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Fish allergy cure? new trial tests codfish therapy in kids

NCT ID NCT05590299

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing This study
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tests whether giving children with fish allergy small, increasing doses of codfish protein (oral immunotherapy) can help them tolerate fish without reactions. 70 children aged 2 to 10 will receive either codfish or a placebo for 12 months, then be tested for desensitisation and sustained unresponsiveness. The goal is to reduce the risk of accidental allergic reactions.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
codfish protein (oral immunotherapy)
What this could lead to
If it works, this could offer a way for children with fish allergy to safely eat fish without severe reactions, reducing fear of accidental exposure.
What could go wrong
This is an early-stage trial with only 70 children, so results may not apply to everyone. Oral immunotherapy can cause allergic reactions during treatment, and long-term tolerance is not guaranteed.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

70 people

The number who actually took part.

Started

Jan 2023

Expected to finish

Dec 2026

An estimate. End dates often move.

Lead sponsor

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

2 to 10 years

Sex

Anyone

Healthy volunteers

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

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Aged between 2 year and 10 years of age * \>7kg (the weight considered safe for the administration of an adrenaline autoinjector) (e.g. Jext) * Confirmed diagnosis of codfish allergy as defined by a failed DBPCFC with codfish and a positive SPT (\>=3mm than control) or sIgE to codfish (of at least 0.35 kUA) at screening. Exclusion Criteria: * Serum codfish-specific IgE antibody level \> 100 kUA/L * History of severe anaphylaxis (as defined by persistent hypotension, collapse, loss of consciousness, persistent hypoxia or ever needing more than three (3) doses of intramuscular adrenaline or an intravenous adrenaline infusion for management of an allergic reaction) * Severe anaphylaxis during the study entry DBPCFC (defined as persistent hypotension, collapse, loss of consciousness, persistent hypoxia, or requiring more than 3 doses of intramuscular adrenaline or an intravenous adrenaline infusion for management of an allergic reaction) * FEV1 \<85% at rest and FEV1/FVC ≤ 85% at rest or ongoing chronic persistent asthma (as per Australian Asthma Foundation guidelines) * Underlying medical conditions (e.g. cardiac disease) that increase the risks associated with anaphylaxis * Use of beta-blockers, and ACE inhibitors * Inflammatory intestinal conditions, indwelling catheters, gastrostomies, immune-compromised states, post-cardiac and/or gastrointestinal tract surgery, critically-ill and those requiring prolonged hospitalisation or other conditions that may increase the risks of probiotic associated sepsis * Reacting to the placebo component during the study entry DBPCFC * Have received other food immunotherapy treatment in the preceding 12 months * Currently taking immunomodulatory therapy (including allergen immunotherapy) * Past or current major illness that in the opinion of the Site Investigator may affect the subject's ability to participate in the study e.g. increased risk to the participant * History of suspected or biopsy-confirmed eosinophilic oesophagitis (EoE) * Subjects who in the opinion of the Site Investigator are unable to follow the protocol

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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

  • Department of Paediatrics, Prince of Wales Hospital, The Chinese University of Hong Kong

    Hong Kong, Hong Kong

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