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Junctional EB (JEB)

In individuals with Junctional EB (JEB), blisters form between the dermis and epidermis, in the basement membrane zone (BMZ). These blisters occur both on the skin and inside of the body. JEB is caused by mutations in the genes LAMA3, LAMB3, or LAMC3, which hold the instructions to make the protein laminin 332, and the gene COL17A1, which holds the instructions to make the protein collagen 17. There are 2 main subtypes, Herlitz and Non-Herlitz JEB. Herlitz JEB causes severe symptoms and is often fatal in infancy. It is considered the most serious form of the disorder. Non-Herlitz EB causes milder symptoms and individuals with this type have a normal life expectancy.

Life with junctional eb

Meet Ryan: Click on his photo to read about his life with Junctional EB.
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Other EB Subtypes

Click below to learn about the other 3 major subtypes of Epidermolysis Bullosa: EB Simplex, Dystrophic EB, and Kindler Syndrome.
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  • Epidermolysis Bullosa
    • What is EB?
    • Life with EB
    • Resources
  • Research
    • Our Impact
    • Scientific Advisory Board
    • Clinical Trials
    • Community Council
    • Apply for a Grant
  • Get Involved
    • Donate
    • Sponsor
    • EB Active
    • Events >
      • Venture Into Cures
    • The Effect
    • Shop
    • Accelerator Fund
  • Media
    • Press
    • Videos
  • About Us
    • Our Mission
    • Financials
    • Venture Philanthropy
    • Supporter Spotlight
    • Leadership >
      • Board of Directors
      • Staff
      • Founders
  • Donate