(THE ASSOCIATED PRESS)

Peanut allergies: Research shows ‘oral immunotherapy’ is safe for preschoolers

Child eats small amounts of an allergenic food, dose gradually boosted to target maintenance amount

“We don’t have to live in fear anymore.”

That’s the common refrain from hundreds of parents of preschoolers with peanut allergy that my colleagues and I have successfully treated with peanut “oral immunotherapy” over the past two years.

Oral immunotherapy (OIT) is a treatment in which a patient consumes small amounts of an allergenic food, such as peanut, with the dose gradually increased to a target maximum (or maintenance) amount. The goal for most parents is to achieve desensitization — so their child can ingest more of the food without triggering a dangerous reaction, protecting them against accidental exposure.

A recent study published in The Lancet has suggested that this treatment may make things worse for children with peanut allergies. The researchers behind the meta-analysis argue that children with peanut allergies should avoid peanuts.

This study has limitations however. It did not include a single child under the age of five years old. And it runs the risk of confusing parents.

My colleagues and I have seen firsthand that oral immunotherapy is not only safe, but is well tolerated in a large group of preschool children. We published data demonstrating this recently in the Journal of Allergy and Clinical Immunology: In Practice.

READ MORE: Study finds peanut allergy treatment safe for allergists to use with young kids

Safe for preschoolers

For any parent of a child with severe allergy, the idea of giving them even a small amount of the allergenic food might give them pause. I don’t blame them — giving a child a known allergen is a daunting thought. Some allergists share this fear and do not offer OIT to patients in their clinics due to safety concerns.

To assess the safety of oral immunotherapy, we followed 270 children across Canada between the ages of nine months and five years who were diagnosed with peanut allergy by an allergist.

The children were fed a peanut dose, in a hospital or clinic, that gradually increased at every visit. Parents also gave children the same daily dose at home, between clinic visits, until they reached the maintenance dose.

We found that 243 children (90 per cent) reached the maintenance stage successfully. Only 0.4 per cent of children experienced a severe allergic reaction.

Out of over 40,000 peanut doses, only 12 went on to receive epinephrine (0.03 per cent).

Our research provides the first real-world data that OIT is safe for preschool-aged children with peanut allergy when offered as routine treatment in a hospital or clinic, rather than within a clinical trial.

The Lancet study was of older children

So why does the meta-analysis published in The Lancet show that peanut OIT increases allergic reactions, compared with avoidance or placebo?

The researchers behind this study argue that avoidance of peanut is best for children with peanut allergy. They describe that in older children, the risk of anaphylaxis is 22.2 per cent and the risk of serious adverse events is 11.9 per cent.

It is important for parents to note that The Lancet study only assessed children aged five and older participating in clinical trials (average age nine years old), and the researchers don’t even mention this as a limitation of their analysis.

Our study, on the other hand, assessed preschool children (average age just under two years old) in the real world outside of research.

While I agree that there are certainly more safety concerns in older children, and more research is needed to see which of them would most benefit, our results demonstrate with real-world data that, in preschoolers, OIT is a game-changer.

For many patients, benefits outweigh risks

It isn’t rocket science that avoiding what one is allergic to will be safer than eating it.

An analogy is knee replacement surgery. Of course, not having knee replacement surgery would be “safer” than having the surgery. But not having knee replacement surgery doesn’t provide any potential of benefits and also provides little hope for families.

Likewise, telling parents of children with peanut allergy that avoidance is the only option outside research fails to take into account the negative long-term consequences of avoidance — such as poor quality of life, social isolation and anxiety.

Allergists and the medical community as a whole must stop confusing parents with endless mixed messages about OIT both within and outside of research. The fact is, many allergists are already offering OIT outside of research. In our current era of basing medical treatment decisions on a comparison of risks versus benefits, there is simply no one-size-fits-all approach.

Rather than concluding that all children with peanut allergy should be managed with avoidance, we should be concluding that there are some patients, such as preschoolers, for whom the benefits of offering this treatment outweigh the risks. OIT has proven to be effective in many studies, and we will similarly follow the progress of our patients long term to track effectiveness.

The bottom line is this: OIT is safe for preschool children and should be considered for families of those very young children with peanut allergy who ask for it.

___

Edmond Chan, Pediatric Allergist; Head & Clinical Associate Professor, Division of Allergy & Immunology, Department of Pediatrics, Faculty of Medicine; Investigator, BC Children’s Hospital Research Institute, University of British Columbia

This article is republished from The Conversation under a Creative Commons license. Disclosure information is available on the original site. Read the original article here.

The Canadian Press

Like us on Facebook and follow us on Twitter

Just Posted

Driver charged in Central Saanich pedestrian’s death appears in court

Victim Kim Ward, 51, died on scene at the August 2018 crash

Second puppy killed by poisonous mushrooms in Victoria

Springer spaniel puppy died after consuming mushrooms in Fairfield neighbourhood

Western Speedway racing legend ‘The Flying Plumber’ turns 98

Dave Cooper recalls car crashes, his first win, and more

Nuisance tree will remain on perimeter of Fireman’s Park

Council re-affirm pledge to protecting healthy tree canopy

Central Saanich hosts NEAT program to help seniors connect with each other

Health promotion program aims to reduce social isolation among seniors

WATCH: Greater Victoria’s top stories of the day

A round-up of the day’s top stories

POLL: Do you think the day of the federal election should be a statutory holiday?

Increasing voter turnout has long been a goal of officials across the… Continue reading

Woman, 24, faces life-altering injuries after being dragged 4 blocks by vehicle in Vancouver

A gofundme account says the woman will have to undergo multiple complex surgeries

Fatal overdoses down by 33% in B.C., but carfentanil deaths continue to spike

Carfentanil, an illicit drug more powerful than fentanyl, causing more deaths than ever

Two RCMP vehicles vandalized in Duncan over long weekend

Local Mounties asking for help in finding culprits

A year after pot legalization in Canada, it’s a slow roll

It’s one year into Canada’s experiment in legal marijuana, and hundreds of legal pot shops have opened

ELECTION 2019: Climate strikes push environment to top of mind for federal leaders

Black Press Media presents a three-part series on three big election issues

Most Read