narp syndrome life expectancy

Many affected individuals also have vision loss caused by changes in the light-sensitive tissue that lines the back of the eye (the retina). eCollection 2013 Sep. RP is a general term for a group of vision disorders that cause progressive degeneration of the membrane lining the eyes (retina) resulting in visual impairment. The clinical spectrum of the m.10191T>C mutation in complex I-deficient Leigh syndrome. Most individuals with NARP have a specific MT-ATP6 mutation in 70 percent to 90 percent of their mitochondria. These cases are sometimes referred to as maternally inherited Leigh syndrome (MILS) or mtDNA-associated Leigh syndrome. Keyword Highlighting There are no proven therapies for Leigh Syndrome of any type. Lemoine S, Panaye M, Rabeyrin M, Errazuriz-Cerda E, Mousson de Camaret B, Petiot P, Juillard L, Guebre-Egziabher F. Renal Involvement in Neuropathy, Ataxia, Retinitis Pigmentosa (NARP) Syndrome: A Case Report. narp syndrome life expectancy 06-4774884 narp syndrome life expectancy 06-4774882 . This pattern of inheritance applies to genes contained in mtDNA. Learning disabilities and developmental delays are often seen in children with NARP, and older individuals with this condition may experience a loss of intellectual function (dementia). The neurological problems associated with the disease progress slowly in this form of the disorder. Some children with this disorder may have abnormal enlargement of the heart (hypertrophic cardiomyopathy) and overgrowth of the fibrous membrane that divides the various chambers of the heart (asymmetric septal hypertrophy). Mitochondria, found by the hundreds or thousands within almost every cell of the body, regulate the production of cellular energy and carry the genetic blueprints for this process within their own unique DNA (mtDNA). mitochondrial disease; NARP syndrome; retinitis pigmentosa. Neuropathy, ataxia and retinitis pigmentosa (NARP) syndrome. 1996;39:343-51. kaytee forti-diet parakeet; synechococcus algaebase; intro to listening university of alabama; endicott college student population 2019; bagoong fried rice calories; Epub 2017 Dec 8. Although most DNA is packaged in chromosomes within the nucleus, mitochondria also have a small amount of their own DNA, known as mitochondrial DNA or mtDNA. White, S. L., Collins, V. R., Wolfe, R., Cleary, M. A., Shanske, S., DiMauro, S., Dahl, H. H., & Thorburn, D. R. (1999). Online Mendelian Inheritance in Man (OMIM). NARP classically manifests in childhood and is estimated to have an incidence rate of approximately 1 to 9 per 100,000. 1993;24:60-7. Neuropathy, ataxia, and retinitis pigmentosa syndrome, an infrequent and underdiagnosed disease in ophthalmology due to the need for multidisciplinary evaluation. Long Name: Neuropathy, Ataxia, and Retinitis Pigmentosa. [2][3] In some cases, the vision loss results from a condition called retinitis pigmentosa. Last Edited October 13, 2011. This eye disease causes the light-sensing cells of the retina gradually to deteriorate. 2002;52(6):750-4. [6] Mutations in the MT-ATP6 gene alter the structure or function of ATP synthase, reducing the ability of mitochondria to make ATP. Visual field testing of both eyes (24: 2): concentric decrease, leaving 20 central degrees largely intact, compatible with nyctalopia. Lpez-Gallardo E, Emperador S, Solano A, et al. Genetic counseling and prenatal diagnosis for the mitochondrial DNA mutations at nucleotide 8993. (2013). Couser, N., and M. Gucsavas-Calikoglu. NARP affects males and females in equal numbers[5]. In the United States, most cases occur in alcoholics. The specific symptoms of NARP syndrome in each individual vary greatly from case to case. [4] These signs and symptoms vary among affected individuals. TARP syndrome (TARPS) is an X-linked syndromic condition including Robin sequence, congenital heart defects, developmental delay, feeding difficulties and talipes equinovarus, as major features. None of the authors has any financial/conflicting interests to disclose. Onset of symptoms is typically in childhood, often starting with ataxia and learning disability. Generally, individuals with NARP become symptomatic in early childhood. Seattle, WA: University of Washington, Seattle; 2003:19932018. An MRI uses a magnetic field and radio waves to produce cross-sectional images of particular organs and bodily tissues. The symptoms of the adult-onset form of Leigh syndrome (subacute necrotizing encephalomyelopathy), a very rare form of the disorder, generally begin during adolescence or early adulthood. Genetic counseling is recommended for families of affected individuals with this disorder. report on a NARP patient with macular atrophy on OCT[5]. 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The symptoms of Leigh syndrome usually begin between the ages of three months and two years, but some patients do not exhibit signs and symptoms until several years later. An affected mother will pass the traits to all of her children, but only the daughters will pass the mutation(s) onto the next generation. Adverts are the main source of Revenue for DoveMed. A new mitochondrial disease associated with mitochondrial DNA heteroplasmy.. Patients with suspected mitochondrial disease could greatly benefit from an ophthalmology examination like that conducted in this case because it was the key factor that led to the suspicion of syndromic disease, and ultimately the diagnosis. Necrotizing Encephalomyelopathy, Subacute, Of Leigh, Adult. J Neuropathy, ataxia and retinitis pigmentosa (NARP) syndrome is a rare genetic disorder. Based on these findings, we were able to confirm the diagnosis of retinitis pigmentosa. Genes Brain Behav 2013;12:812820. Previously acquired intellectual skills may diminish and intellectual disability may also occur. The oldest reported survivor was 18 years old, suggesting that some patients may live longer. NARP Syndrome: A 20-Year Follow-Up . Uziel G, Moroni I, Lamantea E, Fratta GM, Ciceri E, Carrara F, Zeviani M. It is important that individuals affected are monitored (every 612 months) to detect progression and the appearance of any new symptoms. A novel mitochondrial mutation m.8989G>C associated with neuropathy, ataxia. If there is a family history of NARP, prenatal use of chorionic villus sampling with cytogenetic analysis and amniocentesis can be used to identify mutations in the fetus. Blood sugar (glucose) may be slightly lower than normal. Leigh syndrome (or subacute necrotizing encephalomyelopathy) is characterized by onset of symptoms typically between ages three and 12 months . Because these two conditions result from the same genetic changes and can occur in different members of a single family, and because some individuals with MT-ATP6 gene mutations have related signs and symptoms that do not follow the specific patterns of these conditions, researchers believe that the conditions may be part of a spectrum of overlapping features rather than two distinct syndromes. The outer limiting membrane is intact. Most individuals with NARP have a specific MT-ATP6 mutation in 70 percent to 90 percent of their mitochondria. The most common treatment for Leigh syndrome is the administration of thiamine (Vitamin B1) or thiamine derivatives. The mutation leads to depletion of mitochondrial DNA and mitochondrial dysregulation. The enzyme pyruvate carboxylase may be absent from the liver and an inhibitor of thiamine triphosphate (TTP) production may be present in the blood and urine of affected individuals. NARP results from mutations in the MT-ATP6 gene. Citrulline level in blood is decreased. 1993;122:419-22. Neurology 2012;79:11451154. Enzymes within lysosomes break down or digest nutrients, including certain complex carbohydrates and fats. Other features of NARP include seizures, hearing loss, and abnormalities of the electrical signals that control the heartbeat (cardiac conduction defects). Holt, I J et al. Phone: 617-249-7300, Danbury, CT office Mitochondria are structures within cells that convert the energy from food into a form that cells can use. This rare disease occurs in about one in 100,000 people. Neuropathol. As a result, all human mtDNA comes from the mother. The risk to have a child who is a carrier like the parents is 50 percent with each pregnancy. Claeys KG, Abicht A, Husler M, Kleinle S, Wiesmann M, Schulz JB, Horvath R, Weis J. Highlight selected keywords in the article text. Washington, DC 20036 Changing lives of those with rare disease. NARP is a maternally inherited syndrome in which ataxia, retinitis pigmentosa, and sensory neuropathy with proximal neurogenic muscle weakness are cardinal features ( Claeys et al., 2016 ). For more information, visitwww.rareconnect.org. Gene Delivery of ATP6 by A Mitochondrial Targeting Sequence Modification of AAV Capsid VP2 Rescues Cells with Mutated T8993G MtDNA Responsible for Neuropathy Ataxia and Retinitis Pigmentosa. To use the sharing features on this page, please enable JavaScript. Lactic acidosis and hypercapnia can lead to psychomotor regression and respiratory, heart, or kidney impairment. Chowers I, Lerman-Sagie T, Elpeleg ON, Shaag A, Merin S. Cone and rod The m.8993T> C/G mutation is the most prevalent, described by Thorburn et al.1 Nowadays, several mutations are known to cause the syndrome: m.8839G> C,2 m.8989 G > C,3 m.8618insT, p.Thr33Hisfs*32,4 and 9185T > C.5 If no variant of pathogenic MT-ATP6 is identified, however, mitochondrial genome analysis should be performed.5. In these cases, which affect twice as many males as females, the progression of the disease is slower than the classical form of the disease. ephesians 4:15 message; blue raspberry crush soda; ), Batten disease, a rare genetic disorder, belongs to a group of progressive degenerative neurometabolic disorders known as the neuronal ceroid lipofuscinoses. When these two disorders occur together, the term Wernicke-Korsakoff syndrome is used. doi: 10.1159/000357518. Autofluorescence imaging revealed hyperautofluorescence and hypoautofluorescence granular patterns in the posterior pole and vascular arcades. Two years later, the patient showed worsening symptoms with dysdiadochokinesia, hyporeflexia in the lower limbs, and alteration of the deep sensitivity of feet with bilateral Babinski signs. Most people with NARP experience numbness, tingling, or pain in the arms and legs (sensory neuropathy); muscle weakness; and problems with balance and coordination (ataxia). People with NARP . The female egg cells contain organelles called mitochondria that drive energy production. PMID: 22364517. Depending on the specific type of mitochondrial disease, common symptoms include muscle weakness, imbalance, gastrointestinal problems, poor growth, liver disease, heart disease, diabetes, visual and hearing issues, lactic acidosis, and developmental delays. 75 VARICK ST, 9TH FLR, NEW YORK, NY 10013-1917 USA: NATURE PUBLISHING GROUP. Several different types of genetically determined metabolic defects can lead to Leigh syndrome. Because the condition is due to a nDNA mutation, the abnormal gene can be inherited from either parent, or can be the result of a new nDNA mutation in the affected individual. Department of Ophthalmology, Donostia University Hospital, Donostia - San-Sebastian, Spain. Pediatricians, cardiologists, neurologists, specialists who assess and treat hearing problems (audiologists), eye specialists, and other health care professionals may need to systematically and comprehensively plan an effective childs treatment. How can gene variants affect health and development? Neuropathy, ataxia, and retinitis pigmentosa (NARP) is a condition that causes a variety of signs and symptoms that mainly affect the nervous system. Therefore, in females, disease traits on the X chromosome can be masked by the normal gene on the other X chromosome. The common signs and symptoms of NARP Syndrome include: A diagnosis of Neuropathy, Ataxia, and Retinitis Pigmentosa may involve: Many clinical conditions may have similar signs and symptoms. J Pediatr. Dominant genetic disorders occur when only a single copy of an abnormal gene is necessary for the appearance of the disease. When this mutation is present in a higher percentage of a person's mitochondriagreater than 90 percent to 95 percentit causes a more severe condition known as maternally inherited Leigh syndrome. Clinical symptoms can be heterogeneous. Ann Neurol. With disease progression, affected infants and children may develop cherry-red spots within the middle layer of the eyes, gradual loss of vision, and deafness, increasing muscle stiffness and restricted movements (spasticity), eventual paralysis, uncontrolled electrical disturbances in the brain (seizures), and deterioration of cognitive processes (dementia). Comparisons may be useful for a differential diagnosis: Wernicke syndrome and Korsakoff syndrome are related disorders that often occur due to a deficiency of thiamine (vitamin B1). Expanding the clinical phenotypes of MT-ATP6 mutations. Symptoms are associated with progressive neurological deterioration and may include loss of previously acquired motor skills, loss of appetite, vomiting, irritability, and/or seizure activity. Individuals with NARP Syndrome experience numbness, tingling sensation or pain in the legs and arms (sensory neuropathy), muscle weakness associated with balance and coordination problems (ataxia), and degradation of light-sensing cells of the retina leading to blindness (retinitis pigmentosa) In: Adam MP, Everman DB, Mirzaa GM, Periodically, levels of carbon dioxide in the blood may also be abnormally elevated (hypercapnia). You may be trying to access this site from a secured browser on the server. Gene Delivery of ATP6 by a Mitochondrial Targeting Sequence Modification of AAV9 Capsid VP2 Rescues Cells with Mutated T8993G MtDNA Responsible for Neuropathy Ataxia and Retinitis Pigmentosa and Expresses in the Mouse CNS. NARP must be differentiated from other mitochondrial disorders, which share many common features (particularly Leigh syndrome). In some cases, the vision loss results from a condition called retinitis pigmentosa. Patients can experience cognitive decline, with vision, hearing and mobility impairments[12]. 2000;45(2):69-75. 2010;133(10):2952-63. Individuals with more than 90% mutated chromosomes are considered to have a subtype of Leigh syndrome (MILS) with earlier onset (3-12 months of age). Lysosomes are the major digestive units in cells. Other ocular findings include nystagmus and sluggish pupils. Mitochondrial disorders can appear in every generation of a family and can affect both males and females, but fathers do not pass mitochondrial traits to their children. your child will be able to grow up alongside of their peers with a normal life expectancy. Online Mendelian Inheritance in Man (OMIM). ), Neuropathy, ataxia and retinitis pigmentosa (NARP) syndrome is a rare genetic disorder. Initial symptoms are generally related to vision and may include such abnormalities as blurred filmy central visual fields (central scotoma), colorblindness, and/or progressive visual loss due to degeneration of the optic nerve (bilateral optic atrophy). Some people with this disorder may experience a temporary symptomatic improvement and a slight slowing of the progression of the disease. Years published: 1987, 1988, 1990, 1992, 1994, 1996, 1998, 1999, 2006, 2007, 2009, 2012, 2013, 2016. Rahman S, et al., Leigh syndrome: clinical features and biochemical and DNA abnormalities. Retinopathy of NARP Syndrome. For the diagnosis, a multidisciplinary team including a neurologist, a geneticist, and an ophthalmologist was essential. Explore symptoms, inheritance, genetics of this condition. Please note that NORD provides this information for the benefit of the rare disease community. Death Metal from Wrzburg, Germany. Ann Neurol. It is characterized by nerve disease affecting the nerves outside of the central nervous system (peripheral neuropathy), an impaired ability to coordinate voluntary movements (ataxia), an eye condition known as retinitis pigmentosa (RP), and a variety of . Some risk factors are more important than others. Whilst NARP can have periods of stability, generally there is disease progression over time. The Johns Hopkins University. Tay-Sachs disease is a rare, neurodegenerative disorder in which deficiency of an enzyme (hexosaminidase A) results in excessive accumulation of certain fats (lipids) known as gangliosides in the brain and nerve cells. Neuropediatrics. Further neurological development is delayed. The classical form of Tay-Sachs disease occurs during infancy; an adult form (late-onset Tay-Sachs disease) may occur anytime from adolescence to the mid-30s. Kernen and Kuusisto report on a patient with NARP that had generalized spike and wave discharges on EEG that preceded the development of adult-onset seizures[9]. Small or large cysts may be present in the cerebral cortex of the brain. An inherited gene change (mutation) causes Leigh syndrome. Through a series of chemical reactions, mitochondria use oxygen and simple sugars to create adenosine triphosphate (ATP), the cell's main energy source. Mitochondrial News. In summary, NARP is a mitochondrial disorder that is characterized by neuropathy, ataxia, and retinitis pigmentosa. Kernen T, Kuusisto H. NARP syndrome and adult-onset generalised seizures. Photopic response shows a moderate amplitude decrease. Because egg cells, but not sperm cells, contribute mitochondria to the developing embryo, children can inherit disorders resulting from mtDNA mutations only from their mother. A 2 bp deletion in the mitochondrial ATP 6 gene responsible for the NARP (neuropathy, ataxia, and retinitis pigmentosa) syndrome. 1997 Jul;63(1):16-22. doi: 10.1136/jnnp.63.1.16. Some NARP exacerbations may be triggered by illness (e.g., viral infection)[3]. This form of the disease affects males and females in equal numbers. Please try again soon. Women should be counseled on the potential variable expressivity of NARP due to the genetic shift from mother to offspring[13]. 1. See our, Neuropathy, ataxia, and retinitis pigmentosa, URL of this page: https://medlineplus.gov/genetics/condition/neuropathy-ataxia-and-retinitis-pigmentosa/. NARP does not typically cause lactic acidosis, which contrasts with other mitochondrial disorders[3]. MedlinePlus links to health information from the National Institutes of Health and other federal government agencies. Entry No: 161700. Guy, J., & Yuan, H. (2013, June). Less common findings seen with NARP include hearing loss, ophthalmoplegia, cardiac conduction defects, anxiety, dementia, sleep apnea, and short stature. This is an open-access article distributed under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives License 4.0 (CCBY-NC-ND), where it is permissible to download and share the work provided it is properly cited. 1999 Feb;83(2):190-3. doi: Retinal pigment epithelium alteration with round pigment clumps in the midperiphery, papillary pallor, and arteriolar attenuation. Specifically, macular atrophy was seen in optical coherence tomography, a previously unreported sign in a patient with this syndrome. Clinical symptoms can be heterogeneous. The signs and symptoms of Neuropathy, Ataxia, and Retinitis Pigmentosa tend to appear from early childhood or early adulthood, and they gradually increase as the individual gets older. The m.8993T>G variant substitutes a conserved leucine with an arginine in subunit 6 of the mitochondrial F1F0 ATP synthase. In Encyclopedia of Molecular Mechanisms of Disease (pp. If an individual receives one normal gene and one gene for the disease, the person will be a carrier for the disease, but usually will not show symptoms. The symptoms of Batten disease usually become apparent between 5 and 15 years of age when progressive loss of vision, seizures, and progressive neurological degeneration develop. Though difficult to diagnose, NARP is generally worked-up by identifying key signs and symptoms through a detailed patient history and comprehensive clinical evaluation. Dev Med Child Neurol. Tuppen HA, Hogan VE, He L, et al. Please try after some time. Neuropathy ataxia retinitis pigmentosa syndrome - About the Disease - Genetic and Rare Diseases Information Center National Center for Advancing Translational Sciences Browse by Disease About GARD Contact Us We recently launched the new GARD website and are still developing specific pages. Holt, I., Klopstock, T., & Zeviani, M. (2009). Santorelli FM, The mutation at nt 8993 of mitochondrial DNA is a common cause of Leighs syndrome. 2016 Aug;54(2):328-33. doi: 10.1002/mus.25125. Neuropathy, Ataxia, and Retinitis Pigmentosa is a progressive and irreversible disorder. Ann Neurol. 2017 Dec 9;494(1-2):133-137. doi: 10.1016/j.bbrc.2017.10.066. Neuropathy, ataxia, and retinitis pigmentosa (NARP) syndrome is a progressive neurodegenerative disorder caused by abnormalities in mitochondrial energy generation. 69-73). Springer, Berlin, Heidelberg. This condition is inherited in a mitochondrial pattern, which is also known as maternal inheritance. Thorburn DR, Rahman J, Rahman S. Mitochondrial DNA-associated Leigh syndrome and NARP. The mtDNA from the father is carried by sperm cells. Mitochondrial DNA (mtDNA) is contained in the mitochondria of cells and is inherited exclusively from the childs mother. Eds. Nevertheless, this time, the cerebrospinal fluid analysis showed a slight increase in lactate levels. Rojo A, Campos Y, Sanchez JM, Bonaventura I, Aguilar M, Garcia A, Gonzalez L, Ciafaloni E, et al., Maternally inherited Leigh syndrome. Seattle (WA): University of Washington, In some rare cases, Leigh syndrome may begin during late adolescence or early adulthood (adult-onset subacute necrotizing encephalomyelopathy). Although there is no cure, genetic counseling and supportive treatments should be considered and appropriate multi-disciplinary management (e.g., neurology, ophthalmology, cardiology) is recommended. NARP (Neuropathy, Ataxia, and Retinitis Pigmentosa) Syndrome, Neurogenic Muscle Weakness, Ataxia, and Retinitis Pigmentosa, Neuropathy, Ataxia, and Retinitis Pigmentosa (NARP) is a rare genetic condition that causes a gradual deterioration of the nervous system in children and young adults, Individuals with NARP Syndrome experience numbness, tingling sensation or pain in the legs and arms (sensory neuropathy), muscle weakness associated with balance and coordination problems (ataxia), and degradation of light-sensing cells of the retina leading to blindness (retinitis pigmentosa), There is currently no cure and preventive measures available for Neuropathy, Ataxia, and Retinitis Pigmentosa; however, symptomatic treatment and medications can be provided, The average life expectancy of an individual with NARP Syndrome varies and is based on treatment effectiveness and the rate of neural degradation, Neuropathy, Ataxia, and Retinitis Pigmentosa is a rare disorder estimated to have a prevalence of about 1 in 100,000 live births. Dev Disabil Res Rev. Seattle (WA): University of Washington, Seattle; 1993-2021. [7] It remains unclear how this disruption in mitochondrial energy production leads to muscle weakness, vision loss, and the other specific features of NARP. Wolters Kluwer Health Mitochondrial Disorders Overview. Typical ocular findings in NARP are the salt-and-pepper retinopathy appearing early in the disease course that eventually progresses to retinitis pigmentosa[6]. Macular optical coherence tomography of both eyes: generalized macular atrophy with greater thinning in the outer nuclear layers and a defect in the ellipsoid zone. [7][8] Mitochondrial studies or NARP mtDNA evaluation plays a role in genetic diagnosis[9] which can also be done prenatally. 9. Wernickes syndrome, also known as Wernicke encephalopathy, is a neurological disease characterized by the clinical triad of confusion, the inability to coordinate voluntary movement (ataxia), and eye (ocular) abnormalities. PMID: 16987741. Accessed March 16, 2016. Your healthcare provider may perform additional tests to rule out other clinical conditions to arrive at a definitive diagnosis. Since males only have one X chromosome, if they inherit a gene for a disease present on the X, it will be expressed. Available from: https://www.ncbi.nlm.nih.gov/books/NBK1224/. This pattern of inheritance applies to genes contained in mitochondrial DNA. Cause: Mitochondrial DNA point mutations in genes associated with Complex V: T8993G, (also T8993C by some researchers). and NARP. Identification and biochemical characterization of the novel mutation m.8839G>C in the mitochondrial ATP6 gene associated with NARP syndrome. Data is temporarily unavailable. The condition typically begins in childhood or early adulthood, and the signs and symptoms usually worsen over time. In some cases, Leigh syndrome may be inherited from the mother as a mutation found within the DNA of mitochondria. Mordel, P., Schaeffer, S., Dupas, Q., Laville, M. A., Grard, M., Chapon, F., & Allouche, S. (2017). The severity of some mitochondrial disorders is associated with the percentage of mitochondria in each cell that has a particular genetic change. The symptoms of the X-linked infantile form of Leigh syndrome are similar to those of classical Leigh syndrome. If we dont have a program for you now, please continue to check back with us. Acta The multidisciplinary diagnosis was fundamental, and achieved thorough collaboration between the neurology, ophthalmology, and genetics departments. 2019 Aug;86(2):310-315. doi: 10.1002/ana.25525. In: Pagon RA, Adam MP, Ardinger HH, et al., editors. narp syndrome life expectancyis say a regular or irregular verb. All of these different genetic defects seem to have a common effect on the central nervous system, resulting in progressive neurological deterioration. Leigh Syndrome may result if the percentage of mutation is high enough. AM, Alston CL, Blakely EL, Sharma S, Hughes I, Lim A, de Goede C, McEntagart M, The neurologic tests comprised electromyogram and muscle biopsy; the ophthalmologic examination consisted of slit-lamp and fundus examinations, optical coherence tomography, visual field testing, and electrophysiology tests such as a full-field electroretinogram and multifocal electroretinogram; and genetic tests were performed for spinocerebellar ataxia. Affected infants may fail to grow and gain weight at the expected rate (failure to thrive). GeneReviews. NORD Guide to Rare Disorders. 1993;34:827-34. Services that benefit people who are visually impaired may also be helpful for some people with Leigh syndrome. Ann Neurol. The disorder is a maternally inherited mitochondrial disease. Leigh syndrome is a severe neurological disorder that usually becomes apparent in the first year of life. In some cases, initial symptoms may be more vague and include clumsiness, balance problems and behavioral or personality changes. Neuropathy, ataxia, and retinitis pigmentosa, also known as NARP syndrome, is a rare disease with mitochondrial inheritance that causes a variety of signs and symptoms chiefly affecting the nervous system [1] Beginning in childhood or early adulthood, most people with NARP experience numbness, tingling, or pain in the arms and legs ( sensory Batten disease is inherited as an autosomal recessive trait and occurs most in families of Northern European or Scandinavian ancestry.

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narp syndrome life expectancy