Treatment Efficacy
Conditions
Brief summary
This application is being submitted as a follow-up to Protocol Oral Immunotherapy for Induction of Tolerance in Peanut Allergic Children-The IMPACT Study. The IMPACT study was a double-blind, placebo-controlled study of peanut oral immunotherapy in children 12-48 months of age. As part this protocol, all participants who received placebo treatment were promised the opportunity to receive open label treatment at the conclusion of the double-blind phase and initial follow-up. At the time of submitting that protocol, the investigator did not specify any detailed protocol for the open label crossover treatment, as this is an evolving field, but the investigator is now ready to offer this open label treatment as promised.
Detailed description
This study will enroll up to 20 subjects aged 4-9 years old who were enrolled in the placebo arm of the IMPACT study. Once subjects have completed participation in the IMPACT study, subjects will be offered the option of participating in this open label, peanut oral immunotherapy study. After the informed consent has been signed, subjects will undergo an initial dose escalation to peanut protein to establish the starting dose for the build-up phase. The starting dose of peanut protein for the build-up phase will be the highest tolerated dose during the initial dose escalation. The subject will return to the study site and the first starting dose of peanut protein will be given under observation. Subjects will be sent home with doses of peanut protein to administer at home. Subject will return every 2 weeks for dose adjustments. Once subjects have tolerated a dose under observation, subjects will then continue dosing at home with OIT and return to the research unit every 2 weeks for a 1-step dose escalation to a maximum daily dose of 1000 mg. Participants who do not reach the 1000mg dose by 40-weeks of build-up phase may enter the maintenance phase at their highest tolerated dose. When subjects reach their maximum tolerated dose of either 1000 mg per day, or the maximum tolerated dose during the 40 weeks of the build-up phase, subjects will enter the maintenance phase. Subjects will continue daily dosing of peanut protein at the maximum tolerated dose during the 12-week maintenance phase. At the end of the maintenance phase, subjects will undergo an open peanut oral food challenge to a maximum of 4000 mg of peanut protein to determine individualized guidelines for the introduction of peanut into the subject's diet based on the outcome of the open peanut challenge The primary objective of this protocol is to provide open label peanut oral immunotherapy (OIT) for those subjects who received placebo treatment in the IMPACT Study . Secondary objectives will include: 1\. Efficacy of the treatment, as defined by an end of treatment oral peanut challenge. Safety, as measured by the incidence of adverse events and the proportion of subjects who discontinue treatment due to adverse events
Interventions
DRUGPeanut Flour
open label oral immunotherapy
Sponsors
Johns Hopkins University
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE
Intervention model description
Open Label crossover
Eligibility
Sex/Gender
ALL
Age
4 Years to 9 Years
Healthy volunteers
No
Inclusion criteria
Patients who meet all of the following criteria are eligible for enrollment as study participants, including participants who: * Subjects who were randomized to the placebo arm of protocol NA\_00077852 Oral Immunotherapy for Induction of Tolerance in Peanut Allergic Children. * Parent guardian must be able to understand and provide informed consent * Peanut allergy, as defined by a reaction to a cumulative dose of ≤1000 mg of peanut protein during the End-of-Treatment food challenge from Protocol NA\_00077852 Oral Immunotherapy for Induction of Tolerance in Peanut Allergic Children
Exclusion criteria
Patients who meet any of these criteria are not eligible for enrollment as study participants, including participants who: * Inability or unwillingness of a parent guardian to give written informed consent or comply with study protocol * History of severe anaphylaxis to peanut, defined by severe hypoxia, hypotension, neurological compromise, confusion, cardiovascular collapse, or loss of consciousness * Significant chronic disease (other than asthma, rhinitis, or atopic dermatitis) requiring therapy; e.g., heart disease or cystic fibrosis which is judged by the investigator to have potential impact on study outcomes or safety. * Severe or poorly controlled atopic dermatitis per investigator's discretion * Past or current history of eosinophilic gastrointestinal disease * Diagnosis of asthma that meets any of the following criteria: * Uncontrolled asthma (as per Global Initiative for Asthma \[GINA\] latest guidelines) * History of 2 or more systemic corticosteroid courses or 1 systemic course within the 3 previous months prior to visit 1 for treating wheezing * Prior intubation/mechanical ventilation for asthma * Currently receiving β-blocking agents, angiotensin-converting enzyme inhibitors, angiotensin-receptor blockers, calcium channel blockers or tricyclic antidepressant therapy. * Current participation in another clinical trial or participation in another clinical trial in the last 90 days
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Number of Participants With Treatment-related Adverse Events (AEs) | up to 52 weeks | Number of participants who reported symptoms which were collected as AEs using CTCAE v4.0. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Amount of Peanut Protein Tolerated at the End-of-treatment Peanut Challenge | up to 52 weeks | This measure assessed the amount of peanut protein \[in milligrams (mg)\] tolerated by each participant at the end-of-treatment peanut challenge. |
Countries
United States
Participant flow
Participants by arm
| Arm | Count |
|---|---|
| Peanut Flour: Open Label Peanut OIT This is an open label treatment for subjects who had previously received placebo treatment in a prior peanut OIT study
Peanut Flour: open label oral immunotherapy | 7 |
| Total | 7 |
Baseline characteristics
| Characteristic | Peanut Flour: Open Label Peanut OIT |
|---|---|
| Age, Categorical <=18 years | 7 Participants |
| Age, Categorical >=65 years | 0 Participants |
| Age, Categorical Between 18 and 65 years | 0 Participants |
| Age, Continuous | 7.6 years |
| Race (NIH/OMB) American Indian or Alaska Native | 0 Participants |
| Race (NIH/OMB) Asian | 1 Participants |
| Race (NIH/OMB) Black or African American | 0 Participants |
| Race (NIH/OMB) More than one race | 0 Participants |
| Race (NIH/OMB) Native Hawaiian or Other Pacific Islander | 0 Participants |
| Race (NIH/OMB) Unknown or Not Reported | 0 Participants |
| Race (NIH/OMB) White | 6 Participants |
| Region of Enrollment United States | 7 Participants |
| Sex: Female, Male Female | 1 Participants |
| Sex: Female, Male Male | 6 Participants |
Adverse events
| Event type | EG000 affected / at risk |
|---|---|
| deaths Total, all-cause mortality | 0 / 7 |
| other Total, other adverse events | 7 / 7 |
| serious Total, serious adverse events | 0 / 7 |
Outcome results
Primary
Number of Participants With Treatment-related Adverse Events (AEs)
Number of participants who reported symptoms which were collected as AEs using CTCAE v4.0.
Time frame: up to 52 weeks
| Arm | Measure | Value (COUNT_OF_PARTICIPANTS) |
|---|---|---|
| Peanut Flour: Open Label Peanut OIT | Number of Participants With Treatment-related Adverse Events (AEs) | 7 Participants |
Secondary
Amount of Peanut Protein Tolerated at the End-of-treatment Peanut Challenge
This measure assessed the amount of peanut protein \[in milligrams (mg)\] tolerated by each participant at the end-of-treatment peanut challenge.
Time frame: up to 52 weeks
Population: Data reported for each participant.
| Arm | Measure | Group | Value (NUMBER) |
|---|---|---|---|
| Peanut Flour: Open Label Peanut OIT | Amount of Peanut Protein Tolerated at the End-of-treatment Peanut Challenge | Participant 2 | 4000 mg |
| Peanut Flour: Open Label Peanut OIT | Amount of Peanut Protein Tolerated at the End-of-treatment Peanut Challenge | Participant 3 | 4000 mg |
| Peanut Flour: Open Label Peanut OIT | Amount of Peanut Protein Tolerated at the End-of-treatment Peanut Challenge | Participant 4 | 4000 mg |
| Peanut Flour: Open Label Peanut OIT | Amount of Peanut Protein Tolerated at the End-of-treatment Peanut Challenge | Participant 5 | 4000 mg |
| Peanut Flour: Open Label Peanut OIT | Amount of Peanut Protein Tolerated at the End-of-treatment Peanut Challenge | Participant 7 | 2000 mg |
| Peanut Flour: Open Label Peanut OIT | Amount of Peanut Protein Tolerated at the End-of-treatment Peanut Challenge | Participant 1 | 4000 mg |
| Peanut Flour: Open Label Peanut OIT | Amount of Peanut Protein Tolerated at the End-of-treatment Peanut Challenge | Participant 6 | 4000 mg |