• ADCK3 mutations with epilepsy, stroke-like episodes and ataxia: a POLG mimic? 

      Hikmat, Omar; Tzoulis, Charalampos; Knappskog, Per; Johansson, Stefan; Boman, Helge; Sztromwasser, Pawel Szymon; Lien, Espen; Brodtkorb, Eylert; Ghezzi, Daniele; Bindoff, Laurence (Peer reviewed; Journal article, 2016-07)
      Background and purpose: Defects of coenzyme Q10 (CoQ10) metabolism cause a variety of disorders ranging from isolated myopathy to multisystem involvement. ADCK3 is one of several genes associated with CoQ10 deficiency that ...
    • Defective i⁶A37 Modification of Mitochondrial and Cytosolic tRNAs Results from Pathogenic Mutations in TRIT1 and Its Substrate tRNA 

      Yarham, John W.; Lamichhane, Tek N.; Pyle, Angela; Mattijssen, Sandy; Baruffini, Enrico; Bruni, Francesco; Donnini, Claudia; Vassilev, Alex; He, Langping; Blakely, Emma L.; Griffin, Helen; Santibanez-Koref, Mauro; Bindoff, Laurence; Ferrero, Iliana; Chinnery, Patrick F.; McFarland, Robert; Maraia, Richard J.; Taylor, Robert W. (Peer reviewed; Journal article, 2014-06-05)
      Identifying the genetic basis for mitochondrial diseases is technically challenging given the size of the mitochondrial proteome and the heterogeneity of disease presentations. Using next-generation exome sequencing, we ...
    • Defective mitochondrial DNA homeostasis in the substantia nigra in Parkinson disease 

      Dölle, Christian; Flønes, Irene Hana; Sanchez Nido, Gonzalo; Miletic, Hrvoje; Osuagwu, Nelson; Kristoffersen, Stine; Lilleng, Peer Kåre; Larsen, Jan Petter; Tysnes, Ole-Bjørn; Haugarvoll, Kristoffer; Bindoff, Laurence; Tzoulis, Charalampos (Peer reviewed; Journal article, 2016-11-22)
      Increased somatic mitochondrial DNA (mtDNA) mutagenesis causes premature aging in mice, and mtDNA damage accumulates in the human brain with aging and neurodegenerative disorders such as Parkinson disease (PD). Here, we ...
    • Disease-specific phenotypes in iPSC-derived neural stem cells with POLG mutations 

      Liang, Xiao; Kristiansen, Cecilie Katrin; Mostafavi, Sepideh; Vatne, Guro H.; Zantingh, Gina; Kianian, Atefeh; Tzoulis, Charalampos; Høyland, Lena Elise; Ziegler, Mathias; Perez, Roberto Megias; Furriol, Jessica; Zhang, Zhuoyuan; Balafkan, Novin; Hong, Yu; Siller, Richard; Sullivan, Gareth; Bindoff, Laurence (Journal article; Peer reviewed, 2020)
      Mutations in POLG disrupt mtDNA replication and cause devastating diseases often with neurological phenotypes. Defining disease mechanisms has been hampered by limited access to human tissues, particularly neurons. Using ...
    • Fever-related ataxia: a case report of CAPOS syndrome 

      Stenshorne, Ida; Rasmussen, Magnhild; Salvanos, Panagiotis; Tallaksen, Chantal; Bindoff, Laurence; Koht, Jeanette (Journal article; Peer reviewed, 2019)
      Background: CAPOS (Cerebellar ataxia, Areflexia, Pes cavus, Optic atrophy and Sensorineural hearing loss) syndrome is caused by the heterozygous mutation, c.2452G > A, in the ATP1A3 gene. Other mutations in this gene ...
    • GBA2 mutations cause a Marinesco-Sjogren-like syndrome: Genetic and biochemical studies 

      Haugarvoll, Kristoffer; Johansson, Stefan; Rodriguez, Carlos E.; Boman, Helge; Haukanes, Bjørn Ivar; Bruland, Ove; Roque, Francisco; Jonassen, Inge; Blomqvist, Maria; Telstad, Wenche; Månsson, Jan-Eric; Knappskog, Per; Bindoff, Laurence (Peer reviewed; Journal article, 2017-01-04)
      Background: With the advent new sequencing technologies, we now have the tools to understand the phenotypic diversity and the common occurrence of phenocopies. We used these techniques to investigate two Norwegian families ...
    • Genetic and hypoxic alterations of the microRNA-210-ISCU1/2 axis promote iron-sulfur deficiency and pulmonary hypertension 

      White, Kevin; Lu, Yu; Annis, Sofia; Hale, Andrew E.; Chau, B. Nelson; Dahlman, James E.; Hemann, Craig; Opotowsky, Alexander R.; Vargas, Sara O.; Rosas, Ivan; Perrella, Mark A.; Osorio, Juan C.; Haley, Kathleen J.; Graham, Brian B.; Kumar, Rahul; Saggar, Rajan; Saggar, Rajeev; Wallace, W. Dean; Ross, David J.; Khan, Omar F.; Bader, Andrew; Gochuico, Bernadette R.; Matar, Majed; Polach, Kevin; Johannessen, Nicolai; Prosser, Haydn M.; Anderson, Daniel G.; Langer, Robert; Zweier, Jay L.; Bindoff, Laurence; Systrom, David; Waxman, Aaron B.; Jin, Richard C.; Chan, Stephen Y. (Peer reviewed; Journal article, 2015)
      Iron–sulfur (Fe‐S) clusters are essential for mitochondrial metabolism, but their regulation in pulmonary hypertension (PH) remains enigmatic. We demonstrate that alterations of the miR‐210‐ISCU1/2 axis cause Fe‐S deficiencies ...
    • Global FKRP Registry: observations in more than 300 patients with Limb Girdle Muscular Dystrophy R9 

      Murphy, Lindsay B.; Schreiber-Katz, Olivia; Rafferty, Karen; Robertson, Agata; Topf, Ana; Willis, Tracey A.; Heidemann, Marcel; Thiele, Simone; Bindoff, Laurence; Laurent, Jean-Pierre; Lochmüller, Hanns; Mathews, Katherine; Mitchell, Claudia; Stevenson, John Herbert; Vissing, John; Woods, Lacey; Walter, Maggie C.; Straub, Volker (Journal article; Peer reviewed, 2020-04)
      Objective The Global FKRP Registry is a database for individuals with conditions caused by mutations in the Fukutin‐Related Protein (FKRP) gene: limb girdle muscular dystrophy R9 (LGMDR9, formerly LGMD2I) and congenital ...
    • Mental health and health related quality of life in mitochondrial POLG disease 

      Hikmat, Omar; Vederhus, Bente Johanne; Benestad, Merete Roineland; Engeset, Ida Malen E.; Klingenberg, Claus; Rasmussen, Magnhild; Tallaksen, Chantal; Brodtkorb, Eylert; Elgen, Irene Bircow; Bindoff, Laurence (Journal article; Peer reviewed, 2020)
      We aimed to assess the impact of POLG disease on mental health and quality of life in 15 patients using the Symptom Checklist-90-R (SCL-90-R) and Short-Form 36 Health Survey (RAND-36). We found increased scores in all nine ...
    • Mitochondrial DNA depletion in sporadic inclusion body myositis 

      Bhatt, Padmanabh S.; Tzoulis, Charalampos; Balafkan, Novin; Miletic, Hrvoje; Tran, Gia Tuong Thi; Sanaker, Petter Schandl; Bindoff, Laurence (Peer reviewed; Journal article, 2019)
      Sporadic inclusion body myositis (sIBM) is a late onset disorder of unkown aetiology. Mitochondrial changes such as cytochrome oxidase deficient fibres are a well recognised feature and mitochondrial DNA (mtDNA) deletions ...
    • Molecular dysfunction associated with the human mitochondrial 3302A>G mutation in the MTTL1 (mt-tRNA Leu(UUR))) gene 

      Maniura-Weber, Katharina; Helm, Mark; Engemann, Katrin; Eckertz, Sabrina; Möllers, Myriam; Schauen, Matthias; Haryapetyan, Armine; Kleist-Retzow, Jürgen-Christoph von; Lightowlers, Robert N.; Bindoff, Laurence; Wiesner, Rudolf J. (Peer reviewed; Journal article, 2006-11-27)
      The gene encoding mt-tRNALeu(UUR), MT-TL1, is a hotspot for pathogenic mtDNA mutations. Amongst the first to be described was the 3302A>G transition which resulted in a substantial accumulation in patient muscle of RNA19, ...
    • Molecular pathogenesis of polymerase gamma-related neurodegeneration 

      Tzoulis, Charalampos; Tran, Gia Tuong Thi; Coxhead, Jonathan; Bertelsen, Bjørn; Lilleng, Peer Kåre; Balafkan, Novin; Payne, Brendan; Miletic, Hrvoje; Chinnery, Patrick F.; Bindoff, Laurence (Peer reviewed; Journal article, 2014-07)
      Objective: Polymerase gamma (POLG) mutations are a common cause of mitochondrial disease and have also been linked to neurodegeneration and aging. We studied the molecular mechanisms underlying POLG-related neurodegeneration ...
    • MRI characterisation of adult onset alpha-methylacyl-coA racemase deficiency diagnosed by exome sequencing 

      Haugarvoll, Kristoffer; Johansson, Stefan; Tzoulis, Charalampos; Haukanes, Bjørn Ivar; Bredrup, Cecilie; Neckelmann, Gesche; Boman, Helge; Knappskog, Per; Bindoff, Laurence (Peer reviewed; Journal article, 2013-01-03)
      Background: Correct diagnosis is pivotal to understand and treat neurological disease. Herein, we report the diagnostic work-up utilizing exome sequencing and the characterization of clinical features and brain MRI in two ...
    • A multicenter study on Leigh syndrome: disease course and predictors of survival 

      Sofou, Kalliopi; De Coo, Irenaeus F. M.; Isohanni, Pirjo; Ostergaard, Elsebet; Naess, Karin; De Meirleir, Linda; Tzoulis, Charalampos; Uusimaa, Johanna; De Angst, Isabell B.; Lönnqvist, Tuula; Pihko, Helena; Mankinen, Katariina; Bindoff, Laurence; Tulinius, Már; Darin, Niklas (Peer reviewed; Journal article, 2014-04-15)
      Background: Leigh syndrome is a progressive neurodegenerative disorder, associated with primary or secondary dysfunction of the mitochondrial oxidative phosphorylation. Despite the fact that Leigh syndrome is the most ...
    • Neurofilament light chain predicts disease activity in relapsing-remitting MS 

      Varhaug, Kristin Nielsen; Barro, Christian; Bjørnevik, Kjetil Lauvland; Myhr, Kjell-Morten; Torkildsen, Øivind; Wergeland, Stig; Bindoff, Laurence; Kuhle, Jens; Vedeler, Christian A. (Peer reviewed; Journal article, 2018)
      Objective: To investigate whether serum neurofilament light chain (NF-L) and chitinase 3-like 1 (CHI3L1) predict disease activity in relapsing-remitting MS (RRMS). Methods: A cohort of 85 patients with RRMS were followed ...
    • PNKP Mutations Identified by Whole-Exome Sequencing in a Norwegian Patient with Sporadic Ataxia and Edema 

      Tzoulis, Charalampos; Sztromwasser, Pawel Szymon; Johansson, Stefan; Gjerde, Ivar Otto; Knappskog, Per; Bindoff, Laurence (Journal article, 2017-02)
      We identified PNKP mutations in a Norwegian woman with AOA. This patient had the typical findings with cognitive dysfunction, peripheral neuropathy, cerebellar dysarthria, horizontal nystagmus, oculomotor apraxia, and ...
    • Progressive striatal necrosis associated with anti-NMDA receptor antibodies 

      Tzoulis, Charalampos; Vedeler, Christian A.; Haugen, Mette; Storstein, Anette; Tran, Gia Tuong Thi; Gjerde, Ivar Otto; Biermann, Martin; Schwarzlmüller, Thomas; Bindoff, Laurence (Peer reviewed; Journal article, 2013-05-31)
      Background: We report a case of childhood onset, generalized dystonia due to slowly progressive bilateral striatal necrosis associated with anti-N-methyl-D-aspartate receptor (NMDAR) antibodies. This clinical phenotype has ...
    • Simplifying the clinical classification of polymerase gamma (POLG) disease based on age of onset; studies using a cohort of 155 cases 

      Hikmat, Omar; Naess, Karin; Engvall, Martin; Klingenberg, Claus; Rasmussen, Magnhild; Tallaksen, Chantal; Brodtkorb, Eylert; Østergaard, Elsebet; de Coo, Irenaeus F.M.; Pias-Peleteiro, Leticia; Isohanni, Pirjo; Uusimaa, Johanna; Darin, Niklas; Rahman, Shamima; Bindoff, Laurence (Journal article; Peer reviewed, 2020)
      Background Variants in POLG are one of the most common causes of inherited mitochondrial disease. Phenotypic classification of POLG disease has evolved haphazardly making it complicated and difficult to implement in ...
    • Spastic paraplegia type 7 is associated with multiple mitochondrial DNA deletions 

      Wedding, Iselin Marie; Koht, Jeanette; Tran, Gia Tuong Thi; Misceo, Doriana; Selmer, Kaja Kristine; Holmgren, Asbjørn; Frengen, Eirik; Bindoff, Laurence; Tallaksen, Chantal; Tzoulis, Charalampos (Peer reviewed; Journal article, 2014-01-22)
      Spastic paraplegia 7 is an autosomal recessive disorder caused by mutations in the gene encoding paraplegin, a protein located at the inner mitochondrial membrane and involved in the processing of other mitochondrial ...