National Center for Advancing and Translational Sciences Genetic and Rare Diseases Information Center, a program of the National Center for Advancing and Translational Sciences

Tarsal carpal coalition syndrome



Other Names:
TCC
Categories:

Tarsal carpal coalition syndrome (TCC) is a genetic condition characterized by fusion of the bones in the wrist (carpals), ankles (tarsals), and the fingers and toes (phalanges). Other bone abnormalities in the hands and feet may be present. Symptoms of TCC may include: stiffness and progressive immobility of the hands and feet and short stature. TCC is caused by mutations in the NOG gene, and it is inherited in an autosomal dominant manner.[1][2][3] Although there is no specific treatment or cure for TCC, there may be ways to manage the symptoms. A team of doctors or specialists is often needed to figure out the treatment options for each person.

Last updated: 9/13/2016

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.

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Medical Terms Other Names
Learn More:
HPO ID
80%-99% of people have these symptoms
Abnormality of the ankles 0003028
Short stature
Decreased body height
Small stature
[ more ]
0004322
Tarsal synostosis
Fused ankle bones
0008368
30%-79% of people have these symptoms
Carpal synostosis 0009702
Proximal symphalangism of hands
Fused innermost hinge joints
0006152
Radial deviation of finger 0009466
Short 1st metacarpal
Shortened 1st long bone of hand
0010034
5%-29% of people have these symptoms
Cubitus valgus
Outward turned elbows
0002967
Distal symphalangism of hands
Fused outermost bones of hand
0001204
Humeroradial synostosis
Fusion of upper and lower arm bones
0003041
Percent of people who have these symptoms is not available through HPO
Autosomal dominant inheritance 0000006
Brachydactyly
Short fingers or toes
0001156
Clinodactyly
Permanent curving of the finger
0030084
Progressive fusion 2nd-5th pip joints 0006147
Short finger
Stubby finger
0009381
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Last updated: 7/1/2020

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.

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


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
Tarsal-carpal coalition syndrome can be distinguished from multiple synostoses syndrome and proximal symphalangism (see these terms) by the absence of hearing loss.
Visit the Orphanet disease page for more information.

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.

Clinical Research Resources

  • Orphanet lists European clinical trials, research studies, and patient registries enrolling people with this condition. 

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

  • Genetics Home Reference (GHR) contains information on Tarsal carpal coalition syndrome. This website is maintained by the National Library of Medicine.

In-Depth Information

  • 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 Tarsal carpal coalition syndrome. Click on the link to view a sample search on this topic.

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

  • Where can I find a doctor for tarsal carpal coalition syndrome in Mississippi or Alabama? See answer



  1. Tarsal-carpal coalition syndrome. Orphanet. September 2007; http://www.orpha.net/consor/cgi-bin/OC_Exp.php?lng=EN&Expert=1412. Accessed 9/13/2016.
  2. tarsal-carpal coalition syndrome. Genetics Home Reference. April 2012; https://ghr.nlm.nih.gov/condition/tarsal-carpal-coalition-syndrome.
  3. Victor A. McKusick. TARSAL-CARPAL COALITION SYNDROME; TCC. In: Ada Hamosh. OMIM. 8/21/2012; http://www.omim.org/entry/186570.