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

Rhizomelic chondrodysplasia punctata type 1



Rhizomelic chondrodysplasia punctata type 1 (RCDP1) is a condition that impairs the normal development of many parts of the body. The major features of this disorder include skeletal abnormalities, distinctive facial features, intellectual disability, and respiratory problems. The condition is caused by mutations in the PEX7 gene. It is inherited in an autosomal recessive pattern. Rhizomelic chondrodysplasia punctata type 1 is one of five types of rhizomelic chondrodysplasia punctata. The types have similar features and are distinguished by their genetic cause.[1]
Last updated: 5/26/2015

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
Percent of people who have these symptoms is not available through HPO
Abnormality of metabolism/homeostasis
Laboratory abnormality
Metabolism abnormality
[ more ]
0001939
Alopecia
Hair loss
0001596
Autosomal recessive inheritance 0000007
Calcific stippling of infantile cartilaginous skeleton 0005841
Cerebral cortical atrophy
Decrease in size of the outer layer of the brain due to loss of brain cells
0002120
Cleft palate
Cleft roof of mouth
0000175
Coronal cleft vertebrae 0003417
Delayed CNS myelination 0002188
Depressed nasal bridge
Depressed bridge of nose
Flat bridge of nose
Flat nasal bridge
Flat, nasal bridge
Flattened nasal bridge
Low nasal bridge
Low nasal root
[ more ]
0005280
Developmental cataract
Clouding of the lens of the eye at birth
0000519
Epiphyseal stippling
Speckled calcifications in end part of bone
0010655
Flared metaphysis
Flared wide portion of long bone
0003015
Flat face
Flat facial shape
0012368
Flexion contracture
Flexed joint that cannot be straightened
0001371
Frontal bossing 0002007
Ichthyosis 0008064
Intellectual disability
Mental deficiency
Mental retardation
Mental retardation, nonspecific
Mental-retardation
[ more ]
0001249
Kyphoscoliosis 0002751
Malar flattening
Zygomatic flattening
0000272
Microcephaly
Abnormally small skull
Decreased circumference of cranium
Decreased size of skull
Reduced head circumference
Small head circumference
[ more ]
0000252
Micrognathia
Little lower jaw
Small jaw
Small lower jaw
[ more ]
0000347
Respiratory insufficiency
Respiratory impairment
0002093
Rhizomelia
Disproportionately short upper portion of limb
0008905
Seizure 0001250
Sensorineural hearing impairment 0000407
Severe failure to thrive
Severe faltering weight
Severe weight faltering
[ more ]
0001525
Severe short stature
Dwarfism
Proportionate dwarfism
Short stature, severe
[ more ]
0003510
Spasticity
Involuntary muscle stiffness, contraction, or spasm
0001257
Upslanted palpebral fissure
Upward slanting of the opening between the eyelids
0000582
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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


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


Living with a genetic or rare disease can impact the daily lives of patients and families. These resources can help families navigate various aspects of living with a rare disease.

Financial Resources


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 Rhizomelic chondrodysplasia punctata type 1. This website is maintained by the National Library of Medicine.

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.
  • 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 Rhizomelic chondrodysplasia punctata type 1. 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.


  1. Rhizomelic chondrodysplasia punctata. Genetics Home Reference (GHR). July 2010; http://ghr.nlm.nih.gov/condition/rhizomelic-chondrodysplasia-punctata. Accessed 5/26/2015.