Children with cystic fibrosis are still receiving inconclusive diagnosis despite undergoing newborn screening

Ioanna Loukou1, Maria Moustaki1, Konstantinos Douros2

  • 1Cystic Fibrosis Department, Agia Sofia Children's Hospital, Athens, Greece.

Insights

Cystic fibrosis transmembrane conductance regulator related metabolic syndrome (CRMS) and cystic fibrosis screen positive inconclusive diagnosis (CFSPID) require regular monitoring. While many children remain healthy, some may develop cystic fibrosis, necessitating ongoing clinical attention.

Area of Science:

  • Pediatrics
  • Genetics
  • Metabolic Disorders

Background:

  • Newborn screening for cystic fibrosis (CF) can result in uncertain diagnoses.
  • Elevated immunoreactive trypsinogen levels in newborns necessitate further evaluation.
  • The unified definition for CRMS/CFSPID was established in 2016 to categorize these infants.

Purpose of the Study:

  • To familiarize clinicians with CRMS/CFSPID terminology.
  • To highlight the monitoring and outcomes for children with CRMS/CFSPID.
  • To emphasize the importance of regular follow-up for these infants.

Main Methods:

  • A comprehensive literature review was conducted.
  • PubMed database was searched from inception until November 30, 2022.
  • A narrative review approach was employed, including all relevant articles.

Main Results:

  • CRMS/CFSPID designation applies to infants with uncertain CF diagnosis post-newborn screening.
  • A portion of these children may progress to develop CF.
  • Regular monitoring is crucial for identifying potential CF development.

Conclusions:

  • CRMS/CFSPID is a classification, not a definitive diagnosis.
  • Longitudinal studies are needed to determine optimal follow-up strategies.
  • Pediatrician awareness and CF center contact are vital for proper care.
Abstract

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