Efficacy of corneal squamous cell carcinoma antigen-1 in early infancy in predicting atopic dermatitis and food allergy: A prospective study.

Background: Identification of predictive biomarkers is crucial for formulating preventive interventions and halting the progression of atopic march. Although controversial, the use of accessible markers to predict or detect early onset of atopic diseases is highly desirable. Therefore, this study aimed to investigate whether corneal squamous cell carcinoma antigen-1 (SCCA1) collected from infants can predict the development of atopic dermatitis and food allergy.

Methods: This prospective study enrolled 117 infants aged 2 months (55 female and 62 male infants). The participants were monitored to evaluate the occurrence of eczematous changes at several time points, and stratum corneum samples were obtained. The association of corneal SCCA1 with the development of atopic dermatitis and food allergy in the first 3 years of life was evaluated using univariate and multivariate logistic regression.

Results: The corneal SCCA1 level was significantly higher in children who developed atopic dermatitis than in children who did not (cheek at 2 months: 1653.06 ± 178.48 ng/mg vs. 786.95 ± 101.59 ng/mg, P = 0.0033). The corneal SCCA1 level was also significantly higher in children who developed food allergy than in children who did not (perioral skin at 2 months: 2567.31 ± 408.09 ng/mg vs. 1120.85 ± 188.49 ng/mg, P = 0.0018).

Conclusions: The findings suggest that non-invasive measurements of corneal SCCA1 at 2 months of age is useful for predicting atopic dermatitis and food allergy in infants at risk for atopic dermatitis and subsequent food allergy.