Is HLA-DQ2 useful for Haut?

HLA-DQA1 is a gene included in MyBody-X DNA tests and is primarily associated with celiac disease (gluten intolerance). Celiac disease can manifest with skin symptoms such as dermatitis herpetiformis, an intensely itchy, blistering skin condition. Therefore, HLA-DQA1 can be indirectly useful for skin (Haut) if there is suspicion of celiac-related skin issues. However, the test is not a direct skin test – it does not measure general skin health, eczema, or acne. The evidence linking HLA-DQA1 to skin symptoms is mechanistic and supported by clinical observations, but it is not validated as a standalone skin marker. A positive finding (e.g., DQ2.5/DQ8) increases the risk for celiac disease, which may present with skin manifestations, but does not guarantee skin problems. For specific skin conditions, other genetic and environmental factors are more relevant. Caveat: This test does not replace medical evaluation for skin complaints.