Being allergic to peaches is certainly no fun if you're a fan of the fruit (like a lot of us). No Southern peach cobblers for you either. But c'est la vie, and it's the best thing for you to know if the fruit will bring you great joy or threaten your health (or your life).
In the same study referenced for Shrimp Allergy, the genome-wide association study involving a group of Japanese individuals found a gene locus (specific to peaches) on the HLA-DR/DQ gene that was associated with peach allergy. The HLA (which stands for human leukocyte antigen) genes are important because they have been implicated in food allergy immune responses. It seems that having a certain gene variant at the locus on this gene can predispose you to a nasty reaction whenever you are in contact with the fruit. Here's the link to the full study: https://www.ncbi.nlm.nih.gov/pubmed/29348432
Are your genes rejecting peaches? Check Genomelink to find out if you are susceptible to peach allergy!