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Acute and early developmental outcomes of children with Duarte galactosemia
Judith L Fridovich-Keil1, Grace Carlock1, Sneh Patel2
1Department of Human Genetics Emory University School of Medicine Atlanta Georgia USA.
Insights
Duarte galactosemia (DG) does not increase risks for infant complications or early developmental issues. Children with DG, regardless of milk consumption, show no increased need for early intervention or special education services.
Area of Science:
- Genetics and Human Development
- Metabolic Disorders
- Pediatric Health
Background:
- Previous research indicated no developmental complications in older children (6-12 years) with Duarte galactosemia (DG).
- Uncertainty remained regarding potential infant acute complications and early childhood developmental challenges in younger children with DG.
Purpose of the Study:
- To investigate if infants with DG face increased risks of acute problems when consuming milk.
- To determine if children with DG under 6 years experience transient developmental challenges.
Main Methods:
- Retrospective analysis of parent/guardian-reported data from 350 children (206 with DG, 144 controls).
- Variables included infant acute complications, early intervention (<3 years), and special education (3-5 years).
- Logistic regression analysis controlled for age, sex, race, income, and parent education.
Main Results:
- No significant differences were found between DG cases and controls for any of the three outcome variables.
- Galactose exposure in infancy did not correlate with different outcomes among DG cases.
- The study found no increased prevalence of acute complications or early developmental challenges requiring intervention.
Conclusions:
- Infants with Duarte galactosemia (DG) are not at increased risk for acute complications when drinking milk.
- Children with DG younger than 6 years do not show increased prevalence of developmental challenges requiring intervention.
- Dietary management (milk vs. low-galactose formula) in infancy does not alter these outcomes for children with DG.
Abstract:
A recent study demonstrated that children with Duarte galactosemia (DG) do not show increased prevalence of detectable developmental complications when 6-12 years old. However, that study left unanswered whether infants with DG might be at increased risk for acute problems when drinking milk or whether children with DG younger than 6 years might show increased prevalence of perhaps transient developmental challenges. Here, we have addressed both of these questions by analyzing parent/guardian-reported data collected retrospectively for 350 children, 206 with DG and 144 unaffected siblings from the same families. The variables analyzed included whether each child had experienced (1) acute complications in infancy, (2) early intervention services when <3 years old, and/or (3) special educational services when 3-5 years old. For each case-control comparison, or case-by-diet comparison, we used logistic regression that included the following potential covariates: age, sex, race, family income, and parent education, as appropriate. We found that none of the three outcome variables tested showed significant differences between cases and controls, or among cases as a function of galactose exposure in infancy. To the limits of our study, we therefore conclude that regardless of whether a child with DG drinks milk or low-galactose formula as an infant, they are not at increased risk for acute complications or early childhood developmental challenges that require intervention.
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