Skin findings in Williams syndrome

Area of Science:

• Genetics
• Dermatology
• Biomedical Engineering

Background:

• Williams syndrome (Williams-Beuren syndrome) is associated with elastin deficiency, impacting tissue recoil.
• Previous studies noted softer skin and reduced elastin in Williams syndrome but lacked quantitative data.
• No comprehensive dermatologic findings or quantitative elasticity data exist for this population.

Purpose of the Study:

• To quantitatively assess skin elasticity and document dermatologic findings in individuals with Williams syndrome.
• To investigate the relationship between skin elasticity and vascular defects in Williams syndrome.
• To fill the knowledge gap regarding the full spectrum of dermatologic manifestations in Williams syndrome.

Main Methods:

• Recruited 94 patients with Williams syndrome (aged 7-50 years) for the skin and vascular elasticity (WS-SAVE) study.
• Conducted clinical dermatologic assessments by trained dermatologists.
• Measured skin biomechanical properties using the DermaLab™ suction cup device.

Main Results:

• Clinical assessment revealed high prevalence of soft skin (83%), premature graying (80% in those ≥20 years), wrinkles (92%), and abnormal scarring (33%).
• Biomechanical studies showed statistically significant differences in skin elasticity parameters (dP, dT, VE, E) compared to controls.
• No correlation was found between skin biomechanical differences and co-existing vascular defects.

Conclusions:

• Williams syndrome is characterized by widespread dermatologic abnormalities and altered skin biomechanics.
• Elastin insufficiency in Williams syndrome affects skin properties distinctly from vascular manifestations.
• Tissue-specific modifiers likely influence the impact of elastin insufficiency across different body systems.