Seckel-like syndrome in three siblings

Area of Science:

• Genetics
• Pediatrics
• Medical Genetics

Background:

• Seckel syndrome is a rare primordial dwarfism characterized by severe intrauterine growth retardation and disproportionate dwarfism.
• Less than 60 cases have been reported, with significant phenotypic variability and debated diagnostic criteria.
• Genetic heterogeneity is implied by the pleiotropic effects observed in affected individuals.

Observation:

• Three siblings from nonconsanguinous Caucasian parents presented with Seckel-like syndrome.
• All affected siblings exhibited typical Seckel phenotypic features, including craniofacial dysmorphism and skeletal defects.
• Severe hydrocephalus was a prominent and consistent feature across all three affected siblings.

Findings:

• The reported cases expand the known phenotypic spectrum of Seckel syndrome.
• The presence of severe hydrocephalus in these siblings suggests it may be a key feature in certain Seckel-like conditions.
• The findings support the hypothesis of a spectrum of Seckel conditions with shared core features and variable expressivity.

Implications:

• Further research is needed to define the genetic basis of Seckel syndrome and its variants.
• Recognizing the spectrum of Seckel conditions can aid in diagnosis and genetic counseling.
• Understanding the phenotypic variability is crucial for accurate diagnosis and management of patients with Seckel syndrome and related disorders.