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genetic changes | What are the genetic changes related to congenital mirror movement disorder ? | Congenital mirror movement disorder can be caused by mutations in the DCC or RAD51 gene; mutations in these genes account for a total of about 35 percent of cases. Mutations in other genes that have not been identified likely account for other cases of this disorder. The DCC gene provides instructions for making a pro... |
inheritance | Is congenital mirror movement disorder inherited ? | In most cases, including those caused by mutations in the DCC or RAD51 gene, this condition is inherited in an autosomal dominant pattern, which means one copy of the altered gene in each cell is sufficient to cause the disorder. In most cases, an affected person has one parent with the altered gene. Some people who ha... |
treatment | What are the treatments for congenital mirror movement disorder ? | These resources address the diagnosis or management of congenital mirror movement disorder: - Gene Review: Gene Review: Congenital Mirror Movements - Genetic Testing Registry: Mirror movements 2 - Genetic Testing Registry: Mirror movements, congenital - KidsHealth: Occupational Therapy These resources from Medlin... |
information | What is (are) Duane-radial ray syndrome ? | Duane-radial ray syndrome is a disorder that affects the eyes and causes abnormalities of bones in the arms and hands. This condition is characterized by a particular problem with eye movement called Duane anomaly (also known as Duane syndrome). This abnormality results from the improper development of certain nerves t... |
frequency | How many people are affected by Duane-radial ray syndrome ? | Duane-radial ray syndrome is a rare condition whose prevalence is unknown. Only a few affected families have been reported worldwide. |
genetic changes | What are the genetic changes related to Duane-radial ray syndrome ? | Duane-radial ray syndrome results from mutations in the SALL4 gene. This gene is part of a group of genes called the SALL family. SALL genes provide instructions for making proteins that are involved in the formation of tissues and organs before birth. The proteins produced from these genes act as transcription factors... |
inheritance | Is Duane-radial ray syndrome inherited ? | This condition is inherited in an autosomal dominant pattern, which means one copy of the altered SALL4 gene in each cell is sufficient to cause the disorder. In many cases, an affected person inherits a mutation from one affected parent. Other cases result from new mutations in the gene and occur in people with no his... |
treatment | What are the treatments for Duane-radial ray syndrome ? | These resources address the diagnosis or management of Duane-radial ray syndrome: - Gene Review: Gene Review: SALL4-Related Disorders - Genetic Testing Registry: Duane-radial ray syndrome - MedlinePlus Encyclopedia: Skeletal Limb Abnormalities These resources from MedlinePlus offer information about the diagnosis ... |
information | What is (are) prion disease ? | Prion disease represents a group of conditions that affect the nervous system in humans and animals. In people, these conditions impair brain function, causing changes in memory, personality, and behavior; a decline in intellectual function (dementia); and abnormal movements, particularly difficulty with coordinating m... |
frequency | How many people are affected by prion disease ? | These disorders are very rare. Although the exact prevalence of prion disease is unknown, studies suggest that this group of conditions affects about one person per million worldwide each year. Approximately 350 new cases are reported annually in the United States. |
genetic changes | What are the genetic changes related to prion disease ? | Between 10 and 15 percent of all cases of prion disease are caused by mutations in the PRNP gene. Because they can run in families, these forms of prion disease are classified as familial. Familial prion diseases, which have overlapping signs and symptoms, include familial Creutzfeldt-Jakob disease (CJD), Gerstmann-Str... |
inheritance | Is prion disease inherited ? | Familial forms of prion disease are inherited in an autosomal dominant pattern, which means one copy of the altered PRNP gene in each cell is sufficient to cause the disorder. In most cases, an affected person inherits the altered gene from one affected parent. In some people, familial forms of prion disease are caused... |
treatment | What are the treatments for prion disease ? | These resources address the diagnosis or management of prion disease: - Creutzfeldt-Jakob Disease Foundation: Suggestions for Patient Care - Gene Review: Gene Review: Genetic Prion Diseases - Genetic Testing Registry: Genetic prion diseases - MedlinePlus Encyclopedia: Creutzfeldt-Jakob disease - MedlinePlus Encycl... |
information | What is (are) X-linked myotubular myopathy ? | X-linked myotubular myopathy is a condition that primarily affects muscles used for movement (skeletal muscles) and occurs almost exclusively in males. People with this condition have muscle weakness (myopathy) and decreased muscle tone (hypotonia) that are usually evident at birth. The muscle problems in X-linked myo... |
frequency | How many people are affected by X-linked myotubular myopathy ? | The incidence of X-linked myotubular myopathy is estimated to be 1 in 50,000 newborn males worldwide. |
genetic changes | What are the genetic changes related to X-linked myotubular myopathy ? | Mutations in the MTM1 gene cause X-linked myotubular myopathy. The MTM1 gene provides instructions for producing an enzyme called myotubularin. Myotubularin is thought to be involved in the development and maintenance of muscle cells. MTM1 gene mutations probably disrupt myotubularin's role in muscle cell development ... |
inheritance | Is X-linked myotubular myopathy inherited ? | X-linked myotubular myopathy is inherited in an X-linked recessive pattern. The gene associated with this condition is located on the X chromosome, which is one of the two sex chromosomes. In males (who have only one X chromosome), one altered copy of the gene in each cell is sufficient to cause the condition. In femal... |
treatment | What are the treatments for X-linked myotubular myopathy ? | These resources address the diagnosis or management of X-linked myotubular myopathy: - Gene Review: Gene Review: X-Linked Centronuclear Myopathy - Genetic Testing Registry: Severe X-linked myotubular myopathy These resources from MedlinePlus offer information about the diagnosis and management of various health con... |
information | What is (are) hyperphosphatemic familial tumoral calcinosis ? | Hyperphosphatemic familial tumoral calcinosis (HFTC) is a condition characterized by an increase in the levels of phosphate in the blood (hyperphosphatemia) and abnormal deposits of phosphate and calcium (calcinosis) in the body's tissues. Calcinosis typically develops in early childhood to early adulthood, although in... |
frequency | How many people are affected by hyperphosphatemic familial tumoral calcinosis ? | The prevalence of HFTC is unknown, but it is thought to be a rare condition. It occurs most often in Middle Eastern and African populations. |
genetic changes | What are the genetic changes related to hyperphosphatemic familial tumoral calcinosis ? | Mutations in the FGF23, GALNT3, or KL gene cause HFTC. The proteins produced from these genes are all involved in the regulation of phosphate levels within the body (phosphate homeostasis). Among its many functions, phosphate plays a critical role in the formation and growth of bones in childhood and helps maintain bon... |
inheritance | Is hyperphosphatemic familial tumoral calcinosis inherited ? | This condition is inherited in an autosomal recessive pattern, which means both copies of the gene in each cell have mutations. The parents of an individual with an autosomal recessive condition each carry one copy of the mutated gene, but they typically do not show signs and symptoms of the condition. |
treatment | What are the treatments for hyperphosphatemic familial tumoral calcinosis ? | These resources address the diagnosis or management of hyperphosphatemic familial tumoral calcinosis: - Genetic Testing Registry: Tumoral calcinosis, familial, hyperphosphatemic These resources from MedlinePlus offer information about the diagnosis and management of various health conditions: - Diagnostic Tests - ... |
information | What is (are) frontometaphyseal dysplasia ? | Frontometaphyseal dysplasia is a disorder involving abnormalities in skeletal development and other health problems. It is a member of a group of related conditions called otopalatodigital spectrum disorders, which also includes otopalatodigital syndrome type 1, otopalatodigital syndrome type 2, and Melnick-Needles syn... |
frequency | How many people are affected by frontometaphyseal dysplasia ? | Frontometaphyseal dysplasia is a rare disorder; only a few dozen cases have been reported worldwide. |
genetic changes | What are the genetic changes related to frontometaphyseal dysplasia ? | Mutations in the FLNA gene cause frontometaphyseal dysplasia. The FLNA gene provides instructions for producing the protein filamin A, which helps build the network of protein filaments (cytoskeleton) that gives structure to cells and allows them to change shape and move. Filamin A binds to another protein called acti... |
inheritance | Is frontometaphyseal dysplasia inherited ? | This condition is inherited in an X-linked dominant pattern. The gene associated with this condition is located on the X chromosome, which is one of the two sex chromosomes. In females (who have two X chromosomes), a mutation in one of the two copies of the gene in each cell is sufficient to cause the disorder. In male... |
treatment | What are the treatments for frontometaphyseal dysplasia ? | These resources address the diagnosis or management of frontometaphyseal dysplasia: - Gene Review: Gene Review: Otopalatodigital Spectrum Disorders - Genetic Testing Registry: Frontometaphyseal dysplasia These resources from MedlinePlus offer information about the diagnosis and management of various health conditio... |
information | What is (are) Mabry syndrome ? | Mabry syndrome is a condition characterized by intellectual disability, distinctive facial features, increased levels of an enzyme called alkaline phosphatase in the blood (hyperphosphatasia), and other signs and symptoms. People with Mabry syndrome have intellectual disability that is often moderate to severe. They t... |
frequency | How many people are affected by Mabry syndrome ? | Mabry syndrome is likely a rare condition, but its prevalence is unknown. More than 20 cases have been described in the scientific literature. |
genetic changes | What are the genetic changes related to Mabry syndrome ? | Mutations in the PIGV, PIGO, or PGAP2 gene cause Mabry syndrome. These genes are all involved in the production (synthesis) of a molecule called a glycosylphosphosphatidylinositol (GPI) anchor. This molecule is synthesized in a series of steps. It then attaches (binds) to various proteins and binds them to the outer su... |
inheritance | Is Mabry syndrome inherited ? | This condition is inherited in an autosomal recessive pattern, which means both copies of the gene in each cell have mutations. The parents of an individual with an autosomal recessive condition each carry one copy of the mutated gene, but they typically do not show signs and symptoms of the condition. |
treatment | What are the treatments for Mabry syndrome ? | These resources address the diagnosis or management of Mabry syndrome: - Genetic Testing Registry: Hyperphosphatasia with mental retardation syndrome - Genetic Testing Registry: Hyperphosphatasia with mental retardation syndrome 1 - Genetic Testing Registry: Hyperphosphatasia with mental retardation syndrome 2 - Ge... |
information | What is (are) harlequin ichthyosis ? | Harlequin ichthyosis is a severe genetic disorder that mainly affects the skin. Infants with this condition are born with very hard, thick skin covering most of their bodies. The skin forms large, diamond-shaped plates that are separated by deep cracks (fissures). These skin abnormalities affect the shape of the eyelid... |
frequency | How many people are affected by harlequin ichthyosis ? | Harlequin ichthyosis is very rare; its exact incidence is unknown. |
genetic changes | What are the genetic changes related to harlequin ichthyosis ? | Mutations in the ABCA12 gene cause harlequin ichthyosis. The ABCA12 gene provides instructions for making a protein that is essential for the normal development of skin cells. This protein plays a major role in the transport of fats (lipids) in the outermost layer of skin (the epidermis). Some mutations in the ABCA12 g... |
inheritance | Is harlequin ichthyosis inherited ? | This condition is inherited in an autosomal recessive pattern, which means both copies of the gene in each cell have mutations. The parents of an individual with an autosomal recessive condition each carry one copy of the mutated gene, but they typically do not show signs and symptoms of the condition. |
treatment | What are the treatments for harlequin ichthyosis ? | These resources address the diagnosis or management of harlequin ichthyosis: - Gene Review: Gene Review: Autosomal Recessive Congenital Ichthyosis - Genetic Testing Registry: Autosomal recessive congenital ichthyosis 4B These resources from MedlinePlus offer information about the diagnosis and management of various... |
information | What is (are) boomerang dysplasia ? | Boomerang dysplasia 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 ... |
frequency | How many people are affected by boomerang dysplasia ? | Boomerang dysplasia is a rare disorder; its exact prevalence is unknown. Approximately 10 affected individuals have been identified. |
genetic changes | What are the genetic changes related to boomerang dysplasia ? | Mutations in the FLNB gene cause boomerang dysplasia. The FLNB gene provides instructions for making a protein called filamin B. This protein helps build the network of protein filaments (cytoskeleton) that gives structure to cells and allows them to change shape and move. Filamin B attaches (binds) to another protein ... |
inheritance | Is boomerang dysplasia inherited ? | This condition is inherited in an autosomal dominant pattern, which means one copy of the altered gene in each cell is sufficient to cause the disorder. Almost all cases result from new mutations in the gene and occur in people with no history of the disorder in their family. |
treatment | What are the treatments for boomerang dysplasia ? | These resources address the diagnosis or management of boomerang dysplasia: - Gene Review: Gene Review: FLNB-Related Disorders - Genetic Testing Registry: Boomerang dysplasia These resources from MedlinePlus offer information about the diagnosis and management of various health conditions: - Diagnostic Tests - Dr... |
information | What is (are) dihydrolipoamide dehydrogenase deficiency ? | Dihydrolipoamide dehydrogenase deficiency is a severe condition that can affect several body systems. Signs and symptoms of this condition usually appear shortly after birth, and they can vary widely among affected individuals. A common feature of dihydrolipoamide dehydrogenase deficiency is a potentially life-threate... |
frequency | How many people are affected by dihydrolipoamide dehydrogenase deficiency ? | Dihydrolipoamide dehydrogenase deficiency occurs in an estimated 1 in 35,000 to 48,000 individuals of Ashkenazi Jewish descent. This population typically has liver disease as the primary symptom. In other populations, the prevalence of dihydrolipoamide dehydrogenase deficiency is unknown, but the condition is likely ra... |
genetic changes | What are the genetic changes related to dihydrolipoamide dehydrogenase deficiency ? | Mutations in the DLD gene cause dihydrolipoamide dehydrogenase deficiency. This gene provides instructions for making an enzyme called dihydrolipoamide dehydrogenase (DLD). DLD is one component of three different groups of enzymes that work together (enzyme complexes): branched-chain alpha-keto acid dehydrogenase (BCKD... |
inheritance | Is dihydrolipoamide dehydrogenase deficiency inherited ? | This condition is inherited in an autosomal recessive pattern, which means both copies of the gene in each cell have mutations. The parents of an individual with an autosomal recessive condition each carry one copy of the mutated gene, but they typically do not show signs and symptoms of the condition. |
treatment | What are the treatments for dihydrolipoamide dehydrogenase deficiency ? | These resources address the diagnosis or management of dihydrolipoamide dehydrogenase deficiency: - Gene Review: Gene Review: Dihydrolipoamide Dehydrogenase Deficiency - Genetic Testing Registry: Maple syrup urine disease, type 3 These resources from MedlinePlus offer information about the diagnosis and management ... |
information | What is (are) spinal muscular atrophy ? | Spinal muscular atrophy is a genetic disorder that affects the control of muscle movement. It is caused by a loss of specialized nerve cells, called motor neurons, in the spinal cord and the part of the brain that is connected to the spinal cord (the brainstem). The loss of motor neurons leads to weakness and wasting (... |
frequency | How many people are affected by spinal muscular atrophy ? | Spinal muscular atrophy affects 1 in 6,000 to 1 in 10,000 people. |
genetic changes | What are the genetic changes related to spinal muscular atrophy ? | Mutations in the SMN1, UBA1, DYNC1H1, and VAPB genes cause spinal muscular atrophy. Extra copies of the SMN2 gene modify the severity of spinal muscular atrophy. The SMN1 and SMN2 genes provide instructions for making a protein called the survival motor neuron (SMN) protein. The SMN protein is important for the mainte... |
inheritance | Is spinal muscular atrophy inherited ? | Types I, II, III, and IV spinal muscular atrophy are inherited in an autosomal recessive pattern, which means both copies of the SMN1 gene in each cell have mutations. The parents of an individual with an autosomal recessive condition each carry one copy of the mutated gene, but they typically do not show signs and sym... |
treatment | What are the treatments for spinal muscular atrophy ? | These resources address the diagnosis or management of spinal muscular atrophy: - Gene Review: Gene Review: Spinal Muscular Atrophy - Gene Review: Gene Review: Spinal Muscular Atrophy, X-Linked Infantile - Genetic Testing Registry: Adult proximal spinal muscular atrophy, autosomal dominant - Genetic Testing Registr... |
information | What is (are) ankyloblepharon-ectodermal defects-cleft lip/palate syndrome ? | Ankyloblepharon-ectodermal defects-cleft lip/palate (AEC) syndrome is a form of ectodermal dysplasia, a group of about 150 conditions characterized by abnormal development of ectodermal tissues including the skin, hair, nails, teeth, and sweat glands. Among the most common features of AEC syndrome are missing patches ... |
frequency | How many people are affected by ankyloblepharon-ectodermal defects-cleft lip/palate syndrome ? | AEC syndrome is a rare condition; its prevalence is unknown. All forms of ectodermal dysplasia together occur in about 1 in 100,000 newborns in the United States. |
genetic changes | What are the genetic changes related to ankyloblepharon-ectodermal defects-cleft lip/palate syndrome ? | AEC syndrome is caused by mutations in the TP63 gene. This gene provides instructions for making a protein known as p63, which plays an essential role in early development. The p63 protein is a transcription factor, which means that it attaches (binds) to DNA and controls the activity of particular genes. The p63 prote... |
inheritance | Is ankyloblepharon-ectodermal defects-cleft lip/palate syndrome inherited ? | This condition is inherited in an autosomal dominant pattern, which means one copy of the altered gene in each cell is sufficient to cause the disorder. |
treatment | What are the treatments for ankyloblepharon-ectodermal defects-cleft lip/palate syndrome ? | These resources address the diagnosis or management of AEC syndrome: - Gene Review: Gene Review: TP63-Related Disorders - Genetic Testing Registry: Hay-Wells syndrome of ectodermal dysplasia - Genetic Testing Registry: Rapp-Hodgkin ectodermal dysplasia syndrome These resources from MedlinePlus offer information ab... |
information | What is (are) pyridoxine-dependent epilepsy ? | Pyridoxine-dependent epilepsy is a condition that involves seizures beginning in infancy or, in some cases, before birth. Those affected typically experience prolonged seizures lasting several minutes (status epilepticus). These seizures involve muscle rigidity, convulsions, and loss of consciousness (tonic-clonic seiz... |
frequency | How many people are affected by pyridoxine-dependent epilepsy ? | Pyridoxine-dependent epilepsy occurs in 1 in 100,000 to 700,000 individuals. At least 100 cases have been reported worldwide. |
genetic changes | What are the genetic changes related to pyridoxine-dependent epilepsy ? | Mutations in the ALDH7A1 gene cause pyridoxine-dependent epilepsy. The ALDH7A1 gene provides instructions for making an enzyme called -aminoadipic semialdehyde (-AASA) dehydrogenase, also known as antiquitin. This enzyme is involved in the breakdown of the protein building block (amino acid) lysine in the brain. When ... |
inheritance | Is pyridoxine-dependent epilepsy inherited ? | This condition is inherited in an autosomal recessive pattern, which means both copies of the gene in each cell have mutations. The parents of an individual with an autosomal recessive condition each carry one copy of the mutated gene, but they typically do not show signs and symptoms of the condition. |
treatment | What are the treatments for pyridoxine-dependent epilepsy ? | These resources address the diagnosis or management of pyridoxine-dependent epilepsy: - Gene Review: Gene Review: Pyridoxine-Dependent Epilepsy - Genetic Testing Registry: Pyridoxine-dependent epilepsy - MedlinePlus Encyclopedia: Generalized tonic-clonic seizure These resources from MedlinePlus offer information a... |
information | What is (are) Wiskott-Aldrich syndrome ? | Wiskott-Aldrich syndrome is characterized by abnormal immune system function (immune deficiency) and a reduced ability to form blood clots. This condition primarily affects males. Individuals with Wiskott-Aldrich syndrome have microthrombocytopenia, which is a decrease in the number and size of blood cells involved in... |
frequency | How many people are affected by Wiskott-Aldrich syndrome ? | The estimated incidence of Wiskott-Aldrich syndrome is between 1 and 10 cases per million males worldwide; this condition is rarer in females. |
genetic changes | What are the genetic changes related to Wiskott-Aldrich syndrome ? | Mutations in the WAS gene cause Wiskott-Aldrich syndrome. The WAS gene provides instructions for making a protein called WASP. This protein is found in all blood cells. WASP is involved in relaying signals from the surface of blood cells to the actin cytoskeleton, which is a network of fibers that make up the cell's st... |
inheritance | Is Wiskott-Aldrich syndrome inherited ? | This condition is inherited in an X-linked pattern. The gene associated with this condition is located on the X chromosome, which is one of the two sex chromosomes. In females (who have two X chromosomes), a mutation in one of the two copies of the gene in each cell may or may not cause the disorder. In males (who have... |
treatment | What are the treatments for Wiskott-Aldrich syndrome ? | These resources address the diagnosis or management of Wiskott-Aldrich syndrome: - Gene Review: Gene Review: WAS-Related Disorders - Genetic Testing Registry: Wiskott-Aldrich syndrome - MedlinePlus Encyclopedia: Thrombocytopenia - National Marrow Donor Program - Rare Disease Clinical Research Network: Primary Immu... |
information | What is (are) short QT syndrome ? | Short QT syndrome is a condition that can cause a disruption of the heart's normal rhythm (arrhythmia). In people with this condition, the heart (cardiac) muscle takes less time than usual to recharge between beats. The term "short QT" refers to a specific pattern of heart activity that is detected with an electrocardi... |
frequency | How many people are affected by short QT syndrome ? | Short QT syndrome appears to be rare. At least 70 cases have been identified worldwide since the condition was discovered in 2000. However, the condition may be underdiagnosed because some affected individuals never experience symptoms. |
genetic changes | What are the genetic changes related to short QT syndrome ? | Mutations in the KCNH2, KCNJ2, and KCNQ1 genes can cause short QT syndrome. These genes provide instructions for making channels that transport positively charged atoms (ions) of potassium out of cells. In cardiac muscle, these ion channels play critical roles in maintaining the heart's normal rhythm. Mutations in the ... |
inheritance | Is short QT syndrome inherited ? | Short QT syndrome appears to have an autosomal dominant pattern of inheritance, which means one copy of the altered gene in each cell is sufficient to cause the disorder. Some affected individuals have a family history of short QT syndrome or related heart problems and sudden cardiac death. Other cases of short QT synd... |
treatment | What are the treatments for short QT syndrome ? | These resources address the diagnosis or management of short QT syndrome: - Genetic Testing Registry: Short QT syndrome 1 - Genetic Testing Registry: Short QT syndrome 2 - Genetic Testing Registry: Short QT syndrome 3 - MedlinePlus Encyclopedia: Arrhythmias These resources from MedlinePlus offer information about... |
information | What is (are) spinal muscular atrophy with respiratory distress type 1 ? | Spinal muscular atrophy with respiratory distress type 1 (SMARD1) is an inherited condition that causes muscle weakness and respiratory failure typically beginning in infancy. Early features of this condition are difficult and noisy breathing, especially when inhaling; a weak cry; problems feeding; and recurrent episod... |
frequency | How many people are affected by spinal muscular atrophy with respiratory distress type 1 ? | SMARD1 appears to be a rare condition, but its prevalence is unknown. More than 60 cases have been reported in the scientific literature. |
genetic changes | What are the genetic changes related to spinal muscular atrophy with respiratory distress type 1 ? | Mutations in the IGHMBP2 gene cause SMARD1. The IGHMBP2 gene provides instructions for making a protein involved in copying (replicating) DNA; producing RNA, a chemical cousin of DNA; and producing proteins. IGHMBP2 gene mutations that cause SMARD1 lead to the production of a protein with reduced ability to aid in DNA ... |
inheritance | Is spinal muscular atrophy with respiratory distress type 1 inherited ? | This condition is inherited in an autosomal recessive pattern, which means both copies of the gene in each cell have mutations. The parents of an individual with an autosomal recessive condition each carry one copy of the mutated gene, but they typically do not show signs and symptoms of the condition. |
treatment | What are the treatments for spinal muscular atrophy with respiratory distress type 1 ? | These resources address the diagnosis or management of SMARD1: - Genetic Testing Registry: Spinal muscular atrophy with respiratory distress 1 These resources from MedlinePlus offer information about the diagnosis and management of various health conditions: - Diagnostic Tests - Drug Therapy - Surgery and Rehabil... |
information | What is (are) pseudocholinesterase deficiency ? | Pseudocholinesterase deficiency is a condition that results in increased sensitivity to certain muscle relaxant drugs used during general anesthesia, called choline esters. These fast-acting drugs, such as succinylcholine and mivacurium, are given to relax the muscles used for movement (skeletal muscles), including the... |
frequency | How many people are affected by pseudocholinesterase deficiency ? | Pseudocholinesterase deficiency occurs in 1 in 3,200 to 1 in 5,000 people. It is more common in certain populations, such as the Persian Jewish community and Alaska Natives. |
genetic changes | What are the genetic changes related to pseudocholinesterase deficiency ? | Pseudocholinesterase deficiency can be caused by mutations in the BCHE gene. This gene provides instructions for making the pseudocholinesterase enzyme, also known as butyrylcholinesterase, which is produced by the liver and circulates in the blood. The pseudocholinesterase enzyme is involved in the breakdown of cholin... |
inheritance | Is pseudocholinesterase deficiency inherited ? | When due to genetic causes, this condition is inherited in an autosomal recessive pattern, which means both copies of the gene in each cell have mutations. Most often, the parents of an individual with an autosomal recessive disorder have one copy of the altered gene in each cell and are called carriers. They can pass ... |
treatment | What are the treatments for pseudocholinesterase deficiency ? | These resources address the diagnosis or management of pseudocholinesterase deficiency: - MedlinePlus Encyclopedia: Cholinesterase (blood test) These resources from MedlinePlus offer information about the diagnosis and management of various health conditions: - Diagnostic Tests - Drug Therapy - Surgery and Rehabi... |
information | What is (are) Tourette syndrome ? | Tourette syndrome is a complex disorder characterized by repetitive, sudden, and involuntary movements or noises called tics. Tics usually appear in childhood, and their severity varies over time. In most cases, tics become milder and less frequent in late adolescence and adulthood. Tourette syndrome involves both mot... |
frequency | How many people are affected by Tourette syndrome ? | Although the exact incidence of Tourette syndrome is uncertain, it is estimated to affect 1 to 10 in 1,000 children. This disorder occurs in populations and ethnic groups worldwide, and it is more common in males than in females. |
genetic changes | What are the genetic changes related to Tourette syndrome ? | A variety of genetic and environmental factors likely play a role in causing Tourette syndrome. Most of these factors are unknown, and researchers are studying risk factors before and after birth that may contribute to this complex disorder. Scientists believe that tics may result from changes in brain chemicals (neuro... |
inheritance | Is Tourette syndrome inherited ? | The inheritance pattern of Tourette syndrome is unclear. Although the features of this condition can cluster in families, many genetic and environmental factors are likely to be involved. Among family members of an affected person, it is difficult to predict who else may be at risk of developing the condition. Tourett... |
treatment | What are the treatments for Tourette syndrome ? | These resources address the diagnosis or management of Tourette syndrome: - Gene Review: Gene Review: Tourette Disorder Overview - Genetic Testing Registry: Tourette Syndrome - MedlinePlus Encyclopedia: Gilles de la Tourette syndrome These resources from MedlinePlus offer information about the diagnosis and manage... |
information | What is (are) fibrodysplasia ossificans progressiva ? | Fibrodysplasia ossificans progressiva (FOP) is a disorder in which muscle tissue and connective tissue such as tendons and ligaments are gradually replaced by bone (ossified), forming bone outside the skeleton (extra-skeletal or heterotopic bone) that constrains movement. This process generally becomes noticeable in ea... |
frequency | How many people are affected by fibrodysplasia ossificans progressiva ? | Fibrodysplasia ossificans progressiva is a very rare disorder, believed to occur in approximately 1 in 2 million people worldwide. Several hundred cases have been reported. |
genetic changes | What are the genetic changes related to fibrodysplasia ossificans progressiva ? | Mutations in the ACVR1 gene cause fibrodysplasia ossificans progressiva. The ACVR1 gene provides instructions for producing a member of a protein family called bone morphogenetic protein (BMP) type I receptors. The ACVR1 protein is found in many tissues of the body including skeletal muscle and cartilage. It helps to ... |
inheritance | Is fibrodysplasia ossificans progressiva inherited ? | This condition is inherited in an autosomal dominant pattern, which means one copy of the altered gene in each cell is sufficient to cause the disorder. Most cases of fibrodysplasia ossificans progressiva result from new mutations in the gene. These cases occur in people with no history of the disorder in their family... |
treatment | What are the treatments for fibrodysplasia ossificans progressiva ? | These resources address the diagnosis or management of fibrodysplasia ossificans progressiva: - Genetic Testing Registry: Progressive myositis ossificans These resources from MedlinePlus offer information about the diagnosis and management of various health conditions: - Diagnostic Tests - Drug Therapy - Surgery ... |
information | What is (are) adenosine monophosphate deaminase deficiency ? | Adenosine monophosphate (AMP) deaminase deficiency is a condition that can affect the muscles used for movement (skeletal muscles). People with this condition do not make enough of an enzyme called AMP deaminase. In most people, AMP deaminase deficiency does not cause any symptoms. People who do experience symptoms typ... |
frequency | How many people are affected by adenosine monophosphate deaminase deficiency ? | AMP deaminase deficiency is one of the most common inherited muscle disorders in white populations, affecting 1 in 50 to 100 people. The prevalence is lower in African Americans, affecting an estimated 1 in 40,000 people, and the condition is even less common in the Japanese population. |
genetic changes | What are the genetic changes related to adenosine monophosphate deaminase deficiency ? | Mutations in the AMPD1 gene cause AMP deaminase deficiency. The AMPD1 gene provides instructions for producing an enzyme called AMP deaminase. This enzyme is found in skeletal muscle, where it plays a role in producing energy within muscle cells. Mutations in the AMPD1 gene disrupt the function of AMP deaminase and imp... |
inheritance | Is adenosine monophosphate deaminase deficiency inherited ? | This condition is inherited in an autosomal recessive pattern, which means both copies of the gene in each cell have mutations. The parents of an individual with an autosomal recessive condition each carry one copy of the mutated gene, but they typically do not show signs and symptoms of the condition. |
treatment | What are the treatments for adenosine monophosphate deaminase deficiency ? | These resources address the diagnosis or management of adenosine monophosphate deaminase deficiency: - MedlinePlus Encyclopedia: Muscle aches - MedlinePlus Encyclopedia: Weakness These resources from MedlinePlus offer information about the diagnosis and management of various health conditions: - Diagnostic Tests ... |
information | What is (are) Snyder-Robinson syndrome ? | Snyder-Robinson syndrome is a condition characterized by intellectual disability, muscle and bone abnormalities, and other problems with development. It occurs exclusively in males. Males with Snyder-Robinson syndrome have delayed development and intellectual disability beginning in early childhood. The intellectual d... |
frequency | How many people are affected by Snyder-Robinson syndrome ? | Snyder-Robinson syndrome is a rare condition; its prevalence is unknown. About 10 affected families have been identified worldwide. |
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