Lung function trajectories from birth through puberty reflect asthma phenotypes with allergic comorbidity

Area of Science:

• Pediatric Pulmonology
• Allergy and Immunology
• Developmental Pediatrics

Background:

• Childhood asthma phenotypes are poorly understood, especially concerning allergic comorbidities.
• Identifying developmental trajectories is crucial for understanding asthma.
• Limited data exists on asthma phenotypes linked to allergic rhinitis and atopic dermatitis.

Purpose of the Study:

• To investigate the association between lung function trajectories from birth to 16 years and asthma phenotypes.
• To examine asthma phenotypes characterized by comorbid allergic rhinitis and atopic dermatitis.

Main Methods:

• Lung function was measured at birth, 10, and 16 years in a birth cohort (n=329).
• Asthma phenotypes were defined by bronchial obstruction and asthma diagnosis, considering comorbidities like atopic dermatitis and allergic rhinitis.
• Comparison was made to a reference group without asthma.

Main Results:

• Significant differences in lung function trajectories (FEV1, FEF25-75, FEV1/FVC) were observed for asthma comorbidity phenotypes (P < .0001).
• Impaired lung function from birth to 16 years was noted in children with asthma, atopic dermatitis, and allergic rhinitis.
• Allergic sensitization did not significantly influence these lung function trajectories.

Conclusions:

• Impaired lung function in children with asthma, eczema, and allergic rhinitis from birth suggests potential in utero origins.
• The findings indicate that allergic sensitization may not be the primary driver for this specific asthma trajectory.
• Early onset disease, possibly prenatal, is implied for this phenotype presenting later in childhood.