Phase 4
N=23
Steroid Treatment for Hypereosinophilic Syndrome
Eosinophilia · Hypereosinophilic Syndrome · Leukocyte Disorder · Hematologic Diseases
Bottom Line
View on ClinicalTrials.gov: NCT01524536 ↗Enrolled (actual)
23
Serious AEs
0.0%
Results posted
Feb 2022
Primary outcome: Primary: Mean Percent Change in Eosinophil Count After Glucocorticoid Challenge — -69.6; -13.6 percentage of eosinophil count
Study Design & Population
- Study type
- Interventional
- Phase
- Phase 4
- Interventions
- prednisone (Drug)
- Age
- Pediatric, Adult, Older Adult · 7+ yrs
- Sex
- All
- Sponsor
- National Institute of Allergy and Infectious Diseases (NIAID)
- Primary completion
- Dec 2020
Outcome Measures
| Outcome | Result | p-value |
|---|---|---|
| PRIMARY Mean Percent Change in Eosinophil Count After Glucocorticoid Challenge |
-69.6; -13.6 | — |
| SECONDARY Participants With Glucocorticoid Responsiveness - IHES Variant |
6; 2; 2 | — |
| SECONDARY Participants With Glucocorticoid Responsiveness - LHES Variant |
2; 1; 2 | — |
| SECONDARY Participants With Glucocorticoid Responsiveness - MHES Variant |
0; 0; 1 | — |
| SECONDARY Participants With Glucocorticoid Responsiveness - Overlap HES Subtypes |
3; 2; 1 | — |
| SECONDARY Mean Baseline IgE Level |
285.2; 1171.5; 434.8 | — |
| SECONDARY Mean Baseline Absolute Eosinophil Count |
2.81; 3.85; 5.90 | — |
| SECONDARY Participants With Glucocorticoid Responsiveness - Cardiac Involvement |
1; 0; 4 | — |
| SECONDARY Participants With Glucocorticoid Responsiveness - Pulmonary Involvement |
4; 3; 3 | — |
Summary
Background:
- Hypereosinophilic syndrome (HES) is a disorder in which the body has too many eosinophils (a type of white blood cell). Too many eosinophils in HES can cause damage to the heart, nerves, or skin. Certain drugs can help lower eosinophil counts to prevent tissue damage. Corticosteroids, such as prednisone, are used for initial therapy in this disorder. Although most people respond to prednisone, some people develop side effects from it, or do not respond very well to treatment. Better ways of determining the dose to give could help to decide on the best therapy for HES.
Objectives:
* To determine whether a single-dose of prednisone can be used to predict which people with hypereosinophilia respond to treatment.
* To study lack of response to steroid treatment in people with HES.
Eligibility:
Inclusion criteria:
* Individuals with hypereosinophilic syndrome with high eosinophil counts.
* Individuals who are willing to have blood drawn before and after getting steroids.
Exclusion criteria:
* Individuals who are on more than 10mg of prednisone (or similar drug)
* Individuals with hypereosinophilic syndrome who are on other medications that could interfere with the study
* Women who are pregnant or breast-feeding
* Individuals who have a known gene mutation associated with chronic eosinophilic leukemia
* Children less than 18 years old who weigh less than 48kg or 106lb
Design:
* Participants will have a screening visit with a physical exam and medical history. Blood and urine samples will be collected.
* Participants will have a single dose of the steroid prednisone by mouth in the morning. Blood samples will be collected 2, 4, 24 hours after this dose.
* On the day after the steroid dose, participants will provide another blood sample in the morning.
* Participants will start to take prednisone daily when they return home. Blood samples will be collected weekly at the participant s doctor s office. The dose of prednisone will be lowered depending on the weekly eosinophil count. We will try to get each person on the lowest dose of prednisone possible that will control the disorder. Participants who do not respond or have severe side effects will be taken off prednisone. Other treatments will be considered for people who do not respond to steroids. The goal is to evaluate the response to prednisone. Our research will try to figure out why some people do not respond to steroids. Most people will complete the study within 6 to 16 weeks, depending on their response to prednisone.
Eligibility Criteria
- SUBJECT INCLUSION CRITERIA:
Subjects on Protocol #94-I-0079 will be eligible for participation in the study only if all of the following criteria apply:
- Subjects must be 7 years of age or older to enroll
- Subject meets diagnostic criteria for HES (AEC >1500/microL, absence of a secondary cause and signs and/or symptoms attributable to the eosinophilia)
- AEC greater than 1500 microL obtained within 14 days prior to enrollment
- Willingness to perform the timed steroid challenge
- Appropriate candidate for GC treatment after challenge
- Willingness to have samples stored for future research
SUBJECT EXCLUSION CRITERIA:
A subject will not be eligible to participate in the study if any of the following apply:
- Receiving >10 mg prednisone or equivalent at the time of enrollment.
- Receiving less than or equal to 10 mg of prednisone or equivalent but have not been on a fixed dose for at least 3 weeks (subjects on a current corticosteroid taper will be excluded).
- AEC less than or equal to 1500/microl on the day of the steroid challenge
- Use of immunomodulatory medications, (other than less than or equal to 10 mg/day prednisone) including but not limited to biologics, within the past 6 months.
- Pregnant at the time of screening.
- Have a known mutation in the FIP1L1-PDGFR gene.
- Any condition that, in the opinion of the investigator, places the subject at undue risk by participating in the protocol.
- Weight less than 48 kg (106 lbs) in subjects less than 18 years of age.
Data sourced from ClinicalTrials.gov (NCT01524536). Outcome figures and adverse-event rates are extracted automatically from the registry's posted results and are provided for clinician reference, not as a substitute for the primary publication.