sarnsrun/medquad huggingface dataset:
Topic: paramyotonia congenita
Question: What are the genetic changes related to paramyotonia congenita ?
Answer: Mutations in the SCN4A gene cause paramyotonia congenita. This 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 triggered by the flow of positively charged atoms (ions), including sodium, into skeletal muscle cells. The SCN4A protein forms channels that control the flow of sodium ions into these cells.  Mutations in the SCN4A gene alter the usual structure and function of sodium channels. The altered channels cannot effectively regulate the flow of sodium ions into skeletal muscle cells. The resulting increase in ion flow interferes with normal muscle contraction and relaxation, leading to episodes of muscle stiffness and weakness.
Source: GHR
Topic: paramyotonia congenita
Question: Is paramyotonia congenita inherited ?
Answer: 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 many cases, an affected person has one parent with the condition.
Source: GHR
Topic: paramyotonia congenita
Question: What are the treatments for paramyotonia congenita ?
Answer: These resources address the diagnosis or management of paramyotonia congenita:  - Genetic Testing Registry: Paramyotonia congenita of von Eulenburg  - Periodic Paralysis International: How is Periodic Paralysis Diagnosed?   These resources from MedlinePlus offer information about the diagnosis and management of various health conditions:  - Diagnostic Tests  - Drug Therapy  - Surgery and Rehabilitation  - Genetic Counseling   - Palliative Care
Source: GHR
Topic: cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy
Question: What is (are) cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy ?
Answer: Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy, usually called CADASIL, is an inherited condition that causes stroke and other impairments. This condition affects blood flow in small blood vessels, particularly cerebral vessels within the brain. The muscle cells surrounding these blood vessels (vascular smooth muscle cells) are abnormal and gradually die. In the brain, the resulting blood vessel damage (arteriopathy) can cause migraines, often with visual sensations or auras, or recurrent seizures (epilepsy).  Damaged blood vessels reduce blood flow and can cause areas of tissue death (infarcts) throughout the body. An infarct in the brain can lead to a stroke. In individuals with CADASIL, a stroke can occur at any time from childhood to late adulthood, but typically happens during mid-adulthood. People with CADASIL often have more than one stroke in their lifetime. Recurrent strokes can damage the brain over time. Strokes that occur in the subcortical region of the brain, which is involved in reasoning and memory, can cause progressive loss of intellectual function (dementia) and changes in mood and personality.  Many people with CADASIL also develop leukoencephalopathy, which is a change in a type of brain tissue called white matter that can be seen with magnetic resonance imaging (MRI).  The age at which the signs and symptoms of CADASIL first begin varies greatly among affected individuals, as does the severity of these features.  CADASIL is not associated with the common risk factors for stroke and heart attack, such as high blood pressure and high cholesterol, although some affected individuals might also have these health problems.
Source: GHR
Topic: cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy
Question: How many people are affected by cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy ?
Answer: CADASIL is likely a rare condition; however, its prevalence is unknown.
Source: GHR
Topic: cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy
Question: What are the genetic changes related to cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy ?
Answer: Mutations in the NOTCH3 gene cause CADASIL. The NOTCH3 gene provides instructions for producing the Notch3 receptor protein, which is important for the normal function and survival of vascular smooth muscle cells. When certain molecules attach (bind) to Notch3 receptors, the receptors send signals to the nucleus of the cell. These signals then turn on (activate) particular genes within vascular smooth muscle cells.  NOTCH3 gene mutations lead to the production of an abnormal Notch3 receptor protein that impairs the function and survival of vascular smooth muscle cells. Disruption of Notch3 functioning can lead to the self-destruction (apoptosis) of these cells. In the brain, the loss of vascular smooth muscle cells results in blood vessel damage that can cause the signs and symptoms of CADASIL.
Source: GHR
Topic: cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy
Question: Is cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy inherited ?
Answer: This condition is inherited in an autosomal dominant pattern, which means one copy of the altered NOTCH3 gene in each cell is sufficient to cause the disorder.  In most cases, an affected person inherits the mutation from one affected parent. A few rare cases may result from new mutations in the NOTCH3 gene. These cases occur in people with no history of the disorder in their family.
Source: GHR
Topic: cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy
Question: What are the treatments for cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy ?
Answer: These resources address the diagnosis or management of CADASIL:  - Butler Hospital: Treatment and Management of CADASIL  - Gene Review: Gene Review: CADASIL  - Genetic Testing Registry: Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy  - MedlinePlus Encyclopedia: Multi-Infarct Dementia   These resources from MedlinePlus offer information about the diagnosis and management of various health conditions:  - Diagnostic Tests  - Drug Therapy  - Surgery and Rehabilitation  - Genetic Counseling   - Palliative Care
Source: GHR
Topic: dihydropyrimidine dehydrogenase deficiency
Question: What is (are) dihydropyrimidine dehydrogenase deficiency ?
Answer: Dihydropyrimidine dehydrogenase deficiency is a disorder characterized by a wide range of severity, with neurological problems in some individuals and no signs or symptoms in others.  In people with severe dihydropyrimidine dehydrogenase deficiency, the disorder becomes apparent in infancy. These affected individuals have neurological problems such as recurrent seizures (epilepsy), intellectual disability, a small head size (microcephaly), increased muscle tone (hypertonia), delayed development of motor skills such as walking, and autistic behaviors that affect communication and social interaction. Other affected individuals are asymptomatic, which means they do not have any signs or symptoms of the condition. Individuals with asymptomatic dihydropyrimidine dehydrogenase deficiency may be identified only by laboratory testing.  People with dihydropyrimidine dehydrogenase deficiency, including those who otherwise exhibit no symptoms, are vulnerable to severe, potentially life-threatening toxic reactions to certain drugs called fluoropyrimidines that are used to treat cancer. Common examples of these drugs are 5-fluorouracil and capecitabine. These drugs are not broken down efficiently by people with dihydropyrimidine dehydrogenase deficiency and build up to toxic levels in the body (fluoropyrimidine toxicity). Severe inflammation and ulceration of the lining of the gastrointestinal tract (mucositis) may occur, which can lead to signs and symptoms including mouth sores, abdominal pain, bleeding, nausea, vomiting, and diarrhea. Fluoropyrimidine toxicity may also lead to low numbers of white blood cells (neutropenia), which increases the risk of infections. It can also be associated with low numbers of platelets in the blood (thrombocytopenia), which impairs blood clotting and may lead to abnormal bleeding (hemorrhage). Redness, swelling, numbness, and peeling of the skin on the palms and soles (hand-foot syndrome); shortness of breath; and hair loss may also occur.
Source: GHR
Topic: dihydropyrimidine dehydrogenase deficiency
Question: How many people are affected by dihydropyrimidine dehydrogenase deficiency ?
Answer: Severe dihydropyrimidine dehydrogenase deficiency, with its early-onset neurological symptoms, is a rare disorder. Its prevalence is unknown. However, between 2 and 8 percent of the general population may be vulnerable to toxic reactions to fluoropyrimidine drugs caused by otherwise asymptomatic dihydropyrimidine dehydrogenase deficiency.
Source: GHR
Topic: dihydropyrimidine dehydrogenase deficiency
Question: What are the genetic changes related to dihydropyrimidine dehydrogenase deficiency ?
Answer: Dihydropyrimidine dehydrogenase deficiency is caused by mutations in the DPYD gene. This gene provides instructions for making an enzyme called dihydropyrimidine dehydrogenase, which is involved in the breakdown of molecules called uracil and thymine. Uracil and thymine are pyrimidines, which are one type of nucleotide. Nucleotides are building blocks of DNA, its chemical cousin RNA, and molecules such as ATP and GTP that serve as energy sources in the cell.  Mutations in the DPYD gene result in a lack (deficiency) of functional dihydropyrimidine dehydrogenase. Dihydropyrimidine dehydrogenase deficiency interferes with the breakdown of uracil and thymine, and results in excess quantities of these molecules in the blood, urine, and the fluid that surrounds the brain and spinal cord (cerebrospinal fluid). It is unclear how the excess uracil and thymine are related to the specific signs and symptoms of dihydropyrimidine dehydrogenase deficiency. Mutations that result in the absence (complete deficiency) of dihydropyrimidine dehydrogenase generally lead to more severe signs and symptoms than do mutations that lead to a partial deficiency of this enzyme.  Because fluoropyrimidine drugs are also broken down by the dihydropyrimidine dehydrogenase enzyme, deficiency of this enzyme leads to the drug buildup that causes fluoropyrimidine toxicity.
Source: GHR
Topic: dihydropyrimidine dehydrogenase deficiency
Question: Is dihydropyrimidine dehydrogenase deficiency inherited ?
Answer: Dihydropyrimidine dehydrogenase deficiency is inherited in an autosomal recessive pattern, which means both copies of the gene in each cell have mutations. Depending on the severity of these mutations, people with two mutated copies of the DPYD gene in each cell may exhibit the signs and symptoms of this disorder, or they may be generally asymptomatic but at risk for toxic reactions to fluoropyrimidine drugs.  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, people with one mutated copy of the DPYD gene in each cell may still experience toxic reactions to fluoropyrimidine drugs.
Source: GHR
Topic: dihydropyrimidine dehydrogenase deficiency
Question: What are the treatments for dihydropyrimidine dehydrogenase deficiency ?
Answer: These resources address the diagnosis or management of dihydropyrimidine dehydrogenase deficiency:  - Genetic Testing Registry: Dihydropyrimidine dehydrogenase deficiency   These resources from MedlinePlus offer information about the diagnosis and management of various health conditions:  - Diagnostic Tests  - Drug Therapy  - Surgery and Rehabilitation  - Genetic Counseling   - Palliative Care
Source: GHR
Topic: acromicric dysplasia
Question: What is (are) acromicric dysplasia ?
Answer: Acromicric dysplasia is a condition characterized by severely short stature, short limbs, stiff joints, and distinctive facial features.  Newborns with acromicric dysplasia are of normal size, but slow growth over time results in short stature. The average height of adults with this disorder is about 4 feet, 2 inches for women and 4 feet, 5 inches for men. The long bones of the arms and legs, and the bones in the hands and feet, are shorter than would be expected for the individual's height. Other skeletal features that occur in this disorder include slowed mineralization of bone (delayed bone age), abnormally shaped bones of the spine (vertebrae), and constrained movement of joints. Affected individuals often develop carpal tunnel syndrome, which is characterized by numbness, tingling, and weakness in the hands and fingers. A misalignment of the hip joints (hip dysplasia) can also occur in this disorder. These skeletal and joint problems may require treatment, but most affected individuals have few limitations in their activities.  Children with acromicric dysplasia may have a round face, sharply defined eyebrows, long eyelashes, a bulbous nose with upturned nostrils, a long space between the nose and upper lip (philtrum), and a small mouth with thick lips. These facial differences become less apparent in adulthood. Intelligence is unaffected in this disorder, and life expectancy is generally normal.
Source: GHR
Topic: acromicric dysplasia
Question: How many people are affected by acromicric dysplasia ?
Answer: Acromicric dysplasia is a rare disorder; its prevalence is unknown.
Source: GHR
Topic: acromicric dysplasia
Question: What are the genetic changes related to acromicric dysplasia ?
Answer: Acromicric dysplasia is caused by mutations in the FBN1 gene, which provides instructions for making a large protein called fibrillin-1. This protein is transported out of cells into the extracellular matrix, which is an intricate lattice of proteins and other molecules that forms in the spaces between cells. In this matrix, molecules of fibrillin-1 attach (bind) to each other and to other proteins to form threadlike filaments called microfibrils. The microfibrils become part of the fibers that provide strength and flexibility to connective tissues, which support the bones, skin, and other tissues and organs. Additionally, microfibrils store molecules called growth factors, including transforming growth factor beta (TGF-), and release them at various times to control the growth and repair of tissues and organs throughout the body.  Most of the FBN1 gene mutations that cause acromicric dysplasia change single protein building blocks in the fibrillin-1 protein. The mutations result in a reduction and disorganization of the microfibrils. Without enough normal microfibrils to store TGF-, the growth factor is abnormally active. These effects likely contribute to the physical abnormalities that occur in acromicric dysplasia, but the mechanisms are unclear.
Source: GHR
Topic: acromicric dysplasia
Question: Is acromicric dysplasia inherited ?
Answer: Acromicric dysplasia is an autosomal dominant condition, which means one copy of the altered gene in each cell is sufficient to cause the disorder. Most cases result from new mutations in the gene and occur in people with no history of the disorder in their family. In other cases, an affected person inherits the mutation from one affected parent.
Source: GHR
Topic: acromicric dysplasia
Question: What are the treatments for acromicric dysplasia ?
Answer: These resources address the diagnosis or management of acromicric dysplasia:  - Genetic Testing Registry: Acromicric dysplasia   These resources from MedlinePlus offer information about the diagnosis and management of various health conditions:  - Diagnostic Tests  - Drug Therapy  - Surgery and Rehabilitation  - Genetic Counseling   - Palliative Care
Source: GHR
Topic: cranioectodermal dysplasia
Question: What is (are) cranioectodermal dysplasia ?
Answer: 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 individuals, even among members of the same family.  Distinctive abnormalities of the skull and face are common in people with cranioectodermal dysplasia. Most affected individuals have a prominent forehead (frontal bossing) and an elongated head (dolichocephaly) due to abnormal fusion of certain skull bones (sagittal craniosynostosis). A variety of facial abnormalities can occur in people with this condition; these include low-set ears that may also be rotated backward, an increased distance between the inner corners of the eyes (telecanthus), and outside corners of the eyes that point upward or downward (upslanting or downslanting palpebral fissures) among others.  Development of bones in the rest of the skeleton is also affected in this condition. Abnormalities in the long bones of the arms and legs (metaphyseal dysplasia) lead to short limbs and short stature. In addition, affected individuals often have short fingers (brachydactyly). Some people with this condition have short rib bones and a narrow rib cage, which can cause breathing problems, especially in affected newborns.  Abnormal development of ectodermal tissues in people with cranioectodermal dysplasia can lead to sparse hair, small or missing teeth, short fingernails and toenails, and loose skin.  Cranioectodermal dysplasia can affect additional organs and tissues in the body. A kidney disorder known as nephronophthisis occurs in many people with this condition, and it can lead to a life-threatening failure of kidney function known as end-stage renal disease. Abnormalities of the liver, heart, or eyes also occur in people with cranioectodermal dysplasia.
Source: GHR
Topic: cranioectodermal dysplasia
Question: How many people are affected by cranioectodermal dysplasia ?
Answer: Cranioectodermal dysplasia is a rare condition with an unknown prevalence. Approximately 40 cases of this condition have been described in the medical literature.
Source: GHR
Topic: cranioectodermal dysplasia
Question: What are the genetic changes related to cranioectodermal dysplasia ?
Answer: 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 from the surface of cells. These structures are important for the development and function of many types of cells and tissues. The IFT-A complex is involved in a process called intraflagellar transport, which moves substances within cilia. This movement is essential for the assembly and maintenance of these structures. The IFT-A complex carries materials from the tip to the base of cilia.  Mutations in any of the four mentioned genes reduce the amount or function of one of the IFT-A subunits. Shortage or abnormal function of a single component of the IFT-A complex impairs the function of the entire complex, disrupting the assembly and maintenance of cilia. These mutations lead to a smaller number of cilia and to abnormalities in their shape and structure. Although the mechanism is unclear, a loss of normal cilia impedes proper development of bone, ectodermal tissues, and other tissues and organs, leading to the features of cranioectodermal dysplasia.  About 40 percent of people with cranioectodermal dysplasia have mutations in one of the four known genes. The cause of the condition in people without mutations in one of these genes is unknown.
Source: GHR
Topic: cranioectodermal dysplasia
Question: Is cranioectodermal dysplasia inherited ?
Answer: 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.
Source: GHR
Topic: cranioectodermal dysplasia
Question: What are the treatments for cranioectodermal dysplasia ?
Answer: 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  - Genetic Testing Registry: Cranioectodermal dysplasia 4   These resources from MedlinePlus offer information about the diagnosis and management of various health conditions:  - Diagnostic Tests  - Drug Therapy  - Surgery and Rehabilitation  - Genetic Counseling   - Palliative Care
Source: GHR
Topic: short-chain acyl-CoA dehydrogenase deficiency
Question: What is (are) short-chain acyl-CoA dehydrogenase deficiency ?
Answer: Short-chain acyl-CoA dehydrogenase (SCAD) deficiency is a condition that prevents the body from converting certain fats into energy, especially during periods without food (fasting).  Signs and symptoms of SCAD deficiency may appear during infancy or early childhood and can include vomiting, low blood sugar (hypoglycemia), a lack of energy (lethargy), poor feeding, and failure to gain weight and grow at the expected rate (failure to thrive). Other features of this disorder may include poor muscle tone (hypotonia), seizures, developmental delay, and a small head size (microcephaly).  The symptoms of SCAD deficiency may be triggered by fasting or illnesses such as viral infections. This disorder is sometimes mistaken for Reye syndrome, a severe condition that may develop in children while they appear to be recovering from viral infections such as chicken pox or flu. Most cases of Reye syndrome are associated with the use of aspirin during these viral infections.  In some people with SCAD deficiency, signs and symptoms do not appear until adulthood. These individuals are more likely to have problems related to muscle weakness and wasting.  The severity of this condition varies widely, even among members of the same family. Some individuals are diagnosed with SCAD deficiency based on laboratory testing but never develop any symptoms of the condition.
Source: GHR
Topic: short-chain acyl-CoA dehydrogenase deficiency
Question: How many people are affected by short-chain acyl-CoA dehydrogenase deficiency ?
Answer: This disorder is thought to affect approximately 1 in 35,000 to 50,000 newborns.
Source: GHR
Topic: short-chain acyl-CoA dehydrogenase deficiency
Question: What are the genetic changes related to short-chain acyl-CoA dehydrogenase deficiency ?
Answer: Mutations in the ACADS gene cause SCAD deficiency. This gene provides instructions for making an enzyme called short-chain acyl-CoA dehydrogenase, which is required to break down (metabolize) a group of fats called short-chain fatty acids. Fatty acids are a major source of energy for the heart and muscles. During periods of fasting, fatty acids are also an important energy source for the liver and other tissues.  Mutations in the ACADS gene lead to a shortage (deficiency) of the SCAD enzyme within cells. Without sufficient amounts of this enzyme, short-chain fatty acids are not metabolized properly. As a result, these fats are not converted into energy, which can lead to the signs and symptoms of this disorder, such as lethargy, hypoglycemia, and muscle weakness. It remains unclear why some people with SCAD deficiency never develop any symptoms.
Source: GHR