital

    Toyoake

  • Tsuchiura Kyodo General Hospital

    Tsuchiura, Ibaraki, 300-0028

  • University of Tsukuba Hospital

    Tsukuba

  • Japanese Red Cross Wakayama Medical Center

    Wakayama, Kansai, 640-8558

  • Yamagata University Hospital

    Yamagata, 990-9585

  • Yokkaichi Municipal Hospital

    Yokkaichi

  • Yokohama City Minato Red Cross Hospital

    Yokohama, 231-8682

  • University of Fukui Hospital

    Yoshida

Other trials in Japan

Germany13 sites

  • Herz- und Gefässzentrum Bad Bevensen

    Bad Bevensen, 29549

  • Segeberger Kliniken GmbH - Herzzentrum

    Bad Segeberg, 23795

  • Sana Klinikum Lichtenberg

    Berlin, 10365

  • Städtische Kliniken Bielefeld

    Bielefeld, 33604

  • Klinikum Coburg GmbH

    Coburg, 69450

  • St. Vinzenz-Hospital Köln

    Cologne, 50733

  • Cardioangiologisches Centrum Bethanien

    Frankfurt, 60389

  • Märkische Gesundheitsholding GmbH & Co. KG - Klinikum Lüdenscheid

    Lüdenscheid, North Rhine-Westphalia, 58515

  • Klinikum Lüdenscheid

    Lüdenscheid, 58515

  • Kliniken Maria Hilf GmbH Mönchengladbach - Krankenhaus St. Franziskus

    Mönchengladbach, 41063

  • Städtische Kliniken München GmbH - Klinikum Bogenhausen

    München

  • Oberschwaben-Klinik GmbH - Krankenhaus St. Elisabeth

    Ravensburg, 88212

  • St. Josephs Hospital Wiesbaden

    Wiesbaden, 65189

Other trials in Germany

United States6 sites

  • Texas Cardiac Arrhythmia Research Foundation

    Austin, Texas, 78705-1852

  • The Lindner Research Center

    Cincinnati, Ohio, 45219

  • Texas Health Research & Education Institute

    Dallas, Texas, 75231

  • Doylestown Health Cardiology

    Doylestown, Pennsylvania, 18901

  • Spectrum Health Hospitals

    Grand Rapids, Michigan, 49503-2560

  • Carle Foundation Hospital

    Urbana, Illinois, 61801

Other trials in United States

China6 sites

  • Fuwai Hospital Chinese Academy of Medical Sciences and Peking Union Medical College

    Beijing, 100037

  • West China Hospital of Sichuan University

    Chengdu, 610041

  • Shanghai Tenth People's Hospital

    Shanghai, 200072

  • Ruijin Hospital Shanghai Jiao Tong University School of Medicine

    Shanghai

  • Tianjin Chest Hospital

    Tianjin, 300051

  • The First Affiliated Hospital of Zhengzhou University

    Zhengzhou, Henan, 450052

Other trials in China

India6 sites

  • Apollo Hospital (Chennai)

    Chennai, Tamil Nadu, 600006

  • Aig Hospital

    Hyderabad

  • Eternal Hospital

    Jaipur, Rajasthan, 302017

  • Aster Medcity

    Kochi, Kerala, 682027

  • Max Super Speciality Hospital

    New Delhi, 110017

  • Sree Chitra Tirunal Institute for Medical Sciences & Technology

    Thiruvananthapuram, Kerala, 695011

Other trials in India

United Kingdom5 sites

  • Liverpool Heart and Chest Hospital NHS Foundation Trust

    Liverpool, L14 3PE

  • St George's University Hospitals - NHS Trust

    London, SW17 0QT

  • St. George's Hospital-NHS Trust

    London, SW17 0QT

  • St. Bartholomew's Hospital

    London

  • The Newcastle upon Tyne Hospitals NHS Foundation Trust - Freeman Hospital

    Newcastle upon Tyne, United Kingdom, NE7 7DN

Other trials in United Kingdom

Italy4 sites

  • Humanitas Mater Domini

    Castellanza, 21053

  • Fondazione IRCCS Policlinico San

    Pavia

  • Ospedale S. Maria della Misericordia

    Perugia, 06129

  • Azienda Ospedaliero-Universitaria Pisana - Stabilimento di Cisanello

    Pisa, 56100

Other trials in Italy

Malaysia4 sites

  • Cardiac Vascular Sentral Kuala Lumpur (CVSKL)

    Kuala Lumpur, Malaysia, 50470

  • Institut Jantung Negara

    Kuala Lumpur, 50400

  • Sarawak Heart Centre

    Kuching, Sarawak, 94300

  • Hospital Serdang

    Sepang, Selangor, 43000

Other trials in Malaysia

Poland4 sites

  • Krakowski Szpital Specjalistyczny im. Jana Pawla II

    Krakow

  • Centralny Szpital Kliniczny Uniwersytetu Medycznego w Łodzi

    Lodz

  • Spital Wojewodzki nr 2

    Rzeszów, Poland, 35-301

  • Kliniczny Szpital Wojewódzki Nr 2 im. Św. Jadwigi Królowej w Rzeszowie

    Rzeszów

Other trials in Poland

Taiwan4 sites

  • Taichung Veterans General Hospital

    Taichung, Taiwan, 40705

  • Mackay Memorial Hospital

    Taipei, Taiwan, 10491

  • Cheng-Hsin General Hospital

    Taipei, Taiwan, 112

  • Taipei Veterans General Hospital

    Taipei

Other trials in Taiwan

Argentina3 sites

  • Instituto Cardiovascular de Buenos Aires (ICBA)

    Buenos Aires, C1428DCO

  • Institituo Cardiovascular Buenos Aires (ICBA)

    Buenos Aires, CP:1428

  • Hospital Universitario Fundación Favaloro

    Buenos Aires

Other trials in Argentina

Mexico3 sites

  • Hospital Angeles Lomas

    Huixquilucan, State of Mexico, 52763

  • Hospital San Angel Inn Universidad

    México, 03330

  • Centro Médico Nacional Siglo XXI

    Mexico City, 06720

Other trials in Mexico

Russia3 sites

  • Russian Scientific Center of Surgery by B.V. Petrovskiy, RAMN

    Moscow

  • Tomsk National Research Medical Center of the Russian Academy of Sciences

    Tomsk

  • State Budgetary Healthcare Institution of Sverdlovsk region for "Sverdlovsk Regional Clinical Hospital #1"

    Yekaterinburg, 620102

Other trials in Russia

Singapore3 sites

  • National University Hospital

    Singapore, 119074

  • National Heart Centre Singapore

    Singapore, 169609

  • National University Hospital

    Singapore

Other trials in Singapore

Slovakia3 sites

  • Stredoslovensky Ustav Srdcovych a Cievnych Chorob a.s

    Banská Bystrica, 97401

  • Narodny ustav srdcovych a cievnych chorob, a.s. (NUSCH)

    Bratislava, 83348

  • Vychodoslovensky ustav srdcovych a cievnych chorob, a.s.

    Košice, 04011

Other trials in Slovakia

South Korea3 sites

  • Seoul National University Bundang Hospital

    Seoul, Gyeonggi-do, 463-707

  • Hallym University Sacred Heart Hospital

    Seoul, 152-703

  • Samsung Medical Center

    Seoul

Other trials in South Korea

Thailand3 sites

  • Siriraj Hospital

    Bangkok, Thailand, 10700

  • Phramongkutklao Hospital

    Bangkok

  • Ramathibodi Hospital

    Bangkok

Other trials in Thailand

Belgium2 sites

  • Onze-Lieve-Vrouwziekenhuis-Campus Aalst

    Aalst

  • Centre Hospitalier Régional de la Citadelle

    Liège, Liege, 4000

Other trials in Belgium

Colombia2 sites

  • Fundacion Clinica Shaio

    Bogotá

  • Clinica Ces

    Medellín

Other trials in Colombia

Hungary2 sites

  • Gottsegen György Országos Kardiológiai Intézet

    Budapest

  • Debreceni Egyetem

    Debrecen

Other trials in Hungary

Indonesia2 sites

  • National Cardiovascular Center Harapan Kita

    Jakarta, 11420

  • National Cardiovascular Center Harapan Kita

    Jakarta

Other trials in Indonesia

Kuwait2 sites

  • Salman Al Abdallah Al Dabbous Cardiac Center (DCC) - Al Adan Hospital

    Al Ahmadi

  • Chest Diseases Hospital

    Kuwait City

Other trials in Kuwait

Philippines2 sites

  • Saint Lukes Medical Center (SLMC)

    City of Taguig, National Capital Region, 1634

  • The Medical City

    Pasig, National Capital Region, 1603

Other trials in Philippines

South Africa2 sites

  • Netcare Sunninghill Hospital

    Johannesburg

  • Busamed Gateway Hospital

    Umhlanga, 4319

Other trials in South Africa

United Arab Emirates2 sites

  • Cleveland Clinic Abu Dhabi

    Abu Dhabi

  • Sheikh Khalifa Medical City

    Abu Dhabi

Other trials in United Arab Emirates

Austria1 site

  • Kepler Universitätsklinikum Med Campus III.

    Linz, 4021

Other trials in Austria

Brunei1 site

  • Gleneagles Jerudong Park Medical Centre

    Bandar Seri Begawan, Brunei, BG3122

Chile1 site

  • Clínica Dávila

    Santiago

Other trials in Chile

Czechia1 site

  • Nemocnice Na Homolce

    Prague, 150 30

Other trials in Czechia

Greece1 site

  • Hellenic Airforce 251 General Hospital

    Athens, 11525

Other trials in Greece

Iceland1 site

  • Landspitali - National Hospital of Iceland

    Reykjavik, Iceland, 108

Other trials in Iceland

Kazakhstan1 site

  • National Research Cardiac Surgery Center

    Astana

Other trials in Kazakhstan

Oman1 site

  • The Royal Hospital

    Muscat

Other trials in Oman

Portugal1 site

  • Centro hospitalar Vila Nova de Gaia/Espinho-Unidade I

    Vila Nova de Gaia, 4434-502

Other trials in Portugal

Saudi Arabia1 site

  • King Fahad Medical City (KFMC)

    Riyadh, 11433

Other trials in Saudi Arabia

Serbia1 site

  • Institute for Cardiovascular Disease (ICVD) Dedinje

    Belgrade, Serbia, 11040

Other trials in Serbia

Spain1 site

  • Hospital Universitario Moncloa

    Madrid, 28008

Other trials in Spain

Switzerland1 site

  • Centre Hospitalier Universitaire Vaudois

    Lausanne

Other trials in Switzerland

About this study

Official title: Cryo Global Registry, a Part of the Medtronic Cardiac Ablation Post-Market Study Platform

Cryo Global Registry a prospective, global, multi-center, observational Post-Market Registry

Read the detailed description

The Cryo Global Registry is a prospective, global, multi-center, observational post-market registry (PMR). The purpose of this study is to evaluate and describe clinical performance and safety data in a broad patient population treated with a commercially available Arctic Front™ Family of Cardiac Cryoablation Catheters (hereafter referred to as "Arctic Front™ Cardiac Cryoablation Catheter System"). The cryoballoon ablation(CBA) procedure will be performed according to routine hospital practice. The study is expected to have a 24 month enrollment period. The follow up period is intended to align with standard practice and subjects will be followed for a minimum of 12 months post-procedure.

Medical subject headings
Atrial Fibrillation

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Freedom from Atrial Fibrillation (AF) Recurrence at 12 Months

    Estimate the 12 month freedom from AF recurrence using the Arctic Front™ Cardiac Cryoablation Catheter System

    Measured: 12 Months

  2. Freedom from Atrial Arrhythmia at 12 Months

    Estimate the 12 month freedom from AF / Atrial Flutter (AFL)/ Atrial Tachycardia (AT) using the Arctic Front™ Cardiac Cryoablation Catheter System.

    Measured: 12 Months

  3. Freedom from Arrythmias at 12 months

    Estimate the 12-month freedom from arrythmias treated using the Freezor™ Family of Cardiac Cryoablation Catheters.

    Measured: 12 Months

  4. Freedom from Device / Procedure Related Adverse Events

    Estimate device and procedure-related adverse events for cryoablation using the Arctic Front™ Cardiac Cryoablation Catheter System through 12 months.

    Measured: 12 Months

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted27 Apr 2016 (estimated)
  2. Study start2 May 2016
  3. Primary completion29 Nov 2024
  4. Study completion29 Nov 2024

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Cohort
Time perspective
Prospective
Enrolment
5,385 participants (actual)
Target duration
12 Months
IDs, dates and publications
ClinicalTrials.gov ID
NCT02752737
Sponsor's protocol ID
Cryo Global Registry
Status last verified
Feb 2025
First submitted
25 Apr 2016
Last updated
30 Jul 2025
Results posted
No
Data monitoring committee
No
Individual data sharing
No

Publications

  • Fukunaga H, Murakami M, Yoshida Y, Inaba O, Miura F, Yamauchi Y, Shizuta S, Yagishita A, Kumagai K, Nakahara S, Egami Y, Sawhney N, Obidigbo V, Ando K, Nitta J; Cryo Global Registry. Cryoballoon Ablation for Persistent Atrial Fibrillation in Japan: Cryo Global Registry 12-Months Results. J Arrhythm. 2026 Feb 19;42(1):e70291. doi: 10.1002/joa3.70291. eCollection 2026 Feb.

    PubMed 41727702

  • Abdrakhmanov A, Nuralinov O, Rashbayeva G, Tursunbekov A, Bagibayev S, Bakytzhanuly A, Yessilbayev Z, Chinybayeva A, Abdrakhmanova Z, Salustri A, Suleymen Z, Kirkimbayeva R. Cryoballoon ablation for the treatment of atrial fibrillation in Kazakhstan: One year outcome from the Cryo Global Registry. Indian Pacing Electrophysiol J. 2025 Sep-Oct;25(5):294-301. doi: 10.1016/j.ipej.2025.06.008. Epub 2025 Jun 20.

    PubMed 40545038

  • Khelae SK, Chun KRJ, Drephal C, Scazzuso F, Kueffer FJ, van Bragt KA, Lawrenz T, Todd D, Ptaszynski P, Foldesi C. Real-world sex differences in healthcare utilization after cryoballoon ablation: 2-year outcomes from the Cryo Global Registry. Front Cardiovasc Med. 2025 Jun 3;12:1549002. doi: 10.3389/fcvm.2025.1549002. eCollection 2025.

    PubMed 40529551

  • Lawin D, Stellbrink C, Chun KJ, Li CH, van Bragt KA, Kueffer F, Selma JM, Oh IY, Herzet JM, Nitta J, Chang TY, Lawrenz T. Impact of atrial fibrillation diagnosis-to-ablation time on 24-month efficacy and safety outcomes in the Cryo Global Registry. Europace. 2025 Feb 5;27(2):euaf008. doi: 10.1093/europace/euaf008.

    PubMed 39836630

  • Foldesi C, Kojic D, Sudzinova A, Kuniewicz M, Neuzil P, Csanadi Z, Skamla M, Svetlosak M, Romanek J, Holbrook R, Stefanic M, Sale A, Holmes TR, Ptaszynski P. Electrophysiology lab efficiency using cryoballoon for pulmonary vein isolation in central and eastern Europe: A sub-analysis of the cryo global registry study. Cardiol J. 2024;31(5):656-664. doi: 10.5603/cj.98292. Epub 2024 Aug 13.

    PubMed 39136617

  • Ahn H, Lim HE, On YK, Selma JM, Kueffer FJ, van Bragt KA, Obidigbo V, Oh IY. Long-term Outcome of Cryoballoon Ablation in Korean Patients With Atrial Fibrillation: Real-World Experience From the Cryo Global Registry. Korean Circ J. 2024 Oct;54(10):619-633. doi: 10.4070/kcj.2024.0044. Epub 2024 Jun 10.

    PubMed 38956935

  • Lawin D, Lawrenz T, Chun KRJ, Lim HE, Obidigbo V, Selma JM, Peytchev P, Nguyen DQ, Foldesi C, Stellbrink C; the Cryo AF Global Registry Investigators. Cryoballoon ablation of atrial fibrillation in octogenarians: one year outcomes from the cryo global registry. J Interv Card Electrophysiol. 2024 Sep;67(6):1341-1351. doi: 10.1007/s10840-023-01680-z. Epub 2023 Dec 12.

    PubMed 38082096

  • Scazzuso F, Ptaszynski P, Kaczmarek K, Chun KRJ, Khelae SK, Foldesi C, Obidigbo V, van Bragt KA, On YK, Al-Kandari F, Okumura K; Cryo Global Registry Investigators. Regional variations in patient selection and procedural characteristics for cryoballoon ablation of atrial fibrillation in the cryo global registry. J Interv Card Electrophysiol. 2024 Apr;67(3):493-501. doi: 10.1007/s10840-023-01582-0. Epub 2023 Jul 28.

    PubMed 37505337

  • Zucchelli G, Chun KRJ, Khelae SK, Foldesi C, Kueffer FJ, van Bragt KA, Scazzuso F, On YK, Al-Kandari F, Okumura K; Cryo Global Registry Investigators. Impact of first-line cryoablation for atrial fibrillation on healthcare utilization, arrhythmia disease burden and efficacy outcomes: real-world evidence from the Cryo Global Registry. J Interv Card Electrophysiol. 2023 Apr;66(3):711-722. doi: 10.1007/s10840-022-01388-6. Epub 2022 Nov 4.

    PubMed 36331681

  • Lim HE, Oh IY, Kueffer FJ, van Bragt KA, On YK. Cryoballoon Catheter Ablation in Korean Patients With Paroxysmal and Persistent Atrial Fibrillation: One Year Outcome From the Cryo Global Registry. Korean Circ J. 2022 Oct;52(10):755-767. doi: 10.4070/kcj.2022.0127. Epub 2022 Aug 12.

    PubMed 36097833

  • Rordorf R, Scazzuso F, Chun KRJ, Khelae SK, Kueffer FJ, Braegelmann KM, Okumura K, Al-Kandari F, On YK, Foldesi C; Cryo AF Global Registry Investigators. Cryoballoon Ablation for the Treatment of Atrial Fibrillation in Patients With Concomitant Heart Failure and Either Reduced or Preserved Left Ventricular Ejection Fraction: Results From the Cryo AF Global Registry. J Am Heart Assoc. 2021 Dec 21;10(24):e021323. doi: 10.1161/JAHA.121.021323. Epub 2021 Dec 10.

    PubMed 34889108

Questions about this trial

What is this clinical trial studying?

An observational study of Atrial Fibrillation, run by Medtronic Cardiac Ablation Solutions at 163 sites in 38 countries.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 3 inclusion and 2 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 30 Jul 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 163 sites in Japan, Germany, United States, China, India and 33 more countries. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Freedom from Atrial Fibrillation (AF) Recurrence at 12 Months (time frame: 12 Months). The study lists 4 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT02752737, which also lists 11 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 30 Jul 2025.

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Cryo Global Registry (NCT02752737) | AzTrials