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What are the genetic changes related to pontocerebellar hypoplasia ? | Pontocerebellar hypoplasia can result from mutations in several genes. About half of all cases of PCH1 are caused by mutations in the EXOSC3 gene. PCH1 can also result from mutations in several other genes, including TSEN54, RARS2, and VRK1. PCH2 is caused by mutations in the TSEN54, TSEN2, TSEN34, or SEPSECS gene. In ... |
Is pontocerebellar hypoplasia 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. |
What are the treatments for pontocerebellar hypoplasia ? | These resources address the diagnosis or management of pontocerebellar hypoplasia: - Gene Review: Gene Review: EXOSC3-Related Pontocerebellar Hypoplasia - Gene Review: Gene Review: TSEN54-Related Pontocerebellar Hypoplasia - Genetic Testing Registry: Pontoneocerebellar hypoplasia - MedlinePlus Encyclopedia: Microce... |
What is (are) piebaldism ? | Piebaldism is a condition characterized by the absence of cells called melanocytes in certain areas of the skin and hair. Melanocytes produce the pigment melanin, which contributes to hair, eye, and skin color. The absence of melanocytes leads to patches of skin and hair that are lighter than normal. Approximately 90 p... |
How many people are affected by piebaldism ? | The prevalence of piebaldism is unknown. |
What are the genetic changes related to piebaldism ? | Piebaldism can be caused by mutations in the KIT and SNAI2 genes. Piebaldism may also be a feature of other conditions, such as Waardenburg syndrome; these conditions have other genetic causes and additional signs and symptoms. The KIT gene provides instructions for making a protein that is involved in signaling withi... |
Is piebaldism 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. |
What are the treatments for piebaldism ? | These resources address the diagnosis or management of piebaldism: - Genetic Testing Registry: Partial albinism These resources from MedlinePlus offer information about the diagnosis and management of various health conditions: - Diagnostic Tests - Drug Therapy - Surgery and Rehabilitation - Genetic Counseling ... |
What is (are) rheumatoid arthritis ? | Rheumatoid arthritis is a disease that causes chronic abnormal inflammation, primarily affecting the joints. The most common signs and symptoms are pain, swelling, and stiffness of the joints. Small joints in the hands and feet are involved most often, although larger joints (such as the shoulders, hips, and knees) may... |
How many people are affected by rheumatoid arthritis ? | Rheumatoid arthritis affects about 1.3 million adults in the United States. Worldwide, it is estimated to occur in up to 1 percent of the population. The disease is two to three times more common in women than in men, which may be related to hormonal factors. |
What are the genetic changes related to rheumatoid arthritis ? | Rheumatoid arthritis probably results from a combination of genetic and environmental factors, many of which are unknown. Rheumatoid arthritis is classified as an autoimmune disorder, one of a large group of conditions that occur when the immune system attacks the body's own tissues and organs. In people with rheumato... |
Is rheumatoid arthritis inherited ? | The inheritance pattern of rheumatoid arthritis is unclear because many genetic and environmental factors appear to be involved. However, having a close relative with rheumatoid arthritis likely increases a person's risk of developing the condition. |
What are the treatments for rheumatoid arthritis ? | These resources address the diagnosis or management of rheumatoid arthritis: - American College of Rheumatology: ACR-Endorsed Criteria for Rheumatic Diseases - American College of Rheumatology: Treatment for Rheumatic Diseases - Genetic Testing Registry: Rheumatoid arthritis These resources from MedlinePlus offer ... |
What is (are) cranioectodermal dysplasia ? | Cranioectodermal dysplasia is a disorder that affects many parts of the body. The most common features involve bone abnormalities and abnormal development of certain tissues known as ectodermal tissues, which include the skin, hair, nails, and teeth. The signs and symptoms of this condition vary among affected individu... |
How many people are affected by cranioectodermal dysplasia ? | Cranioectodermal dysplasia is a rare condition with an unknown prevalence. Approximately 40 cases of this condition have been described in the medical literature. |
What are the genetic changes related to cranioectodermal dysplasia ? | Cranioectodermal dysplasia is caused by mutations in one of at least four genes: the WDR35, IFT122, WDR19, or IFT43 gene. The protein produced from each of these genes is one piece (subunit) of a protein complex called IFT complex A (IFT-A). This complex is found in finger-like structures called cilia that stick out fr... |
Is cranioectodermal dysplasia 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. |
What are the treatments for cranioectodermal dysplasia ? | These resources address the diagnosis or management of cranioectodermal dysplasia: - Gene Review: Gene Review: Cranioectodermal Dysplasia - Genetic Testing Registry: Cranioectodermal dysplasia 1 - Genetic Testing Registry: Cranioectodermal dysplasia 2 - Genetic Testing Registry: Cranioectodermal dysplasia 3 - Gene... |
What is (are) hereditary angiopathy with nephropathy, aneurysms, and muscle cramps syndrome ? | Hereditary angiopathy with nephropathy, aneurysms, and muscle cramps (HANAC) syndrome is part of a group of conditions called the COL4A1-related disorders. The conditions in this group have a range of signs and symptoms that involve fragile blood vessels. HANAC syndrome is characterized by angiopathy, which is a disord... |
How many people are affected by hereditary angiopathy with nephropathy, aneurysms, and muscle cramps syndrome ? | HANAC syndrome is a rare condition, although the exact prevalence is unknown. At least six affected families have been described in the scientific literature. |
What are the genetic changes related to hereditary angiopathy with nephropathy, aneurysms, and muscle cramps syndrome ? | Mutations in the COL4A1 gene cause HANAC syndrome. The COL4A1 gene provides instructions for making one component of a protein called type IV collagen. Type IV collagen molecules attach to each other to form complex protein networks. These protein networks are the main component of basement membranes, which are thin sh... |
Is hereditary angiopathy with nephropathy, aneurysms, and muscle cramps 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. |
What are the treatments for hereditary angiopathy with nephropathy, aneurysms, and muscle cramps syndrome ? | These resources address the diagnosis or management of HANAC syndrome: - Gene Review: Gene Review: COL4A1-Related Disorders - Genetic Testing Registry: Angiopathy, hereditary, with nephropathy, aneurysms, and muscle cramps These resources from MedlinePlus offer information about the diagnosis and management of vari... |
What is (are) potassium-aggravated myotonia ? | Potassium-aggravated myotonia is a disorder that affects muscles used for movement (skeletal muscles). Beginning in childhood or adolescence, people with this condition experience bouts of sustained muscle tensing (myotonia) that prevent muscles from relaxing normally. Myotonia causes muscle stiffness that worsens afte... |
How many people are affected by potassium-aggravated myotonia ? | This condition appears to be rare; it has been reported in only a few individuals and families worldwide. |
What are the genetic changes related to potassium-aggravated myotonia ? | Mutations in the SCN4A gene cause potassium-aggravated myotonia. The SCN4A gene provides instructions for making a protein that is critical for the normal function of skeletal muscle cells. For the body to move normally, skeletal muscles must tense (contract) and relax in a coordinated way. Muscle contractions are tri... |
Is potassium-aggravated myotonia inherited ? | Potassium-aggravated myotonia 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 some cases, an affected person inherits a mutation in the SCN4A gene from one affected parent. Other cases result from new mutations in the gene. The... |
What are the treatments for potassium-aggravated myotonia ? | These resources address the diagnosis or management of potassium-aggravated myotonia: - Genetic Testing Registry: Potassium aggravated myotonia These resources from MedlinePlus offer information about the diagnosis and management of various health conditions: - Diagnostic Tests - Drug Therapy - Surgery and Rehabi... |
What is (are) Miller-Dieker syndrome ? | Miller-Dieker syndrome is a condition characterized by a pattern of abnormal brain development known as lissencephaly. Normally the exterior of the brain (cerebral cortex) is multi-layered with folds and grooves. People with lissencephaly have an abnormally smooth brain with fewer folds and grooves. These brain malform... |
How many people are affected by Miller-Dieker syndrome ? | Miller-Dieker syndrome appears to be a rare disorder, although its prevalence is unknown. |
What are the genetic changes related to Miller-Dieker syndrome ? | Miller-Dieker syndrome is caused by a deletion of genetic material near the end of the short (p) arm of chromosome 17. The signs and symptoms of Miller-Dieker syndrome are probably related to the loss of multiple genes in this region. The size of the deletion varies among affected individuals. Researchers are working ... |
Is Miller-Dieker syndrome inherited ? | Most cases of Miller-Dieker syndrome are not inherited. The deletion occurs most often as a random event during the formation of reproductive cells (eggs or sperm) or in early fetal development. Affected people typically have no history of the disorder in their family. When Miller-Dieker syndrome is inherited, its inh... |
What are the treatments for Miller-Dieker syndrome ? | These resources address the diagnosis or management of Miller-Dieker syndrome: - Gene Review: Gene Review: LIS1-Associated Lissencephaly/Subcortical Band Heterotopia - Genetic Testing Registry: Miller Dieker syndrome These resources from MedlinePlus offer information about the diagnosis and management of various he... |
What is (are) Stevens-Johnson syndrome/toxic epidermal necrolysis ? | Stevens-Johnson syndrome/toxic epidermal necrolysis (SJS/TEN) is a severe skin reaction most often triggered by particular medications. Although Stevens-Johnson syndrome and toxic epidermal necrolysis were once thought to be separate conditions, they are now considered part of a continuum. Stevens-Johnson syndrome repr... |
How many people are affected by Stevens-Johnson syndrome/toxic epidermal necrolysis ? | SJS/TEN is a rare disease, affecting 1 to 2 per million people each year. Stevens-Johnson syndrome (the less severe form of the condition) is more common than toxic epidermal necrolysis. People who are HIV-positive and those with a chronic inflammatory disease called systemic lupus erythematosus are more likely to dev... |
What are the genetic changes related to Stevens-Johnson syndrome/toxic epidermal necrolysis ? | Several genetic changes have been found to increase the risk of SJS/TEN in response to triggering factors such as medications. Most of these changes occur in genes that are involved in the normal function of the immune system. The genetic variations most strongly associated with SJS/TEN occur in the HLA-B gene. This g... |
Is Stevens-Johnson syndrome/toxic epidermal necrolysis inherited ? | SJS/TEN is not an inherited condition. However, the genetic changes that increase the risk of developing SJS/TEN can be passed from one generation to the next. |
What are the treatments for Stevens-Johnson syndrome/toxic epidermal necrolysis ? | These resources address the diagnosis or management of Stevens-Johnson syndrome/toxic epidermal necrolysis: - Genetic Testing Registry: Stevens-Johnson syndrome - Genetic Testing Registry: Toxic epidermal necrolysis These resources from MedlinePlus offer information about the diagnosis and management of various hea... |
What is (are) polymicrogyria ? | Polymicrogyria is a condition characterized by abnormal development of the brain before birth. The surface of the brain normally has many ridges or folds, called gyri. In people with polymicrogyria, the brain develops too many folds, and the folds are unusually small. The name of this condition literally means too many... |
How many people are affected by polymicrogyria ? | The prevalence of isolated polymicrogyria is unknown. Researchers believe that it may be relatively common overall, although the individual forms of the disorder (such as bilateral generalized polymicrogyria) are probably rare. |
What are the genetic changes related to polymicrogyria ? | In most people with polymicrogyria, the cause of the condition is unknown. However, researchers have identified several environmental and genetic factors that can be responsible for the disorder. Environmental causes of polymicrogyria include certain infections during pregnancy and a lack of oxygen to the fetus (intrau... |
Is polymicrogyria inherited ? | Isolated polymicrogyria can have different inheritance patterns. Several forms of the condition, including bilateral frontoparietal polymicrogyria (which is associated with mutations in the ADGRG1 gene), have an autosomal recessive pattern of inheritance. In autosomal recessive inheritance, both copies of the gene in e... |
What are the treatments for polymicrogyria ? | These resources address the diagnosis or management of polymicrogyria: - Gene Review: Gene Review: Polymicrogyria Overview - Genetic Testing Registry: Congenital bilateral perisylvian syndrome - Genetic Testing Registry: Polymicrogyria, asymmetric - Genetic Testing Registry: Polymicrogyria, bilateral frontoparietal... |
What is (are) Coats plus syndrome ? | Coats plus syndrome is an inherited condition characterized by an eye disorder called Coats disease plus abnormalities of the brain, bones, gastrointestinal system, and other parts of the body. Coats disease affects the retina, which is the tissue at the back of the eye that detects light and color. The disorder cause... |
How many people are affected by Coats plus syndrome ? | Coats plus syndrome appears to be a rare disorder. Its prevalence is unknown. |
What are the genetic changes related to Coats plus syndrome ? | Coats plus syndrome results from mutations in the CTC1 gene. This gene provides instructions for making a protein that plays an important role in structures known as telomeres, which are found at the ends of chromosomes. Telomeres are short, repetitive segments of DNA that help protect chromosomes from abnormally stick... |
Is Coats plus 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. |
What are the treatments for Coats plus syndrome ? | These resources address the diagnosis or management of Coats plus syndrome: - Genetic Testing Registry: Cerebroretinal microangiopathy with calcifications and cysts These resources from MedlinePlus offer information about the diagnosis and management of various health conditions: - Diagnostic Tests - Drug Therapy ... |
What is (are) factor X deficiency ? | Factor X deficiency is a rare bleeding disorder that varies in severity among affected individuals. The signs and symptoms of this condition can begin at any age, although the most severe cases are apparent in childhood. Factor X deficiency commonly causes nosebleeds, easy bruising, bleeding under the skin, bleeding of... |
How many people are affected by factor X deficiency ? | Factor X deficiency occurs in approximately 1 per million individuals worldwide. |
What are the genetic changes related to factor X deficiency ? | The inherited form of factor X deficiency, known as congenital factor X deficiency, is caused by mutations in the F10 gene, which provides instructions for making a protein called coagulation factor X. This protein plays a critical role in the coagulation system, which is a series of chemical reactions that forms blood... |
Is factor X deficiency inherited ? | When this condition is caused by mutations in the F10 gene, it 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... |
What are the treatments for factor X deficiency ? | These resources address the diagnosis or management of factor X deficiency: - Genetic Testing Registry: Factor X deficiency - MedlinePlus Encyclopedia: Factor X Assay These resources from MedlinePlus offer information about the diagnosis and management of various health conditions: - Diagnostic Tests - Drug Thera... |
What is (are) benign recurrent intrahepatic cholestasis ? | Benign recurrent intrahepatic cholestasis (BRIC) is characterized by episodes of liver dysfunction called cholestasis. During these episodes, the liver cells have a reduced ability to release a digestive fluid called bile. Because the problems with bile release occur within the liver (intrahepatic), the condition is de... |
How many people are affected by benign recurrent intrahepatic cholestasis ? | BRIC is a rare disorder. Although the prevalence is unknown, this condition is less common than the related disorder PFIC, which affects approximately 1 in 50,000 to 100,000 people worldwide. |
What are the genetic changes related to benign recurrent intrahepatic cholestasis ? | Mutations in the ATP8B1 gene cause benign recurrent intrahepatic cholestasis type 1 (BRIC1), and mutations in the ABCB11 gene cause benign recurrent intrahepatic cholestasis type 2 (BRIC2). These two genes are involved in the release (secretion) of bile, a fluid produced by the liver that helps digest fats. The ATP8B1... |
Is benign recurrent intrahepatic cholestasis inherited ? | Both types of BRIC are 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. Some peopl... |
What are the treatments for benign recurrent intrahepatic cholestasis ? | These resources address the diagnosis or management of benign recurrent intrahepatic cholestasis: - Gene Review: Gene Review: ATP8B1 Deficiency - Genetic Testing Registry: Benign recurrent intrahepatic cholestasis 1 - Genetic Testing Registry: Benign recurrent intrahepatic cholestasis 2 - Merck Manual Home Health E... |
What is (are) purine nucleoside phosphorylase deficiency ? | Purine nucleoside phosphorylase deficiency is one of several disorders that damage the immune system and cause severe combined immunodeficiency (SCID). People with SCID lack virtually all immune protection from foreign invaders such as bacteria, viruses, and fungi. Affected individuals are prone to repeated and persist... |
How many people are affected by purine nucleoside phosphorylase deficiency ? | Purine nucleoside phosphorylase deficiency is rare; only about 70 affected individuals have been identified. This disorder accounts for approximately 4 percent of all SCID cases. |
What are the genetic changes related to purine nucleoside phosphorylase deficiency ? | Purine nucleoside phosphorylase deficiency is caused by mutations in the PNP gene. The PNP gene provides instructions for making an enzyme called purine nucleoside phosphorylase. This enzyme is found throughout the body but is most active in specialized white blood cells called lymphocytes. These cells protect the body... |
Is purine nucleoside phosphorylase 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. |
What are the treatments for purine nucleoside phosphorylase deficiency ? | These resources address the diagnosis or management of purine nucleoside phosphorylase deficiency: - Baby's First Test: Severe Combined Immunodeficiency - Genetic Testing Registry: Purine-nucleoside phosphorylase deficiency - National Marrow Donor Program These resources from MedlinePlus offer information about th... |
What is (are) giant congenital melanocytic nevus ? | Giant congenital melanocytic nevus is a skin condition characterized by an abnormally dark, noncancerous skin patch (nevus) that is composed of pigment-producing cells called melanocytes. It is present from birth (congenital) or is noticeable soon after birth. The nevus may be small in infants, but it will usually grow... |
How many people are affected by giant congenital melanocytic nevus ? | Giant congenital melanocytic nevus occurs in approximately 1 in 20,000 newborns worldwide. |
What are the genetic changes related to giant congenital melanocytic nevus ? | NRAS gene mutations cause most cases of giant congenital melanocytic nevus. Rarely, mutations in the BRAF gene are responsible for this condition. The proteins produced from these genes are involved in a process known as signal transduction by which signals are relayed from outside the cell to the cell's nucleus. Sign... |
Is giant congenital melanocytic nevus inherited ? | This condition is generally not inherited but arises from a mutation in the body's cells that occurs after conception. This alteration is called a somatic mutation. A somatic mutation in one copy of the NRAS or BRAF gene is sufficient to cause this disorder. |
What are the treatments for giant congenital melanocytic nevus ? | These resources address the diagnosis or management of giant congenital melanocytic nevus: - Cleveland Clinic: The Facts About Melanoma - Genetic Testing Registry: Giant pigmented hairy nevus - MedlinePlus Encyclopedia: Giant Congenital Nevus - Nevus Outreach: Treatment Options - Primary Care Dermatology Society ... |
What is (are) Pol III-related leukodystrophy ? | Pol III-related leukodystrophy is a disorder that affects the nervous system and other parts of the body. Leukodystrophies are conditions that involve abnormalities of the nervous system's white matter, which consists of nerve fibers covered by a fatty substance called myelin. Myelin insulates nerve fibers and promotes... |
How many people are affected by Pol III-related leukodystrophy ? | Pol III-related leukodystrophy is a rare disorder; its prevalence is unknown. Only about 40 cases have been described in the medical literature. However, researchers believe that a significant percentage of people with an unspecified hypomyelinating leukodystrophy could have Pol III-related leukodystrophy. |
What are the genetic changes related to Pol III-related leukodystrophy ? | Pol III-related leukodystrophy is caused by mutations in the POLR3A or POLR3B gene. These genes provide instructions for making the two largest parts (subunits) of an enzyme called RNA polymerase III. This enzyme is involved in the production (synthesis) of ribonucleic acid (RNA), a chemical cousin of DNA. The RNA poly... |
Is Pol III-related leukodystrophy 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. |
What are the treatments for Pol III-related leukodystrophy ? | These resources address the diagnosis or management of Pol III-related leukodystrophy: - Eastman Dental Hospital: Hypodontia Clinic - Gene Review: Gene Review: Pol III-Related Leukodystrophies - Genetic Testing Registry: Pol III-related leukodystrophy - Johns Hopkins Medicine: Treating Ataxia - National Ataxia Fou... |
What is (are) Waardenburg syndrome ? | Waardenburg syndrome is a group of genetic conditions that can cause hearing loss and changes in coloring (pigmentation) of the hair, skin, and eyes. Although most people with Waardenburg syndrome have normal hearing, moderate to profound hearing loss can occur in one or both ears. The hearing loss is present from birt... |
How many people are affected by Waardenburg syndrome ? | Waardenburg syndrome affects an estimated 1 in 40,000 people. It accounts for 2 to 5 percent of all cases of congenital hearing loss. Types I and II are the most common forms of Waardenburg syndrome, while types III and IV are rare. |
What are the genetic changes related to Waardenburg syndrome ? | Mutations in the EDN3, EDNRB, MITF, PAX3, SNAI2, and SOX10 genes can cause Waardenburg syndrome. These genes are involved in the formation and development of several types of cells, including pigment-producing cells called melanocytes. Melanocytes make a pigment called melanin, which contributes to skin, hair, and eye ... |
Is Waardenburg syndrome inherited ? | Waardenburg syndrome is usually 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 condition. A small percentage of cases result from new mutations in the gene; these cases occur... |
What are the treatments for Waardenburg syndrome ? | These resources address the diagnosis or management of Waardenburg syndrome: - Gene Review: Gene Review: Waardenburg Syndrome Type I - Genetic Testing Registry: Klein-Waardenberg's syndrome - Genetic Testing Registry: Waardenburg syndrome type 1 - Genetic Testing Registry: Waardenburg syndrome type 2A - Genetic Te... |
What is (are) optic atrophy type 1 ? | Optic atrophy type 1 is a condition that affects vision. Individuals with this condition have progressive vision loss that typically begins within the first decade of life. The severity of the vision loss varies widely among affected people, even among members of the same family. People with this condition can range fr... |
How many people are affected by optic atrophy type 1 ? | Optic atrophy type 1 is estimated to affect 1 in 50,000 people worldwide. This condition is more common in Denmark, where it affects approximately 1 in 10,000 people. |
What are the genetic changes related to optic atrophy type 1 ? | Optic atrophy type 1 is caused by mutations in the OPA1 gene. The protein produced from this gene is made in many types of cells and tissues throughout the body. The OPA1 protein is found inside mitochondria, which are the energy-producing centers of cells. The OPA1 protein plays a key role in the organization of the s... |
Is optic atrophy type 1 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. |
What are the treatments for optic atrophy type 1 ? | These resources address the diagnosis or management of optic atrophy type 1: - Gene Review: Gene Review: Optic Atrophy Type 1 - Genetic Testing Registry: Dominant hereditary optic atrophy - MedlinePlus Encyclopedia: Optic Nerve Atrophy - MedlinePlus Encyclopedia: Visual Acuity Test These resources from MedlinePlu... |
What is (are) T-cell immunodeficiency, congenital alopecia, and nail dystrophy ? | T-cell immunodeficiency, congenital alopecia, and nail dystrophy is a type of severe combined immunodeficiency (SCID), which is a group of disorders characterized by an almost total lack of immune protection from foreign invaders such as bacteria and viruses. People with this form of SCID are missing functional immune ... |
How many people are affected by T-cell immunodeficiency, congenital alopecia, and nail dystrophy ? | T-cell immunodeficiency, congenital alopecia, and nail dystrophy is a rare disorder. It has been diagnosed in only a few individuals, almost all of whom are members of a large extended family from a community in southern Italy. |
What are the genetic changes related to T-cell immunodeficiency, congenital alopecia, and nail dystrophy ? | T-cell immunodeficiency, congenital alopecia, and nail dystrophy results from mutations in the FOXN1 gene. This gene provides instructions for making a protein that is important for development of the skin, hair, nails, and immune system. Studies suggest that this protein helps guide the formation of hair follicles and... |
Is T-cell immunodeficiency, congenital alopecia, and nail dystrophy 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. However, some pe... |
What are the treatments for T-cell immunodeficiency, congenital alopecia, and nail dystrophy ? | These resources address the diagnosis or management of T-cell immunodeficiency, congenital alopecia, and nail dystrophy: - Be The Match: What is a Bone Marrow Transplant? - Genetic Testing Registry: T-cell immunodeficiency, congenital alopecia and nail dystrophy - MedlinePlus Encyclopedia: Bone Marrow Transplant T... |
What is (are) congenital diaphragmatic hernia ? | Congenital diaphragmatic hernia is a defect in the diaphragm. The diaphragm, which is composed of muscle and other fibrous tissue, separates the organs in the abdomen from those in the chest. Abnormal development of the diaphragm before birth leads to defects ranging from a thinned area in the diaphragm to its complete... |
How many people are affected by congenital diaphragmatic hernia ? | Congenital diaphragmatic hernia affects approximately 1 in 2,500 newborns. |
What are the genetic changes related to congenital diaphragmatic hernia ? | Congenital diaphragmatic hernia has many different causes. In 10 to 15 percent of affected individuals, the condition appears as a feature of a disorder that affects many body systems, called a syndrome. Donnai-Barrow syndrome, Fryns syndrome, and Pallister-Killian mosaic syndrome are among several syndromes in which c... |
Is congenital diaphragmatic hernia inherited ? | Isolated congenital diaphragmatic hernia is rarely inherited. In almost all cases, there is only one affected individual in a family. When congenital diaphragmatic hernia occurs as a feature of a genetic syndrome or chromosomal abnormality, it may cluster in families according to the inheritance pattern for that condi... |
What are the treatments for congenital diaphragmatic hernia ? | These resources address the diagnosis or management of congenital diaphragmatic hernia: - Boston Children's Hospital - Children's Hospital of Philadelphia - Columbia University Medical Center: DHREAMS - Columbia University Medical Center: Hernia Repair - Gene Review: Gene Review: Congenital Diaphragmatic Hernia Ov... |
What is (are) craniofacial microsomia ? | Craniofacial microsomia is a term used to describe a spectrum of abnormalities that primarily affect the development of the skull (cranium) and face before birth. Microsomia means abnormal smallness of body structures. Most people with craniofacial microsomia have differences in the size and shape of facial structures ... |
How many people are affected by craniofacial microsomia ? | Craniofacial microsomia has been estimated to occur in between 1 in 5,600 and 1 in 26,550 newborns. However, this range may be an underestimate because not all medical professionals agree on the criteria for diagnosis of this condition, and because mild cases may never come to medical attention. For reasons that are un... |
What are the genetic changes related to craniofacial microsomia ? | It is unclear what genes are involved in craniofacial microsomia. This condition results from problems in the development of structures in the embryo called the first and second pharyngeal arches (also called branchial or visceral arches). Tissue layers in the six pairs of pharyngeal arches give rise to the muscles, ar... |
Is craniofacial microsomia inherited ? | Craniofacial microsomia most often occurs in a single individual in a family and is not inherited. If the condition is caused by a chromosomal abnormality, it may be inherited from one affected parent or it may result from a new abnormality in the chromosome and occur in people with no history of the disorder in their ... |
What are the treatments for craniofacial microsomia ? | These resources address the diagnosis or management of craniofacial microsomia: - Children's Hospital and Medical Center of the University of Nebraska - Gene Review: Gene Review: Craniofacial Microsomia Overview - Genetic Testing Registry: Goldenhar syndrome - Seattle Children's Hospital - Virginia Commonwealth Un... |
What is (are) intrauterine growth restriction, metaphyseal dysplasia, adrenal hypoplasia congenita, and genital anomalies ? | The combination of intrauterine growth restriction, metaphyseal dysplasia, adrenal hypoplasia congenita, and genital anomalies is commonly known by the acronym IMAGe. This rare syndrome has signs and symptoms that affect many parts of the body. Most affected individuals grow slowly before birth (intrauterine growth re... |
How many people are affected by intrauterine growth restriction, metaphyseal dysplasia, adrenal hypoplasia congenita, and genital anomalies ? | IMAGe syndrome is very rare, with only about 20 cases reported in the medical literature. The condition has been diagnosed more often in males than in females, probably because females do not have associated genital abnormalities. |
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