Consistent with the recessive mode of inheritance, the de novo paternal Xp22.33p22.2 deletion combined to the maternally inherited CSF2RA gene deletion led to homozygous deletion of CSF2RA and PAP diagnosis in the girl.
Clinical presentation, diagnosis, management and outcome of molecularly defined congenital pulmonary alveolar proteinosis (PAP) due to mutations in the GM-CSF receptor are not well known.