Druvith/medqa1 huggingface dataset:
Question:  What are the genetic changes related to mucolipidosis II alpha/beta ?
Answer: Mutations in the GNPTAB gene cause mucolipidosis II alpha/beta. This gene provides instructions for making part of an enzyme called GlcNAc-1-phosphotransferase. This enzyme helps prepare certain newly made enzymes for transport to lysosomes. Lysosomes are compartments within the cell that use digestive enzymes to break down large molecules into smaller ones that can be reused by cells. GlcNAc-1-phosphotransferase is involved in the process of attaching a molecule called mannose-6-phosphate (M6P) to specific digestive enzymes. Just as luggage is tagged at the airport to direct it to the correct destination, enzymes are often "tagged" after they are made so they get to where they are needed in the cell. M6P acts as a tag that indicates a digestive enzyme should be transported to the lysosome.  Mutations in the GNPTAB gene that cause mucolipidosis II alpha/beta prevent the production of any functional GlcNAc-1-phosphotransferase. Without this enzyme, digestive enzymes cannot be tagged with M6P and transported to lysosomes. Instead, they end up outside the cell and have increased digestive activity. The lack of digestive enzymes within lysosomes causes large molecules to accumulate there. Conditions that cause molecules to build up inside lysosomes, including mucolipidosis II alpha/beta, are called lysosomal storage disorders. The signs and symptoms of mucolipidosis II alpha/beta are most likely caused by the lack of digestive enzymes within lysosomes and the effects these enzymes have outside the cell.  Mutations in the GNPTAB gene can also cause a similar but milder disorder called mucolipidosis III alpha/beta. Instead of preventing the production of any enzyme, these mutations reduce the activity of GlcNAc-1-phosphotransferase. Mucolipidosis III alpha/beta and mucolipidosis II alpha/beta represent two ends of a spectrum of disease severity.
Question:  Is mucolipidosis II alpha/beta 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.
Question:  What are the treatments for mucolipidosis II alpha/beta ?
Answer: These resources address the diagnosis or management of mucolipidosis II alpha/beta:  - Gene Review: Gene Review: Mucolipidosis II  - Genetic Testing Registry: I cell disease  - MedlinePlus Encyclopedia: Clubfoot  - MedlinePlus Encyclopedia: Contracture deformity  - MedlinePlus Encyclopedia: Kyphosis   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
Question:  What is (are) myoclonus-dystonia ?
Answer: Myoclonus-dystonia is a movement disorder that typically affects the upper half of the body. Individuals with this condition experience quick, involuntary muscle jerking or twitching (myoclonus) that usually affects their arms, neck, and trunk. Less frequently, the legs are involved as well. More than half of affected individuals also develop dystonia, which is a pattern of involuntary muscle contractions that causes twisting and pulling movements of specific body parts. The dystonia associated with myoclonus-dystonia may affect a single part of the body, causing isolated problems such as a writer's cramp in the hand, or it may involve multiple areas of the body. Rarely, people with this condition have dystonia as their only symptom.  The movement problems usually appear in childhood or early adolescence, and myoclonus is typically the initial symptom. Myoclonus may be triggered by movement or stimulation of the affected body area, stress, sudden noise, or caffeine. In some cases, the myoclonus gets worse over time; in other cases, people experience a spontaneous improvement (remission) of their symptoms. It is unclear why the movement abnormalities improve in some people but not in others.  People with myoclonus-dystonia may have an increased risk for developing psychological conditions such as depression, anxiety, panic attacks, and obsessive-compulsive disorder (OCD).
Question:  How many people are affected by myoclonus-dystonia ?
Answer: The prevalence of myoclonus-dystonia is unknown. This condition has been described in people worldwide.
Question:  What are the genetic changes related to myoclonus-dystonia ?
Answer: Mutations in the SGCE gene cause myoclonus-dystonia. The SGCE gene provides instructions for making a protein called epsilon ()-sarcoglycan, whose function is unknown. The -sarcoglycan protein is located within the cell membranes of many tissues, but it is most abundant in nerve cells (neurons) in the brain and in muscle cells.  SGCE gene mutations that cause myoclonus-dystonia result in a shortage of -sarcoglycan protein. The protein shortage seems to affect the regions of the brain involved in coordinating movements (the cerebellum) and controlling movements (the basal ganglia). Thus, the movement problems experienced by people with myoclonus-dystonia are caused by dysfunction in the brain, not the muscles. People with this condition show no signs of muscle disease. It is unknown why SGCE gene mutations seem only to affect the brain.
Question:  Is myoclonus-dystonia inherited ?
Answer: Myoclonus-dystonia is inherited in an autosomal dominant pattern, which means one copy of the altered gene in each cell is sufficient to cause the disorder.  People normally inherit one copy of each gene from their mother and one copy from their father. For most genes, both copies are active, or "turned on," in all cells. For a small subset of genes, however, only one of the two copies is active. For some of these genes, only the copy inherited from a person's father (the paternal copy) is active, while for other genes, only the copy inherited from a person's mother (the maternal copy) is active. These differences in gene activation based on the gene's parent of origin are caused by a phenomenon called genomic imprinting.  Only the paternal copy of the SGCE gene is active. Myoclonus-dystonia occurs when mutations affect the paternal copy of the SGCE gene. Mutations in the maternal copy of the gene typically do not cause any health problems.
Question:  What are the treatments for myoclonus-dystonia ?
Answer: These resources address the diagnosis or management of myoclonus-dystonia:  - Gene Review: Gene Review: Myoclonus-Dystonia  - Genetic Testing Registry: Myoclonic dystonia   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
Question:  What is (are) complete LCAT deficiency ?
Answer: Complete LCAT deficiency is a disorder that primarily affects the eyes and kidneys.  In complete LCAT deficiency, the clear front surface of the eyes (the corneas) gradually becomes cloudy. The cloudiness, which generally first appears in early childhood, consists of small grayish dots of cholesterol (opacities) distributed across the corneas. Cholesterol is a waxy, fat-like substance that is produced in the body and obtained from foods that come from animals; it aids in many functions of the body but can become harmful in excessive amounts. As complete LCAT deficiency progresses, the corneal cloudiness worsens and can lead to severely impaired vision.  People with complete LCAT deficiency often have kidney disease that begins in adolescence or early adulthood. The kidney problems get worse over time and may eventually lead to kidney failure. Individuals with this disorder also usually have a condition known as hemolytic anemia, in which red blood cells are broken down (undergo hemolysis) prematurely, resulting in a shortage of red blood cells (anemia). Anemia can cause pale skin, weakness, fatigue, and more serious complications.  Other features of complete LCAT deficiency that occur in some affected individuals include enlargement of the liver (hepatomegaly), spleen (splenomegaly), or lymph nodes (lymphadenopathy) or an accumulation of fatty deposits on the artery walls (atherosclerosis).
Question:  How many people are affected by complete LCAT deficiency ?
Answer: Complete LCAT deficiency is a rare disorder. Approximately 70 cases have been reported in the medical literature.
Question:  What are the genetic changes related to complete LCAT deficiency ?
Answer: Complete LCAT deficiency is caused by mutations in the LCAT gene. This gene provides instructions for making an enzyme called lecithin-cholesterol acyltransferase (LCAT).  The LCAT enzyme plays a role in removing cholesterol from the blood and tissues by helping it attach to molecules called lipoproteins, which carry it to the liver. Once in the liver, the cholesterol is redistributed to other tissues or removed from the body. The enzyme has two major functions, called alpha- and beta-LCAT activity. Alpha-LCAT activity helps attach cholesterol to a lipoprotein called high-density lipoprotein (HDL). Beta-LCAT activity helps attach cholesterol to other lipoproteins called very low-density lipoprotein (VLDL) and low-density lipoprotein (LDL).  LCAT gene mutations that cause complete LCAT deficiency either prevent the production of LCAT or impair both alpha-LCAT and beta-LCAT activity, reducing the enzyme's ability to attach cholesterol to lipoproteins. Impairment of this mechanism for reducing cholesterol in the body leads to cholesterol deposits in the corneas, kidneys, and other tissues and organs. LCAT gene mutations that affect only alpha-LCAT activity cause a related disorder called fish-eye disease that affects only the corneas.
Question:  Is complete LCAT deficiency 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.
Question:  What are the treatments for complete LCAT deficiency ?
Answer: These resources address the diagnosis or management of complete LCAT deficiency:  - Genetic Testing Registry: Norum disease  - MedlinePlus Encyclopedia: Corneal Transplant  - National Heart, Lung, and Blood Institute: How is Hemolytic Anemia Treated?  - National Institutes of Diabetes and Digestive and Kidney Diseases: Kidney Failure -- Choosing a Treatment That's Right for You  - Oregon Health and Science University: Corneal Dystrophy   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
Question:  What is (are) Peters plus syndrome ?
Answer: Peters plus syndrome is an inherited condition that is characterized by eye abnormalities, short stature, an opening in the lip (cleft lip) with or without an opening in the roof of the mouth (cleft palate), distinctive facial features, and intellectual disability.  The eye problems in Peters plus syndrome occur in an area at the front part of the eye known as the anterior segment. The anterior segment consists of structures including the lens, the colored part of the eye (iris), and the clear covering of the eye (cornea). An eye problem called Peters anomaly is the most common anterior segment abnormality seen in Peters plus syndrome. Peters anomaly involves abnormal development of the anterior segment, which results in a cornea that is cloudy (opaque) and causes blurred vision. Peters anomaly may also be associated with clouding of the lenses of the eyes (cataracts) or other lens abnormalities. Peters anomaly is usually bilateral, which means that it affects both eyes. The severity of corneal clouding and other eye problems can vary between individuals with Peters plus syndrome, even among members of the same family. Many people with Peters plus syndrome experience vision loss that worsens over time.  All people with Peters plus syndrome have short stature, which is evident before birth. The height of adult males with this condition ranges from 141 centimeters to 155 centimeters (4 feet, 7 inches to 5 feet, 1 inch), and the height of adult females ranges from 128 centimeters to 151 centimeters (4 feet, 2 inches to 4 feet, 11 inches). Individuals with Peters plus syndrome also have shortened upper limbs (rhizomelia) and shortened fingers and toes (brachydactyly).  The characteristic facial features of Peters plus syndrome include a prominent forehead; small, malformed ears; narrow eyes; a long area between the nose and mouth (philtrum); and a pronounced double curve of the upper lip (Cupid's bow). The neck may also be broad and webbed. A cleft lip with or without a cleft palate is present in about half of the people with this condition.  Developmental milestones, such as walking and speech, are delayed in most children with Peters plus syndrome. Most affected individuals also have intellectual disability that can range from mild to severe, although some have normal intelligence. The severity of physical features does not predict the level of intellectual disability.  Less common signs and symptoms of Peters plus syndrome include heart defects, structural brain abnormalities, hearing loss, and kidney or genital abnormalities.
Question:  How many people are affected by Peters plus syndrome ?
Answer: Peters plus syndrome is a rare disorder; its incidence is unknown. Fewer than 80 people with this condition have been reported worldwide.
Question:  What are the genetic changes related to Peters plus syndrome ?
Answer: Mutations in the B3GLCT gene cause Peters plus syndrome. The B3GLCT gene provides instructions for making an enzyme called beta 3-glucosyltransferase (B3Glc-T), which is involved in the complex process of adding sugar molecules to proteins (glycosylation). Glycosylation modifies proteins so they can perform a wider variety of functions. Most mutations in the B3GLCT gene lead to the production of an abnormally short, nonfunctional version of the B3Glc-T enzyme, which disrupts glycosylation. It is unclear how the loss of functional B3Glc-T enzyme leads to the signs and symptoms of Peters plus syndrome, but impaired glycosylation likely disrupts the function of many proteins, which may contribute to the variety of features.
Question:  Is Peters plus syndrome 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.
Question:  What are the treatments for Peters plus syndrome ?
Answer: These resources address the diagnosis or management of Peters plus syndrome:  - Gene Review: Gene Review: Peters Plus Syndrome  - Genetic Testing Registry: Peters plus syndrome   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
Question:  What is (are) Holt-Oram syndrome ?
Answer: Holt-Oram syndrome is characterized by skeletal abnormalities of the hands and arms (upper limbs) and heart problems.  People with Holt-Oram syndrome have abnormally developed bones in their upper limbs. At least one abnormality in the bones of the wrist (carpal bones) is present in affected individuals. Often, these wrist bone abnormalities can be detected only by x-ray. Individuals with Holt-Oram syndrome may have additional bone abnormalities including a missing thumb, a long thumb that looks like a finger, partial or complete absence of bones in the forearm, an underdeveloped bone of the upper arm, and abnormalities of the collar bone or shoulder blades. These skeletal abnormalities may affect one or both of the upper limbs. If both upper limbs are affected, the bone abnormalities can be the same or different on each side. In cases where the skeletal abnormalities are not the same on both sides of the body, the left side is usually more severely affected than the right side.  About 75 percent of individuals with Holt-Oram syndrome have heart (cardiac) problems, which can be life-threatening. The most common problem is a defect in the muscular wall (septum) that separates the right and left sides of the heart. A hole in the septum between the upper chambers of the heart (atria) is called an atrial septal defect (ASD), and a hole in the septum between the lower chambers of the heart (ventricles) is called a ventricular septal defect (VSD). Some people with Holt-Oram syndrome have cardiac conduction disease, which is caused by abnormalities in the electrical system that coordinates contractions of the heart chambers. Cardiac conduction disease can lead to problems such as a slower-than-normal heart rate (bradycardia) or a rapid and uncoordinated contraction of the heart muscle (fibrillation). Cardiac conduction disease can occur along with other heart defects (such as ASD or VSD) or as the only heart problem in people with Holt-Oram syndrome.  The features of Holt-Oram syndrome are similar to those of a condition called Duane-radial ray syndrome; however, these two disorders are caused by mutations in different genes.
Question:  How many people are affected by Holt-Oram syndrome ?
Answer: Holt-Oram syndrome is estimated to affect 1 in 100,000 individuals.
Question:  What are the genetic changes related to Holt-Oram syndrome ?
Answer: Mutations in the TBX5 gene cause Holt-Oram syndrome. This gene provides instructions for making a protein that plays a role in the development of the heart and upper limbs before birth. In particular, this gene appears to be important for the process that divides the developing heart into four chambers (cardiac septation). The TBX5 gene also appears to play a critical role in regulating the development of bones in the arm and hand. Mutations in this gene probably disrupt the development of the heart and upper limbs, leading to the characteristic features of Holt-Oram syndrome.
Question:  Is Holt-Oram syndrome 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.
Question:  What are the treatments for Holt-Oram syndrome ?
Answer: These resources address the diagnosis or management of Holt-Oram syndrome:  - Gene Review: Gene Review: Holt-Oram Syndrome  - Genetic Testing Registry: Holt-Oram syndrome  - MedlinePlus Encyclopedia: Atrial Septal Defect  - MedlinePlus Encyclopedia: Skeletal Limb Abnormalities  - MedlinePlus Encyclopedia: Ventricular Septal Defect   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
Question:  What is (are) essential thrombocythemia ?
Answer: Essential thrombocythemia is a condition characterized by an increased number of platelets (thrombocythemia). Platelets (thrombocytes) are blood cell fragments involved in blood clotting. While some people with this condition have no symptoms, others develop problems associated with the excess platelets.  Abnormal blood clotting (thrombosis) is common in people with essential thrombocythemia and causes many signs and symptoms of this condition. Clots that block blood flow to the brain can cause strokes or temporary stroke-like episodes known as transient ischemic attacks. Thrombosis in the legs can cause leg pain, swelling, or both. In addition, clots can travel to the lungs (pulmonary embolism), blocking blood flow in the lungs and causing chest pain and difficulty breathing (dyspnea).  Another problem in essential thrombocythemia is abnormal bleeding, which occurs more often in people with a very high number of platelets. Affected people may have nosebleeds, bleeding gums, or bleeding in the gastrointestinal tract. It is thought that bleeding occurs because a specific protein in the blood that helps with clotting is reduced, although why the protein is reduced is unclear.  Other signs and symptoms of essential thrombocythemia include an enlarged spleen (splenomegaly); weakness; headaches; or a sensation in the skin of burning, tingling, or prickling. Some people with essential thrombocythemia have episodes of severe pain, redness, and swelling (erythromelalgia), which commonly occur in the hands and feet.
Question:  How many people are affected by essential thrombocythemia ?
Answer: Essential thrombocythemia affects an estimated 1 to 24 per 1 million people worldwide.
Question:  What are the genetic changes related to essential thrombocythemia ?
Answer: The JAK2 and CALR genes are the most commonly mutated genes in essential thrombocythemia. The MPL, THPO, and TET2 genes can also be altered in this condition. The JAK2, MPL, and THPO genes provide instructions for making proteins that promote the growth and division (proliferation) of blood cells. The CALR gene provides instructions for making a protein with multiple functions, including ensuring the proper folding of newly formed proteins and maintaining the correct levels of stored calcium in cells. The TET2 gene provides instructions for making a protein whose function is unknown.  The proteins produced from the JAK2, MPL, and THPO genes are part of a signaling pathway called the JAK/STAT pathway, which transmits chemical signals from outside the cell to the cell's nucleus. These proteins work together to turn on (activate) the JAK/STAT pathway, which promotes the proliferation of blood cells, particularly platelets and their precursor cells, megakaryocytes.  Mutations in the JAK2, MPL, and THPO genes that are associated with essential thrombocythemia lead to overactivation of the JAK/STAT pathway. The abnormal activation of JAK/STAT signaling leads to overproduction of megakaryocytes, which results in an increased number of platelets. Excess platelets can cause thrombosis, which leads to many signs and symptoms of essential thrombocythemia.  Although mutations in the CALR and TET2 genes have been found in people with essential thrombocythemia, it is unclear how these gene mutations are involved in development of the condition.  Some people with essential thrombocythemia do not have a mutation in any of the known genes associated with this condition. Researchers are working to identify other genes that may be involved in the condition.
Question:  Is essential thrombocythemia inherited ?
Answer: Most cases of essential thrombocythemia are not inherited. Instead, the condition arises from gene mutations that occur in early blood-forming cells after conception. These alterations are called somatic mutations.  Less commonly, essential thrombocythemia is inherited in an autosomal dominant pattern, which means one copy of the altered gene in each cell is sufficient to cause the disorder. When it is inherited, the condition is called familial essential thrombocythemia.
Question:  What are the treatments for essential thrombocythemia ?
Answer: These resources address the diagnosis or management of essential thrombocythemia:  - Cleveland Clinic: Thrombocytosis  - Genetic Testing Registry: Essential thrombocythemia  - Merck Manual for Health Care Professionals: Essential Thrombocythemia   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