Blood counts in children with Down syndrome

Area of Science:

• Pediatric Hematology
• Genetics
• Immunology

Background:

• Children with Down syndrome (DS) exhibit higher rates of hematologic and immunologic abnormalities.
• Established normal ranges for complete blood counts (CBCs) in pediatric DS patients are lacking.
• Accurate reference ranges are crucial for diagnosing and managing potential health issues in children with DS.

Purpose of the Study:

• To establish age-related reference ranges for complete blood counts (CBCs) in healthy pediatric patients with Down syndrome (DS).
• To provide a valuable resource for clinicians evaluating CBC results in children with DS.
• To identify significant differences in blood count parameters between children with and without DS.

Main Methods:

• Retrospective analysis of CBC data from 355 healthy pediatric patients with DS (2011-2017).
• Inclusion of control data from 770 healthy pediatric patients without DS.
• Statistical analyses including Kruskal-Wallis H tests, nested ANOVA, and t-tests were employed.

Main Results:

• Age-specific normative curves (2.5th-97.5th percentiles) were generated for various CBC parameters.
• Parameters included white blood cell count, hemoglobin, hematocrit, MCV, and platelet counts.
• Significant statistical differences were observed in multiple blood counts between children with and without DS.

Conclusions:

• Patients with Down syndrome exhibit different reference ranges for multiple blood counts compared to their peers without DS.
• This study provides essential new reference data for pediatricians managing children with DS.
• The findings support the need for DS-specific CBC reference ranges in clinical practice.