Prophylactic Peanut Allergen Ara h 6 Sublingual Immunotherapy Drives Expansion of FoxP3⁺Helios⁻ Regulatory T Cells in the Absence of Allergen-Specific IgA

Prophylactic Ara h 6 SLIT drove the relative expansion of induced Helios⁻ Treg cells in the absence of Ara h 6-specific IgA highlighting a potential novel IgA-independent Treg-related immune response at the sublingual mucosal site.