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Dominant dystrophic epidermolysis bullosa


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Other Names:
Dominant dystrophic epidermolysis bullosa, generalized; DDEB, generalized; DDEB-gen; Dominant dystrophic epidermolysis bullosa, generalized; DDEB, generalized; DDEB-gen; Epidermolysis bullosa dystrophica, autosomal dominant; Dystrophic epidermolysis bullosa, autosomal dominant; Epidermolysis bullosa dystrophica, Cockayne-Touraine type (formerly); Epidermolysis bullosa dystrophica, Pasini type (formerly); Autosomal dominant dystrophic epidermolysis bullosa, Pasini and Cockayne-Touraine types; DDEB, Pasini and Cockayne-Touraine types; Generalized dominant dystrophic epidermolysis bullosa See More
Categories:
Congenital and Genetic Diseases; Skin Diseases
This disease is grouped under:
Dystrophic epidermolysis bullosa; Epidermolysis bullosa

Summary Summary


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Dominant dystrophic epidermolysis bullosa (DDEB) is a type of epidermolysis bullosa (EB), which is a group of rare inherited conditions in which the skin blisters extremely easily. DDEB is one of the milder forms of EB, although the severity is variable. Blisters may be present at birth, but typically appear during early childhood; occasionally they do not develop until later in life. Blisters often become more numerous and tend to occur over vulnerable sites such as knees, ankles, elbows and knuckles.[1] In adulthood, they usually become less frequent and scars fade. Other signs and symptoms of DDEB may include dystrophic or absent nails,[2] constipation, dental caries and swallowing problems.[1] It is caused by mutations in the COL7A1 gene and is inherited in an autosomal dominant manner.[3] Treatment typically includes treating blisters and avoiding infection.[1]
Last updated: 4/7/2016

Symptoms Symptoms


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Dominant dystrophic epidermolysis bullosa (DDEB) is consivered to be a more mild form of dystrophic epidermolysis bullosa (DEB). Blistering is often limited to the hands, feet, knees, and elbows. Blistering may be relatively benign, but still heals with scarring and milia. Dystrophic nails, especially toenails, are common and loss of nails may occur. In the mildest forms, dystrophic nails may be the only characteristic noted. Blistering in DDEB often improves somewhat with age.[4][5]
Last updated: 4/8/2016

This table lists symptoms that people with this disease may have. For most diseases, symptoms will vary from person to person. People with the same disease may not have all the symptoms listed. This information comes from a database called the Human Phenotype Ontology (HPO) . The HPO collects information on symptoms that have been described in medical resources. The HPO is updated regularly. Use the HPO ID to access more in-depth information about a symptom.

Showing of 17 |
Medical Terms Other Names
Learn More:
HPO ID
30%-79% of people have these symptoms
Acral blistering 0031045
Dystrophic toenail
Poor toenail formation
0001810
Fragile skin
Skin fragility
0001030
Milia
Milk spot
0001056
5%-29% of people have these symptoms
Absent fingernail 0001817
Absent toenail 0001802
Atrophic scars
Sunken or indented skin due to damage
0001075
Dystrophic fingernails
Poor fingernail formation
0008391
Erosion of oral mucosa 0031446
Oral mucosal blisters
Blisters of mouth
0200097
Recurrent loss of toenails and fingernails
Recurrent shedding of toenails and fingernails
0008390
Skin erosion 0200041
Percent of people who have these symptoms is not available through HPO
Abnormal blistering of the skin
Blistering, generalized
Blisters
[ more ]
0008066
Autosomal dominant inheritance 0000006
Congenital onset
Symptoms present at birth
0003577
Nail dysplasia
Atypical nail growth
0002164
Nail dystrophy
Poor nail formation
0008404
Showing of 17 |
Do you have more information about symptoms of this disease? We want to hear from you.
Last updated: 2/1/2021
Do you have updated information on this disease? We want to hear from you.

Cause Cause


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Dominant dystrophic epidermolysis bullosa (DDEB) is caused by mutations in the COL7A1 gene. The COL7A1 gene provides instructions for making a protein that is used to assemble type VII collagen. Collagen gives structure and strength to connective tissues, such as skin, tendons, and ligaments, throughout the body.

Type VII collagen plays an important role in strengthening and stabilizing the skin. It is the main component of structures called anchoring fibrils, which anchor the top layer of skin, called the epidermis, to an underlying layer called the dermis.

COL7A1 mutations alter the structure or disrupt the production of type VII collagen, which impairs its ability to help connect the epidermis to the dermis. When type VII collagen is abnormal or missing, friction or other minor trauma can cause the two skin layers to separate. This separation leads to the formation of blisters, which can cause extensive scarring as they heal.[6][7]

A diagram of the skin structure including the area of skin implicated in DDEB is provided by the National Institute of Arthritis and Musculoskeletal and Skin Diseases. Click on the link for more. 
Last updated: 4/6/2016

Inheritance Inheritance


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Dominant dystrophic epidermolysis bullosa (DDEB) has an autosomal dominant pattern of inheritance. Autosomal dominant inheritance means that one copy of the gene with the mutation in each cell is sufficient to cause the disorder. About 70 percent of individuals with DDEB have inherited a COL7A1 mutation from an affected parent. The remaining 30 percent have the condition as a result of a new (de novo) mutation in the COL7A1 gene. These cases occur in people with no history of the disorder in their family. Regardless of whether an individual with an autosomal dominant condition has inherited the mutation or has a new mutation, each child of the affected individual has a 50% (1 in 2) chance of also having the condition, and a 50% chance of not having the condition.[8]
Last updated: 4/7/2016

Diagnosis Diagnosis


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Making a diagnosis for a genetic or rare disease can often be challenging. Healthcare professionals typically look at a person’s medical history, symptoms, physical exam, and laboratory test results in order to make a diagnosis. The following resources provide information relating to diagnosis and testing for this condition. If you have questions about getting a diagnosis, you should contact a healthcare professional.

Testing Resources

  • The Genetic Testing Registry (GTR) provides information about the genetic tests for this condition. The intended audience for the GTR is health care providers and researchers. Patients and consumers with specific questions about a genetic test should contact a health care provider or a genetics professional.

Treatment Treatment


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There is currently no cure for all types of dystrophic epidermolysis bullosa (DEB). Treatment generally focuses on managing signs and symptoms. For some individuals, such as those that have a mild form of dominant dystrophic epidermolysis bullosa (DDEB), dystrophic nails may be the only manifestation. However, other individuals may have much more severe problems that need to be managed. Management typically focuses on treating blisters and avoiding or treating infections.[4]

Wound care usually included treatment of new blisters by lancing and draining. Additionally in most cases, wounds are then dressed with a non-adherent material, covered with padding for stability and protection, and secured with an elastic wrap for integrity. Due to the increased risk of bacterial resistance, topical antibiotic ointments and antimicrobial dressings should be reserved for those wounds that are colonized with bacteria and fail to heal, referred to as “critical colonization."[4][5]

Individuals with epidermolysis bullosa (EB) have increased caloric and protein needs due to the increased energy utilized in wound healing. Involvement of the digestive system in some forms of EB may limit nutritional intake. Infants and children with more severe forms of EB and failure to thrive usually require attention to fluid and electrolyte balance and may require nutritional support, including a gastrotomy feeding tube. Anemia is typically treated with iron supplements and transfusions as needed. Other nutritional supplements may include calcium, vitamin D, selenium, carnitine, and zinc.[4][5]

Surveillance is important for individuals with DEB. Biopsies of abnormal-appearing wounds that do not heal may be recommended in some types of DEB due to predisposition to squamous cell carcinoma, beginning in the second decade of life. Screening for deficiencies of iron, zinc, vitamin D, selenium, and carnitine is typically recommended after the first year of life. Routine echocardiograms are recommended to identify dilated cardiomyopathy, and bone mineral density studies are recommended to identify osteoporosis. Activities and bandages that may traumatize the skin (including all adhesives) should typically be avoided.[4]

Recent treatment advancements and therapies under investigation include but are not limited to[4][5][9]: 
  • Use of biological dressings to treat chronic or recurrent skin ulcers
  • Bone marrow transplantation
  • Intra-dermal (in the skin) injection of fibroblasts
  • Protein replacement therapy (intra-dermal injection of type VII collagen) 
  • Gene therapy
  • Revertant mosaicism
  • Gene correction technologies (ex. CRISPR)
DEBRA International has developed clinical practice guidelines for different aspects of treating EB including wound care and pain management. Click on the link to see their completed guidelines. 
Last updated: 4/8/2016

Management Guidelines

  • DebRA International has developed clinical practice guidelines for epidermolysis bullosa which provide recommendations for clinical care. These clinical guidelines are for patients as well as healthcare professionals.

Find a Specialist Find a Specialist


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If you need medical advice, you can look for doctors or other healthcare professionals who have experience with this disease. You may find these specialists through advocacy organizations, clinical trials, or articles published in medical journals. You may also want to contact a university or tertiary medical center in your area, because these centers tend to see more complex cases and have the latest technology and treatments.

If you can’t find a specialist in your local area, try contacting national or international specialists. They may be able to refer you to someone they know through conferences or research efforts. Some specialists may be willing to consult with you or your local doctors over the phone or by email if you can't travel to them for care.

You can find more tips in our guide, How to Find a Disease Specialist. We also encourage you to explore the rest of this page to find resources that can help you find specialists.

Healthcare Resources

  • The Dystrophic Epidermolysis Bullosa Research Association of America, Inc. (DEBRA) offers a National Physician Referral Service that connects people suffering with epidermolysis bullosa to qualified and knowledgeable health care professionals in their communities. Click on the link above to learn more about this and other services offered by the DEBRA.
  • To find a medical professional who specializes in genetics, you can ask your doctor for a referral or you can search for one yourself. Online directories are provided by the American College of Medical Genetics and the National Society of Genetic Counselors. If you need additional help, contact a GARD Information Specialist. You can also learn more about genetic consultations from MedlinePlus Genetics.

Related Diseases Related Diseases


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Related diseases are conditions that have similar signs and symptoms. A health care provider may consider these conditions in the table below when making a diagnosis. Please note that the table may not include all the possible conditions related to this disease.

Conditions with similar signs and symptoms from Orphanet
The differential diagnosis includes other forms of EB. In the neonatal period aplasia cutis congenita, herpes simplex infection, bullous impetigo, incontinentia pigmenti, linear IgA bullous dermatosis, bullous pemphigoid (see these terms) may need to be considered.
Visit the Orphanet disease page for more information.

Research Research


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Research helps us better understand diseases and can lead to advances in diagnosis and treatment. This section provides resources to help you learn about medical research and ways to get involved.

Patient Registry

  • A registry supports research by collecting of information about patients that share something in common, such as being diagnosed with Dominant dystrophic epidermolysis bullosa. The type of data collected can vary from registry to registry and is based on the goals and purpose of that registry. Some registries collect contact information while others collect more detailed medical information. Learn more about registries.

    Registries for Dominant dystrophic epidermolysis bullosa:
    EBCare Registry
     

Organizations Organizations


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Support and advocacy groups can help you connect with other patients and families, and they can provide valuable services. Many develop patient-centered information and are the driving force behind research for better treatments and possible cures. They can direct you to research, resources, and services. Many organizations also have experts who serve as medical advisors or provide lists of doctors/clinics. Visit the group’s website or contact them to learn about the services they offer. Inclusion on this list is not an endorsement by GARD.

Organizations Supporting this Disease

  • DebRA International
    Am Heumarkt 27/3
    1030 Vienna
    Austria
    Telephone: +43 1 876 40 30-0
    Fax: +43 1 876 40 30-30
    E-mail: office@debra-international.org
    Website: http://www.debra-international.org/
  • Dystrophic Epidermolysis Bullosa Research Association of America (DEBRA of America)
    75 Broad Street
    Suite 300
    New York, NY 10004
    Toll-free: 855-CURE-4-EB
    Telephone: 212-868-1573
    Fax: 212-868-9296
    E-mail: staff@debra.org
    Website: http://www.debra.org
  • Epidermolysis Bullosa Center
    The EB Center
    Cincinnati Children's Hospital Medical Center
    MLD 3004
    3333 Burnet Avenue
    Cincinnati, OH 45229-3039
    Telephone: 513-636-2009
    E-mail: ebcenter@cchmc.org
    Website: https://www.cincinnatichildrens.org/service/e/epidermolysis-bullosa
  • Epidermolysis Bullosa Medical Research Foundation (EBMRF)
    2757 Anchor Ave
    Los Angeles, CA 90064
    Telephone: +1-310-205-5119
    E-mail: a.pett@bep-la.com
    Website: https://ebmrf.org/

Social Networking Websites

  • RareConnect is an online social network for patients and families to connect with one another and share their experience living with a rare disease. The project is a joint collaboration between EURORDIS (European Rare Disease Organisation) and NORD (National Organization for Rare Disorders). Click on the link above to view the community for Epidermolysis bullosa.
Do you know of an organization? We want to hear from you.

Learn More Learn More


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These resources provide more information about this condition or associated symptoms. The in-depth resources contain medical and scientific language that may be hard to understand. You may want to review these resources with a medical professional.

Where to Start

  • MedlinePlus was designed by the National Library of Medicine to help you research your health questions, and it provides more information about this topic.
  • Genetics Home Reference (GHR) contains information on Dominant dystrophic epidermolysis bullosa. This website is maintained by the National Library of Medicine.
  • The National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS) support research into the causes, treatment, and prevention of arthritis and musculoskeletal and skin diseases, the training of basic and clinical scientists to carry out this research, and the dissemination of information on research progress in these diseases. Click on the link to view information on this topic.
  • The National Organization for Rare Disorders (NORD) has a report for patients and families about this condition. NORD is a patient advocacy organization for individuals with rare diseases and the organizations that serve them.

In-Depth Information

  • GeneReviews provides current, expert-authored, peer-reviewed, full-text articles describing the application of genetic testing to the diagnosis, management, and genetic counseling of patients with specific inherited conditions.
  • Medscape Reference provides information on this topic. You may need to register to view the medical textbook, but registration is free.
  • The Monarch Initiative brings together data about this condition from humans and other species to help physicians and biomedical researchers. Monarch’s tools are designed to make it easier to compare the signs and symptoms (phenotypes) of different diseases and discover common features. This initiative is a collaboration between several academic institutions across the world and is funded by the National Institutes of Health. Visit the website to explore the biology of this condition.
  • Online Mendelian Inheritance in Man (OMIM) is a catalog of human genes and genetic disorders. Each entry has a summary of related medical articles. It is meant for health care professionals and researchers. OMIM is maintained by Johns Hopkins University School of Medicine. 
  • Orphanet is a European reference portal for information on rare diseases and orphan drugs. Access to this database is free of charge.
  • PubMed is a searchable database of medical literature and lists journal articles that discuss Dominant dystrophic epidermolysis bullosa. Click on the link to view a sample search on this topic.

News & Events News & Events


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News

  • Rare Disease Day at NIH 2021
    March 1, 2021

GARD Answers GARD Answers


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Questions sent to GARD may be posted here if the information could be helpful to others. We remove all identifying information when posting a question to protect your privacy. If you do not want your question posted, please let us know. Submit a new question

  • My cousin has dominant dystrophic epidermolysis bullosa. Is there a chance her future children might also have the condition? Is this condition curable? See answer


Have a question? Contact a GARD Information Specialist.

References References


  1. Dystrophic EB. DebRA of America. http://www.debra.org/dystrophic. Accessed 4/7/2016.
  2. M Peter Marinkovich. Epidermolysis bullosa. Medscape. January 8, 2014; http://emedicine.medscape.com/article/1062939-overview.
  3. Dystrophic epidermolysis bullosa. Genetics Home Reference. January 2008; http://ghr.nlm.nih.gov/condition/dystrophic-epidermolysis-bullosa.
  4. Pfendner EG & Lucky Aw. Dystrophic Epidermolysis Bullosa. GeneReviews. February 26, 2015; http://www.ncbi.nlm.nih.gov/books/NBK1304/.
  5. Satoru Shinkuma. Dystrophic epidermolysis bullosa: a review. Clin Cosmet Investig Dermatol. 2015; 8:275-284. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4451851/.
  6. Dystrophic epidermolysis bullosa. Genetics Home Refernce. January 2008; http://ghr.nlm.nih.gov/condition/dystrophic-epidermolysis-bullosa. Accessed 1/31/2014.
  7. Questions and Answers about Epidermolysis Bullosa. National Institute of Arthritis and Musculoskeletal and Skin Diseases. November 2013; http://www.niams.nih.gov/Health_Info/Epidermolysis_Bullosa/.
  8. Dystrophic Epidermolysis Bullosa. Gene Reviews. February 26, 2015; http://www.ncbi.nlm.nih.gov/books/NBK1304/.
  9. Jouni Uitto, Leena Bruckner-Tuderman, Angela M. Christiano , John A. McGrath, Cristina Has, Andrew P. South, Brett Kopelan, E. Clare Robinson. Progress toward Treatment and Cure of Epidermolysis Bullosa: Summary of DEBRA International Research Symposium EB2015. Journal of Investigative Dermatology. 2016; 136:352-358. http://www.ncbi.nlm.nih.gov/pubmed/26802230.
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