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

Microcephalic osteodysplastic primordial dwarfism type 2



Other Names:
MOPD 2; MOPD II; Osteodysplastic primordial dwarfism type 2; MOPD 2; MOPD II; Osteodysplastic primordial dwarfism type 2; Microcephalic osteodysplastic primordial dwarfism with tooth abnormalities; Majewski osteodysplastic primordial dwarfism type II See More
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Microcephalic osteodysplastic primordial dwarfism type 2 (MOPD2) is a condition characterized by short stature (dwarfism), skeletal abnormalities and an unusually small head size (microcephaly). Other signs and symptoms of MOPD2 may include hip dysplasia; thinning of the bones in the arms and legs; scoliosis; shortened wrist bones; a high-pitched voice; distinctive facial features (prominent nose, full cheeks, a long midface, and a small jaw); small teeth; abnormal skin pigmentation; and blood vessel abnormalities. Intellectual development is typically normal. It is caused by mutations in the PCNT gene and is inherited in an autosomal recessive manner.[1]
Last updated: 11/11/2011

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 epiphysis morphology
Abnormal shape of end part of bone
0005930
Abnormality of the metaphysis
Abnormality of the wide portion of a long bone
0000944
Aplasia/Hypoplasia of the earlobes
Absent/small ear lobes
Absent/underdeveloped ear lobes
[ more ]
0009906
Brachydactyly
Short fingers or toes
0001156
Clinodactyly of the 5th finger
Permanent curving of the pinkie finger
0004209
Coxa vara 0002812
Delayed skeletal maturation
Delayed bone maturation
Delayed skeletal development
[ more ]
0002750
Disproportionate short stature 0003498
Fine hair
Fine hair shaft
Fine hair texture
Thin hair shaft
Thin hair texture
[ more ]
0002213
High pitched voice 0001620
Hypoplastic iliac wing 0002866
Intrauterine growth retardation
Prenatal growth deficiency
Prenatal growth retardation
[ more ]
0001511
Microcephaly
Abnormally small skull
Decreased circumference of cranium
Decreased size of skull
Reduced head circumference
Small head circumference
[ more ]
0000252
Micromelia
Smaller or shorter than typical limbs
0002983
Narrow pelvis bone 0003275
Nasal speech
Nasal voice
0001611
Prominent nose
Big nose
Disproportionately large nose
Increased nasal size
Increased size of nose
Large nose
Pronounced nose
[ more ]
0000448
Reduced number of teeth
Decreased tooth count
0009804
30%-79% of people have these symptoms
Abnormality of female external genitalia
Abnormal female external genitalia
0000055
Aplasia/Hypoplasia of the eyebrow
Absence of eyebrow
Lack of eyebrow
Missing eyebrow
[ more ]
0100840
Dry skin 0000958
Full cheeks
Apple cheeks
Big cheeks
Increased size of cheeks
Large cheeks
[ more ]
0000293
Hypopigmented skin patches
Patchy loss of skin color
0001053
Joint hyperflexibility
Joints move beyond expected range of motion
0005692
Low-set ears
Low set ears
Lowset ears
[ more ]
0000369
Microdontia
Decreased width of tooth
0000691
Multiple cafe-au-lait spots 0007565
Retrognathia
Receding chin
Receding lower jaw
Weak chin
Weak jaw
[ more ]
0000278
Scoliosis 0002650
Sensorineural hearing impairment 0000407
Truncal obesity 0001956
Underdeveloped nasal alae
Underdeveloped tissue around nostril
0000430
Wide nasal bridge
Broad nasal bridge
Broad nasal root
Broadened nasal bridge
Increased breadth of bridge of nose
Increased breadth of nasal bridge
Increased width of bridge of nose
Increased width of nasal bridge
Nasal bridge broad
Wide bridge of nose
Widened nasal bridge
[ more ]
0000431
5%-29% of people have these symptoms
Anemia
Low number of red blood cells or hemoglobin
0001903
Arterial stenosis
Narrowing of an artery
0100545
Atrial septal defect
An opening in the wall separating the top two chambers of the heart
Hole in heart wall separating two upper heart chambers
[ more ]
0001631
Attention deficit hyperactivity disorder
Attention deficit
Attention deficit disorder
Attention deficit-hyperactivity disorder
Attention deficits
Childhood attention deficit/hyperactivity disorder
[ more ]
0007018
Cone-shaped epiphysis
Cone-shaped end part of bone
0010579
Dilatation
Wider than typical opening or gap
0002617
Distal symphalangism 0100263
Downslanted palpebral fissures
Downward slanting of the opening between the eyelids
0000494
Global developmental delay 0001263
Hypoplasia of the corpus callosum
Underdevelopment of part of brain called corpus callosum
0002079
Hypoplastic scapulae
Small shoulder blade
0000882
Intellectual disability
Mental deficiency
Mental retardation
Mental retardation, nonspecific
Mental-retardation
[ more ]
0001249
Ivory epiphyses
Increased bone density in end part of bone
0010583
Large sella turcica
Big sella turcica
0002690
Laryngomalacia
Softening of voice box tissue
0001601
Limited elbow extension
Decreased elbow extension
Elbow limited extension
Limitation of elbow extension
Limited extension at elbows
Limited forearm extension
Restricted elbow extension
[ more ]
0001377
Long clavicles
Long collarbone
0000890
Narrow chest
Low chest circumference
Narrow shoulders
[ more ]
0000774
Narrow palpebral fissure
Small opening between the eyelids
0045025
Patent ductus arteriosus 0001643
Precocious puberty
Early onset of puberty
Early puberty
[ more ]
0000826
Recurrent respiratory infections
Frequent respiratory infections
Multiple respiratory infections
respiratory infections, recurrent
Susceptibility to respiratory infections
[ more ]
0002205
Seizure 0001250
Short middle phalanx of finger
Short middle bone of finger
0005819
Straight clavicles
Straight collarbone
0006587
Stroke 0001297
Thin clavicles
Thin collarbone
0006645
Tracheal stenosis
Narrowing of windpipe
0002777
Ventriculomegaly 0002119
Percent of people who have these symptoms is not available through HPO
Areas of hypopigmentation and hyperpigmentation that do not follow Blaschko lines 0007402
Autosomal recessive inheritance 0000007
Cafe-au-lait spot 0000957
Dilatation of the cerebral artery 0004944
Flared metaphysis
Flared wide portion of long bone
0003015
Hypermetropia
Farsightedness
Long-sightedness
[ more ]
0000540
Hypoplasia of dental enamel
Underdeveloped teeth enamel
0006297
Hypospadias 0000047
Microtia
Small ears
Underdeveloped ears
[ more ]
0008551
Moyamoya phenomenon 0011834
Postnatal growth retardation
Growth delay as children
0008897
Prominent nasal bridge
Elevated nasal bridge
High nasal bridge
Prominent bridge of nose
Prominent nasal root
Protruding bridge of nose
Protruding nasal bridge
[ more ]
0000426
Proximal femoral epiphysiolysis
Slipped end part of innermost thighbone
0006461
Pseudoepiphyses of the metacarpals 0009193
Radial bowing
Bowing of outer large bone of the forearm
0002986
Short 1st metacarpal
Shortened 1st long bone of hand
0010034
Short distal phalanx of finger
Short outermost finger bone
0009882
Slender long bone
Long bones slender
Thin long bones
[ more ]
0003100
Sloping forehead
Inclined forehead
Receding forehead
[ more ]
0000340
Sparse scalp hair
Reduced/lack of hair on scalp
Scalp hair, thinning
Sparse, thin scalp hair
sparse-absent scalp hair
[ more ]
0002209
Tibial bowing
Bowed shankbone
Bowed shinbone
[ more ]
0002982
Type II diabetes mellitus
Noninsulin-dependent diabetes
Type 2 diabetes
Type II diabetes
[ more ]
0005978
Ulnar bowing
Curving of inner forearm bone
0003031
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


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
Differential diagnosis includes Meier-Gorlin syndrome, LIG4 syndrome, XRCC4 deficiency, Seckel syndrome, MOPD types I and III, SHORT syndrome, Schimke immuno-osseous dysplasia, and Dubowitz syndrome.
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

  • The U.S. National Institutes of Health, through the National Library of Medicine, developed ClinicalTrials.gov to provide patients, family members, and members of the public with current information on clinical research studies. There is a study titled Pediatric Patients With Metabolic or Other Genetic Disorders which may be of interest to you.

Patient Registry

  • A registry supports research by collecting of information about patients that share something in common, such as being diagnosed with Microcephalic osteodysplastic primordial dwarfism type 2. 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 Microcephalic osteodysplastic primordial dwarfism type 2:
    International Skeletal Dysplasia Registry (ISDR)
     

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


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 Microcephalic osteodysplastic primordial dwarfism type 2. 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 Microcephalic osteodysplastic primordial dwarfism type 2. 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

  • Does the "M" in MOPD stand for microcephaly or Majewski? What is the difference between the types of MOPD in terms of genetics? See answer



  1. Microcephalic osteodysplastic primordial dwarfism type II. Genetics Home Reference. January 2011; http://ghr.nlm.nih.gov/condition/microcephalic-osteodysplastic-primordial-dwarfism-type-ii. Accessed 11/11/2011.