Blar i Bergen Open Research Archive på forfatter "Aukrust, Ingvild"
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Association of a Low-Frequency Variant in HNF1A With Type 2 Diabetes in a Latino Population
Estrada, Karol; Aukrust, Ingvild; Bjørkhaug, Lise; Najmi, Laeya Abdoli; Njølstad, Pål Rasmus; MacArthur, Daniel G.; The SIGMA Type 2 Diabetes Consortium (Peer reviewed; Journal article, 2014-06)Importance: Latino populations have one of the highest prevalences of type 2 diabetes worldwide. Objectives: To investigate the association between rare protein-coding genetic variants and prevalence of type 2 diabetes in ... -
BRCA1 Norway: comparison of classifcation for BRCA1 germline variants detected in families with suspected hereditary breast and ovarian cancer between different laboratories
Hovland, Henrikke Nilsen; Al-Adhami, Rafal; Ariansen, Sarah Louise; Van Ghelue, Marijke; Sjursen, Wenche; Anfinsen, Sigrid Lima; Bolstad, Marte; Berger, Amund Holte; Vetti, Hildegunn Høberg; Knappskog, Per Morten; Haukanes, Bjørn Ivar; Aukrust, Ingvild; Ognedal, Elisabet (Journal article; Peer reviewed, 2022)Pathogenic germline variants in Breast cancer susceptibility gene 1 (BRCA1) predispose carriers to hereditary breast and ovarian cancer (HBOC). Through genetic testing of patients with suspected HBOC an increasing number ... -
Characterisation of HNF1A variants in paediatric diabetes in Norway using functional and clinical investigations to unmask phenotype and monogenic diabetes
Svalastoga, Pernille; Kaci, Alba; Molnes, Janne; Solheim, Marie Holm; Johansson, Bente Berg; Krogvold, Lars; Skrivarhaug, Torild; Valen, Eivind; Johansson, Stefan; Molven, Anders; Sagen, Jørn Vegard; Søfteland, Eirik; Bjørkhaug, Lise; Tjora, Erling; Aukrust, Ingvild; Njølstad, Pål Rasmus (Journal article; Peer reviewed, 2023)Aims/hypothesis Correctly diagnosing MODY is important, as individuals with this diagnosis can discontinue insulin injections; however, many people are misdiagnosed. We aimed to develop a robust approach for determining ... -
Chip protein U-box domain truncation affects Purkinje neuron morphology and leads to behavioral changes in zebrafish
Pakdaman, Yasaman; Denker, Elsa; Austad, Eirik; Norton, William H.J.; Rolfsnes, Hans Olav; Bindoff, Laurence Albert; Tzoulis, Charalampos; Aukrust, Ingvild; Knappskog, Per Morten; Johansson, Stefan; Ellingsen, Ståle (Journal article; Peer reviewed, 2021-09-24)The ubiquitin ligase CHIP (C-terminus of Hsc70-interacting protein) is encoded by STUB1 and promotes ubiquitination of misfolded and damaged proteins. CHIP deficiency has been linked to several diseases, and mutations in ... -
Clinical Cases and the Molecular Profiling of a Novel Childhood Encephalopathy-Causing GNAO1 Mutation P170R
Larasati, Yonika A.; Solis, Gonzalo P.; Koval, Alexey; Griffiths, Silja Torvik; Berentsen, Ragnhild Drage; Aukrust, Ingvild; Lesca, Gaetan; Chatron, Nicolas; Ville, Dorothée; Korff, Christian M.; Katanaev, Vladimir L. (Journal article; Peer reviewed, 2023)De novo mutations in GNAO1, the gene encoding the major neuronal G protein Gαo, cause a spectrum of pediatric encephalopathies with seizures, motor dysfunction, and developmental delay. Of the >80 distinct missense pathogenic ... -
The contribution of functional HNF1A variants and polygenic susceptibility to risk of type 2 diabetes in ancestrally diverse populations
Stalbow, Lauren; Preuss, Michael H.; Smit, Roelof A.J.; Chami, Nathalie; Bjørkhaug, Lise; Aukrust, Ingvild; Gloyn, Anna L; Loos, Ruth J.F. (Journal article; Peer reviewed, 2023)Aims/hypothesis: We examined the contribution of rare HNF1A variants to type 2 diabetes risk and age of diagnosis, and the extent to which their impact is affected by overall genetic susceptibility, across three ancestry ... -
Dominant ARL3-related retinitis pigmentosa
Holtan, Josephine Prener; Teigen, Knut; Aukrust, Ingvild; Bragadottir, Ragnheidur; Houge, Gunnar (Peer reviewed; Journal article, 2019)Purpose: To clinically and genetically characterise a second family with dominant ARL3-related retinitis pigmentosa due to a specific ARL3 missense variant, p.(Tyr90Cys). Methods: Clinical examination included optical ... -
The E3 SUMO ligase PIASγ is a novel interaction partner regulating the activity of diabetes associated hepatocyte nuclear factor-1α
Kaci, Alba; Keindl, Magdalena; Solheim, Marie Holm; Njølstad, Pål Rasmus; Bjørkhaug, Lise; Aukrust, Ingvild (Peer reviewed; Journal article, 2018-08-24)The transcription factor hepatocyte nuclear factor-1α (HNF-1A) is involved in normal pancreas development and function. Rare variants in the HNF1A gene can cause monogenic diabetes, while common variants confer type 2 ... -
Functional Analyses of Rare Germline Missense BRCA1 Variants Located within and outside Protein Domains with Known Functions
Hovland, Henrikke Nilsen; Mchaina, Eunice Kabanyana; Vetti, Hildegunn Høberg; Ariansen, Sarah Louise; Sjursen, Wenche; Van Ghelue, Marijke; Haukanes, Bjørn Ivar; Knappskog, Per Morten; Aukrust, Ingvild; Berge, Elisabet Ognedal (Journal article; Peer reviewed, 2023-01-19)The BRCA1 protein is implicated in numerous important cellular processes to prevent genomic instability and tumorigenesis, and pathogenic germline variants predispose carriers to hereditary breast and ovarian cancer (HBOC). ... -
Functional characterization of HNF4A gene variants identify promoter and cell line specific transactivation effects
Kaci, Alba; Solheim, Marie Holm; Silgjerd, Trine; Hjaltadottir, Jorunn; Hornnes, Lorentze Hope; Molnes, Janne; Madsen, Andre Greger; Sjøholt, Gry; Bellanne-Chantelot, Christine; Caswell, Richard; Sagen, Jørn Vegard; Njølstad, Pål Rasmus; Aukrust, Ingvild; Bjørkhaug, Lise (Journal article; Peer reviewed, 2024)Hepatocyte nuclear factor-4 alpha (HNF-4A) regulates genes with roles in glucose metabolism and β-cell development. Although pathogenic HNF4A variants are commonly associated with maturity-onset diabetes of the young (MODY1; ... -
Functional evaluation of 16 SCHAD missense variants: Only amino acid substitutions causing congenital hyperinsulinism of infancy lead to loss-of-function phenotypes in vitro
Velasco Pinto, Kelly; St-Louis, Johanna; Hovland, Henrikke N.; Thompson, Nels; Ottesen, Åsta; Choi, Man Hung; Pedersen, Line; Njølstad, Pål Rasmus; Arnesen, Thomas; Fjeld, Karianne; Aukrust, Ingvild; Myklebust, Line Merethe; Molven, Anders (Journal article; Peer reviewed, 2021)Short‐chain 3‐hydroxyacyl‐CoA dehydrogenase (SCHAD), encoded by the HADH gene, is a ubiquitously expressed mitochondrial enzyme involved in fatty acid oxidation. This protein also plays a role in insulin secretion as ... -
Genetic Dominant Variants in STUB1, Segregating in Families with SCA48, Display In Vitro Functional Impairments Indistinctive from Recessive Variants Associated with SCAR16
Pakdaman, Yasaman; Berland, Siren; Bustad, Helene J.; Erdal, Sigrid; Thompson, Bryony A.; James, Paul A.; Power, Kjersti; Ellingsen, Ståle; Krooni, Martin; Berge, Line Iden; Sexton, Adrienne; Bindoff, Laurence Albert; Knappskog, Per Morten; Johansson, Stefan; Aukrust, Ingvild (Journal article; Peer reviewed, 2021)Variants in STUB1 cause both autosomal recessive (SCAR16) and dominant (SCA48) spinocerebellar ataxia. Reports from 18 STUB1 variants causing SCA48 show that the clinical picture includes later-onset ataxia with a cerebellar ... -
In vitro characterization of six STUB1 variants in spinocerebellar ataxia 16 reveals altered structural properties for the encoded CHIP proteins
Pakdaman, Yasaman; Sanchez Guixe, Monica; Kleppe, Rune; Erdal, Sigrid; Bustad, Helene J.; Bjørkhaug, Lise; Haugarvoll, Kristoffer; Tzoulis, Charalampos; Heimdal, Ketil Riddervold; Knappskog, Per; Johansson, Stefan; Aukrust, Ingvild (Peer reviewed; Journal article, 2017)Spinocerebellar ataxia, autosomal recessive 16 (SCAR16) is caused by biallelic mutations in the STIP1 homology and U-box containing protein 1 (STUB1) gene encoding the ubiquitin E3 ligase and dimeric co-chaperone C-terminus ... -
NAA10 dysfunction with normal NatA-complex activity in a girl with non-syndromic ID and a de novo NAA10 p.(V111G) variant - a case report
Mc Tiernan, Nina; Støve, Svein Isungset; Aukrust, Ingvild; Mårli, Marita Torrissen; Myklebust, Line Merethe; Houge, Gunnar; Arnesen, Thomas (Peer reviewed; Journal article, 2018)Background: The NAA10-NAA15 (NatA) protein complex is an N-terminal acetyltransferase responsible for acetylating ~ 40% of eukaryotic proteins. In recent years, NAA10 variants have been found in patients with an X-linked ... -
A novel splice-affecting HNF1A variant with large population impact on diabetes in Greenland
Thuesen, Anne Cathrine; Stæger, Fredrik Filip; Kaci, Alba; Solheim, Marie Holm; Aukrust, Ingvild; Jørsboe, Emil; Santander, Cindy G.; Andersen, Mette; Li, Zilong; Gilly, Arthur; Stinson, Sara Elizabeth; Gjesing, Anette Prior; Bjerregaard, Peter; Pedersen, Michael Lynge; Larsen, Christina Viskum Lytken; Grarup, Niels; Jørgensen, Marit E.; Zeggini, Eleftheria; Bjørkhaug, Lise; Njølstad, Pål Rasmus; Albrechtsen, Anders; Moltke, Ida; Hansen, Torben (Journal article; Peer reviewed, 2023)Background: The genetic disease architecture of Inuit includes a large number of common high-impact variants. Identification of such variants contributes to our understanding of the genetic aetiology of diseases and improves ... -
Post-translational modifications of Annexin A2 are linked to its association with perinuclear nonpolysomal mRNP complexes
Aukrust, Ingvild; Rosenberg, Linn Andersen; Ankerud, Mia Madeleine; Bertelsen, Vibeke; Hollås, Hanne; Saraste, Jaakko; Grindheim, Ann Kari; Vedeler, Anni (Peer reviewed; Journal article, 2017-02)Various post-translational modifications (PTMs) regulate the localisation and function of the multifunctional protein Annexin A2 (AnxA2). In addition to its various tasks as a cytoskeletal- and membrane-associated protein, ... -
Structural and biophysical characterization of transcription factor HNF-1A as a tool to study MODY3 diabetes variants
Kind, Laura; Raasakka, Arne; Molnes, Janne; Aukrust, Ingvild; Bjørkhaug, Lise; Njølstad, Pål Rasmus; Kursula, Petri; Arnesen, Thomas (Journal article; Peer reviewed, 2022)Hepatocyte nuclear factor 1A (HNF-1A) is a transcription factor expressed in several embryonic and adult tissues, modulating the expression of numerous target genes. Pathogenic variants in the HNF1A gene are known to cause ... -
STUB1 mutations in autosomal recessive ataxias - evidence for mutation-specific clinical heterogeneity
Heimdal, Ketil; Sanchez-Guixé, Monica; Aukrust, Ingvild; Bollerslev, Jens; Bruland, Ove; Jablonski, Greg Eigner; Erichsen, Anne Kjersti; Gude, Einar; Koht, Jeanette A.; Erdal, Sigrid; Fiskerstrand, Torunn; Haukanes, Bjørn Ivar; Boman, Helge; Bjørkhaug, Lise; Tallaksen, Chantal M. E.; Knappskog, Per; Johansson, Stefan (Peer reviewed; Journal article, 2014-09-26)Background: A subset of hereditary cerebellar ataxias is inherited as autosomal recessive traits (ARCAs). Classification of recessive ataxias due to phenotypic differences in the cerebellum and cerebellar structures is ... -
Unsupervised clustering of missense variants in HNF1A using multidimensional functional data aids clinical interpretation
Althari, Sara; Najmi, Laeya Abdoli; Bennett, Amanda J.; Aukrust, Ingvild; Rundle, Jana K.; Colclough, Kevin; Molnes, Janne; Kaci, Alba; Nawaz, Sameena; van der Lugt, Timme; Hassanali, Neelam; Mahajan, Anubha; Molven, Anders; Ellard, Sian; McCarthy, Mark I.; Bjørkhaug, Lise; Njølstad, Pål Rasmus; Gloyn, Anna L. (Journal article; Peer reviewed, 2020-10-01)Exome sequencing in diabetes presents a diagnostic challenge because depending on frequency, functional impact, and genomic and environmental contexts, HNF1A variants can cause maturity-onset diabetes of the young (MODY), ...