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A Study of Prasugrel in Pediatric Participants With Sickle Cell Disease (SCD)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
 
ClinicalTrials.gov Identifier: NCT01794000
Recruitment Status : Terminated (The study is being terminated for lack of efficacy.)
First Posted : February 18, 2013
Results First Posted : July 27, 2016
Last Update Posted : September 25, 2019
Sponsor:
Collaborator:
Daiichi Sankyo, Inc.
Information provided by (Responsible Party):
Eli Lilly and Company

Study Description
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Brief Summary:
The main purpose of the study is to evaluate the efficacy and safety of the study drug known as prasugrel for the reduction of Vaso-Occlusive Crisis events in pediatric participants with sickle cell disease. The study will also investigate reduction in daily pain in children who have sickle cell disease.

Condition or disease Intervention/treatment Phase
Sickle Cell Disease Drug: Prasugrel Drug: Placebo Phase 3

Detailed Description:

The submission database was validated for data reported through the data cutoff date for the submission database lock (SDBL). The SDBL data cutoff was 17 July 2015 for all participants except for 2 in the youngest age group, for whom the SDBL data cutoff occurred on 08 August 2015. The data cutoff date for SDBL corresponds to the primary completion date for the study. The SDBL occurred on 31 August 2015.

The study was stopped following SDBL and review of the topline information indicated that the primary and secondary efficacy endpoints were not met. Subsequently, the Sponsor requested that participants discontinue study drug immediately and that discontinuation visits for all active study participants be conducted as soon as feasible.

After the data cutoff date for SDBL, the Sponsor continued to collect safety data through the final participants contact; some additional efficacy data were collected through the final visit. The last patient visit (LPV) occurred on 17 December 2015, which corresponds to the study completion date and led to the planned supplemental database lock (PSDBL) on 22 January 2016. This supplemental data base was originally designed to capture additional blinded and randomized information to enhance safety data for labeling should the study have been positive.

The safety information contained in this record reflects the entire safety information and reflects the information from the supplemental data base lock in January of 2016. The efficacy information contained in this record reflects the information collected through primary completion date in the submission database. Primary analyses of the major efficacy objectives were repeated using the entire double-blind period data from the PSDBL and did not change the original conclusions and were consistent with the results from the original efficacy analyses included in the SDBL.

Study Design
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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 341 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Triple (Participant, Care Provider, Investigator)
Primary Purpose: Treatment
Official Title: A Phase 3, Double-Blind, Randomized, Efficacy and Safety Comparison of Prasugrel and Placebo in Pediatric Patients With Sickle Cell Disease.
Study Start Date : April 2013
Actual Primary Completion Date : July 2015
Actual Study Completion Date : December 2015

Resource links provided by the National Library of Medicine

Drug Information available for: Prasugrel

Arms and Interventions
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Arm Intervention/treatment
Experimental: Prasugrel
Participants will be titrated from initial daily dose of 0.08 milligram per kilogram (mg/kg) of orally administered prasugrel monotherapy at randomization to a dose that will achieve a P2Y12 reaction units (PRU) level of 231 to 136, as measured by VerifyNow instrument. This corresponds to a range of platelet inhibition of approximately 30% to 60%. The maximum possible dose allowed is 0.12 mg/kg daily, not to exceed 10 mg daily.
 Drug: Prasugrel
Administered orally
Other Names:
  • LY640315
  • Effient
  • Efient
Placebo Comparator: Placebo
Participants in this treatment group will receive daily orally administered placebo and will follow visit schedule identical to that in the active treatment group.
 Drug: Placebo
Administered orally


Outcome Measures
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Primary Outcome Measures :
  1. Number of Vaso-Occlusive Crisis (VOC) Events Per Participant Per Year (Rate of VOC) [ Time Frame: Randomization through 24 Months ]
    The VOC is a composite endpoint of painful crisis or acute chest syndrome. Events that occurred within 7 days from the prior event onset date were not counted as a new episode. Data collected through the primary completion date reported below.


Secondary Outcome Measures :
  1. Monthly Rate of Days With Pain [ Time Frame: Randomization through 9 Months ]
    Monthly rate of days with pain was measured through participant diaries using a modified version of the Faces Pain Scale-Revised (FPS-R). Each day participants selected the face on the scale that reflected their worst pain related to sickle cell disease (SCD) on that day. This pain scale contains six faces corresponding to the pain intensity of 0, 2, 4, 6, 8 or 10, in which 0 denotes no pain and 10 denotes the worst pain possible. Any day the participant selected a face other than face 0 was considered a day with pain. Monthly rate of days with pain was calculated for each participant by summing the number of days reported with any pain divided by the number of non-missing diary entries completed in the month. A month was defined as 4 weeks (28 days).The monthly rate was set to missing if there were more than 14 missing entries for the FPS-R in a specific month. Data collected through the primary completion date are present below.

  2. Monthly Mean in Faces Pain Scale-Revised Score [ Time Frame: Randomization through 9 Months ]
    Each day participants selected the face on the FPS-R scale that reflected their worst pain related to sickle cell disease (SCD) on that day. Monthly mean in FPS-R score was calculated for each participant by summing the FPS-R score divided by the number of non-missing diary entries completed in the month. This pain scale contains six faces corresponding to the pain intensity of 0, 2, 4, 6, 8 or 10, in which 0 denotes no pain and 10 denotes the worst pain possible. A month was defined as 4 weeks (28 days). The monthly mean in FPS-R score was set to missing if there were more than 14 missing entries for the FPS-R in a specific month. Data collected through the primary completion date are presented below.

  3. Number of Painful Crisis Events Per Participant Per Year (Rate of Painful Crisis) [ Time Frame: Randomization through 24 Months ]
    A painful crisis is defined as an onset of moderate to severe pain that lasts at least 2 hours for which there is no explanation other than vaso-occlusion and which requires therapy with oral or parenteral opioids, ketorolac, or other analgesics prescribed by a health care provider (HCP) in a medical setting such as a hospital, clinic, emergency room visit, or telephone management. The painful crisis that occurred within 7 days from the prior event onset date was not counted as a new episode. Data collected through the primary completion date are presented below.

  4. Number of Hospitalizations for VOC Per Participant Per Year (Rate of Hospitalizations) [ Time Frame: Randomization through 24 Months ]
    Hospitalization that occurred within 7 days of the prior event onset date were not counted as a new episode. Data collected through the primary completion date are presented below.

  5. Number of Acute Chest Syndrome Per Participant Per Year (Rate of Acute Chest Syndrome) [ Time Frame: Randomization through 24 Months ]
    Acute chest syndrome was defined as an acute illness characterized by fever and/or respiratory symptoms, accompanied by a new pulmonary infiltrate on a chest X-ray. Acute chest syndrome that occurred within 7 days of the prior event onset date was not counted as a new episode. Data collected through the primary completion date are presented below.

  6. Number of Red Blood Cell (RBC) Transfusions Due to Sickle Cell Disease (SCD) Per Participant Per Year (Rate of RBC Transfusions) [ Time Frame: Randomization through 24 Months ]
    RBC transfusions that occurred within 7 days of the prior event onset date were not counted as a new episode. Data collected through the primary completion date are presented below.

  7. Monthly Rate of Days of Analgesic Use [ Time Frame: Randomization through 9 Months ]
    Monthly rate of days of analgesic use was measured through participant diaries and was calculated for each participant by summing the number of days they reported analgesic use divided by the number of diary entries completed in the month. A month was defined as 4 weeks (28 days). The monthly rate was set to missing if there were more than 14 missing entries for analgesic use in a specific month. Data collected through the primary completion date are presented below.

  8. Quarterly Rate of School Absence Due to Sickle Cell Pain [ Time Frame: Randomization through 9 Months ]
    Quarterly rate of school absence due to sickle cell pain was measured through participant diaries and was calculated for each participant by summing the number of days with school absence due to sickle cell pain divided by the number of school dates in the quarter. A quarter was defined as 12 weeks. The quarterly rate was set to missing if there were more than 6 weeks of missing diary entries during a specific quarter. Data collected through the primary completion date are presented below.

  9. Time to First Transient Ischemic Attack (TIA)/Ischemic Stroke [ Time Frame: Randomization through 24 Months ]
  10. Number of Days Hospitalized for VOC [ Time Frame: Randomization through 24 Months ]
    The total length of hospitalization in days for VOC was calculated for each participant. Data collected through the primary completion date are presented below.

  11. Time From Randomization to First and Second VOC [ Time Frame: Randomization to First VOC and Second VOC respectively (up to 24 Months) ]
    Data collected through the primary completion date are presented below.

  12. Percentage of Participants With Hemorrhagic Events Requiring Medical Intervention [ Time Frame: First Dose through 24 Months ]
    Medical intervention was defined as any medical evaluation resulting in therapy or further investigation, as determined by a trained medical professional. Data collected from the first dose of study medication through 10 days after last dose of study medication during the double blind study period are presented below.


Eligibility Criteria
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Information from the National Library of Medicine

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Ages Eligible for Study:   2 Years to 17 Years   (Child)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • Have SCD [homozygous sickle cell (HbSS) or hemoglobin (HbS) Beta^0 thalassemia]
  • Are participants with SCD who have had ≥2 episodes of vaso-occlusive crisis (VOC) in the past year
  • Have a body weight ≥19 kilograms (kg) and are ≥2 and <18 years of age, inclusive at the time of screening
  • If participants are ≥2 and ≤16 years of age, must have had a transcranial Doppler within the last year

Exclusion Criteria:

  • History of: transient ischemic attack (TIA)/ ischemic or hemorrhagic stroke, severe head trauma, intracranial hemorrhage, intracranial neoplasm, arteriovenous malformation, or aneurysm
  • History of abnormal or conditional [velocity in middle or anterior cerebral, or internal carotid artery ≥170 centimeter per second (cm/sec)] transcranial Doppler within the last year
  • History of, or are undergoing treatment with, chronic red blood cell (RBC) transfusion therapy
  • Are at an increased risk for bleeding complications
  • Are receiving chronic treatment with nonsteroidal anti-inflammatory drug (NSAID)s and cannot be switched to another analgesic
Contacts and Locations
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Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01794000


Locations
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Sponsors and Collaborators
Eli Lilly and Company
Daiichi Sankyo, Inc.
Investigators
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Study Director: Call 1-877-CTLILLY (1-877-285-4559) or 1-317-615-4559 Mon-Fri 9 AM - 5 PM Eastern time (UTC/GMT - 5 hours, EST) Eli Lilly and Company
More Information
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Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):

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Responsible Party: Eli Lilly and Company
ClinicalTrials.gov Identifier: NCT01794000    
Other Study ID Numbers: 13038
H7T-MC-TADO ( Other Identifier: Eli Lilly and Company )
2012-003837-41 ( EudraCT Number )
First Posted: February 18, 2013    Key Record Dates
Results First Posted: July 27, 2016
Last Update Posted: September 25, 2019
Last Verified: September 2019
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: Yes
Plan Description: Anonymized individual patient level data will be provided in a secure access environment upon approval of a research proposal and a signed data sharing agreement.
Time Frame: Data are available 6 months after the primary publication and approval of the indication studied in the US and EU, whichever is later. Data will be indefinitely available for requesting.
Access Criteria: A research proposal must be approved by an independent review panel and researchers must sign a data sharing agreement.
URL: https://vivli.org/
Additional relevant MeSH terms:
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Anemia, Sickle Cell
Anemia, Hemolytic, Congenital
Anemia, Hemolytic
Anemia
Hematologic Diseases
 Hemoglobinopathies
Genetic Diseases, Inborn
Prasugrel Hydrochloride
Platelet Aggregation Inhibitors