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TerminatedNCT04904276Updated Mar 15, 2024

Observational Study of Fostamatinib as Second Line Therapy in Adult Patients With Immune Thrombocytopenia (ITP) and Insufficient Response to a Prior Therapy

An observational study in ITP and Immune Thrombocytopenia, sponsored by Rigel Pharmaceuticals. Terminated at 14 sites in United States. Open to participants aged 18 Years to 100 Years. Per ClinicalTrials.gov, last updated 2024-03-15.

Sponsored by Rigel Pharmaceuticals · Observational

Why this study was terminated
met minimum enrollment goal, however, enrollment was slow due to the pandemic, therefore, the study was terminated
Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
16
Ages
18 Years to 100 Years
Sex
All
01

Study summary

Evaluate patient characteristics, treatment patterns, clinical outcomes and safety of fostamatinib as second-line therapy in real-world clinical practice, for the treatment of ITP in adult patients who have an insufficient response to prior therapy (steroids ± immunoglobulins).

Read the detailed description

Evaluate patient characteristics, treatment patterns, clinical outcomes and safety of fostamatinib as second-line therapy in real-world clinical practice, for the treatment of ITP in adult patients who have an insufficient response to prior therapy (steroids ± immunoglobulins).

02

Conditions studied

  • ITP
  • Immune Thrombocytopenia

Keywords

  • Immune Thrombocytopenia
  • ITP
03

In context

Thrombocytopenia

697 studies on the registry are indexed under Thrombocytopenia; 152 are open to participants now.

This study's enrollment of 16 is below the median of 120 across 183 observational studies indexed under Thrombocytopenia.

Browse Thrombocytopenia studies →

Lead sponsor

Rigel Pharmaceuticals is the lead sponsor of 27 studies on the registry; 5 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 100 Years
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Probability sample

Study population

This two-cohort study will enroll approximately 45 patients diagnosed with ITP. Cohort 1 will enroll approximately 30 ITP patients who will begin treatment with fostamatinib as second-line therapy. Cohort 2 will enroll approximately 15 patients who have a record of at least 12 weeks of fostamatinib treatment as second-line therapy, with the intent to continue, at time of enrollment.

Inclusion criteria

  1. Willing and able to provide written informed consent
  2. Diagnosis of ITP in adult patients (≥ 18 years of age) with an insufficient response to steroids ± immunoglobulins and requiring a change in therapy
  3. For Cohort 1, intent to initiate fostamatinib at enrollment as change in therapy
  4. For Cohort 2, currently undergoing treatment with fostamatinib as second line therapy for at least 12 weeks, with the intent to continue, at the time of enrollment

Exclusion criteria

Exclusion Criteria:

  1. Any prior ITP therapy/treatment other than steroids ± immunoglobulins (e.g. rituximab, thrombopoietin receptor agonists (TPO), splenectomy)
  2. Participation in any interventional study during the course of this study
  3. Lack of historical platelet counts, at time of fostamatinib initiation for those entering Cohort 2
  4. Pregnant and/or nursing
05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
16 participants (actual)
Patient registry
No

Groups and cohorts

  • Initiating treatment with fostamatinib as second-line therapy

    Drug: Fostamatinib

  • Treated with fostamatinib for at least 12 weeks as second-line therapy

    Drug: Fostamatinib

Interventions

  • DrugFostamatinib

    Fostamatinib disodium

06

What researchers measure

Primary outcomes

  1. Fostamatinib dosing

    Changes in fostamatinib dosing

    Time frame: 12-month observation period

  2. Platelet counts over time during the course of fostamatinib therapy

    Platelet count and change from baseline in platelet count over time.

    Time frame: 12-month observation period

  3. Use of concomitant medications related to ITP

    Use of concomitant medications related to ITP during the study.

    Time frame: 12-month observation period

  4. Use of ITP Rescue Medication

    The number of patients with ITP rescue medication use at any time during the study.

    Time frame: 12-month observation period

  5. Safety of fostamatinib

    Evaluate continued safety of fostamatinib in ITP patients through adverse events

    Time frame: 12-month observation period

  6. ITP-PAQ Quality of life measure

    Use of the score from questionnaire to assess disease-specific quality of life in adults with ITP.

    Time frame: 12-month observation period

  7. Treatment satisfaction measure (MSQ)

    Time frame: 12-month observation period

  8. SF-36 Quality of life measure

    Scale of functional health and well-being from the patient's point of view.

    Time frame: 12-month observation period

07

Study locations

14 sites
  • Advanced Research
    Tamarac, Florida 33321, United States
  • Simmons Cancer Institute at Southern Illinois University
    Springfield, Illinois 62702, United States
  • University of Kansas Medical Center
    Kansas City, Kansas 66160, United States
  • Saint Agnes Hospital
    Baltimore, Maryland 21229, United States
  • The Center for Cancer and Blood Disorders
    Bethesda, Maryland 20817, United States
  • Maryland Oncology Hematology, P.A
    Clinton, Maryland 20735, United States
  • Maryland Oncology Hematology, P.A
    Columbia, Maryland 21044, United States
  • Maryland Oncology Hematology, P.A
    Rockville, Maryland 20850, United States
  • Maryland Oncology Hematology, P.A
    Silver Spring, Maryland 20904, United States
  • Boston Medical Center
    Boston, Massachusetts 02118, United States
  • Washington University
    Saint Louis, Missouri 63130, United States
  • Regional Cancer Care Associates, LLC
    Little Silver, New Jersey 07739, United States
  • New York Medical College Westchester Medical Center
    Valhalla, New York 10532, United States
  • New York Medical College
    Valhalla, New York 10595, United States
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 15, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT04904276
Lead sponsor
Rigel Pharmaceuticals
Responsible party
Sponsor
First posted
May 27, 2021
Start date
May 18, 2021
Primary completion
Nov 17, 2022
Completion
Nov 17, 2022
Last update
Mar 15, 2024

Oversight

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

Not currently enrolling

This study is terminated, as verified in Mar 2024. You cannot join it, but the record below documents what was studied.

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