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CompletedNCT02580773TASCUpdated Feb 9, 2024

Therapeutic Anticoagulation Strategy for Acute Chest Syndrome

A Phase 3 interventional study of Prophylactic anticoagulation ( INNOHEP®) and Curative anticoagulation ( INNOHEP®) in Anemia, Sickle Cell and Acute Chest Syndrome, sponsored by Assistance Publique - Hôpitaux de Paris. Completed at 1 site in France. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2024-02-09.

Sponsored by Assistance Publique - Hôpitaux de Paris · Phase 3, Interventional, and Treatment

Phase
Phase 3
Study type
Interventional
Enrollment
198
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

Acute Chest Syndrome (ACS) is a pulmonary complication of sickle cell disease (SCD) representing the leading cause of death and the second cause of hospitalization among adult patients. Pulmonary vaso-occlusion is one of the main pathophysiologic hypotheses during ACS. Our hypothesis is that therapeutic anticoagulation may reduce the severity of ACS via the alleviation of pulmonary thrombosis. The main objective of this prospective, randomized, double-blind study is to test the efficacy and safety of a curative anticoagulation strategy during ACS. The main efficacy endpoint is time to ACS resolution. The main safety endpoint is number of major bleedings.

A thoracic CT scan will be performed to check for pulmonary artery thrombosis. If the CT scan is positive (thrombosis within a large elastic artery), the patient will not be randomized and will be treated with a curative anticoagulation. If the CT scan is negative, the patient will be randomized to receive subcutaneous anticoagulation with low molecular weight heparin (tinzaparin) either at a curative dose (175 Unit International (UI)/kg/day for 7 days) or at a prophylactic dose (4500 UI/day).

02

Conditions studied

  • Anemia
  • Sickle Cell
  • Acute Chest Syndrome
  • Low-Molecular-Weight Heparin

Keywords

  • Sickle cell disease
  • Anemia
  • Rare disease
  • Reanimation
  • Prophylactic anticoagulation
03

In context

Acute Chest Syndrome

37 studies on the registry are indexed under Acute Chest Syndrome; 11 are open to participants now.

This study's enrollment of 198 is above the median of 63 across 26 interventional studies indexed under Acute Chest Syndrome.

Browse Acute Chest Syndrome studies →

Lead sponsor

Assistance Publique - Hôpitaux de Paris is the lead sponsor of 3,505 studies on the registry; 1,006 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 and older
Sexes eligible
All
Accepts healthy volunteers
No

Eligibility criteria

Inclusion Criteria:

  • Age ≥ 18 years
  • Major sickle cell syndrome (SS, SC, Sβ)
  • ACS defined by the association of a new infiltrate on chest X-ray or CT scan and a respiratory symptom or abnormal chest auscultation
  • Written, informed consent

Main Exclusion Criteria:

  • Pregnancy, post-partum
  • Iodine allergy
  • Extreme weight (\<40 kg or > 100 kg)
  • Moderate to severe renal insufficiency
  • Moya-moya disease
  • Symptomatic cerebral aneurysm
  • Major transfusional risk
  • Uncontrolled severe retinopathy
  • All other contra-indications to curative anti-coagulation by tinzaparin.
05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
198 participants (actual)

Study arms

  • Other
    Prophylactic anticoagulation

    Drug: Prophylactic anticoagulation ( INNOHEP®)

  • Experimental
    Curative anticoagulation

    Drug: Curative anticoagulation ( INNOHEP®)

Interventions

  • DrugProphylactic anticoagulation ( INNOHEP®)

    subcutaneous anticoagulation with low molecular weight heparin (tinzaparin) at a prophylactic dose (4500 UI/day)

  • DrugCurative anticoagulation ( INNOHEP®)

    subcutaneous anticoagulation with low molecular weight heparin (tinzaparin) at a curative dose (175 UI/kg/day for 7 days)

06

What researchers measure

Primary outcomes

  1. The main efficacy endpoint is time to ACS resolution

    The delay between randomization and ACS resolution

    Time frame: up to 15 days

  2. Number of major bleedings

    Time frame: up to 15 days

Secondary outcomes

  1. Number of complicated ACS

    Time frame: up to 15 days

  2. Blood volume exchanged

    Time frame: up to 15 days

  3. Cumulative dose of opioids

    Time frame: up to 15 days

  4. Hospital mortality

    Time frame: up to 15 days

  5. Duration of hospital stay

    Time frame: up to 15 days

  6. Number of non-major bleedings

    Time frame: up to 15 days

  7. Number of readmissions and thromboembolic events within 6 months

    Time frame: at 6 months

07

Study locations

1 site
  • Henri Mondor Hospital
    Creteil, 94010, France
08

References and documents

Publications

  • Qari MH, Aljaouni SK, Alardawi MS, Fatani H, Alsayes FM, Zografos P, Alsaigh M, Alalfi A, Alamin M, Gadi A, Mousa SA. Reduction of painful vaso-occlusive crisis of sickle cell anaemia by tinzaparin in a double-blind randomized trial. Thromb Haemost. 2007 Aug;98(2):392-6. PubMed 17721622 ↗
  • Mekontso Dessap A, Deux JF, Abidi N, Lavenu-Bombled C, Melica G, Renaud B, Godeau B, Adnot S, Brochard L, Brun-Buisson C, Galacteros F, Rahmouni A, Habibi A, Maitre B. Pulmonary artery thrombosis during acute chest syndrome in sickle cell disease. Am J Respir Crit Care Med. 2011 Nov 1;184(9):1022-9. doi: 10.1164/rccm.201105-0783OC. PubMed 21836136 ↗
09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Feb 9, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT02580773
Lead sponsor
Assistance Publique - Hôpitaux de Paris
Collaborators
LEO Pharma
Responsible party
Sponsor
First posted
Oct 20, 2015
Start date
Dec 16, 2016
Primary completion
Feb 4, 2021
Completion
Sep 15, 2021
Last update
Feb 9, 2024

Study contacts

Bernard Maitre, MD, PhD
principal investigator · Assistance Publique - Hôpitaux de Paris
Armand Mekontso Dessap, MD, PhD
study chair · Assistance Publique - Hôpitaux de Paris

Oversight

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

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This study is completed, as verified in Apr 2020. You cannot join it, but the record below documents what was studied.

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