This study aims to improve our understanding of Cystic Fibrosis Transmembrane Conductance Regulator(CFTR)-related metabolic syndrome(CRMS), a term used for some infants whose newborn screening results suggest they may be at risk for cystic fibrosis but who do not currently meet the criteria for a cystic fibrosis diagnosis. CFTR stands for cystic fibrosis transmembrane conductance regulator and refers to a gene that provides instructions for making a protein that helps control the movement of salt and water in and out of cells. Changes in this gene can increase a person's risk of developing cystic fibrosis or related health concerns.

The study has two goals. First, we will review existing medical records to better understand the health conditions, symptoms, and long-term health of children with CRMS and adults with cystic fibrosis diagnosed later in life who receive care at the Medical University of South Carolina pulmonary clinic. Second, we will survey parents of children with CRMS to better understand how receiving a CRMS designation affects families emotionally and in their daily lives.