research Investigating Potential Causal Relationships Between Plasma Protein Ratios and Alopecia Areata: A Bidirectional Mendelian Randomization Study
This study found that certain plasma protein ratios, specifically AGRN/HSPG2 and DECR1/FKBP1B, were significantly associated with an increased risk of alopecia areata, indicating potential causal relationships but reverse causality was not supported.

