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CompletedNCT03600376Updated May 19, 2021Results posted

Study to Assess the Efficacy and Safety of Ryanodex as Adjuvant Treatment in Subjects With EHS

A Phase 3 interventional study of Ryanodex and Standard of Care and Standard of Care in Exertional Heat Stroke, sponsored by Eagle Pharmaceuticals, Inc.. Completed at 4 sites in Saudi Arabia. Open to participants aged 18 Years to 99 Years. Per ClinicalTrials.gov, last updated 2021-05-19.

Sponsored by Eagle Pharmaceuticals, Inc. · Phase 3, Interventional, and Treatment

Phase
Phase 3
Study type
Interventional
Enrollment
17
Allocation
Randomized
Ages
18 Years to 99 Years
Sex
All
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Study summary

A double-blind, parallel study of Ryanodex for the adjuvant treatment of exertional heat stroke (EHS) compared to current Standard of Care (SOC) for EHS.

Read the detailed description

Following triage and primary assessment in the emergency medical facility, subjects will be randomized to 1 of 2 treatment arms, SOC plus Ryanodex or SOC only. Subjects will be dosed and followed for up to 6 hours post-randomization. Current SOC is limited to body cooling and supportive measures.

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Conditions studied

  • Exertional Heat Stroke

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03

In context

Heat Stroke

21 studies on the registry are indexed under Heat Stroke; 10 are open to participants now.

This study's enrollment of 17 is below the median of 34 across 13 interventional studies indexed under Heat Stroke.

Browse Heat Stroke studies →

Lead sponsor

Eagle Pharmaceuticals, Inc. is the lead sponsor of 6 studies on the registry; none 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 99 Years
Sexes eligible
All
Accepts healthy volunteers
No

Eligibility criteria

Inclusion Criteria: Core body temperature of greater than or equal to 40.0 degrees C (104 degrees F); recent history of exertional activity; GCS score less than 13; tachycardia -

Exclusion Criteria: clinical severe infection; hyperthermia secondary to another condition; endotracheal intubation;; sedative drugs administered prior to or at time of study entry; likelihood of head trauma within 6 months pre-study; positive pregnancy test; history of myocardial infection within 30 days; history of seizure disorder or epilepsy; concomitant or prior use of calcium channel blockers.

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Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Care provider)
Enrollment
17 participants (actual)

Study arms

  • Experimental
    Ryanodex and Standard of Care

    In addition to Standard of Care measures, Ryanodex (dantrolene sodium) for injectable suspension; 250 mg/vial will be administered.

    Drug: Ryanodex and Standard of Care

  • Other
    Standard of Care only (SOC)

    Standard of Care treatment will consist of the immediate start of cooling measures.

    Other: Standard of Care

Interventions

  • DrugRyanodex and Standard of Care

    Ryanodex to be administered as a rapid IV push

    Also known as: Ryanodex and SOC

  • OtherStandard of Care

    Body cooling measures and supportive measures

    Also known as: SOC

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What researchers measure

Primary outcomes

  1. Cumulative Incidence of Recovery of Level of Consciousness Defined as a Glasgow Coma Scale (GCS) GCS ≥ 13 [Time Frame: 90 Minutes Post-randomization]

    The GCS is a validated and reliable scale to evaluate level of consciousness in patients with acute brain injury. The scale assesses 3 functions: Eye Opening, Verbal Response, and Motor Response. GCS scores range from 15 (best) to 3 (worst).

    Time frame: 90 minutes post-randomization

Secondary outcomes

  1. Cumulative Incidence of Recovery of Level of Consciousness Defined as a Glasgow Coma Scale (GCS) Greater Than or Equal to 13 Over the Course of the Study [Time Frame: Study Duration]

    The GCS is a validated and reliable scale to evaluate level of consciousness in patients with acute brain injury. The scale assesses 3 functions: Eye Opening, Verbal Response, and Motor Response. GCS scores range from 15 (best) to 3 (worst).

    Time frame: Treatment duration, up to 6 hours

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Results

Posted Apr 26, 2021

Participant flow

Participant flow — Overall Study
MilestoneRyanodex and Standard of CareStandard of Care Only (SOC)
Started98
Completed72
Not completed26
Withdrew: Adverse event11
Withdrew: Transferred to other facility10
Withdrew: Investigator decision04
Withdrew: Determined to be ineligible for study01

Outcome measures

PrimaryCumulative Incidence of Recovery of Level of Consciousness Defined as a Glasgow Coma Scale (GCS) GCS ≥ 13 [Time Frame: 90 Minutes Post-randomization]

The GCS is a validated and reliable scale to evaluate level of consciousness in patients with acute brain injury. The scale assesses 3 functions: Eye Opening, Verbal Response, and Motor Response. GCS scores range from 15 (best) to 3 (worst).

Time frame:
90 minutes post-randomization
Reported as:
Count of participants · Participants
Cumulative Incidence of Recovery of Level of Consciousness Defined as a Glasgow Coma Scale (GCS) GCS ≥ 13 [Time Frame: 90 Minutes Post-randomization]
ParticipantsRyanodex and Standard of CareStandard of Care Only (SOC)
Cumulative Incidence of Recovery of Level of Consciousness Defined as a Glasgow Coma Scale (GCS) GCS ≥ 13 [Time Frame: 90 Minutes Post-randomization]42
SecondaryCumulative Incidence of Recovery of Level of Consciousness Defined as a Glasgow Coma Scale (GCS) Greater Than or Equal to 13 Over the Course of the Study [Time Frame: Study Duration]

The GCS is a validated and reliable scale to evaluate level of consciousness in patients with acute brain injury. The scale assesses 3 functions: Eye Opening, Verbal Response, and Motor Response. GCS scores range from 15 (best) to 3 (worst).

Time frame:
Treatment duration, up to 6 hours
Reported as:
Count of participants · Participants
Cumulative Incidence of Recovery of Level of Consciousness Defined as a Glasgow Coma Scale (GCS) Greater Than or Equal to 13 Over the Course of the Study [Time Frame: Study Duration]
ParticipantsRyanodex and Standard of CareStandard of Care Only (SOC)
Pts. achieving GCS score ≥ 13 at 15 min post-randomization10
Pts. achieving GCS score ≥ 13 at 30 min. post-randomization10
Pts. achieving GCS score ≥ 13 after 45 min. post-randomization10
Pts. achieving GCS score ≥ 13 after 60 min. post-randomization21
Pts. achieving GCS score ≥ 13 after 75 min. post-randomization32
Pts. achieving GCS score ≥ 13 after 90 min. post-randomization42
Pts. achieving GCS score ≥ to 13 after 2 hr.. post-randomization52
Pts. achieving GCS score ≥ 13 after 4 hr. post-randomization/follow-up phase52
Pts. achieving GCS score ≥ 13 at end of study or early termination52

Adverse events

Collected over Adverse events data was collected from time of randomization through end of study (6 hours post-randomization) or early termination.. Non-serious events are listed at a 1% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Ryanodex and Standard of Care0/9 (0%)1/9 (11.1%)7/9 (77.8%)
Standard of Care Only (SOC)0/8 (0%)2/8 (25%)5/8 (62.5%)
Most frequent serious events
Most frequent serious events
EventRyanodex and Standard of CareStandard of Care Only (SOC)
SeizureNervous system disorders0/91/8
DyspnoeaRespiratory, thoracic and mediastinal disorders0/91/8
Coma Scale AbnormalInvestigations1/90/8
Most frequent other events
Showing 10 of 12
Most frequent other events
EventRyanodex and Standard of CareStandard of Care Only (SOC)
SeizureNervous system disorders0/93/8
HypoglycaemiaMetabolism and nutrition disorders0/91/8
DyspnoeaRespiratory, thoracic and mediastinal disorders0/91/8
DiarrhoeaGastrointestinal disorders1/90/8
NauseaGastrointestinal disorders1/90/8
Coma Scale AbnormalInvestigations1/90/8
Haemoglobin decreasedInvestigations1/90/8
AcidosisMetabolism and nutrition disorders1/90/8
HyperglycaemiaMetabolism and nutrition disorders1/90/8
AgitationNervous system disorders1/90/8

Baseline characteristics

Age, Continuous
Age, Continuous(years)Ryanodex and Standard of CareStandard of Care Only (SOC)Total
Mean55.3 ± 7.253.4 ± 11.254.4 ± 9.0
Sex: Female, Male
Sex: Female, Male(Participants)Ryanodex and Standard of CareStandard of Care Only (SOC)Total
Female7512
Male235
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)Ryanodex and Standard of CareStandard of Care Only (SOC)Total
Hispanic or Latino000
Not Hispanic or Latino303
Unknown or Not Reported6814
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Ryanodex and Standard of CareStandard of Care Only (SOC)Total
American Indian or Alaska Native000
Asian6410
Native Hawaiian or Other Pacific Islander000
Black or African American000
White101
More than one race000
Unknown or Not Reported246
Region of Enrollment
Region of Enrollment(participants)Ryanodex and Standard of CareStandard of Care Only (SOC)Total
Saudi Arabia9817
Weight
Weight(kg)Ryanodex and Standard of CareStandard of Care Only (SOC)Total
Mean86.1 ± 16.984.2 ± 12.985.2 ± 14.7
Height
Height(cm)Ryanodex and Standard of CareStandard of Care Only (SOC)Total
Mean162.8 ± 7.6159.3 ± 7.7161.3 ± 7.6
BMI
BMI(kg/m^2)Ryanodex and Standard of CareStandard of Care Only (SOC)Total
Mean32.4 ± 5.933.2 ± 5.732.7 ± 5.6

2 further baseline measures are reported on the registry.

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Study locations

4 sites
  • King Faisal Hospital
    Mecca, Saudi Arabia
  • Mina al Jisr Hospital
    Mina, Saudi Arabia
  • Mina Al-Shari Al-Jadeed Hospital
    Mina, Saudi Arabia
  • Mina Al-Wadi Hospital
    Mina, Saudi Arabia
09

References and documents

Publications

  • Fisher JD, Shah AP, Norozian F. Clinical Spectrum of Pediatric Heat Illness and Heatstroke in a North American Desert Climate. Pediatr Emerg Care. 2022 Feb 1;38(2):e891-e893. doi: 10.1097/PEC.0000000000002438. PubMed 33848093 ↗

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: No

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on May 19, 2021, 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
NCT03600376
Lead sponsor
Eagle Pharmaceuticals, Inc.
Responsible party
Sponsor
First posted
Jul 26, 2018
Start date
Aug 19, 2018
Primary completion
Aug 14, 2019
Completion
Aug 14, 2019
Results posted
Apr 26, 2021
Last update
May 19, 2021

Study contacts

Adrian Hepner
study director · Eagle Pharmaceuticals, Inc.

Oversight

Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Apr 2021. You cannot join it, but the record below documents what was studied.

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