ClinicalTrials.gg
CompletedNCT02513095Updated Jun 29, 2021Results posted

Efficacy and Safety of Ryanodex® (EGL-4104) as Adjuvant Treatment in Subjects With Exertional Heat Stroke (EHS)

A Phase 2 interventional study of Dantrolene sodium for injectable suspension in Heat Stroke, sponsored by Eagle Pharmaceuticals, Inc.. Completed at 1 site in Saudi Arabia. Open to participants aged 18 Years to 45 Years. Per ClinicalTrials.gov, last updated 2021-06-29.

Sponsored by Eagle Pharmaceuticals, Inc. · Phase 2, Interventional, and Treatment

Phase
Phase 2
Study type
Interventional
Enrollment
34
Allocation
Randomized
Ages
18 Years to 45 Years
Sex
All
01

Study summary

Study EGL-4104-C-1502 is a phase 2, single-site, open-label, randomized, 2-arm parallel study of Ryanodex for the adjuvant treatment of exertional heat stroke (EHS) administered intravenously (IV), to current standard of care (SOC). SOC for the treatment of EHS is defined as effective body cooling, which should be implemented as quickly as available after diagnosis of exertional heat stroke.

Read the detailed description

The study will take place at emergency medical facilities.

Due to the life-threatening nature of exertional heat stroke (EHS), rapid assessment for inclusion into the study and subsequent immediate treatment must occur. Following initial triage and primary assessment of a subject, the subject's baseline status should be documented, and once a diagnosis of EHS is obtained, SOC treatment will be initiated immediately, the subject will be randomized to one of two treatment arms (SOC only or SOC plus Ryanodex).

Patients will be remain hospitalized for up to 72 hours after administration of the first dose of study drug and implemented SOC and will receive all necessary supportive measures until resolution of symptoms.

Study duration: 72 hours

02

Conditions studied

  • 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 34 is close to 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.

04

Who can participate

Ages eligible
18 Years to 45 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Subjects may be entered in the study if they have a core body temperature obtained rectally of ≥ 40.0°C (104°F)
  • Recent history or suspected recent history (prior 24 hours) of performing intense physical activity (exertional activity)
  • The subject has an impaired consciousness level as evidenced by a GCS score \< 13
  • The subject has tachycardia (heart rate ≥ 100 bpm)

Exclusion criteria

Exclusion Criteria:

  • The subject is diagnosed with or is suspected of having an acute clinically severe infection, which in the opinion of the Investigator may increase the subject's risk for participating in the study and/or may impair the ability of performing and/or interpreting study assessments
  • The subject has severe hyperthermia secondary to a condition other than heat stroke (e.g., serotonin syndrome, thyrotoxicosis, pheochromocytoma, or brain hemorrhage)
  • There is likelihood of head trauma in the past 6 months, or other significant cardiovascular, pulmonary, hepatic, endocrine, or renal illness that in the opinion of the Investigator may increase the subject's risk for participating in the study and/or may impair the ability of performing and/or interpreting study assessments
  • A female subject has a positive pregnancy test (urine) or evidence of active lactation
  • Reported known use of potent inhibitors
  • A known history of allergy or to dantrolene
  • A history of chronic and ongoing assisted mechanical ventilation prior to the onset of EHS via an established artificial or supported airway (e.g., for severe [COPD], upper airway disease, impaired respiratory function). Note: Endotracheal intubation and mechanical ventilation as part of supportive measures for the treatment of EHS are allowed
Terms in these criteria, in plain language(3)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

CYP3A (CYP3A4) inhibitors and inducers

CYP3A is a group of enzymes, mainly CYP3A4, in the liver and gut that break down many medicines. Some medicines, supplements and foods (grapefruit, St John’s wort) slow them down or speed them up, which changes how much of a study drug stays in the body.

Studies list them so they can be avoided or switched; bring a list of everything you take, including supplements.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

COPD

Chronic obstructive pulmonary disease: long-term lung disease that makes it hard to breathe out, including emphysema and chronic bronchitis.

05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
34 participants (actual)

Study arms

  • Experimental
    Ryanodex

    Ryanodex (dantrolene sodium) for injectable suspension administered as an IV bolus, in addition to standard of care (SOC) treatment.

    Drug: Dantrolene sodium for injectable suspension

  • No intervention
    Standard of Care only (SOC)

    Standard of Care (SOC) treatment only, consisting of body cooling and supportive measures implemented immediately.

Interventions

06

What researchers measure

Primary outcomes

  1. Number of Subjects Achieving Recovery of Level of Consciousness Defined as a Glasgow Coma Scale (GCS) GCS ≥ 13

    Number of subjects achieving a Glasgow Coma Scale(GCS) ≥ 13 at or prior to 90 minutes post-randomization. The Glasgow Coma Scale (GCS) is a reliable and objective way of recording the initial and subsequent level of consciousness in a person after a brain injury. The range of total GCS score is 3 to15 where a higher GCS score represents a better outcome. The scores of subscales are summed to determine the total score\*. A GCS score of 13-15 is considered Mild impairment of consciousness; a GCS score of 9-12 is considered Moderate impairment of consciousness; and a GCS score of 3-8 is considered Severe. \*Subscales: Eyes Response -Spontaneous=4; To sound =3; To Pressure=2; None=1; not tested. Verbal Response- Oriented=5; Confused=4; Words=3; Sounds=2; None-1; Not tested. Motor Response: Obeys Commands=6; Localizes=5; Normal Flexion=4; Abnormal Flexion=3; Extension=2; None=1; Not tested.

    Time frame: 90 minutes post-randomization

07

Results

Posted May 9, 2017

Participant flow

Participant flow — Overall Study
MilestoneActiveControl
Started1717
Treatment phase - up to 120 minutes1717
Completed1717
Not completed00

Outcome measures

PrimaryNumber of Subjects Achieving Recovery of Level of Consciousness Defined as a Glasgow Coma Scale (GCS) GCS ≥ 13

Number of subjects achieving a Glasgow Coma Scale(GCS) ≥ 13 at or prior to 90 minutes post-randomization. The Glasgow Coma Scale (GCS) is a reliable and objective way of recording the initial and subsequent level of consciousness in a person after a brain injury. The range of total GCS score is 3 to15 where a higher GCS score represents a better outcome. The scores of subscales are summed to determine the total score\*. A GCS score of 13-15 is considered Mild impairment of consciousness; a GCS score of 9-12 is considered Moderate impairment of consciousness; and a GCS score of 3-8 is considered Severe. \*Subscales: Eyes Response -Spontaneous=4; To sound =3; To Pressure=2; None=1; not tested. Verbal Response- Oriented=5; Confused=4; Words=3; Sounds=2; None-1; Not tested. Motor Response: Obeys Commands=6; Localizes=5; Normal Flexion=4; Abnormal Flexion=3; Extension=2; None=1; Not tested.

Time frame:
90 minutes post-randomization
Reported as:
Count of participants · Participants
Number of Subjects Achieving Recovery of Level of Consciousness Defined as a Glasgow Coma Scale (GCS) GCS ≥ 13
ParticipantsRyanodex Plus Standard of CareStandard of Care
Number of Subjects Achieving Recovery of Level of Consciousness Defined as a Glasgow Coma Scale (GCS) GCS ≥ 1352
Statistical analysis
  • Ryanodex Plus Standard of Care vs Standard of Care · Chi-squared, Corrected · p = 0.396 · Odds ratio (or): 6 · 95% CI 0.6 to 76.8

Adverse events

Collected over .Up to 30 days post-discharge.. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Ryanodex1/17 (5.9%)4/17 (23.5%)17/17 (100%)
Standard of Care Only (SOC)0/17 (0%)3/17 (17.6%)17/17 (100%)
Most frequent serious events
Most frequent serious events
EventRyanodexStandard of Care Only (SOC)
HypoxiaRespiratory, thoracic and mediastinal disorders2/170/17
Disseminated intravascular coagulationBlood and lymphatic system disorders0/171/17
Cardiac ArrestCardiac disorders1/170/17
Cardio-Respiratory ArrestCardiac disorders1/170/17
Diabetic KetoacidosisMetabolism and nutrition disorders0/171/17
HypoglycemiaMetabolism and nutrition disorders0/171/17
Acute Respiratory Distress SyndromeRespiratory, thoracic and mediastinal disorders0/171/17
Most frequent other events
Showing 10 of 22
Most frequent other events
EventRyanodexStandard of Care Only (SOC)
HypoxiaRespiratory, thoracic and mediastinal disorders2/176/17
ChillsGeneral disorders0/173/17
AgitationPsychiatric disorders2/173/17
Blood Creatine Phosphokinase IncreasedInvestigations2/170/17
Platelet Count DecreasedInvestigations1/172/17
DehydrationInvestigations2/170/17
DysphagiaGastrointestinal disorders1/170/17
NauseaGastrointestinal disorders1/170/17
VomitingGastrointestinal disorders1/170/17
Alanine Aminotransferase IncreasedInvestigations1/170/17

Baseline characteristics

Age, Categorical
Age, Categorical(Participants)Ryanodex Plus Standard of CareStandard of Care Only (SOC)Total
<=18 years000
Between 18 and 65 years171734
>=65 years000
Sex: Female, Male
Sex: Female, Male(Participants)Ryanodex Plus Standard of CareStandard of Care Only (SOC)Total
Female8513
Male91221
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Ryanodex Plus Standard of CareStandard of Care Only (SOC)Total
American Indian or Alaska Native000
Asian639
Native Hawaiian or Other Pacific Islander000
Black or African American224
White123
More than one race81018
Unknown or Not Reported000
Glasgow Coma Scale
Glasgow Coma Scale(units on a scale)Ryanodex Plus Standard of CareStandard of Care Only (SOC)Total
Mean6.1 ± 3.985.9 ± 3.186.0 ± 3.55
08

Study locations

1 site
  • Mecca, Saudi Arabia
09

References and documents

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: No

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jun 29, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT02513095
Lead sponsor
Eagle Pharmaceuticals, Inc.
Collaborators
Quintiles, Inc.
Responsible party
Sponsor
First posted
Jul 31, 2015
Start date
Sep 2015
Primary completion
Sep 2015
Completion
Oct 2015
Results posted
May 9, 2017
Last update
Jun 29, 2021

Study contacts

Adrian Hepner, MD
study director · Eagle Pharmaceuticals, Inc.

Oversight

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

Not currently enrolling

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

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Studies of the drug tested here: Dantrolene

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