Oculocutaneous manifestations in xeroderma pigmentosa

Area of Science:

• Genetics
• Dermatology
• Ophthalmology

Background:

• Xeroderma pigmentosum (XP) is a rare autosomal recessive disorder characterized by defective DNA repair mechanisms.
• This defect leads to cellular and clinical hypersensitivity to ultraviolet (UV) radiation, significantly increasing cancer risk.
• XP patients often present with a range of oculocutaneous symptoms.

Purpose of the Study:

• To retrospectively analyze the oculocutaneous features observed in a cohort of 10 patients diagnosed with Xeroderma pigmentosum.
• To document the prevalence and types of skin and eye conditions associated with XP in this patient group.

Main Methods:

• Retrospective chart review of 10 patients with Xeroderma pigmentosum.
• Detailed documentation of clinical findings, focusing on both cutaneous and ocular manifestations.
• Analysis of general features including family history and age of onset.

Main Results:

• High prevalence of parental consanguinity (40%) and familial cases (60%).
• Early onset of symptoms (50% within the first 2 years).
• Frequent malignant skin neoplasms (60%) and tongue carcinoma (20%).
• Ocular findings included photophobia (50%), lid freckles/atrophic lesions (100%), lower lid tumors (30%), conjunctival congestion (40%), corneal opacification (40%), limbal squamous cell carcinoma (20%), bilateral pterygium (40%), and visual impairment (50%).

Conclusions:

• Xeroderma pigmentosum presents with a high burden of oculocutaneous disease, including significant risks of skin cancer and severe ocular complications.
• Early diagnosis and comprehensive management of both skin and eye conditions are crucial for improving outcomes in XP patients.
• The study highlights the critical need for awareness and specialized care for individuals with this rare genetic disorder.