- ICH GCP
- Yhdysvaltain kliinisten tutkimusten rekisteri
- Kliininen tutkimus NCT07826988
Adaptive Platform Trial for Pain Management in Sickle Cell Vaso-Occlusive Crisis (PAMAVOC)
Adaptive Platform Trial for Pain Management During Vaso-Occlusive Crisis in Adult Patients With Sickle Cell Disease
Sickle cell disease (SCD) is a severe hemoglobinopathy, characterized by recurrent vaso-occlusive crises (VOC) causing intense pain and frequent hospitalizations in adult patients. Current French and British guidelines recommend rapid administration of strong opioids, primarily through patient-controlled analgesia (PCA), as the reference treatment for hospitalized patients experiencing VOC. However, opioid use is associated with dose-dependent adverse effects, including nausea, constipation, pruritus, sedation, and hypoventilation, the latter representing a risk factor for acute chest syndrome.
The hypothesis underlying this study is that multimodal analgesia-combining morphine PCA with co-analgesics such as paracetamol-can significantly reduce morphine consumption during hospitalization compared to opioid-only analgesia, while maintaining effective pain control. Although several co-analgesic agents (paracetamol, NSAIDs, nefopam, tramadol, ketamine) are recommended by expert guidelines, including those from the American Society of Hematology (2020) and French recommendations (2025), the level of evidence supporting their use in adult sickle cell patients remains low or non-existent for most agents, with no randomized controlled trials available for nefopam, tramadol, or ketamine.
Using an adaptive platform design, this trial aims to compare multiple analgesic strategies against standard opioid-based care, generating higher-quality evidence to optimize pain management protocols for adult patients experiencing VOC
Tutkimuksen yleiskatsaus
Tila
Interventio / Hoito
- Lääke: Group 01 Control: Paracetamol + Morphine
- Lääke: Group 02 Paracetamol + Morphine + Ketamine
- Lääke: Group 03 : Paracetamol + Morphine + Nefopam
- Lääke: Group 04 : Paracetamol + Morphine + Nefopam + Ketamine
- Lääke: Goup 05 : Paracetamol + Morphine + Tramadol
- Lääke: Group 6 : Paracetamol + Morphine + Tramadol + Ketamine
- Lääke: Group 7 : Paracetamol + Morphine + Ketoprofen
- Lääke: Group 08 : Paracetamol + Morphine + Ketoprofen + Ketamine
Opintotyyppi
Ilmoittautuminen (Arvioitu)
Vaihe
- Vaihe 4
Yhteystiedot ja paikat
Opiskeluyhteys
- Nimi: Samia BALOUL
- Puhelinnumero: 01 49 81 33 85
- Sähköposti: samia.baloul@aphp.fr
Tutki yhteystietojen varmuuskopiointi
- Nimi: Ségolène GENDREAU
- Puhelinnumero: 01.45.17.85.06
- Sähköposti: segolene.gendreau@aphp.fr
Osallistumiskriteerit
Kelpoisuusvaatimukset
Opintokelpoiset iät
- Aikuinen
- Vanhempi Aikuinen
Hyväksyy terveitä vapaaehtoisia
Kuvaus
Inclusion Criteria:
- Adult patients (age ≥18 years)
- Diagnosed with major sickle cell syndrome (SS homozygous, SC or Sβ° or Sβ+ thalassemia compound heterozygous)
- Hospitalized and presenting with a vaso-occlusive crisis (VOC), defined as acute pain or tenderness affecting at least one part of the body, including the limbs, ribs, sternum, head (skull), spine, and/or pelvis, not attributable to other causes
- Requiring intravenous morphine or its derivatives
- Informed consent obtained from the patient (or from a trusted support person, family member, or relative), or emergency inclusion procedure in cases where the patient is unable to consent and no trusted support person, family member, or relative is available
Exclusion Criteria:
- Refusal to participate
- Pregnant or breastfeeding patient
- Administration of one of the interventional group treatments within 4 hours prior to inclusion
- Intravenous morphine treatment for more than 24 hours
- Patient already included in the study within the previous 3 months
- Patient receiving long-term opioid therapy
- Not affiliated with a social security scheme, or patient under State Medical Aid (AME)
- Patient under legal protection measures (guardianship / family authorization with representation mandate / future protection mandate) or under supervised guardianship (curatelle)
- Patient deprived of liberty
- Participation in another clinical trial involving a drug
- Participation in the PAMAVOC trial within the previous 3 months
- Contraindication to standard VOC treatment:
- Hypersensitivity to opioids
- Opioid-induced hyperalgesia, defined by increased pain on nociceptive testing, topographic extension, or the onset of allodynia with increasing opioid doses
- Renal impairment, defined as creatinine clearance ≤30 mL/minute
- Hepatocellular impairment, defined as prothrombin time <40%
- Impaired consciousness, defined as a Glasgow Coma Scale score ≤13/15
Exclusion from a Specific Intervention (randomization possible to other study arms):
- Hypersensitivity to the active substance or to any of the excipients
- Respective contraindications to nefopam, tramadol, ketoprofen, and ketamine, as described in their respective Summaries of Product Characteristics (SmPC)
Opintosuunnitelma
Miten tutkimus on suunniteltu?
Suunnittelun yksityiskohdat
- Ensisijainen käyttötarkoitus: Hoito
- Jako: Satunnaistettu
- Inventiomalli: Rinnakkaistehtävä
- Naamiointi: Ei mitään (avoin tarra)
Aseet ja interventiot
Osallistujaryhmä / Arm |
Interventio / Hoito |
|---|---|
|
Active Comparator: Group 01 Control : Paracetamol + Morphine
|
Participants receive intravenous paracetamol and morphine via patient-controlled analgesia (PCA).
In case of hyperalgic VOC, morphine dosage may be increased according to the treating physician's judgment
|
|
Kokeellinen: group 02 : Paracetamol + Morphine + Ketamine
|
Participants receive intravenous paracetamol and morphine via PCA.
In case of hyperalgic VOC, low-dose ketamine may be added as a co-analgesic, off-label, according to the treating physician's judgment.
|
|
Kokeellinen: Group 03 : Paracetamol + Morphine + Nefopam
|
Participants receive intravenous paracetamol, morphine via PCA, and nefopam.
In case of hyperalgic VOC, morphine dosage may be increased according to the treating physician's judgment.
|
|
Kokeellinen: Group 04 : Paracetamol + Morphine + Nefopam + Ketamine
|
Participants receive intravenous paracetamol, morphine via PCA, and nefopam.
In case of hyperalgic VOC, low-dose ketamine may be added as a co-analgesic, off-label, according to the treating physician's judgment.
|
|
Kokeellinen: Group 05 : Paracetamol + Morphine + Tramadol
|
Participants receive intravenous paracetamol, morphine via PCA, and tramadol.
In case of hyperalgic VOC, morphine dosage may be increased according to the treating physician's judgment.
|
|
Kokeellinen: Group 06 : Paracetamol + Morphine + Tramadol + Ketamine
|
Participants receive intravenous paracetamol, morphine via PCA, and tramadol.
In case of hyperalgic VOC, low-dose ketamine may be added as a co-analgesic, off-label, according to the treating physician's judgment.
|
|
Kokeellinen: Group 07 : Paracetamol + Morphine + Ketoprofen
|
Participants receive intravenous paracetamol, morphine via PCA, and ketoprofen.
In case of hyperalgic VOC, morphine dosage may be increased according to the treating physician's judgment.
|
|
Kokeellinen: Group 08 : Paracetamol + Morphine + Ketoprofen + Ketamine
|
Participants receive intravenous paracetamol, morphine via PCA, and ketoprofen.
In case of hyperalgic VOC, low-dose ketamine may be added as a co-analgesic, off-label, according to the treating physician's judgment.
|
Mitä tutkimuksessa mitataan?
Ensisijaiset tulostoimenpiteet
Tulosmittaus |
Toimenpiteen kuvaus |
Aikaikkuna |
|---|---|---|
|
Time to resolution of vaso-occlusive crisis (VOC)
Aikaikkuna: Up to 14 days after randomization.
|
Time to resolution of vaso-occlusive crisis is defined as the time from randomization to discontinuation of intravenous opioid therapy, measured in hours.
|
Up to 14 days after randomization.
|
Toissijaiset tulostoimenpiteet
Tulosmittaus |
Toimenpiteen kuvaus |
Aikaikkuna |
|---|---|---|
|
Intravenous Morphine Consumption
Aikaikkuna: From admission to discharge, assessed up to 14 dayss)
|
Cumulative dose (mg) and mean daily dose (mg/day) of intravenous morphine.
|
From admission to discharge, assessed up to 14 dayss)
|
|
Transfusion Requirements
Aikaikkuna: From admission to discharge, assessed up to 14 days
|
Number of red blood cell units transfused.
|
From admission to discharge, assessed up to 14 days
|
|
Intensive Care Unit Admission
Aikaikkuna: From admission to discharge, assessed up to 14 days
|
Admission to intensive care unit during hospitalization.
|
From admission to discharge, assessed up to 14 days
|
|
Morphine-Related Adverse Effects
Aikaikkuna: Within 3 months (+/- 15 days)
|
Constipation, sedation (impaired consciousness requiring opioid discontinuation or naloxone administration), vomiting, and secondary acute chest syndrome (new pulmonary infiltrate associated with a clinical sign such as fever, or a respiratory sign such as chest pain or dyspnea).
|
Within 3 months (+/- 15 days)
|
|
Length of Hospital Stay
Aikaikkuna: From admission to discharge, assessed up to 14 days
|
Duration of hospitalization, measured in days
|
From admission to discharge, assessed up to 14 days
|
|
Hyperalgic Vaso-Occlusive Crisis
Aikaikkuna: from randomization to discontinuation of intravenous opioid therapy Up to 14 days
|
Uncontrolled pain requiring morphine titration >1 mg/kg or total intravenous morphine consumption >2 mg/kg/24h.
|
from randomization to discontinuation of intravenous opioid therapy Up to 14 days
|
|
Refractory Vaso-Occlusive Crisis
Aikaikkuna: From randomization to discontinuation of intravenous opioid therapy Up to 14 days
|
Visual analog scale (VAS) score >7/10 after administration of study treatments and a new morphine titration (1 mg/kg).
|
From randomization to discontinuation of intravenous opioid therapy Up to 14 days
|
|
Adverse Effects of Investigational Medicinal Products
Aikaikkuna: Within 3 months (+/- 15 days)
|
Including nefopam (seizure); NSAIDs (acute kidney injury, KDIGO stage >0; gastrointestinal or other bleeding); tramadol (seizure, liver function abnormalities, impaired consciousness with GCS <14/15); ketamine (liver function abnormalities, hallucinations, impaired consciousness with GCS <14/15, venous access complications).
|
Within 3 months (+/- 15 days)
|
|
In-Hospital Mortality
Aikaikkuna: Duration of hospital stay, assessed up to 14 days
|
Death occurring during hospitalization.
|
Duration of hospital stay, assessed up to 14 days
|
|
Unplanned Readmission
Aikaikkuna: Within 3 months (+/- 15 days) after discharge
|
Unplanned hospital readmission within 3 months following the index hospitalization.
|
Within 3 months (+/- 15 days) after discharge
|
Yhteistyökumppanit ja tutkijat
Tutkijat
- Opintojen puheenjohtaja: Ségolène GENDREAU, MD, PhD, Assistance public Hôpitaux de Paris
Opintojen ennätyspäivät
Opi tärkeimmät päivämäärät
Opiskelun aloitus (Arvioitu)
Ensisijainen valmistuminen (Arvioitu)
Opintojen valmistuminen (Arvioitu)
Opintoihin ilmoittautumispäivät
Ensimmäinen lähetetty
Ensimmäinen toimitettu, joka täytti QC-kriteerit
Ensimmäinen Lähetetty (Todellinen)
Tutkimustietojen päivitykset
Viimeisin päivitys julkaistu (Todellinen)
Viimeisin lähetetty päivitys, joka täytti QC-kriteerit
Viimeksi vahvistettu
Lisää tietoa
Tähän tutkimukseen liittyvät termit
Avainsanat
Muita asiaankuuluvia MeSH-ehtoja
- Neurologiset ilmenemismuodot
- Hermoston sairaudet
- Geneettiset sairaudet, synnynnäiset
- Neurokäyttäytymisoireet
- Hematologiset sairaudet
- Anemia, hemolyyttinen, synnynnäinen
- Anemia, hemolyyttinen
- Anemia
- Hemoglobinopatiat
- Havaintohäiriöt
- Synnynnäiset, perinnölliset ja vastasyntyneiden sairaudet ja poikkeavuudet
- Patologiset tilat, merkit ja oireet
- Merkit ja oireet
- Hemic- ja imusuutteet
- Anemia, sirppisolu
- Agnosia
- Vaso-okklusiiviset kriisit
- Orgaaniset kemikaalit
- Heterosykliset yhdisteet, 1-rengas
- Heterosykliset yhdisteet
- Heterosykliset yhdisteet, sulatettu rengas
- Lipidit
- Hiilivety
- Sykloheksanit
- Sykloparaffiinit
- Hiilivedyt, aliisykliset
- Hiilivedyt, sykliset
- Karboksyylihapot
- Alkaloidit
- Poltisykliset aromaattiset hiilivedyt
- Polisykliset yhdisteet
- Amiini
- Alkoholit
- Heterosykliset yhdisteet, 4 tai useammat renkaat
- Hapot, karbosyklinen
- Morfinalaiset
- Opiaatti -alkaloidit
- Heterosykliset yhdisteet, sillalla oleva rengas
- Fenanthreenit
- Morfiinijohdannaiset
- Fenyylipropionaatit
- Sykloheksanolit
- Heksaanolit
- Rasva -alkoholit
- Dimetyyliamiinit
- Metyyliamiini
- Oxatsosiinit
- Atsoosiinit
- Morfiini
- Ketamiini
- Tramadol
- Ketoprofeeni
- Nefopam
Muut tutkimustunnusnumerot
- APHP251244
- 2026-527112-16-00 (Ctis)
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