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19 results on '"Merritt, J.L."'

3. Delineating the molecular and phenotypic spectrum of the SETD1B-related syndrome

Author

Weerts, M.J.A., Lanko, K., Guzmán-Vega, F.J., Jackson, A., Ramakrishnan, R., Cardona-Londoño, K.J., Peña-Guerra, K.A., Bever, Y. Van, Paassen, B.W. van, Kievit, A., Slegtenhorst, M. van, Allen, N.M., Kehoe, C.M., Robinson, H.K., Pang, L., Banu, S.H., Zaman, M., Efthymiou, S., Houlden, H., Järvelä, I., Lauronen, L., Määttä, T., Schrauwen, I., Leal, S.M., Ruivenkamp, C.A.L., Barge-Schaapveld, D., Peeters-Scholte, C., Galehdari, H., Mazaheri, N., Sisodiya, S.M., Harrison, V., Sun, A., Thies, J., Pedroza, L.A., Lara-Taranchenko, Y., Chinn, I.K., Lupski, J.R., Garza-Flores, A., McGlothlin, J., Yang, L., Huang, S., Wang, X, Jewett, T., Rosso, G., Lin, X., Mohammed, S, Merritt, J.L., 2nd, Mirzaa, G.M., Timms, A.E., Scheck, J., Elting, M.W., Polstra, A.M., Schenck, L., Ruzhnikov, M.R.Z., Vetro, A., Montomoli, M., Guerrini, R., Koboldt, D.C., Mosher, T.M., Pastore, M.T., McBride, K.L., Peng, J., Pan, Z., Willemsen, M.H., Koning, S. de, Turnpenny, P.D., Vries, B.B. de, Gilissen, C., Pfundt, R.P., Lees, M., Braddock, S.R., Klemp, K.C., Vansenne, F., Gijn, M.E. van, Quindipan, C., Deardorff, M.A., Hamm, J.A., Putnam, A.M., Baud, R., Walsh, L., Lynch, S.A., Baptista, J., Person, R.E., Monaghan, K.G., Crunk, A., Keller-Ramey, J., Reich, A., Elloumi, H.Z., Alders, M., Kerkhof, J., McConkey, H., Haghshenas, S., Maroofian, R., Sadikovic, B., Banka, S., Arold, Stefan T., Barakat, T.S., Weerts, M.J.A., Lanko, K., Guzmán-Vega, F.J., Jackson, A., Ramakrishnan, R., Cardona-Londoño, K.J., Peña-Guerra, K.A., Bever, Y. Van, Paassen, B.W. van, Kievit, A., Slegtenhorst, M. van, Allen, N.M., Kehoe, C.M., Robinson, H.K., Pang, L., Banu, S.H., Zaman, M., Efthymiou, S., Houlden, H., Järvelä, I., Lauronen, L., Määttä, T., Schrauwen, I., Leal, S.M., Ruivenkamp, C.A.L., Barge-Schaapveld, D., Peeters-Scholte, C., Galehdari, H., Mazaheri, N., Sisodiya, S.M., Harrison, V., Sun, A., Thies, J., Pedroza, L.A., Lara-Taranchenko, Y., Chinn, I.K., Lupski, J.R., Garza-Flores, A., McGlothlin, J., Yang, L., Huang, S., Wang, X, Jewett, T., Rosso, G., Lin, X., Mohammed, S, Merritt, J.L., 2nd, Mirzaa, G.M., Timms, A.E., Scheck, J., Elting, M.W., Polstra, A.M., Schenck, L., Ruzhnikov, M.R.Z., Vetro, A., Montomoli, M., Guerrini, R., Koboldt, D.C., Mosher, T.M., Pastore, M.T., McBride, K.L., Peng, J., Pan, Z., Willemsen, M.H., Koning, S. de, Turnpenny, P.D., Vries, B.B. de, Gilissen, C., Pfundt, R.P., Lees, M., Braddock, S.R., Klemp, K.C., Vansenne, F., Gijn, M.E. van, Quindipan, C., Deardorff, M.A., Hamm, J.A., Putnam, A.M., Baud, R., Walsh, L., Lynch, S.A., Baptista, J., Person, R.E., Monaghan, K.G., Crunk, A., Keller-Ramey, J., Reich, A., Elloumi, H.Z., Alders, M., Kerkhof, J., McConkey, H., Haghshenas, S., Maroofian, R., Sadikovic, B., Banka, S., Arold, Stefan T., and Barakat, T.S.

Abstract

Contains fulltext : 243955.pdf (Publisher’s version ) (Open Access), PURPOSE: Pathogenic variants in SETD1B have been associated with a syndromic neurodevelopmental disorder including intellectual disability, language delay, and seizures. To date, clinical features have been described for 11 patients with (likely) pathogenic SETD1B sequence variants. This study aims to further delineate the spectrum of the SETD1B-related syndrome based on characterizing an expanded patient cohort. METHODS: We perform an in-depth clinical characterization of a cohort of 36 unpublished individuals with SETD1B sequence variants, describing their molecular and phenotypic spectrum. Selected variants were functionally tested using in vitro and genome-wide methylation assays. RESULTS: Our data present evidence for a loss-of-function mechanism of SETD1B variants, resulting in a core clinical phenotype of global developmental delay, language delay including regression, intellectual disability, autism and other behavioral issues, and variable epilepsy phenotypes. Developmental delay appeared to precede seizure onset, suggesting SETD1B dysfunction impacts physiological neurodevelopment even in the absence of epileptic activity. Males are significantly overrepresented and more severely affected, and we speculate that sex-linked traits could affect susceptibility to penetrance and the clinical spectrum of SETD1B variants. CONCLUSION: Insights from this extensive cohort will facilitate the counseling regarding the molecular and phenotypic landscape of newly diagnosed patients with the SETD1B-related syndrome.

Published
2021

4. Long-term effects of medical management on growth and weight in individuals with urea cycle disorders

Author

Posset, R. (Roland), Garbade, S.F. (Sven), Gleich, F. (Florian), Gropman, A.L. (Andrea L.), Lonlay, P. (Pascale) de, Hoffmann, G.F. (Georg), Garcia-Cazorla, A. (Angeles), Nagamani, S.C.S. (Sandesh C. S.), Baumgartner, M.R. (Matthias), Schulze, A. (Andreas), Dobbelaere, D. (Dries), Yudkoff, M. (Marc), Kölker, S. (Stefan), Zielonka, M. (Matthias), Ah Mew, N. (Nicholas), Berry, S.A. (Susan A.), McCandless, S.E. (Shawn E.), Coughlin, C. (Curtis), Enns, G. (Gregory), Gallagher, R.C. (Renata C.), Burrage, L.C. (Lindsay C.), Seminara, J. (Jennifer), Harding, C.O. (Cary O.), Burgard, P. (Peter), Le Mons, C. (Cynthia), Merritt, J.L. (J. Lawrence), Stricker, T. (Tamar), Bedoyan, J. (Jirair), Berry, G.T. (Gerard T.), Diaz, G.A. (George A.), Wong, D. (Derek), Tuchman, M. (Mendel), Waisbren, S. (Susan), Weisfeld-Adams, J.D. (James D), Burlina, A.B. (Alberto), Leão Teles, E. (Elisa), Pedrón-Giner, C. (Consuelo), Lund, A.M. (Allan M.), Dionisi-Vici, C. (Carlo), Williams, M. (Monique), Mütze, U. (Ulrike), Karall, D. (Daniela), Blasco-Alonso, J. (Javier), Couce, M.L. (Maria L.), Sykut-Cegielska, J. (Jolanta), Augoustides-Savvopoulou, P. (Persa), Ruiz Gomez, A. (Angeles), Barić, I. (Ivo), Schiff, M. (Manuel), Chien, Y.-H. (Yin-Hsiu), Lindner, M. (Martin), Chabrol, B. (Brigitte), Skouma, A. (Anastasia), Zeman, J. (Jiri), Sokal, E. (Etienne), Santer, R. (Rene), Eyskens, F. (François), Freisinger, P. (Peter), Peña-Quintana, L. (Luis), Roland, D. (Dominique), Cortès-Saladelafont, E. (Elisenda), Djordjevic, M. (Maja), Posset, R. (Roland), Garbade, S.F. (Sven), Gleich, F. (Florian), Gropman, A.L. (Andrea L.), Lonlay, P. (Pascale) de, Hoffmann, G.F. (Georg), Garcia-Cazorla, A. (Angeles), Nagamani, S.C.S. (Sandesh C. S.), Baumgartner, M.R. (Matthias), Schulze, A. (Andreas), Dobbelaere, D. (Dries), Yudkoff, M. (Marc), Kölker, S. (Stefan), Zielonka, M. (Matthias), Ah Mew, N. (Nicholas), Berry, S.A. (Susan A.), McCandless, S.E. (Shawn E.), Coughlin, C. (Curtis), Enns, G. (Gregory), Gallagher, R.C. (Renata C.), Burrage, L.C. (Lindsay C.), Seminara, J. (Jennifer), Harding, C.O. (Cary O.), Burgard, P. (Peter), Le Mons, C. (Cynthia), Merritt, J.L. (J. Lawrence), Stricker, T. (Tamar), Bedoyan, J. (Jirair), Berry, G.T. (Gerard T.), Diaz, G.A. (George A.), Wong, D. (Derek), Tuchman, M. (Mendel), Waisbren, S. (Susan), Weisfeld-Adams, J.D. (James D), Burlina, A.B. (Alberto), Leão Teles, E. (Elisa), Pedrón-Giner, C. (Consuelo), Lund, A.M. (Allan M.), Dionisi-Vici, C. (Carlo), Williams, M. (Monique), Mütze, U. (Ulrike), Karall, D. (Daniela), Blasco-Alonso, J. (Javier), Couce, M.L. (Maria L.), Sykut-Cegielska, J. (Jolanta), Augoustides-Savvopoulou, P. (Persa), Ruiz Gomez, A. (Angeles), Barić, I. (Ivo), Schiff, M. (Manuel), Chien, Y.-H. (Yin-Hsiu), Lindner, M. (Martin), Chabrol, B. (Brigitte), Skouma, A. (Anastasia), Zeman, J. (Jiri), Sokal, E. (Etienne), Santer, R. (Rene), Eyskens, F. (François), Freisinger, P. (Peter), Peña-Quintana, L. (Luis), Roland, D. (Dominique), Cortès-Saladelafont, E. (Elisenda), and Djordjevic, M. (Maja)

Abstract

Low protein diet and sodium or glycerol phenylbutyrate, two pillars of recommended long-term therapy of individuals with urea cycle disorders (UCDs), involve the risk of iatrogenic growth failure. Limited evidence-based studies hamper our knowledge on the long-term effects of the proposed medical management in individuals with UCDs. We studied the impact of medical management on growth and weight development in 307 individuals longitudinally followed by the Urea Cycle Disorders Consortium (UCDC) and the European registry and network for Intoxication type Metabolic Diseases (E-IMD). Intrauterine growth of all investigated UCDs and postnatal linear growth of asymptomatic individuals remained unaffected. Symptomatic individuals were at risk of progressive growth retardation independent from the underlying disease and the degree of natural protein restriction. Growth impairment was determined by disease severity and associated with reduced or borderline plasma branched-chain amino acid (BCAA) concentrations. Liver transplantation appeared to have a beneficial effect on growth. Weight development remained unaffected both in asymptomatic and symptomatic individuals. Progressive growth impairment depends on disease severity and plasma BCAA concentrations, but cannot be predicted by the amount of natural protein intake alone. Future clinical trials are necessary to evaluate whether supplementation with BCAAs might improve growth in UCDs.

Published
2020
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11. Urinary phenylacetylglutamine as dosing biomarker for patients with urea cycle disorders

Author

Mokhtarani, M., primary, Diaz, G.A., additional, Rhead, W., additional, Lichter-Konecki, U., additional, Bartley, J., additional, Feigenbaum, A., additional, Longo, N., additional, Berquist, W., additional, Berry, S.A., additional, Gallagher, R., additional, Bartholomew, D., additional, Harding, C.O., additional, Korson, M.S., additional, McCandless, S.E., additional, Smith, W., additional, Vockley, J., additional, Bart, S., additional, Kronn, D., additional, Zori, R., additional, Cederbaum, S., additional, Dorrani, N., additional, Merritt, J.L., additional, Sreenath-Nagamani, Sandesh, additional, Summar, M., additional, LeMons, C., additional, Dickinson, K., additional, Coakley, D.F., additional, Moors, T.L., additional, Lee, B., additional, and Scharschmidt, B.F., additional

Published
2012
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12. Ammonia control in children with urea cycle disorders (UCDs); Phase 2 comparison of sodium phenylbutyrate and glycerol phenylbutyrate

Author

Lichter-Konecki, Uta, primary, Diaz, G.A., additional, Merritt, J.L., additional, Feigenbaum, A., additional, Jomphe, C., additional, Marier, J.F., additional, Beliveau, M., additional, Mauney, J., additional, Dickinson, K., additional, Martinez, A., additional, Mokhtarani, M., additional, Scharschmidt, B., additional, and Rhead, W., additional

Published
2011
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13. Risk-based water management: practical application for serious management.

Author

Macintosh J.C., Water in mining 2003 Brisbane, Australia 13-Oct-0315-Oct-03, Merritt J.L., Macintosh J.C., Water in mining 2003 Brisbane, Australia 13-Oct-0315-Oct-03, and Merritt J.L.

Abstract

The application is described of continuous operational simulation (OPSIM) modelling techniques to establish appropriate risk profiles for mine-site operations. The techniques are based on the assumption that long-term records of the climate contain within them sets of sequences that are representative of what can be expected in the future (droughts, floods, cyclones, good years and bad, long or short and everything in between). If the historical records are run through an OPSIM model for a particular site, the simulated operational characteristics can be taken as being representative of what can be expected in the future, in the long term. This lends itself to statistical analysis and translation into the required risk-based format. A case study is presented for the German Creek coal mine in central Queensland. Results from the modelling were used to provide mine management with risk-based guidelines for both securing and containing mine water inventories. The OPSIM model is also used to produce lead-time estimates to defined levels of confidence., The application is described of continuous operational simulation (OPSIM) modelling techniques to establish appropriate risk profiles for mine-site operations. The techniques are based on the assumption that long-term records of the climate contain within them sets of sequences that are representative of what can be expected in the future (droughts, floods, cyclones, good years and bad, long or short and everything in between). If the historical records are run through an OPSIM model for a particular site, the simulated operational characteristics can be taken as being representative of what can be expected in the future, in the long term. This lends itself to statistical analysis and translation into the required risk-based format. A case study is presented for the German Creek coal mine in central Queensland. Results from the modelling were used to provide mine management with risk-based guidelines for both securing and containing mine water inventories. The OPSIM model is also used to produce lead-time estimates to defined levels of confidence.

Published
2003

16. Seismic design of underground structures.

Author

Merritt J.L., Rapid excavation and tunnelling conference New York 16-Jun-8520-Jun-85, Hendron A.J., Monsees J.E., Merritt J.L., Rapid excavation and tunnelling conference New York 16-Jun-8520-Jun-85, Hendron A.J., and Monsees J.E.

Published
1985

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