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Rajtar M. 'Small' data, isolated populations, and new categories of rare diseases in Finland and Poland. Anthropol Med 2023; 30:1-16. [PMID: 36760192 DOI: 10.1080/13648470.2022.2152633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
Health policy and academic discourses on rare diseases and people with rare conditions frequently employ terms such as 'low prevalence' and 'unique' to characterize the smallness of the population under consideration and to justify targeted action toward these patient groups. This paper draws from recent anthropological scholarship on smallness and data, ethnographic research in Finland and Poland, as well as document and media analysis to examine how data is utilized in the context of isolated populations that are considered sites of rare diseases in these two countries. Specifically, this paper juxtaposes the notion of Finnish Disease Heritage (FDH) with that of a 'Kashubian gene' in Poland. The concept of FDH was developed by Finnish researchers in the 1970s; it encompasses almost forty rare hereditary diseases that are significantly more prevalent in Finland than elsewhere globally. On the other hand, the notion of the 'Kashubian gene' was first utilized by the media and some members of the Polish medical community around 2008. Based on 'unstable' data gathered during genetic research, the term referred to the high prevalence of a rare metabolic disorder (Long-Chain 3-Hydroxyacyl-CoA Dehydrogenase (LCHAD) deficiency) among Kashubians, an ethnic minority that resides in Northern Poland's Pomerania region. Whereas FDH facilitated the production and branding of 'a unique Finnish genetic identity' (Tupasela 2016b, 61), the notion of the 'Kashubian gene' has engendered health policy interventions targeting members of this ethnic minority and has contributed to stigmatizing practices carried out against Kashubians.
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Affiliation(s)
- Małgorzata Rajtar
- Institute of Philosophy and Sociology, Polish Academy of Sciences, Warsaw, Poland
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2
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Jankowski M, Daca-Roszak P, Obracht-Prondzyński C, Płoski R, Lipska-Ziętkiewicz BS, Ziętkiewicz E. Genetic diversity in Kashubs: the regional increase in the frequency of several disease-causing variants. J Appl Genet 2022; 63:691-701. [PMID: 35971028 PMCID: PMC9637066 DOI: 10.1007/s13353-022-00713-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 07/12/2022] [Accepted: 07/18/2022] [Indexed: 12/02/2022]
Abstract
Differential distribution of genetic variants’ frequency among human populations is caused by the genetic drift in isolated populations, historical migrations, and demography. Some of these variants are identical by descent and represent founder mutations, which — if pathogenic in nature — lead to the increased frequency of otherwise rare diseases. The detection of the increased regional prevalence of pathogenic variants may shed light on the historical processes that affected studied populations and can help to develop effective screening and diagnostic strategies as a part of personalized medicine. Here, we discuss the specific genetic diversity in Kashubs, the minority group living in northern Poland, reflected in the biased distribution of some of the repetitively found disease-causing variants. These include the following: (1) c.662A > G (p.Asp221Gly) in LDLR, causing heterozygous familial hypercholesterolemia; (2) c.3700_3704del in BRCA1, associated with hereditary breast and ovarian cancer syndrome; (3) c.1528G > C (p.Glu510Gln) in HADHA, seen in long-chain 3-hydroxy acyl-CoA dehydrogenase (LCHAD) deficiency, and (4) c.1032delT in NPHS2, associated with steroid-resistant nephrotic syndrome.
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Affiliation(s)
- Maciej Jankowski
- Department of Biology and Medical Genetics, Medical University of Gdansk, Gdansk, Poland
| | | | | | - Rafał Płoski
- Department of Medical Genetics, Medical University of Warsaw, Warsaw, Poland
| | - Beata S Lipska-Ziętkiewicz
- Clinical Genetics Unit, Department of Biology and Medical Genetics, Medical University of Gdansk, Gdansk, Poland. .,Centre for Rare Diseases, Medical University of Gdansk, Gdansk, Poland.
| | - Ewa Ziętkiewicz
- Institute of Human Genetics, Polish Academy of Sciences, Poznan, Poland.
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3
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Dessein AF, Hebbar E, Vamecq J, Lebredonchel E, Devos A, Ghoumid J, Mention K, Dobbelaere D, Chevalier-Curt MJ, Fontaine M, Defoort S, Smirnov V, Douillard C, Dhaenens CM. A novel HADHA variant associated with an atypical moderate and late-onset LCHAD deficiency. Mol Genet Metab Rep 2022; 31:100860. [PMID: 35782617 PMCID: PMC9248219 DOI: 10.1016/j.ymgmr.2022.100860] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 03/06/2022] [Accepted: 03/07/2022] [Indexed: 12/29/2022] Open
Abstract
Background Long chain 3-hydroxyacyl-CoA dehydrogenase deficiency (LCHADD) is a rare inherited disease caused by pathogenic variants of HADHA gene. Along with signs common to fatty acid oxidation defects (FAOD), specific retina and heart alterations are observed. Because long-chain fatty acid oxidation is selectively affected, supplementations with short/medium-chain fats represent energetic sources bypassing the enzymatic blockade. Here, we report on an atypical presentation of the disease. Methods Clinical features were described with medical explorations including ophthalmic and cardiac examination. Biological underlying defects were investigated by measurements of biochemical metabolites and by fluxomic studies of mitochondrial β-oxidation. Whole exome sequencing and molecular validation of variants confirmed the diagnosis. Results The patient has developed at nine years an unlabeled maculopathy, and at 28 years, an acute cardiac decompensation without any premise. Blood individual acylcarnitine analysis showed a rise in hydroxylated long-chain fatty acids and fluxomic studies validated enzyme blockade consistent with LCHADD. Genetic analysis revealed the common p.(Glu510Gln) variant in HADHA, in trans with a novel variant c.1108G > A, p.(Gly370Arg) located in the NAD binding domain. Patient pathology was responsive to triheptanoin supplementation. Conclusion This atypical LCHADD form report should encourage the early assessment of biochemical and genetic testing as a specific management is recommended (combination with fast avoidance, low fat-high carbohydrate diet, medium-even-chain triglycerides or triheptanoin supplementation). Mild hyperpigmented macular dots could be the first and early symptom of moderate LCHAD. The novel HADHA c.1108G > A, p.(Gly370Arg) is hypomorphic and associated with moderate LCHAD. Atypical and late LCHAD can be deciphered by joint biochemical and genetical investigations. Acylcarnitines must be tested in unexplained macular dystrophy and/or dilated cardiomyopathy. Supplementation with the triglyceride triheptanoin is effective.
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4
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Knapp A, Jagła M, Madetko-Talowska A, Szewczyk K, Książek T, Końska K, Kwinta P. Paternal uniparental disomy of chromosome 2 resulting in a concurrent presentation of Crigler-Najjar syndrome type I and long-chain 3-hydroxyacyl-CoA dehydrogenase deficiency. Am J Med Genet A 2022; 188:1848-1852. [PMID: 35199468 DOI: 10.1002/ajmg.a.62696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 12/27/2021] [Accepted: 01/28/2022] [Indexed: 11/06/2022]
Abstract
This is the first report of the concurrent development of long-chain 3-hydroxyacyl-CoA dehydrogenase deficiency (LCHADD) and Crigler-Najjar syndrome type 1 (CNs1) inherited via uniparental disomy of chromosome 2, which are both autosomal recessive pathologies. Through an expanded newborn metabolic panel, a male infant was identified as having an acylcarnitine pattern typical for LCHADD, later confirmed to be caused by a well-characterized pathogenic variant in the HADHA gene located at 2p23. Prolonged non-hematologic jaundice requiring repetitive phototherapy prompted further genetic analysis, leading to the identification of another genetic abnormality consistent with CNs1, which was caused by a novel pathogenic variant in the UGT1A1 gene located at 2q37. The two identified point mutations in chromosome 2 were homozygous and present on separate arms, which indicated potential uniparental disomy. Microarray analysis of the genetic material from the patient and his parents confirmed paternal isodisomy of chromosome 2. Further studies are needed to identify other possible pathogenic variants located on the same defective chromosome, evaluate the combined effect of the two metabolic abnormalities, and plan the best possible treatment and care.
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Affiliation(s)
- Anna Knapp
- Department of Pediatrics, Chair of Pediatrics Jagiellonian University Medical College, Krakow, Poland
| | - Mateusz Jagła
- Department of Pediatrics, Chair of Pediatrics Jagiellonian University Medical College, Krakow, Poland
| | - Anna Madetko-Talowska
- University Children Hospital in Krakow, Krakow, Poland.,Department of Medical Genetics, Chair of Pediatrics Jagiellonian University Medical College, Krakow, Poland
| | - Katarzyna Szewczyk
- University Children Hospital in Krakow, Krakow, Poland.,Department of Medical Genetics, Chair of Pediatrics Jagiellonian University Medical College, Krakow, Poland
| | - Teofila Książek
- University Children Hospital in Krakow, Krakow, Poland.,Department of Medical Genetics, Chair of Pediatrics Jagiellonian University Medical College, Krakow, Poland
| | - Katarzyna Końska
- Department of Medical Genetics, Chair of Pediatrics Jagiellonian University Medical College, Krakow, Poland
| | - Przemko Kwinta
- Department of Pediatrics, Chair of Pediatrics Jagiellonian University Medical College, Krakow, Poland
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Marsden D, Bedrosian CL, Vockley J. Impact of newborn screening on the reported incidence and clinical outcomes associated with medium- and long-chain fatty acid oxidation disorders. Genet Med 2021; 23:816-829. [PMID: 33495527 PMCID: PMC8105167 DOI: 10.1038/s41436-020-01070-0] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 12/01/2020] [Accepted: 12/07/2020] [Indexed: 02/07/2023] Open
Abstract
Fatty acid oxidation disorders (FAODs) are potentially fatal inherited disorders for which management focuses on early disease detection and dietary intervention to reduce the impact of metabolic crises and associated spectrum of clinical symptoms. They can be divided functionally into long-chain (LC-FAODs) and medium-chain disorders (almost exclusively deficiency of medium-chain acyl-coenzyme A dehydrogenase). Newborn screening (NBS) allows prompt identification and management. FAOD detection rates have increased following the addition of FAODs to NBS programs in the United States and many developed countries. NBS-identified neonates with FAODs may remain asymptomatic with dietary management. Evidence from numerous studies suggests that NBS-identified patients have improved outcomes compared with clinically diagnosed patients, including reduced rates of symptomatic manifestations, neurodevelopmental impairment, and death. The limitations of NBS include the potential for false-negative and false-positive results, and the need for confirmatory testing. Although NBS alone does not predict the consequences of disease, outcomes, or management needs, subsequent genetic analyses may have predictive value. Genotyping can provide valuable information on the nature and frequency of pathogenic variants involved with FAODs and their association with specific phenotypes. Long-term follow-up to fully understand the clinical spectrum of NBS-identified patients and the effect of different management strategies is needed.
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Affiliation(s)
| | | | - Jerry Vockley
- Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
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6
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Diagnosis, genetic characterization and clinical follow up of mitochondrial fatty acid oxidation disorders in the new era of expanded newborn screening: A single centre experience. Mol Genet Metab Rep 2020; 24:100632. [PMID: 32793418 PMCID: PMC7414009 DOI: 10.1016/j.ymgmr.2020.100632] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 07/23/2020] [Accepted: 07/24/2020] [Indexed: 02/07/2023] Open
Abstract
Introduction Mitochondrial fatty acid oxidation disorders (FAODs) are a heterogeneous group of hereditary autosomal recessive diseases included in newborn screening (NBS) program in Italy. The aim of this study was to analyse FAODs cases, identified either clinically or by NBS,for clinical and genetic characterization and to evaluate a five years' experience of NBS, in the attempt to figure out the complexity of genotype-phenotype correlation and to confirm the clinical impact of NBS in our centre experience. Materials and methods We analysed FAODs patients diagnosed either by NBS or clinically, followed since February 2014 to April 2019 at the Regional Screening Centre and Inherited Metabolic Diseases Unit of Verona. Diagnosis was confirmed by plasma acylcarnitines, urinary organic acids, enzymatic and genetic testing. For not clear genotypes due to the presence of variants of uncertain significance, in silico predictive tools have been used as well as enzymatic activity assays. Patients underwent clinical, nutritional and biochemical follow up. Results We diagnosed 30 patients with FAODs. 20 by NBS: 3 CUD, 6 SCADD, 5 MCADD, 4 VLCADD, 2 MADD. Overall incidence of FAODs diagnosed by NBS was 1:4316 newborns. No one reported complications during the follow up period. 10 patients were diagnosed clinically: 2 CUD, 2 CPT2D, 1 VLCADD, 5 MADD. Mean age at diagnosis was 29.3 years. Within this group, complications or symptoms were reported at diagnosis, but not during follow-up. 12 mutations not previously reported in literature were found, all predicted as pathogenic or likely pathogenic. Discussion and conclusions Our study highlighted the great phenotypic variability and molecular heterogeneity of FAODs and confirmed the importance of a tailored follow up and treatment. Despite the short duration of follow up, early identification by NBS prevented diseases related complications and resulted in normal growth and psycho-motor development as well. Early identification by newborn screening prevents disease related complications. Newborn screening is changing prevalence clinical and molecular heterogeneity of FAODs. Genotype-phenotype correlation helps to achieve personalized follow-up and treatment. Enzymatic assay may be pivotal in predicting phenotype and symptoms severity. Diagnosis on clinical grounds is anyway important to change disease course.
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Key Words
- ALT, Alanine aminotransferase
- AST, Aspartate aminotransferase
- CACTD, carnitine-acylcarnitine translocase deficiency
- CK, creatine kinase
- CPT1/2 D, carnitine palmitoyl-CoA transferase 1/2 deficiency
- CUD, carnitine uptake defect
- DBS, dried blood spots
- DNA, Deoxyribonucleic acid
- Enzymatic activity
- Expanded newborn screening
- FAODs, fatty acid oxidation disorders
- Fatty acid oxidation defects
- Hypoglycaemia
- LCHADD, Long chain 3-hydroxyacyl-CoA dehydrogenase deficiency
- MADD, multiple acyl-CoA dehydrogenase deficiency
- MCADD, medium-chain acyl-CoA dehydrogenase deficiency
- Myopathy
- NBS, newborn screening
- NGS, next generation sequencing
- PCR, polymerase chain reaction
- SCADD, short chain acyl-CoA dehydrogenase deficiency
- Synergistic heterozygosity
- TFPD, trifunctional protein deficiency
- TMS, tandem mass spectrometry
- VLCADD, very-long-chain acyl-CoA dehydrogenase deficiency
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7
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Randon DN, Sperb-Ludwig F, Vianna FSL, Becker APP, Vargas CR, Sitta A, Sant'Ana AN, Schwartz IVD, Bitencourt FHD. Prevalence of the most common pathogenic variants in three genes for inborn errors of metabolism associated with sudden unexpected death in infancy: a population-based study in south Brazil. Genet Mol Biol 2020; 43:20190298. [PMID: 32706845 PMCID: PMC7380325 DOI: 10.1590/1678-4685-gmb-2019-0298] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Accepted: 06/17/2020] [Indexed: 12/31/2022] Open
Abstract
Citrullinemia type 1 (CTLNI), long-chain 3-hydroxyacyl-CoA dehydrogenase
deficiency (LCHADD), and mut0 methylmalonic acidemia (mut0
MMA) are inborn errors of metabolism (IEMs) associated with sudden unexpected
death in infancy (SUDI). Its most common pathogenic variants are:
c.1168G>A (CTLNI, ASS1 gene), c.1528G>C (LCHADD,
HADHA gene), c.655A>T and c.1106G>A
(mut0 MMA, MUT gene). Considering the absence of
estimates regarding the incidence of these diseases in Brazil, this study sought
to investigate the prevalence of its main pathogenic variants in a healthy
population in the southern region of the country. A total of 1,000 healthy
subjects from Rio Grande do Sul were included. Genotyping was performed by
real-time PCR. Individuals found to be heterozygous for c.1528G>C
underwent further acylcarnitine profile analysis by tandem mass
spectrophotometry. Allele and genotype frequencies were calculated considering
Hardy-Weinberg equilibrium. The c.1528G>C variant was detected in
heterozygosity in two subjects (carrier frequency = 1:500; allele frequency =
0.001; minimum prevalence of LCHADD = 1: 1,000,000), whose acylcarnitine
profiles were normal. Variants c.1168G>A, c.655A>T, and
c.1106G>A were not identified. These results denote the rarity of these
IEMs in Southern Brazil, highlighting the need to expand the investigation of
IEMs in relation to infant morbidity and mortality within the country.
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Affiliation(s)
- Dévora N Randon
- Universidade Federal do Rio Grande do Sul (UFRGS), Programa de Pós-Graduação em Genética e Biologia Molecular, Porto Alegre, RS, Brazil.,Hospital de Clínicas de Porto Alegre (HCPA), Centro de Pesquisa Experimental, Basic Research and Advanced Investigations in Neurosciences (BRAIN), Porto Alegre, RS, Brazil
| | - Fernanda Sperb-Ludwig
- Universidade Federal do Rio Grande do Sul (UFRGS), Programa de Pós-Graduação em Genética e Biologia Molecular, Porto Alegre, RS, Brazil.,Hospital de Clínicas de Porto Alegre (HCPA), Centro de Pesquisa Experimental, Basic Research and Advanced Investigations in Neurosciences (BRAIN), Porto Alegre, RS, Brazil
| | - Fernanda S L Vianna
- Universidade Federal do Rio Grande do Sul (UFRGS), Programa de Pós-Graduação em Genética e Biologia Molecular, Porto Alegre, RS, Brazil.,Hospital de Clínicas de Porto Alegre (HCPA), Centro de Pesquisa Experimental, Laboratório de Medicina Genômica, Porto Alegre, RS, Brazil.,Universidade Federal do Rio Grande do Sul (UFRGS), Departamento de Genética, Porto Alegre, RS, Brazil.,Hospital de Clínicas de Porto Alegre (HCPA), Instituto Nacional de Genética Médica Populacional (INAGEMP), Porto Alegre, RS, Brazil
| | - Ana P P Becker
- Universidade Federal do Rio Grande do Sul (UFRGS), Faculdade de Medicina, Porto Alegre, RS, Brazil
| | - Carmen R Vargas
- Universidade Federal do Rio Grande do Sul (UFRGS), Faculdade de Farmácia, Porto Alegre, RS, Brazil
| | - Angela Sitta
- Hospital de Clínicas de Porto Alegre (HCPA), Serviço de Genética Médica, Porto Alegre, RS, Brazil
| | - Alexia N Sant'Ana
- Universidade Federal do Rio Grande do Sul (UFRGS), Instituto de Biociências, Porto Alegre, RS, Brazil
| | - Ida V D Schwartz
- Universidade Federal do Rio Grande do Sul (UFRGS), Programa de Pós-Graduação em Genética e Biologia Molecular, Porto Alegre, RS, Brazil.,Hospital de Clínicas de Porto Alegre (HCPA), Centro de Pesquisa Experimental, Basic Research and Advanced Investigations in Neurosciences (BRAIN), Porto Alegre, RS, Brazil.,Hospital de Clínicas de Porto Alegre (HCPA), Serviço de Genética Médica, Porto Alegre, RS, Brazil.,Universidade Federal do Rio Grande do Sul (UFRGS), Departamento de Genética, Porto Alegre, RS, Brazil
| | - Fernanda H de Bitencourt
- Hospital de Clínicas de Porto Alegre (HCPA), Instituto Nacional de Genética Médica Populacional (INAGEMP), Porto Alegre, RS, Brazil
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8
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Exome-based search for recurrent disease-causing alleles in Russian population. Eur J Med Genet 2019; 62:103656. [DOI: 10.1016/j.ejmg.2019.04.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 04/12/2019] [Accepted: 04/21/2019] [Indexed: 11/18/2022]
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9
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Piekutowska-Abramczuk D, Kaliszewska M, Sułek A, Jurkowska N, Ołtarzewski M, Jabłońska E, Trubicka J, Głowacka A, Ciara E, Kowalski P, Langiewicz-Wojciechowska K, Tesarova M, Zeman J, Kierdaszuk B, Kuczyński D, Chmielewski D, Szymańska E, Bakuła A, Łusakowska A, Lipowska M, Brodacki B, Pera J, Dorobek M, Rydzanicz M, Płoski R, Chrzanowska KH, Bartnik E, Placha G, Kamińska A, Kostera-Pruszczyk A, Krajewska-Walasek M, Tońska K, Pronicka E. The frequency of mitochondrial polymerase gamma related disorders in a large Polish population cohort. Mitochondrion 2019; 47:179-187. [DOI: 10.1016/j.mito.2018.11.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2018] [Revised: 10/02/2018] [Accepted: 11/02/2018] [Indexed: 02/06/2023]
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Diebold I, Schön U, Horvath R, Schwartz O, Holinski-Feder E, Kölbel H, Abicht A. HADHA and HADHB gene associated phenotypes - Identification of rare variants in a patient cohort by Next Generation Sequencing. Mol Cell Probes 2019; 44:14-20. [PMID: 30682426 DOI: 10.1016/j.mcp.2019.01.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 01/17/2019] [Accepted: 01/20/2019] [Indexed: 12/31/2022]
Abstract
The heterooctameric mitochondrial trifunctional protein (MTP), composed of four α- and β-subunits harbours three enzymes that each perform a different function in mitochondrial fatty acid β-oxidation. Pathogenic variants in the MTP genes (HADHA and HADHB) cause MTP deficiency, a rare autosomal recessive metabolic disorder characterized by phenotypic heterogeneity ranging from severe, early-onset, cardiac disease to milder, later-onset, myopathy and neuropathy. Since metabolic myopathies and neuropathies are a group of rare genetic disorders and their associated muscle symptoms may be subtle, the diagnosis is often delayed. Here we evaluated data of 161 patients with myopathy and 242 patients with neuropathy via next generation sequencing (NGS) and report the diagnostic yield in three patients of this cohort by the detection of disease-causing variants in the HADHA or HADHB gene. The mitigated phenotypes of this treatable disease were missed by the newborn screening, highlighting the importance of phenotype-based NGS analysis in patients with rare and clinically very variable disorders such as MTP deficiency.
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Affiliation(s)
| | | | - Rita Horvath
- Department of Clinical Neuroscience, University of Cambridge, Cambridge, UK
| | - Oliver Schwartz
- Department of Neuropediatrics, University Children's Hospital Muenster, Muenster, Germany
| | | | - Heike Kölbel
- Department of Pediatric Neurology, Developmental Neurology and Social Pediatrics, University of Essen, Germany
| | - Angela Abicht
- Medical Genetics Center, Munich, Germany; Department of Neurology, Friedrich-Baur-Institute, Klinikum der Ludwig-Maximilians-University, Munich, Germany.
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11
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Nedoszytko B, Siemińska A, Strapagiel D, Dąbrowski S, Słomka M, Sobalska-Kwapis M, Marciniak B, Wierzba J, Skokowski J, Fijałkowski M, Nowicki R, Kalinowski L. High prevalence of carriers of variant c.1528G>C of HADHA gene causing long-chain 3-hydroxyacyl-CoA dehydrogenase deficiency (LCHADD) in the population of adult Kashubians from North Poland. PLoS One 2017; 12:e0187365. [PMID: 29095929 PMCID: PMC5667839 DOI: 10.1371/journal.pone.0187365] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Accepted: 10/18/2017] [Indexed: 12/14/2022] Open
Abstract
Background/Objectives The mitochondrial β-oxidation of fatty acids is a complex catabolic pathway. One of the enzymes of this pathway is the heterooctameric mitochondrial trifunctional protein (MTP), composed of four α- and β-subunits. Mutations in MTP genes (HADHA and HADHB), both located on chromosome 2p23, cause MTP deficiency, a rare autosomal recessive metabolic disorder characterized by decreased activity of MTP. The most common MTP mutation is long-chain 3-hydroxyacyl-CoA dehydrogenase (LCHAD) deficiency caused by the c.1528G>C (rs137852769, p.Glu510Gln) substitution in exon 15 of the HADHA gene. Subjects/Methods We analyzed the frequency of genetic variants in the HADHA gene in the adults of Kashubian origin from North Poland and compared this data in other Polish provinces. Results We found a significantly higher frequency of HDHA c.1528G>C (rs137852769, p.Glu510Gln) carriers among Kashubians (1/57) compared to subjects from other regions of Poland (1/187). We found higher frequency of c.652G>C (rs71441018, pVal218Leu) polymorphism in the HADHA gene within population of Silesia, southern Poland (1/107) compared to other regions. Conclusion Our study indicate described high frequency of c.1528G>C variant of HADHA gene in Kashubian population, suggesting the founder effect. For the first time we have found high frequency of rs71441018 in the South Poland Silesian population.
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Affiliation(s)
- Bogusław Nedoszytko
- Department of Dermatology, Venereology and Allergology, Medical University of Gdansk, Gdańsk, Poland
- * E-mail: (BN); (DS)
| | - Alicja Siemińska
- Department of Pneumonology and Allergology, Medical University of Gdansk, Gdańsk, Poland
| | - Dominik Strapagiel
- Biobank Lab, Department of Molecular Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, Lodz, Poland
- BBMRI.pl Consortium, Wrocław, Poland
- * E-mail: (BN); (DS)
| | | | - Marcin Słomka
- Biobank Lab, Department of Molecular Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, Lodz, Poland
- BBMRI.pl Consortium, Wrocław, Poland
| | - Marta Sobalska-Kwapis
- Biobank Lab, Department of Molecular Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, Lodz, Poland
- BBMRI.pl Consortium, Wrocław, Poland
| | - Błażej Marciniak
- Biobank Lab, Department of Molecular Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, Lodz, Poland
- BBMRI.pl Consortium, Wrocław, Poland
| | - Jolanta Wierzba
- Department of Pediatrics, Hematology and Oncology, Medical University of Gdansk, Gdańsk, Poland
| | - Jarosław Skokowski
- BBMRI.pl Consortium, Wrocław, Poland
- Department of Oncological Surgery, Medical University of Gdansk, Gdańsk, Poland
| | - Marcin Fijałkowski
- I Department of Cardiology, Medical University of Gdansk, Gdańsk, Poland
| | - Roman Nowicki
- Department of Dermatology, Venereology and Allergology, Medical University of Gdansk, Gdańsk, Poland
| | - Leszek Kalinowski
- BBMRI.pl Consortium, Wrocław, Poland
- Department of Medical Laboratory Diagnostic, Central Bank of Frozen Tissues and Genetic Specimens, Medical University of Gdansk, Gdańsk, Poland
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12
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Kivelä TT. Early dietary therapy for long-chain 3-hydroxyacyl-CoA dehydrogenase deficiency can maintain vision despite subnormal retinal function. Acta Paediatr 2016; 105:1461. [PMID: 27639177 DOI: 10.1111/apa.13595] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 09/14/2016] [Indexed: 11/28/2022]
Affiliation(s)
- Tero T. Kivelä
- Paediatric Ophthalmology Service; Department of Ophthalmology; University of Helsinki and Helsinki University Hospital; Helsinki Finland
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Stefanska A, Gaffke L, Kaczorowska AK, Plotka M, Dabrowski S, Kaczorowski T. Highly thermostable RadA protein from the archaeon Pyrococcus woesei enhances specificity of simplex and multiplex PCR assays. J Appl Genet 2015; 57:239-49. [PMID: 26337425 DOI: 10.1007/s13353-015-0314-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2015] [Revised: 08/13/2015] [Accepted: 08/18/2015] [Indexed: 10/23/2022]
Abstract
The radA gene of the hyperthermophilic archaeon Pyrococcus woesei (Thermococcales) was cloned and overexpressed in Escherichia coli. The 1050-bp gene codes for a 349-amino-acid polypeptide with an M r of 38,397 which shows 100 % positional amino acid identity to Pyrococcus furiosus RadA and 27.1 % to the E. coli RecA protein. Recombinant RadA was overproduced in Escherichia coli as a His-tagged fusion protein and purified to electrophoretic homogeneity using a simple procedure consisting of ammonium sulfate precipitation and metal-affinity chromatography. In solution RadA exists as an undecamer (11-mer). The protein binds both to ssDNA and dsDNA. RadA has been found to be highly thermostable, it remains almost unaffected by a 4-h incubation at 94 °C. The addition of the RadA protein to either simplex or multiplex PCR assays, significantly improves the specificity of DNA amplification by eliminating non-specific products. Among applications tested the RadA protein proved to be useful in allelic discrimination assay of HADHA gene associated with long-chain 3-hydroxylacyl-CoA dehydrogenase deficiency that in infancy may lead to hypotonia, serious heart and liver problems and even sudden death.
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Affiliation(s)
- Aleksandra Stefanska
- Department of Microbiology, University of Gdansk, Wita Stwosza 59, 80-308, Gdansk, Poland
| | - Lidia Gaffke
- Department of Microbiology, University of Gdansk, Wita Stwosza 59, 80-308, Gdansk, Poland
| | - Anna-Karina Kaczorowska
- Collection of Plasmids and Microorganisms, University of Gdansk, Wita Stwosza 59, 80-308, Gdansk, Poland
| | - Magdalena Plotka
- Department of Microbiology, University of Gdansk, Wita Stwosza 59, 80-308, Gdansk, Poland
| | | | - Tadeusz Kaczorowski
- Department of Microbiology, University of Gdansk, Wita Stwosza 59, 80-308, Gdansk, Poland.
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Lipska BS, Balasz-Chmielewska I, Morzuch L, Wasielewski K, Vetter D, Borzecka H, Drozdz D, Firszt-Adamczyk A, Gacka E, Jarmolinski T, Ksiazek J, Kuzma-Mroczkowska E, Litwin M, Medynska A, Silska M, Szczepanska M, Tkaczyk M, Wasilewska A, Schaefer F, Zurowska A, Limon J. Mutational analysis in podocin-associated hereditary nephrotic syndrome in Polish patients: founder effect in the Kashubian population. J Appl Genet 2013; 54:327-33. [PMID: 23645318 PMCID: PMC3721000 DOI: 10.1007/s13353-013-0147-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2013] [Revised: 03/22/2013] [Accepted: 03/27/2013] [Indexed: 01/18/2023]
Abstract
Hereditary nephrotic syndrome is caused by mutations in a number of different genes, the most common being NPHS2. The aim of the study was to identify the spectrum of NPHS2 mutations in Polish patients with the disease. A total of 141 children with steroid-resistant nephrotic syndrome (SRNS) were enrolled in the study. Mutational analysis included the entire coding sequence and intron boundaries of the NPHS2 gene. Restriction fragment length polymorphism (RFLP) and TaqMan genotyping assay were applied to detect selected NPHS2 sequence variants in 575 population-matched controls. Twenty patients (14 %) had homozygous or compound heterozygous NPHS2 mutations, the most frequent being c.1032delT found in 11 children and p.R138Q found in four patients. Carriers of the c.1032delT allele were exclusively found in the Pomeranian (Kashubian) region, suggesting a founder effect origin. The 14 % NPHS2 gene mutation detection rate is similar to that observed in other populations. The heterogeneity of mutations detected in the studied group confirms the requirement of genetic testing the entire NPHS2 coding sequence in Polish patients, with the exception of Kashubs, who should be initially screened for the c.1032delT deletion.
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Affiliation(s)
- Beata S Lipska
- Department of Biology and Genetics, Medical University of Gdansk, Debinki str. 1, 80211, Gdansk, Poland.
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15
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Specjalski K, Porzezińska M, Siemińska A, Słomiński JM, Jassem E. The osteocalcin gene rs1800247 polymorphism in Kashubian population. Rheumatol Int 2012; 33:3043-4. [PMID: 23233116 PMCID: PMC3832755 DOI: 10.1007/s00296-012-2575-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2012] [Accepted: 10/21/2012] [Indexed: 11/30/2022]
Abstract
Osteocalcin is the most important noncollagenous protein component of the bone. Polymorphisms of osteocalcin gene were reported to be associated with bone mineral density. However, this relation was only confirmed in some populations. In this study presence of C/T polymorphism in osteocalcin gene (rs1800247) was determined in Kashubian population (northern Poland). The frequencies of variants were CC 9 %, TC 31 %, and TT 60 %, with no significant differences between genders. The genotypes were in Hardy-Weinberg equilibrium.
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Affiliation(s)
- Krzysztof Specjalski
- Department of Allergology, Medical University of Gdansk, ul. Debinki 7, 80-952, Gdansk, Poland,
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Fletcher AL, Pennesi ME, Harding CO, Weleber RG, Gillingham MB. Observations regarding retinopathy in mitochondrial trifunctional protein deficiencies. Mol Genet Metab 2012; 106:18-24. [PMID: 22459206 PMCID: PMC3506186 DOI: 10.1016/j.ymgme.2012.02.015] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2012] [Revised: 02/23/2012] [Accepted: 02/23/2012] [Indexed: 12/31/2022]
Abstract
Although the retina is thought to primarily rely on glucose for fuel, inherited deficiency of one or more activities of mitochondrial trifunctional protein results in a pigmentary retinopathy leading to vision loss. Many other enzymatic deficiencies in fatty acid oxidation pathways have been described, none of which results in retinal complications. The etiology of retinopathy among patients with defects in trifunctional protein is unknown. Trifunctional protein is a heteroctomer; two genes encode the alpha and beta subunits of TFP respectively, HADHA and HADHB. A common mutation in HADHA, c.1528G>C, leads to a single amino acid substitution, p. Glu474Gln, and impairs primarily long-chain 3-hydroxyacyl-CoA dehydrogenase (LCHAD) activity leading to LCHAD deficiency (LCHADD). Other mutations in HADHA or HADHB often lead to significant reduction in all three enzymatic activities and result in trifunctional protein deficiency (TFPD). Despite many similarities in clinical presentation and phenotype, there is growing evidence that they can result in different chronic complications. This review will outline the clinical similarities and differences between LCHADD and TFPD, describe the course of the associated retinopathy, propose a genotype/phenotype correlation with the severity of retinopathy, and discuss the current theories about the etiology of the retinopathy.
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Affiliation(s)
- Autumn L Fletcher
- Department of Molecular & Medical Genetics, School of Medicine, Oregon Health & Science University, Mail Code L-103, 3181 SW Sam Jackson Park Rd Portland, OR 97239, USA.
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Joost K, Ounap K, Zordania R, Uudelepp ML, Olsen RK, Kall K, Kilk K, Soomets U, Kahre T. Prevalence of Long-Chain 3-Hydroxyacyl-CoA Dehydrogenase Deficiency in Estonia. JIMD Rep 2011; 2:79-85. [PMID: 23430857 DOI: 10.1007/8904_2011_51] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2011] [Revised: 03/12/2011] [Accepted: 03/17/2011] [Indexed: 12/13/2022] Open
Abstract
The aim of our study was to evaluate the prevalence of long chain 3-hydroxyacyl-CoA dehydrogenase deficiency (LCHADD) in the general Estonian population and among patients with symptoms suggestive of fatty acid oxidation (FAO) defects. We collected DNA from a cohort of 1,040 anonymous newborn blood spot samples. We screened these samples for the presence of the common c.1528G>C mutation in the HADHA gene. Based on the clinical suspicion of FAO defects, we screened suspected individuals since 2004 for the common c.1528G>C mutation in the HADHA gene and since 2008 in addition by tandem mass spectrometric analysis of plasma acylcarnitines. Our results showed that the carrier frequency of the c.1528G>C mutation in the Estonian population is high - 1:173. During the screening of symptomatic patients, we identified five LCHADD patients in four families. Three patients were retrospectively identified by molecular screening of the HADHA gene. One patient was homozygous for the c.1528G>C mutation in the HADHA gene, and two siblings were compound heterozygotes with HADHA genotype c.[1528G>C]+[1690-2A>G]. Among patients tested using acylcarnitine profiling, we identified two cases with an abnormal acylcarnitine profile typical to LCHADD. Molecular analysis showed homozygosity for c.1528G>C mutation. Based on a carrier frequency of 1:173 (95% Confidence Interval 1:76-1:454) and taking into account that the c.1528G>C mutation makes up 87.5% of disease alleles in Estonian LCHADD patients, the estimated prevalence of LCHADD in Estonia would be 1: 91,700.
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Affiliation(s)
- K Joost
- The Centre of Excellence for Translational Medicine, University of Tartu, Tartu, Estonia,
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