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Allergies Health Center

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New Hope for Kids With Peanut Allergies

Experimental therapy increased tolerance, but much more testing needed, doctors say

WebMD News from HealthDay

By Steven Reinberg

HealthDay Reporter

THURSDAY, Jan. 30, 2014 (HealthDay News) -- For children and teens with peanut allergies, a new type of treatment might be a step closer to becoming a reality, according to a preliminary study from England.

The treatment, known as oral immunotherapy, involves eating small amounts of peanut protein, gradually increasing the amount in hopes of building up a tolerance to peanuts.

After six months of immunotherapy, 84 percent to 91 percent of children in the study could safely eat about five peanuts a day -- about 25 times more than they could tolerate before the therapy, the researchers found.

"Oral immunotherapy has once again shown promise that it may eventually be a treatment for food allergy," said Dr. Matthew Greenhawt, author of an editorial accompanying the study, which was published in the Jan. 30 issue of the journal The Lancet. "But it is still far from being ready for use outside of a research setting.

"There is much work to be done to thoroughly investigate the potential -- both good and bad -- of what oral immunotherapy can achieve," added Greenhawt, an assistant professor at the University of Michigan Food Allergy Center. "But study results like these are encouraging that we may be able to develop a future treatment for food allergy."

Greenhawt said there still are a lot of unknowns, including why this therapy works, which patients will benefit most and what the long-term side effects might be.

Dr. Gloria Riefkohl, a pediatrician at Miami Children's Hospital, echoed Greenhawt's comments.

"I think this is an interesting concept that needs further study," she said. "It's not going to work for all the patients we are seeing. And I don't think it's ready for use in the general population."

Right now, children with peanut allergies are prescribed epinephrine in the form of an injectable measured dose called an epinephrine pen, or EpiPen, which they carry with them at all times, Riefkohl said. Epinephrine is able to quickly counter anaphylaxis, a life-threatening allergic reaction.

Riefkohl said the new, experimental therapy isn't going to cure a peanut allergy or let these children indulge in a peanut butter sandwich. "What we are trying to decrease is the exposure that usually occurs accidentally and causes difficulty breathing or a rash or tickling in the mouth," she said.

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