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

Syndactyly type 9



Other Names:
Syndactyly mesoaxial synostotic with phalangeal reduction; MSSD; Syndactyly Malik-Percin type
Categories:
This disease is grouped under:

The following summary is from Orphanet, a European reference portal for information on rare diseases and orphan drugs.
orphanet

Orpha Number: 157801

Definition
Mesoaxial synostotic syndactyly (MSSD) with phalangeal reduction is a novel and distinct form of non-syndromic syndactyly including complete syndactyly of the 3rd and 4th fingers with synostoses of the corresponding metacarpals and associated single phalanges, syndactyly of the 2nd and 3rd toes and 5th finger clinodactyly.

Epidemiology
It has been described in two families.

Etiology
The locus for this complex limb malformation was mapped to chromosome 17p13.3.

Genetic counseling
The condition is transmitted as an autosomal recessive trait.

Visit the Orphanet disease page for more resources.
Last updated: 10/1/2010

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
2-3 toe syndactyly
Webbed 2nd and 3rd toes
0004691
Aplasia/Hypoplasia of the middle phalanges of the hand
Absent/small middle finger bone of the hand
Absent/underdeveloped middle finger bone of the hand
[ more ]
0009843
Clinodactyly of the 5th finger
Permanent curving of the pinkie finger
0004209
Finger syndactyly 0006101
Metacarpal synostosis
Fused long bones of hand
0009701
Short hallux
Short big toe
0010109
Short palm 0004279
Short thumb
Short thumbs
Small thumbs
[ more ]
0009778
Symphalangism affecting the phalanges of the hand
Fused finger bones of the hand
0009773
30%-79% of people have these symptoms
Synostosis of carpal bones
Fusion of wrist bones
0005048
Percent of people who have these symptoms is not available through HPO
3-4 finger syndactyly
Webbed 3rd-4th fingers
0006097
Aplasia/Hypoplasia of the hallux
Absent/small big toe
Absent/underdeveloped big toe
[ more ]
0008362
Aplasia/Hypoplasia of the middle phalanx of the 2nd finger
Absent/small middle index finger bone
Absent/underdeveloped middle index finger bone
[ more ]
0009568
Aplasia/Hypoplasia of the middle phalanx of the 5th finger
Absent/small middle bone of pinky finger
Absent/underdeveloped middle bone of little finger
Absent/underdeveloped middle bone of pinkie finger
Absent/underdeveloped middle bone of pinky finger
[ more ]
0009161
Aplasia/Hypoplasia of the thumb
Absent/small thumb
Absent/underdeveloped thumb
[ more ]
0009601
Autosomal recessive inheritance 0000007
Proximal/middle symphalangism of 5th finger
Fused innermost and middle bones of little finger
Fused innermost and middle bones of pinkie finger
Fused innermost and middle bones of pinky finger
[ more ]
0009177
Single transverse palmar crease 0000954
Symphalangism affecting the phalanges of the hallux
Fused big toe bones
0010064
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Last updated: 7/1/2020

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


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

  • The Centers for Mendelian Genomics program is working to discover the causes of rare genetic disorders. For more information about applying to the research study, please visit their website.

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.

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 Syndactyly type 9. Click on the link to view a sample search on this topic.

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