A Rare Cause Of Proportional Short Stature and Puberty Precocity: Floating-Harbor Syndrome

Floating-Harbor syndrome is a sporadic autosomal dominantly inherited malformation syndrome characterized by typical craniofacial findings, proportional short stature, significantly delayed bone age, delayed expressive language, delayed speech, and normal head circumference. It is caused by heterozygous mutations in the SNF2-associated CBP activator protein gene (SRCAP) located on chromosome 16. Here, we report 9 years and 4 months old male patient who presented to the pediatric genetics outpatient clinic with retardation in early developmental stages, dysmorphic facial features, and short stature. The patient was diagnosed with Floating-Harbor syndrome with typical facial features and clinical findings. A triangular face, short filtrum, posteriorly rotated ear, deep-set eyes, bulbous nose, prominent columella, and low hairline are unique facial features in the syndrome. He also has short stature, significant retardation in bone age, and retardation in expressive language. Floating-Harbor syndrome should be remembered in the differential diagnosis of patients evaluated for short stature and learning disability with its unique facial features. By reporting a new case of Floating-Harbor syndrome we aimed to expand the clinical and molecular spectrum in this rare syndrome and increase diagnostic awareness for pediatric endocrinology practitioners.