Lack of association between seroconversion and catch-up growth in children with celiac disease

Area of Science:

• Pediatric Gastroenterology
• Celiac Disease Research
• Nutritional Science

Background:

• Celiac disease (CD) requires a strict gluten-free diet (GFD) for management.
• Catch-up growth is a critical indicator of treatment efficacy in pediatric CD.
• The role of seroconversion in modulating growth during GFD initiation is not fully understood.

Purpose of the Study:

• To evaluate the association between seroconversion and catch-up growth in children with celiac disease during the first year on a GFD.
• To determine the timing and extent of growth improvements in relation to serological status.

Main Methods:

• Retrospective study of 55 prepubertal children with biopsy-proven celiac disease.
• Growth parameters and celiac antibodies were tracked at baseline, 6 months, and 12 months after initiating a GFD.
• Statistical analysis compared growth velocity and weight gain between different time points and serological groups.

Main Results:

• Children with celiac disease exhibited significantly higher mean height velocity-standard deviation score (SDS) in the first 6 months of GFD compared to the subsequent 6 months (p<0.001).
• Both seropositive and seronegative patients showed significant improvements in height-SDS and weight-SDS after 6 months of GFD compared to baseline.
• While growth parameters improved from baseline to 12 months in both groups, this improvement was only statistically significant in seropositive patients during the second 6-month period.

Conclusions:

• The most substantial catch-up growth in pediatric celiac disease occurs within the initial 6 months of adhering to a gluten-free diet.
• This initial growth spurt is independent of the patient's serological status (seroconversion).
• Continued monitoring of growth is essential, especially in seropositive children, beyond the first six months of GFD.