Congenital Proprotein Convertase 1/3 Deficiency Causes Malabsorptive Diarrhea and Other Endocrinopathies in a Pediatric Cohort

In a study of 13 children with PC1/3 deficiency caused by disruption of PCSK1, failure of enteroendocrine cells to produce functional hormones resulted in generalized malabsorption. These findings indicate that PC1/3 is involved in the processing of one or more enteric hormones that are required for nutrient absorption.