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CompletedNCT01595958CYRUSUpdated Aug 28, 2025

Cyclosporine A in Cardiac Arrest

A Phase 3 interventional study of Cyclosporine A and cardio-pulmonary resuscitation in Non Shockable Out of Hospital Cardiac Arrest, sponsored by Hospices Civils de Lyon. Completed at 1 site in France. Open to participants aged 18 Years to 80 Years. Per ClinicalTrials.gov, last updated 2025-08-28.

Sponsored by Hospices Civils de Lyon · Phase 3, Interventional, and Treatment

Phase
Phase 3
Study type
Interventional
Enrollment
796
Allocation
Randomized
Ages
18 Years to 80 Years
Sex
All
01

Study summary

The investigators hypothesised that cyclosporine A administration at the onset of cardiopulmonary resuscitation, by inhibiting the mitochondrial permeability transition pore, could prevent the post cardiac arrest syndrome and improve outcomes.

02

Conditions studied

  • Non Shockable Out of Hospital Cardiac Arrest

Keywords

  • Cardiac arrest
  • heart arrest
  • cyclosporine A
  • post cardiac arrest syndrome
  • protective agent
  • multiple organ failure
  • mitochondrial permeability transition pore
  • mitochondria
  • cardio-pulmonary resuscitation
  • cardioprotection
  • ischemia reperfusion
  • postconditioning
03

In context

Heart Arrest

966 studies on the registry are indexed under Heart Arrest; 227 are open to participants now.

This study's enrollment of 796 is above the median of 100 across 557 interventional studies indexed under Heart Arrest.

Browse Heart Arrest studies →

Lead sponsor

Hospices Civils de Lyon is the lead sponsor of 1,826 studies on the registry; 439 are open to participants now.

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

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Who can participate

Ages eligible
18 Years to 80 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Witnessed out-of-hospital cardiac arrest
  • Non shockable cardiac rhythm

Exclusion criteria

Exclusion Criteria:

  • Evidence of trauma
  • Evidence of pregnancy
  • Duration of no flow more than 30 minutes
  • Rapidly fatal underlying disease
  • Allergy to cyclosporin A
05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Outcomes assessor)
Enrollment
796 participants (actual)

Study arms

  • Experimental
    Cyclosporine A

    Single intravenous bolus of cyclosporine A (2.5 mg/kg) at the onset of resuscitation

    Drug: Cyclosporine A · Procedure: cardio-pulmonary resuscitation

  • Active comparator
    Control

    usual care of cardiac arrest

    Procedure: cardio-pulmonary resuscitation

Interventions

  • DrugCyclosporine A

    Single intravenous bolus of cyclosporine A (2.5 mg/kg) at the onset of resuscitation

  • Procedurecardio-pulmonary resuscitation

    usual care of cardiac arrest

06

What researchers measure

Primary outcomes

  1. Sequential Organ Failure Assessment score (SOFA)

    Time frame: At 24 hours after hospital admission

Secondary outcomes

  1. Hospital admission with return of spontaneous circulation

    Time frame: At 24 hours following admission, at day 28, at hospital discharge (an average time frame of 7 days)

  2. Survival

    Time frame: At 24 hours following admission, at day 28, and at hospital discharge (an average time frame of 7 days)

  3. Good cerebral outcome

    Glasgow Coma Scale and Cerebral Performance Categories

    Time frame: At 24 hours following admission, at day 28, and at hospital discharge (an average time frame of 7 days)

  4. All adverse events

    Time frame: until hospital discharge (an average time frame of 7 days)

07

Study locations

1 site
  • Medical intensive care unit, Edouard Herriot Hospital
    Lyon, 69003, France
08

References and documents

Publications

  • Argaud L, Cour M, Dubien PY, Giraud F, Jossan C, Riche B, Hernu R, Darmon M, Poncelin Y, Tchenio X, Quenot JP, Freysz M, Kamga C, Beuret P, Usseglio P, Badet M, Anette B, Chaulier K, Alasan E, Sadoune S, Bobbia X, Zeni F, Gueugniaud PY, Robert D, Roy P, Ovize M; CYRUS Study Group. Effect of Cyclosporine in Nonshockable Out-of-Hospital Cardiac Arrest: The CYRUS Randomized Clinical Trial. JAMA Cardiol. 2016 Aug 1;1(5):557-65. doi: 10.1001/jamacardio.2016.1701. PubMed 27433815 ↗
  • Madelaine T, Cour M, Roy P, Vivien B, Charpentier J, Dumas F, Deye N, Bonnefoy E, Gueugniaud PY, Coste J, Cariou A, Argaud L. Prediction of Brain Death After Out-of-Hospital Cardiac Arrest: Development and Validation of the Brain Death After Cardiac Arrest Score. Chest. 2021 Jul;160(1):139-147. doi: 10.1016/j.chest.2021.01.056. Epub 2021 Jun 8. PubMed 34116828 ↗
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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 28, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT01595958
Lead sponsor
Hospices Civils de Lyon
Responsible party
Sponsor
First posted
May 10, 2012
Start date
Jun 2010
Primary completion
Mar 2013
Completion
Mar 2013
Last update
Aug 28, 2025

Study contacts

Laurent ARGAUD, MD, PhD
principal investigator · Groupement Hospitalier Edouard Herriot,69437 Lyon Cedex 03

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Aug 2025. You cannot join it, but the record below documents what was studied.

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