Which is the best treatment to relieve severe acute pain in the prehospital phase : Morphine or alfentanil ?

2025-522817-50-00 Protocol 22_RIPH1-08 Therapeutic use (Phase IV) Authorised, recruitment pending

Status Authorised, recruitment pending · 1 EU/EEA countries · 5 sites · Protocol 22_RIPH1-08

Overview

Sponsor-declared trial summary

Phase Therapeutic use (Phase IV)
Status Authorised, recruitment pending
Participants planned 242
Countries 1
Sites 5

Severe pain

To compare the analgesic efficacy 15 minutes after intravenous injection of morphine or alfentanil in adults with severe acute pain (≥ 6/10 on a numerical scale) in the pre-hospital setting.

Key facts

Sponsor
CHU De Martinique
Participant type
Patients
Age range
18-64 years, 65+ years
Gender
Male and Female
Therapeutic area
Health Care [N] - Population Characteristics [N01], Health Care [N] - Health Care Quality, Access, and Evaluation [N05], Diseases [C] - Pathological Conditions, Signs and Symptoms [C23]
Decision date (initial)
2025-11-24
Transition trial
No
Low-intervention
No
Rare-disease indication
No
Vulnerable population
Yes
Funding sources
GIRCI-SOHO

Trial design

CTIS Part I — objectives, methods, condition coding

Main objective

Scope: Safety, Efficacy, Therapy

To compare the analgesic efficacy 15 minutes after intravenous injection of morphine or alfentanil in adults with severe acute pain (≥ 6/10 on a numerical scale) in the pre-hospital setting.

Secondary objectives 8

  1. Compare the respiratory tolerence during pre-hospital care between the 2 treatment groups.
  2. Compare the haemodynamic tolerance during pre-hospital care between the 2 treatment groups.
  3. Compare the neurological tolerance during pre-hospital care between the 2 treatment groups.
  4. Compare the digestive tolerance during pre-hospital care between the 2 treatment groups.
  5. Compare the cutaneous tolerance during pre-hospital care between the 2 treatment groups.
  6. Compare between the 2 treatment groups the need for recourse to other analgesic or sedative drugs after the first injection of the analgesic treatment under study allocated by the randomisation protocol during the emergency medical services management phase.
  7. Compare the duration of the pre-hospital phase between the 2 treatment groups.
  8. Compare, according to the type of pain (traumatic or visceral), the analgesic efficacy 15 minutes after intravenous injection of morphine or alfentanil in adults with severe acute pain (≥ 6/10 on a numerical scale) in the pre-hospital setting.

Conditions and MedDRA coding

Severe pain

VersionLevelCodeTermSystem organ class
20.0 PT 10056350 Pain management 100000004865

Study design 2 periods

#TitleAllocationBlindingRoles blindedArms
1 Morphine arm
Patient randomisation is carried out using randomisation envelopes. This randomisation assigns the patient a treatment number and an inclusion number at random, in ascending order of the randomisation list established by the Methodology and Data Management Centre of the Martinique University Hospital before the start of the research. This list will be established using RedCAP® software. For each centre, the sponsor will prepare the number of envelopes corresponding to the randomisation list, which is composed of blocks of different sizes, taking into account the centre's recruitment commitment and lost to follow-up cases. The batch of envelopes will be sent to the principal investigators at each centre. However, if patient inclusion is carried out directly by the investigator, randomisation will be carried out by the nurse from the SAMU team. She will assign the randomisation envelopes, each containing the treatment to be administered, in chronological order and in accordance with the inclusion number.
Randomised Controlled Double [{"id":156394,"code":2,"name":"Investigator"},{"id":156395,"code":1,"name":"Subject"}] Morphine arm: Patient randomisation is carried out by the nurse from the SAMU team, using randomisation envelopes. This randomisation assigns the patient a treatment number and an inclusion number at random, in ascending order from the randomisation list established by the sponsor.

Each centre receives the number of randomisation envelopes corresponding to its recruitment commitment, taking into account those lost to follow-up.

Translated with DeepL.com (free version)
2 Alfentanil arm
Patient randomisation is carried out using randomisation envelopes. This randomisation assigns the patient a treatment number and an inclusion number at random, in ascending order of the randomisation list established by the Methodology and Data Management Centre of the Martinique University Hospital before the start of the research. This list will be established using RedCAP® software. For each centre, the sponsor will prepare the number of envelopes corresponding to the randomisation list, which is composed of blocks of different sizes, taking into account the centre's recruitment commitment and lost to follow-up cases. The batch of envelopes will be sent to the principal investigators at each centre. However, if patient inclusion is carried out directly by the investigator, randomisation will be carried out by the nurse from the SAMU team. She will assign the randomisation envelopes, each containing the treatment to be administered, in chronological order and in accordance with the inclusion number.
Randomised Controlled Double [{"id":156398,"code":1,"name":"Subject"},{"id":156397,"code":2,"name":"Investigator"}] Alfentanil arm: Patient randomisation is carried out by the nurse from the SAMU team, using randomisation envelopes. This randomisation assigns the patient a treatment number and an inclusion number at random, in ascending order from the randomisation list established by the sponsor.

Each centre receives the number of randomisation envelopes corresponding to its recruitment commitment, taking into account those lost to follow-up.

Eligibility criteria

Principal inclusion / exclusion criteria as submitted by sponsor

Inclusion criteria 5

  1. Patients aged 18 or over
  2. Attended by a SMUR team participating in the study and
  3. Presenting with severe acute pain defined by a numerical scale that he rates as 6/10 or more
  4. Person affiliated to or benefiting from a social security scheme in France and
  5. Free informed consent from the patient (possibility of inclusion in an emergency situation and signed consent to continue in the study

Exclusion criteria 17

  1. Patient having already received treatment with opiates/opioids or agonist-antagonist morphinomimetics, or partial antagonists, in the 6 hours prior to the arrival of the emergency medical services
  2. Known history of chronic respiratory failure, end-stage renal disease, hepatocellular insufficiency or myasthenia gravis
  3. Pregnant or breast-feeding women (known condition)
  4. Inability to use a venous or intraosseous approach
  5. Not affiliated to a Social Security scheme (beneficiary or beneficiary's beneficiary)
  6. Persons taking part in other research involving a period of exclusion still in progres
  7. Inability to self-assess pain
  8. 2nd or 3rd degree burns > 10% of skin surface area
  9. Indication and possibility of performing a locoregional anaesthetic (e.g. iliofacial block)
  10. Estimated weight >120 kg
  11. Initial loss of consciousness defined as GCS (Glasgow Coma Scale) < 15
  12. Arterial hypotension defined as systolic blood pressure < 80 mmHg
  13. Presence of initial respiratory failure defined as respiratory rate <12 cycles per min and/or oxygen saturation <90% on room air
  14. Known hypersensitivity to morphine
  15. Head injury and intracranial hypertension in the absence of controlled ventilation
  16. Uncontrolled epilepsy
  17. Known hypersensitivity to excipients present in the composition of morphine and/or alfentanil.

Endpoints

Primary and secondary outcome measures (English text)

Primary endpoints 1

  1. Proportion of patients with a pain level ≤ 3/10 measured on a numerical scale (EN) 15 minutes after the first injection of the analgesic treatment allocated by the randomisation protocol (morphine or alfentanil).

Secondary endpoints 8

  1. Percentage of patients with side effects respiratory, assessed by respiratory rate < 12 cycles/min and/or oxygen saturation < 90% on room air
  2. Percentage of patients with side effects haemodynamic, assessed by systolic blood pressure below 80 mmHg.
  3. Percentage of patients with side effects neurological, assessed by WHO sedation scale > S1 (S0 awake / S1 intermittently drowsy, easily awakened / S2 drowsy most of the time, awakened by verbal stimulation / S3 drowsy most of the time, awakened by tactile stimulation) or requiring recourse to naloxone.
  4. Percentage of patients with side effects digestive, assessed by the presence of nausea and/or vomiting.
  5. Percentage of patients with side effects cutaneous, assessed by the presence of pruritus.
  6. Percentage of patients who received additional analgesic and/or sedative treatment during SMUR care after the first injection of morphine or alfentanil (other than paracetamol).
  7. Time (in minutes) between first injection of analgesic and arrival at hospital.
  8. Percentage of patients, according to pain type (traumatic or visceral), with a pain level ≤ 3/10 measured using a numerical scale (NS) 15 minutes after the first injection of the analgesic treatment assigned by the randomisation protocol (morphine or alfentanil).

Investigational products

Investigational medicinal products (IMPs), comparators, placebo, auxiliary

Test 1

RAPIFEN 1 mg (0,5 mg/ml), solution injectable

PRD7253935 · Product

Active substance
Alfentanil Hydrochloride
Pharmaceutical form
SOLUTION FOR INJECTION
Route of administration
INTRAVENOUS BOLUS USE
Max daily dose
1.2 mg/kg milligram(s)/kilogram
Max total dose
1.8 mg/kg milligram(s)/kilogram
Max treatment duration
1 Day(s)
Authorisation status
Authorised
ATC code
N01AH02 — ALFENTANIL
Marketing authorisation
34009 554 605 7 2
MA holder
PIRAMAL CRITICAL CARE B.V.
MA country
France
Paediatric formulation
No
Orphan designation
No
Modified vs. Marketing Authorisation
Yes
Modification description
In this trial, ALFENATANIL is used to treat acute pain in pre-hospital care in consenting adults but not as anaesthesia according to it marketing authorisation

Comparator 1

MORPHINE (CHLORHYDRATE) AGUETTANT 10 mg/mL, solution injectable

PRD586318 · Product

Active substance
Morphine Hydrochloride
Pharmaceutical form
SOLUTION FOR INJECTION
Route of administration
INTRAVENOUS BOLUS USE
Max daily dose
12 mg/kg milligram(s)/kilogram
Max total dose
18 mg/kg milligram(s)/kilogram
Max treatment duration
1 Day(s)
Authorisation status
Authorised
ATC code
N02AA01 — MORPHINE
Marketing authorisation
34009 369 106 8 3
MA holder
LABORATOIRE AGUETTANT
MA country
France
Paediatric formulation
No
Orphan designation
No
Modified vs. Marketing Authorisation
No

Sponsors and contacts

Sponsor organisations, regulatory contacts, third parties

CHU De Martinique

Sponsor organisation
CHU De Martinique
Address
P. O. Box 90632
City
Fort De France Cedex
Postcode
97261
Country
France

Scientific contact point

Organisation
CHU De Martinique
Contact name
Principal Investigator

Public contact point

Organisation
CHU De Martinique
Contact name
Clinical Research and Innovation office

Locations

1 EU/EEA country · 5 investigational sites

By country

CountryMS statusPlanned subjectsSites
France Authorised, recruitment pending 242 5
Rest of world 0

Investigational sites

France

5 sites · Authorised, recruitment pending
CHU De Martinique
Service d’Accueil des Urgences Adultes -SAMU 972, P. O. Box 90632, 97261, Fort De France Cedex
Centre Hospitalier De Cayenne
Service d’Accueil des Urgences – SAMU/SMUR, Avenue Des Flamboyants, 97300, Cayenne
Centre Hospitalier Universitaire De Poitiers
Service des urgences adultes SAMU-SMUR, 2 Rue De La Miletrie, 86000, Poitiers
Centre Hospitalier Universitaire De La Guadeloupe
Service du SAMU-SMUR, Route De Chauvel, 97139, Les Abymes
Centre Hospitalier Universitaire De Toulouse
Service d’Aide Médicale d’Urgence de la Haute-Garonne, 1 Place Du Docteur Joseph Baylac, 31300, Toulouse

Results and documents

Annex IV summary of results, Annex V layperson summary, and all documents registered in CTIS for this trial

Documents 8 files

Public protocol annexes, IB summaries, regulatory submissions and post-authorisation documents registered in CTIS.

TypeTitleVersion
Protocol (for publication) D1_ Protocol 2025-522817-50-00 6.0
Recruitment arrangements (for publication) K1_ Informed consent_ Patient recruitment procedure 2.0
Subject information and informed consent form (for publication) L1_ SIS and continued CF adults 2.0
Subject information and informed consent form (for publication) L1_ SIS and ICF adults 2.0
Subject information and informed consent form (for publication) L1_ SIS and ICF LAR 2.0
Summary of Product Characteristics (SmPC) (for publication) G2_ SmPC morphine 1.0
Summary of Product Characteristics (SmPC) (for publication) G2_ SmPC Rapifen 1.0
Synopsis of the protocol (for publication) D1_ Protocol synopsis_ ENG 2025-522817-50-00 5.0

Application history

1 submissions — initial application plus substantial / non-substantial modifications

#TypeCodeSubmittedReference MSConclusionDecision date
1 INITIAL IN 2025-08-08 France Acceptable
2025-11-20
2025-11-24