Extended Growth Curves for the Wolf-Hirschhorn Syndrome (4p-)

Area of Science:

• Genetics
• Pediatrics
• Endocrinology

Background:

• Wolf-Hirschhorn syndrome (WHS) is a rare genetic disorder caused by deletions on chromosome 4p.
• WHS is characterized by prenatal growth restriction, developmental delays, and distinctive facial features.
• Existing growth charts for WHS lack comprehensive data, especially through puberty.

Purpose of the Study:

• To establish detailed growth charts for individuals with Wolf-Hirschhorn syndrome.
• To provide updated length/height, weight, and occipitofrontal circumference data from birth to adulthood.
• To analyze growth patterns, including pubertal development and final adult height.

Main Methods:

• Collected anthropometric data (length/height, weight, occipitofrontal circumference) from 65 WHS patients.
• Generated growth curves for length/height (birth to 18 years) and weight (birth to 18 years).
• Developed occipitofrontal circumference curves from birth to 2 years.

Main Results:

• Individuals with WHS are generally smaller than the general population across all parameters.
• A near-absent pubertal growth spurt was observed in the WHS cohort.
• A higher than expected number of individuals fell within the typical growth range, despite overall smaller stature.

Conclusions:

• The new growth charts provide valuable data for monitoring growth in WHS patients.
• Findings highlight unique growth patterns, including diminished pubertal acceleration and final adult height considerations.
• Syndrome-specific growth charts are crucial for accurate clinical assessment in WHS.