A pair of genetically altered beagles that don’t trigger allergies in humans are approaching their second birthday, and so far they don’t appear to be suffering from any unintended health conditions.

Add Yahoo as a preferred source to see more of our stories on Google. Gene-edited dogs without Can f 1 allergen showed normal development and produced no detectable major allergen in saliva or dander.

Two beagles born in 2024 carry a genetic change designed to remove Can f 1, the major dog allergen. Early tests found no detectable protein in their saliva or dander, raising a new question about ...