MOLECULAR GENETICS AND METABOLISM REPORTS, vol.29, 2021 (SCI-Expanded)
Introduction: Current clinical outcome assessments (COAs) are not effectively capturing the complex array of symptoms of adults with phenylketonuria (PKU). This study aimed to identify concepts of interest relevant to adults with PKU. Based on these concepts, COAs for patient-reported outcomes (PROs), observer-reported out-comes (ObsROs), and clinician-reported outcomes (ClinROs) were selected or developed and content validity was assessed.