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2. Epigenotype–genotype–phenotype correlations in SETD1A and SETD2 chromatin disorders

Author

Lee, Sunwoo, primary, Menzies, Lara, additional, Hay, Eleanor, additional, Ochoa, Eguzkine, additional, Docquier, France, additional, Rodger, Fay, additional, Deshpande, Charu, additional, Foulds, Nicola C, additional, Jacquemont, Sébastien, additional, Jizi, Khadije, additional, Kiep, Henriette, additional, Kraus, Alison, additional, Löhner, Katharina, additional, Morrison, Patrick J, additional, Popp, Bernt, additional, Richardson, Ruth, additional, van Haeringen, Arie, additional, Martin, Ezequiel, additional, Toribio, Ana, additional, Li, Fudong, additional, Jones, Wendy D, additional, Sansbury, Francis H, additional, and Maher, Eamonn R, additional

Published
2023
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3. Epigenotype-genotype-phenotype correlations in SETD1A and SETD2 chromatin disorders

Author

Lee, Sunwoo, Menzies, Lara, Hay, Eleanor, Ochoa, Eguzkine, Docquier, France, Rodger, Fay, Deshpande, Charu, Foulds, Nicola C., Jacquemont, Sébastien, Jizi, Khadije, Kiep, Henriette, Kraus, Alison, Löhner, Katharina, Morrison, Patrick J., Popp, Bernt, Richardson, Ruth, van Haeringen, Arie, Martin, Ezequiel, Toribio, Ana, Li, Fudong, Jones, Wendy D., Sansbury, Francis H., Maher, Eamonn R., Lee, Sunwoo, Menzies, Lara, Hay, Eleanor, Ochoa, Eguzkine, Docquier, France, Rodger, Fay, Deshpande, Charu, Foulds, Nicola C., Jacquemont, Sébastien, Jizi, Khadije, Kiep, Henriette, Kraus, Alison, Löhner, Katharina, Morrison, Patrick J., Popp, Bernt, Richardson, Ruth, van Haeringen, Arie, Martin, Ezequiel, Toribio, Ana, Li, Fudong, Jones, Wendy D., Sansbury, Francis H., and Maher, Eamonn R.

Abstract

Germline pathogenic variants in two genes encoding the lysine-specific histone methyltransferase genes SETD1A and SETD2 are associated with neurodevelopmental disorders (NDDs) characterized by developmental delay and congenital anomalies. The SETD1A and SETD2 gene products play a critical role in chromatin-mediated regulation of gene expression. Specific methylation episignatures have been detected for a range of chromatin gene-related NDDs and have impacted clinical practice by improving the interpretation of variant pathogenicity. To investigate if SETD1A and/or SETD2-related NDDs are associated with a detectable episignature, we undertook targeted genome-wide methylation profiling of > 2 M CpGs using a next-generation sequencing-based assay. A comparison of methylation profiles in patients with SETD1A variants (n = 6) did not reveal evidence of a strong methylation episignature. A review of the clinical and genetic features of the SETD2 patient group revealed that, as reported previously, there were phenotypic differences between patients with truncating mutations (n = 4, Luscan-Lumish syndrome; MIM:616831) and those with missense codon 1740 variants [p.Arg1740Trp (n = 4) and p.Arg1740Gln (n = 2)]. Both SETD2 subgroups demonstrated a methylation episignature, which was characterized by hypomethylation and hypermethylation events, respectively. Within the codon 1740 subgroup, both the methylation changes and clinical phenotype were more severe in those with p.Arg1740Trp variants. We also noted that two of 10 cases with a SETD2-NDD had developed a neoplasm. These findings reveal novel epigenotype-genotype-phenotype correlations in SETD2-NDDs and predict a gain-of-function mechanism for SETD2 codon 1740 pathogenic variants.

Published
2023

5. Further delineation of the clinical spectrum of White–Sutton syndrome: 12 new individuals and a review of the literature

Author

Murch, Oliver, primary, Jain, Vani, additional, Benneche, Andreas, additional, Metcalfe, Kay, additional, Hobson, Emma, additional, Prescott, Katrina, additional, Chandler, Kate, additional, Ghali, Neeti, additional, Carmichael, Jenny, additional, Foulds, Nicola C., additional, Paulsen, Julie, additional, Smeland, Marie F., additional, Berland, Siren, additional, and Fry, Andrew E., additional

Published
2021
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7. Genotype–phenotype correlation at codon 1740 ofSETD2

Author

Rabin, Rachel, primary, Radmanesh, Alireza, additional, Glass, Ian A., additional, Dobyns, William B., additional, Aldinger, Kimberly A., additional, Shieh, Joseph T., additional, Romoser, Shelby, additional, Bombei, Hannah, additional, Dowsett, Leah, additional, Trapane, Pamela, additional, Bernat, John A., additional, Baker, Janice, additional, Mendelsohn, Nancy J., additional, Popp, Bernt, additional, Siekmeyer, Manuela, additional, Sorge, Ina, additional, Sansbury, Francis Hugh, additional, Watts, Patrick, additional, Foulds, Nicola C., additional, Burton, Jennifer, additional, Hoganson, George, additional, Hurst, Jane A., additional, Menzies, Lara, additional, Osio, Deborah, additional, Kerecuk, Larissa, additional, Cobben, Jan M., additional, Jizi, Khadijé, additional, Jacquemont, Sebastien, additional, Bélanger, Stacey A., additional, Löhner, Katharina, additional, Veenstra‐Knol, Hermine E., additional, Lemmink, Henny H., additional, Keller‐Ramey, Jennifer, additional, Wentzensen, Ingrid M., additional, Punj, Sumit, additional, McWalter, Kirsty, additional, Lenberg, Jerica, additional, Ellsworth, Katarzyna A., additional, Radtke, Kelly, additional, Akbarian, Schahram, additional, and Pappas, John, additional

Published
2020
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8. Congenital Titinopathy: Comprehensive characterization and pathogenic insights

Author

Oates, Emily C., Jones, Kristi J., Donkervoort, Sandra, Charlton, Amanda, Brammah, Susan, Smith, John E., Ware, James S., Yau, Kyle S., Swanson, Lindsay C., Whiffin, Nicola, Peduto, Anthony J., Bournazos, Adam, Waddell, Leigh B., Farrar, Michelle A., Sampaio, Hugo A., Teoh, Hooi Ling, Lamont, Phillipa J., Mowat, David, Fitzsimons, Robin B., Corbett, Alastair J., Ryan, Monique M., O'Grady, Gina L., Sandaradura, Sarah A., Ghaoui, Roula, Joshi, Himanshu, Marshall, Jamie L., Nolan, Melinda A., Kaur, Simranpreet, Punetha, Jaya, Töpf, Ana, Harris, Elizabeth, Bakshi, Madhura, Genetti, Casie A., Marttila, Minttu, Werlauff, Ulla, Streichenberger, Nathalie, Pestronk, Alan, Mazanti, Ingrid, Pinner, Jason R., Vuillerot, Carole, Grosmann, Carla, Camacho, Ana, Mohassel, Payam, Leach, Meganne E., Foley, A. Reghan, Bharucha-Goebel, Diana, Collins, James, Connolly, Anne M., Gilbreath, Heather R., Iannaccone, Susan T., Castro, Diana, Cummings, Beryl B., Webster, Richard I., Lazaro, Leïla, Vissing, John, Coppens, Sandra, Deconinck, Nicolas, Luk, Ho Ming, Thomas, Neil H., Foulds, Nicola C., Illingworth, Marjorie A., Ellard, Sian, McLean, Catriona A., Phadke, Rahul, Ravenscroft, Gianina, Witting, Nanna, Hackman, Peter, Richard, Isabelle, Cooper, Sandra T., Kamsteeg, Erik Jan, Hoffman, Eric P., Bushby, Kate, Straub, Volker, Udd, Bjarne, Ferreiro, Ana, North, Kathryn N., Clarke, Nigel F., Lek, Monkol, Beggs, Alan H., Bönnemann, Carsten G., MacArthur, Daniel G., Granzier, Henk, Davis, Mark R., and Laing, Nigel G.

Subjects
Sensory disorders Donders Center for Medical Neuroscience [Radboudumc 12]
Abstract

Contains fulltext : 196367.pdf (Publisher’s version ) (Open Access) OBJECTIVE: Comprehensive clinical characterization of congenital titinopathy to facilitate diagnosis and management of this important emerging disorder. METHODS: Using massively parallel sequencing we identified 30 patients from 27 families with 2 pathogenic nonsense, frameshift and/or splice site TTN mutations in trans. We then undertook a detailed analysis of the clinical, histopathological and imaging features of these patients. RESULTS: All patients had prenatal or early onset hypotonia and/or congenital contractures. None had ophthalmoplegia. Scoliosis and respiratory insufficiency typically developed early and progressed rapidly, whereas limb weakness was often slowly progressive, and usually did not prevent independent walking. Cardiac involvement was present in 46% of patients. Relatives of 2 patients had dilated cardiomyopathy. Creatine kinase levels were normal to moderately elevated. Increased fiber size variation, internalized nuclei and cores were common histopathological abnormalities. Cap-like regions, whorled or ring fibers, and mitochondrial accumulations were also observed. Muscle magnetic resonance imaging showed gluteal, hamstring and calf muscle involvement. Western blot analysis showed a near-normal sized titin protein in all samples. The presence of 2 mutations predicted to impact both N2BA and N2B cardiac isoforms appeared to be associated with greatest risk of cardiac involvement. One-third of patients had 1 mutation predicted to impact exons present in fetal skeletal muscle, but not included within the mature skeletal muscle isoform transcript. This strongly suggests developmental isoforms are involved in the pathogenesis of this congenital/early onset disorder. INTERPRETATION: This detailed clinical reference dataset will greatly facilitate diagnostic confirmation and management of patients, and has provided important insights into disease pathogenesis. Ann Neurol 2018;83:1105-1124.

Published
2018

9. Congenital Titinopathy:Comprehensive characterization and pathogenic insights

Author

Oates, Emily C., Jones, Kristi J., Donkervoort, Sandra, Charlton, Amanda, Brammah, Susan, Smith, John E., Ware, James S., Yau, Kyle S., Swanson, Lindsay C., Whiffin, Nicola, Peduto, Anthony J., Bournazos, Adam, Waddell, Leigh B., Farrar, Michelle A., Sampaio, Hugo A., Teoh, Hooi Ling, Lamont, Phillipa J., Mowat, David, Fitzsimons, Robin B., Corbett, Alastair J., Ryan, Monique M., O'Grady, Gina L., Sandaradura, Sarah A., Ghaoui, Roula, Joshi, Himanshu, Marshall, Jamie L., Nolan, Melinda A., Kaur, Simranpreet, Punetha, Jaya, Töpf, Ana, Harris, Elizabeth, Bakshi, Madhura, Genetti, Casie A., Marttila, Minttu, Werlauff, Ulla, Streichenberger, Nathalie, Pestronk, Alan, Mazanti, Ingrid, Pinner, Jason R., Vuillerot, Carole, Grosmann, Carla, Camacho, Ana, Mohassel, Payam, Leach, Meganne E., Foley, A. Reghan, Bharucha-Goebel, Diana, Collins, James, Connolly, Anne M., Gilbreath, Heather R., Iannaccone, Susan T., Castro, Diana, Cummings, Beryl B., Webster, Richard I., Lazaro, Leïla, Vissing, John, Coppens, Sandra, Deconinck, Nicolas, Luk, Ho Ming, Thomas, Neil H., Foulds, Nicola C., Illingworth, Marjorie A., Ellard, Sian, McLean, Catriona A., Phadke, Rahul, Ravenscroft, Gianina, Witting, Nanna, Hackman, Peter, Richard, Isabelle, Cooper, Sandra T., Kamsteeg, Erik Jan, Hoffman, Eric P., Bushby, Kate, Straub, Volker, Udd, Bjarne, Ferreiro, Ana, North, Kathryn N., Clarke, Nigel F., Lek, Monkol, Beggs, Alan H., Bönnemann, Carsten G., MacArthur, Daniel G., Granzier, Henk, Davis, Mark R., Laing, Nigel G., Oates, Emily C., Jones, Kristi J., Donkervoort, Sandra, Charlton, Amanda, Brammah, Susan, Smith, John E., Ware, James S., Yau, Kyle S., Swanson, Lindsay C., Whiffin, Nicola, Peduto, Anthony J., Bournazos, Adam, Waddell, Leigh B., Farrar, Michelle A., Sampaio, Hugo A., Teoh, Hooi Ling, Lamont, Phillipa J., Mowat, David, Fitzsimons, Robin B., Corbett, Alastair J., Ryan, Monique M., O'Grady, Gina L., Sandaradura, Sarah A., Ghaoui, Roula, Joshi, Himanshu, Marshall, Jamie L., Nolan, Melinda A., Kaur, Simranpreet, Punetha, Jaya, Töpf, Ana, Harris, Elizabeth, Bakshi, Madhura, Genetti, Casie A., Marttila, Minttu, Werlauff, Ulla, Streichenberger, Nathalie, Pestronk, Alan, Mazanti, Ingrid, Pinner, Jason R., Vuillerot, Carole, Grosmann, Carla, Camacho, Ana, Mohassel, Payam, Leach, Meganne E., Foley, A. Reghan, Bharucha-Goebel, Diana, Collins, James, Connolly, Anne M., Gilbreath, Heather R., Iannaccone, Susan T., Castro, Diana, Cummings, Beryl B., Webster, Richard I., Lazaro, Leïla, Vissing, John, Coppens, Sandra, Deconinck, Nicolas, Luk, Ho Ming, Thomas, Neil H., Foulds, Nicola C., Illingworth, Marjorie A., Ellard, Sian, McLean, Catriona A., Phadke, Rahul, Ravenscroft, Gianina, Witting, Nanna, Hackman, Peter, Richard, Isabelle, Cooper, Sandra T., Kamsteeg, Erik Jan, Hoffman, Eric P., Bushby, Kate, Straub, Volker, Udd, Bjarne, Ferreiro, Ana, North, Kathryn N., Clarke, Nigel F., Lek, Monkol, Beggs, Alan H., Bönnemann, Carsten G., MacArthur, Daniel G., Granzier, Henk, Davis, Mark R., and Laing, Nigel G.

Abstract

Objective: Comprehensive clinical characterization of congenital titinopathy to facilitate diagnosis and management of this important emerging disorder. Methods: Using massively parallel sequencing we identified 30 patients from 27 families with 2 pathogenic nonsense, frameshift and/or splice site TTN mutations in trans. We then undertook a detailed analysis of the clinical, histopathological and imaging features of these patients. Results: All patients had prenatal or early onset hypotonia and/or congenital contractures. None had ophthalmoplegia. Scoliosis and respiratory insufficiency typically developed early and progressed rapidly, whereas limb weakness was often slowly progressive, and usually did not prevent independent walking. Cardiac involvement was present in 46% of patients. Relatives of 2 patients had dilated cardiomyopathy. Creatine kinase levels were normal to moderately elevated. Increased fiber size variation, internalized nuclei and cores were common histopathological abnormalities. Cap-like regions, whorled or ring fibers, and mitochondrial accumulations were also observed. Muscle magnetic resonance imaging showed gluteal, hamstring and calf muscle involvement. Western blot analysis showed a near-normal sized titin protein in all samples. The presence of 2 mutations predicted to impact both N2BA and N2B cardiac isoforms appeared to be associated with greatest risk of cardiac involvement. One-third of patients had 1 mutation predicted to impact exons present in fetal skeletal muscle, but not included within the mature skeletal muscle isoform transcript. This strongly suggests developmental isoforms are involved in the pathogenesis of this congenital/early onset disorder. Interpretation: This detailed clinical reference dataset will greatly facilitate diagnostic confirmation and management of patients, and has provided important insights into disease pathogenesis. Ann Neurol 2018;83:1105–1124.

Published
2018

12. New NBIA subtype.

Author

Hogarth, Penelope, Gregory, Allison, Kruer, Michael C., Sanford, Lynn, Wagoner, Wendy, Natowicz, Marvin R., Egel, Robert T., Subramony, S. H., Goldman, Jennifer G., Berry-Kravis, Elizabeth, Foulds, Nicola C., Hammans, Simon R., Desguerre, Isabelle, Rodriguez, Diana, Wilson, Callum, Diedrich, Andrea, Green, Sarah, Huong Tran, Reese, Lindsay, and Wohjer, Randall L.

Published
2013
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18. Congenital Titinopathy: Comprehensive characterization and pathogenic insights.

Author

Oates EC, Jones KJ, Donkervoort S, Charlton A, Brammah S, Smith JE 3rd, Ware JS, Yau KS, Swanson LC, Whiffin N, Peduto AJ, Bournazos A, Waddell LB, Farrar MA, Sampaio HA, Teoh HL, Lamont PJ, Mowat D, Fitzsimons RB, Corbett AJ, Ryan MM, O'Grady GL, Sandaradura SA, Ghaoui R, Joshi H, Marshall JL, Nolan MA, Kaur S, Punetha J, Töpf A, Harris E, Bakshi M, Genetti CA, Marttila M, Werlauff U, Streichenberger N, Pestronk A, Mazanti I, Pinner JR, Vuillerot C, Grosmann C, Camacho A, Mohassel P, Leach ME, Foley AR, Bharucha-Goebel D, Collins J, Connolly AM, Gilbreath HR, Iannaccone ST, Castro D, Cummings BB, Webster RI, Lazaro L, Vissing J, Coppens S, Deconinck N, Luk HM, Thomas NH, Foulds NC, Illingworth MA, Ellard S, McLean CA, Phadke R, Ravenscroft G, Witting N, Hackman P, Richard I, Cooper ST, Kamsteeg EJ, Hoffman EP, Bushby K, Straub V, Udd B, Ferreiro A, North KN, Clarke NF, Lek M, Beggs AH, Bönnemann CG, MacArthur DG, Granzier H, Davis MR, and Laing NG

Subjects
Female, Humans, Male, Mutation genetics, Phenotype, Protein Isoforms genetics, Cardiomyopathy, Dilated congenital, Connectin genetics, Muscle Proteins genetics, Muscle, Skeletal pathology
Abstract

Objective: Comprehensive clinical characterization of congenital titinopathy to facilitate diagnosis and management of this important emerging disorder., Methods: Using massively parallel sequencing we identified 30 patients from 27 families with 2 pathogenic nonsense, frameshift and/or splice site TTN mutations in trans. We then undertook a detailed analysis of the clinical, histopathological and imaging features of these patients., Results: All patients had prenatal or early onset hypotonia and/or congenital contractures. None had ophthalmoplegia. Scoliosis and respiratory insufficiency typically developed early and progressed rapidly, whereas limb weakness was often slowly progressive, and usually did not prevent independent walking. Cardiac involvement was present in 46% of patients. Relatives of 2 patients had dilated cardiomyopathy. Creatine kinase levels were normal to moderately elevated. Increased fiber size variation, internalized nuclei and cores were common histopathological abnormalities. Cap-like regions, whorled or ring fibers, and mitochondrial accumulations were also observed. Muscle magnetic resonance imaging showed gluteal, hamstring and calf muscle involvement. Western blot analysis showed a near-normal sized titin protein in all samples. The presence of 2 mutations predicted to impact both N2BA and N2B cardiac isoforms appeared to be associated with greatest risk of cardiac involvement. One-third of patients had 1 mutation predicted to impact exons present in fetal skeletal muscle, but not included within the mature skeletal muscle isoform transcript. This strongly suggests developmental isoforms are involved in the pathogenesis of this congenital/early onset disorder., Interpretation: This detailed clinical reference dataset will greatly facilitate diagnostic confirmation and management of patients, and has provided important insights into disease pathogenesis. Ann Neurol 2018;83:1105-1124., (© 2018 American Neurological Association.)

Published
2018
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19. Synthesis, characterization, and evaluation of ferrocene-theophylline conjugates for use in electrochemical enzyme immunoassay.

Author

Forrow NJ, Foulds NC, Frew JE, and Law JT

Subjects
Acetylation, Antibodies chemistry, Antibodies immunology, Calibration, Catalysis, Electrochemistry, Glucose Oxidase chemistry, Immunoenzyme Techniques, Indicators and Reagents, Magnetic Resonance Spectroscopy, Metallocenes, Ferrous Compounds chemistry, Theophylline chemistry
Abstract

A series of 8-(ferrocenylalkyl)theophylline conjugates were synthesized for evaluation in a homogeneous, competitive electrochemical immunoassay for theophylline with amperometric detection of the ferrocene label at +320 mV. The electrical signal was amplified via redox cycling with the glucose oxidase/glucose system. The resulting catalytic current was strongly inhibited upon binding of the conjugates to anti-theophylline antibodies such that a large excess of theophylline was required to achieve complete reversal leading to an assay with poor sensitivity in the clinical range. A study of the nonspecific interaction of the antibodies with various ferrocene derivatives indicated that this was reduced when a charged functional group was present on the metallocene ring. Consequently, a conjugate was synthesized with a quaternary ammonium group which when incorporated into the assay resulted in improved sensitivity.

Published
2004
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