NCT03622476

Brief Summary

The study start on June 30, 2018. The Severe(F Ⅷ\<1%) hemophilia A children without F Ⅷ inhibitor combining were recruited to Test the concentration of the drug in the blood to provide better treatment.

Trial Health

43
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
155

participants targeted

Target at P50-P75 for phase_4

Timeline
Completed

Started Jun 2018

Typical duration for phase_4

Geographic Reach
1 country

1 active site

Status
unknown

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Start

First participant enrolled

June 30, 2018

Completed
1 month until next milestone

First Submitted

Initial submission to the registry

July 30, 2018

Completed
10 days until next milestone

First Posted

Study publicly available on registry

August 9, 2018

Completed
3 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

July 30, 2021

Completed
1 month until next milestone

Study Completion

Last participant's last visit for all outcomes

August 30, 2021

Completed
Last Updated

August 14, 2018

Status Verified

August 1, 2018

Enrollment Period

3.1 years

First QC Date

July 30, 2018

Last Update Submit

August 11, 2018

Conditions

Keywords

Hemophilia A,pharmacokinetics

Outcome Measures

Primary Outcomes (2)

  • Ultrasound evaluation

    the sonographer will use ultrasound to assess whether the patient's joint lesions become more severe than when they were enrolled.

    3 years

  • Imaging evaluation

    the imaging specialist will use MRI to assess whether the patient's joint lesions are more severe than when they were enrolled.

    3 years

Secondary Outcomes (2)

  • Annualized Bleeding Rate

    3 years

  • Annualized Joint Bleeding Rate

    3 years

Study Arms (1)

PK research

EXPERIMENTAL

Interventional studies were performed in the 1-7 year old subgroup, and the children received a comprehensive assessment and PK test every 3 months. After the 72-hour washout period, 50 IU/kg of concentrated FVIII was administered in a single dose, and blood was taken within half an hour before the infusion and 1 h, 9 h, 24 h, and 48 h after the infusion, and the samples were centrifuged. If the assessment considers that the treatment is inadequate, then the valley concentration target is upgraded.

Drug: concentrated FVIII

Interventions

Intervention if the assessment considers that the treatment is inadequate

PK research

Eligibility Criteria

Age1 Year - 14 Years
Sexmale
Healthy VolunteersNo
Age GroupsChild (0-17)

You may qualify if:

  • FⅧ\<1% ,
  • years old,
  • There have been at least one history of bleeding in any joint of the knee, elbow, or ankle.
  • A blood product containing FVIII is applied.
  • There were no inhibitors at the time of enrollment, and there was no inhibitor-positive history and family history.
  • Clinical visits are available on a regular basis and data is available, and preventive treatment is available prior to enrollment.
  • The child was enrolled in the group and the guardian agreed.

You may not qualify if:

  • Combining other disease researchers believes that it is not suitable for enrollment.
  • FVIII inhibitor was found.
  • Refuse to participate in research

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Beijing Children's Hospital

Beijing, Beijing Municipality, 100045, China

RECRUITING

Central Study Contacts

chen zhen ping, Ph.D

CONTACT

Study Design

Study Type
interventional
Phase
phase 4
Allocation
NA
Masking
NONE
Purpose
TREATMENT
Intervention Model
SINGLE GROUP
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Capital Medical Univercity

Study Record Dates

First Submitted

July 30, 2018

First Posted

August 9, 2018

Study Start

June 30, 2018

Primary Completion

July 30, 2021

Study Completion

August 30, 2021

Last Updated

August 14, 2018

Record last verified: 2018-08

Data Sharing

IPD Sharing
Will not share

Locations