Related Experiment Video
Updated: May 6, 2026
Technique of Conjunctival Biopsy and Direct Immunofluorescence for Diagnosing Mucous Membrane Pemphigoid
Published on: June 17, 2025
Anti-laminin-332 mucous membrane pemphigoid in a 9-year old girl
Estelle Kahn1, Allyson Spence Shishido, Kim B Yancey
1Department of Dermatology, Emory University Hospital, Atlanta, Georgia.
Abstract:
Mucous membrane pemphigoid (MMP), an autoimmune subepithelial blistering disease that predominantly affects the mucous membranes, is usually diagnosed in elderly adults. Early diagnosis of MMP is crucial because it tends to run a chronic and progressive course with the potential for devastating scarring of the mucous membranes that may lead to blindness and airway compromise. A subtype of MMP, anti-laminin-332 MMP, is a rare blistering disorder in which autoantibodies are directed against laminin-332 (formerly epiligrin), a structural protein of the epidermal basement membrane. Herein we report what we believe to be the youngest patient diagnosed with anti-laminin-332 MMP, a 9-year-old girl with disease affecting only the oral, pharyngeal, and laryngeal mucosa, with no skin involvement.
Insights
This study reports the youngest patient diagnosed with anti-laminin-332 mucous membrane pemphigoid (MMP), a rare autoimmune blistering disease. Early diagnosis is critical for this condition, which can cause severe scarring.
Area of Science:
- Autoimmune blistering diseases
- Dermatology
- Immunology
Background:
- Mucous membrane pemphigoid (MMP) is a rare autoimmune subepithelial blistering disease.
- It predominantly affects mucous membranes and is typically diagnosed in elderly adults.
- Early diagnosis is crucial due to the potential for chronic progression and severe scarring.
Observation:
- A rare subtype, anti-laminin-332 MMP, involves autoantibodies against laminin-332, a basement membrane protein.
- This report details the youngest patient diagnosed with anti-laminin-332 MMP.
- The patient was a 9-year-old girl with oral, pharyngeal, and laryngeal mucosal involvement only.
Findings:
- The case represents the youngest documented patient with anti-laminin-332 MMP.
- Disease presentation was limited to the oral, pharyngeal, and laryngeal mucosa, with no skin lesions.
- This finding expands the known age range and clinical presentation spectrum of this rare disorder.
Implications:
- Highlights the importance of considering anti-laminin-332 MMP in pediatric patients with unexplained mucosal blistering.
- Suggests that mucosal-exclusive disease can occur in younger individuals.
- Emphasizes the need for further research into the pathogenesis and early diagnostic markers for anti-laminin-332 MMP across all age groups.
