Summary

MedlinePlus is an online health information resource. It is a service of the National Library of Medicine (NLM), the world's largest medical library, which is part of the National Institutes of Health (NIH). To promote the transmission of knowledge, this entry collection contains information about the effects of genetic variation on human health transferred from MedlinePlus.

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Otopalatodigital Syndrome Type 1
Otopalatodigital syndrome type 1 is a disorder primarily involving abnormalities in skeletal development.
  • 387
  • 24 Dec 2020
Topic Review
RAPADILINO Syndrome
RAPADILINO syndrome is a rare condition that involves many parts of the body. Bone development is especially affected, causing many of the characteristic features of the condition.
  • 459
  • 24 Dec 2020
Topic Review
Collagen VI-related Myopathy
Collagen VI-related myopathy is a group of disorders that affect skeletal muscles (which are the muscles used for movement) and connective tissue (which provides strength and flexibility to the skin, joints, and other structures throughout the body). Most affected individuals have muscle weakness and joint deformities called contractures that restrict movement of the affected joints and worsen over time. Researchers have described several forms of collagen VI-related myopathy, which range in severity: Bethlem myopathy is the mildest, an intermediate form is moderate in severity, and Ullrich congenital muscular dystrophy is the most severe.
  • 696
  • 24 Dec 2020
Topic Review
Atelosteogenesis Type 3
Atelosteogenesis type 3 is a disorder that affects the development of bones throughout the body. Affected individuals are born with inward- and upward-turning feet (clubfeet) and dislocations of the hips, knees, and elbows. Bones in the spine, rib cage, pelvis, and limbs may be underdeveloped or in some cases absent. As a result of the limb bone abnormalities, individuals with this condition have very short arms and legs. Their hands and feet are wide, with broad fingers and toes that may be permanently bent (camptodactyly) or fused together (syndactyly). Characteristic facial features include a broad forehead, wide-set eyes (hypertelorism), and an underdeveloped nose. About half of affected individuals have an opening in the roof of the mouth (a cleft palate.)
  • 451
  • 24 Dec 2020
Topic Review
SCN4A Gene
sodium voltage-gated channel alpha subunit 4
  • 416
  • 24 Dec 2020
Topic Review
Osteopetrosis
Osteopetrosis is a bone disease that makes bones abnormally dense and prone to breakage (fracture). Researchers have described several major types of osteopetrosis, which are usually distinguished by their pattern of inheritance: autosomal dominant, autosomal recessive, or X-linked. The different types of the disorder can also be distinguished by the severity of their signs and symptoms.
  • 449
  • 24 Dec 2020
Topic Review
Cole Disease
Cole disease is a disorder that affects the skin. People with this disorder have areas of unusually light-colored skin (hypopigmentation), typically on the arms and legs, and spots of thickened skin on the palms of the hands and the soles of the feet (punctate palmoplantar keratoderma). These skin features are present at birth or develop in the first year of life.
  • 501
  • 24 Dec 2020
Topic Review
Atelosteogenesis Type 1
Atelosteogenesis type 1 is a disorder that affects the development of bones throughout the body. Affected individuals are born with inward- and upward-turning feet (clubfeet) and dislocations of the hips, knees, and elbows. Bones in the spine, rib cage, pelvis, and limbs may be underdeveloped or in some cases absent. As a result of the limb bone abnormalities, individuals with this condition have very short arms and legs. Characteristic facial features include a prominent forehead, wide-set eyes (hypertelorism), an upturned nose with a grooved tip, and a very small lower jaw and chin (micrognathia). Affected individuals may also have an opening in the roof of the mouth (a cleft palate). Males with this condition can have undescended testes.
  • 536
  • 24 Dec 2020
Topic Review
RAB18 Deficiency
RAB18 deficiency causes two conditions with similar signs and symptoms that primarily affect the eyes, brain, and reproductive system. These two conditions, called Warburg micro syndrome and Martsolf syndrome, were once thought to be distinct disorders but are now considered to be part of the same disease spectrum because of their similar features and shared genetic cause.
  • 422
  • 24 Dec 2020
Topic Review
SCN1A Gene
sodium voltage-gated channel alpha subunit 1
  • 408
  • 24 Dec 2020
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