New treatment for shrimp and cashew allergies shows promise, but study stopped early
NCT ID NCT03504774
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tested a treatment called oral immunotherapy (OIT) for people with shrimp or cashew allergies. Participants slowly ate increasing amounts of the allergen to build tolerance. The study aimed to see how immune cells change over a year. It included 58 people aged 7 to 55, but was stopped early.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 2
Tests whether the treatment actually works, and watches for side effects, in a larger group.
- Participants
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58 people
The number who actually took part.
- Started
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Jul 2019
- Finished
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Mar 2023
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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7 to 55 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Subject and/or parent guardian must be able to understand and provide informed consent * Age 7 through 55 years (inclusive) * Clinical history of allergy to cashew or shrimp-containing foods * Serum IgE to cashew or shrimp of ≥0.35 kUA/L \[determined by UniCAPTM within the past 12 months\] and/or a SPT to cashew or shrimp ≥3 mm compared to control * Experience dose-limiting symptoms at or before the 300 mg challenge dose of FA protein on Screening DBPCFC conducted in accordance with PRACTALL guidelines * Written informed consent from adult participants * Written informed consent from parent/guardian for minor participants * Written assent from minor participants as appropriate (e.g., above the age of 7 years or the applicable age per local regulatory requirements) * All female subjects of child-bearing potential will be required to provide a blood or urine sample for pregnancy testing that must be negative one week before being allowed to participate in the study. * Use of effective birth control by female participants of child-bearing potential. Exclusion Criteria: * Inability or unwillingness of a participant to give written informed consent or comply with study protocol * History of uncontrolled cardiovascular disease, including uncontrolled hypertension * History of other chronic disease (other than asthma, atopic dermatitis, or allergic rhinitis) requiring therapy (e.g., heart disease, diabetes) that is, or is at significant risk of becoming unstable or requiring a change in chronic therapeutic regimen and, in the opinion of the Principal Investigator, would represent a risk to the subject's health or safety in this study or the subject's ability to comply with the study protocol. * History of eosinophilic esophagitis (EoE), other eosinophilic gastrointestinal disease, chronic, recurrent, or severe gastroesophageal reflux disease (GERD) grade 3 according to CTCAE version 5.0, symptoms of dysphagia (e.g., difficulty swallowing, food "getting stuck"), or recurrent gastrointestinal symptoms of undiagnosed etiology * Current participation in any other interventional study * Subject is currently in the build-up phase of immunotherapy to another allergen and is on maintenance immunotherapy dose for any allergen related to cashew or shrimp * Severe asthma (NAEPP EPR-3 Medication Criteria Steps 5 or 6) * Mild or moderate asthma (NAEPP EPR-3 Medication Criteria Steps 1-4), if not controlled as indicated by an ACT\<19 * A hospitalization for asthma in the past 6 months * ER visit for asthma within the past 6 months * Burst or steroid course for asthma in the past 6 months * Use of omalizumab or biologic therapy (e.g., infliximab, rituximab, etc.) within the past 6 months * Use of complementary and alternative medicine (CAM) treatment modalities (e.g., herbal remedies) for atopic and /or non-atopic disease within 90 days preceding Initial Dose Escalation Day (IDED) or at any time after the IDED * Use of beta-blockers (oral) * Pregnancy or lactation * Allergy to oat * History of severe anaphylaxis to cashew or shrimp with symptoms including hypotension requiring fluid resuscitation and/or the need for mechanical ventilation within the last year * Use of investigational drugs within 12 weeks of participation * Past or current medical problems or findings from physical assessment or laboratory testing that are not listed above, which, in the opinion of the investigator, may pose additional risks from participation in the study, may interfere with the participant's ability to comply with study requirements or that may impact the quality or interpretation of the data obtained from the study
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Sean N Parker Center For Allergy and Asthma Research
Palo Alto, California, 94304, United States
More trials for these conditions
Other studies related to the condition(s) this trial covers.