Early Life Disease Burden and Outcomes in Children Diagnosed With Primary Ciliary Dyskinesia in Infancy

Madhan Kumar1, Dvir Gatt2,3, Zofia Zysman-Colman1

  • 1Montreal Children's Hospital, McGill University Health Centre, Montreal, Quebec, Canada.

Insights

Early diagnosis of primary ciliary dyskinesia (PCD) in infants is crucial. Despite early interventions like airway clearance, children face significant respiratory and hearing issues, highlighting the need for ongoing care and further research on therapies like inhaled hypertonic saline.

Area of Science:

  • Pediatric Pulmonology
  • Rare Genetic Disorders
  • Clinical Outcomes Research

Background:

  • Primary ciliary dyskinesia (PCD) is a rare genetic disorder causing chronic oto-sino-pulmonary disease from birth.
  • Delayed diagnosis is common, leading to poorly understood early-life disease burdens.

Purpose of the Study:

  • To analyze early disease burdens and long-term outcomes in infants diagnosed with PCD near birth.
  • To evaluate the impact of early interventions and therapies on disease progression.

Main Methods:

  • Retrospective analysis of disease burdens until age 2 and outcomes at ages 6-7 in infants diagnosed with PCD near birth.
  • Data collected from two Canadian PCD centers.

Main Results:

  • Thirty-five infants (median diagnostic age 34 days) were included; all received chest physiotherapy.
  • By age 2, high rates of respiratory exacerbations (66% outpatient, 29% inpatient), ER visits (60%), and abnormal audiology (91%) were observed.
  • Early inhaled hypertonic saline (IHS) use was associated with less Pseudomonas aeruginosa but more inpatient exacerbations, suggesting a complex effect.

Conclusions:

  • Infants with PCD experience significant respiratory infections and clinical care burdens even with early diagnosis and treatment.
  • A high risk of hearing loss necessitates universal screening and close follow-up.
  • The role of inhaled hypertonic saline in early Pseudomonas acquisition and hospitalization requires further investigation through prospective studies.
Abstract

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