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1. Multimodal phenotyping of foveal hypoplasia in albinism and albino-like conditions: a pediatric case series with adaptive optics insights

Author

Bacci, Giacomo M., Marziali, Elisa, Bargiacchi, Sara, Paques, Michel, Virgili, Gianni, Fortunato, Pina, Durand, Marine, Rocca, Camilla, Pagliazzi, Angelica, Palazzo, Viviana, Tiberi, Lucia, Vergani, Debora, Landini, Samuela, Peron, Angela, Artuso, Rosangela, Pacini, Bianca, Stabile, Monica, Sodi, Andrea, and Caputo, Roberto

Published
2024
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2. A multidisciplinary approach to inherited retinal dystrophies from diagnosis to initial care: a narrative review with inputs from clinical practice

Author

Murro, Vittoria, Banfi, Sandro, Testa, Francesco, Iarossi, Giancarlo, Falsini, Benedetto, Sodi, Andrea, Signorini, Sabrina, Iolascon, Achille, Russo, Roberta, Mucciolo, Dario Pasquale, Caputo, Roberto, Bacci, Giacomo Maria, Bargiacchi, Sara, Turco, Simona, Fortini, Stefania, and Simonelli, Francesca

Published
2023
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3. Broadening the ocular phenotypic spectrum of ultra-rare BRPF1 variants: report of two cases.

Author

Marziali, Elisa, Landini, Samuela, Fiorentini, Erika, Rocca, Camilla, Tiberi, Lucia, Artuso, Rosangela, Zaroili, Laila, Dirupo, Elia, Fortunato, Pina, Bargiacchi, Sara, Caputo, Roberto, and Bacci, Giacomo Maria

Subjects
OPTICAL coherence tomography, ARNOLD-Chiari deformity, GENETIC variation, DISABILITIES, OPTIC nerve
Abstract

Introduction: BRPF1 gene on 3p26-p25 encodes a protein involved in epigenetic regulation, through interaction with histone H3 lysine acetyltransferases KAT6A and KAT6B of the MYST family. Heterozygous pathogenic variants in BRPF1 gene are associated with Intellectual Developmental Disorder with Dysmorphic Facies and Ptosis (IDDDFP), characterized by global developmental delay, intellectual disability, language delay, and dysmorphic facial features. The reported ocular involvement includes strabismus, amblyopia, and refraction errors. This report describes a novel ocular finding in patients affected by variants in the BRPF1 gene. Methods: We performed exome sequencing and deep ocular phenotyping in two unrelated patients (P1, P2) with mild intellectual disability, ptosis, and typical facies. Results: Interestingly, P1 had a Chiari Malformation type I and a subclinical optic neuropathy, which could not be explained by variations in other genes. Having detected a peculiar ocular phenotype in P1, we suggested optical coherence tomography (OCT) for P2; such an exam also detected bilateral subclinical optic neuropathy in this case. Discussion: To date, only a few patients with BRPF1 variants have been described, and none were reported to have optic neuropathy. Since subclinical optic nerve alterations can go easily undetected, our experience highlights the importance of a more detailed ophthalmologic evaluation in patients with BRPF1 variant. [ABSTRACT FROM AUTHOR]

Published
2024
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4. Chiari 1 malformation and exome sequencing in 51 trios: the emerging role of rare missense variants in chromatin-remodeling genes

Author

Provenzano, Aldesia, La Barbera, Andrea, Scagnet, Mirko, Pagliazzi, Angelica, Traficante, Giovanna, Pantaleo, Marilena, Tiberi, Lucia, Vergani, Debora, Kurtas, Nehir Edibe, Guarducci, Silvia, Bargiacchi, Sara, Forzano, Giulia, Artuso, Rosangela, Palazzo, Viviana, Kura, Ada, Giordano, Flavio, di Feo, Daniele, Mortilla, Marzia, De Filippi, Claudio, Mattei, Gianluca, Garavelli, Livia, Giusti, Betti, Genitori, Lorenzo, Zuffardi, Orsetta, and Giglio, Sabrina

Published
2021
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7. Optic nerve involvement in CACNA1F-related disease: observations from a multicentric case series

Author

Marziali, Elisa, primary, Van Den Broeck, Filip, additional, Bargiacchi, Sara, additional, Fortunato, Pina, additional, Caputo, Roberto, additional, Sodi, Andrea, additional, De Zaeytijd, Julie, additional, Murro, Vittoria, additional, Mucciolo, Dario Pasquale, additional, Giorgio, Dario, additional, Passerini, Ilaria, additional, Palazzo, Viviana, additional, Peluso, Francesca, additional, de Baere, Elfride, additional, Zeitz, Christina, additional, Leroy, Bart P., additional, Secci, Jacopo, additional, and Bacci, Giacomo M., additional

Published
2022
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8. Functional correlation of genome‐wide DNA methylation profiles in genetic neurodevelopmental disorders

Author

Levy, Michael A., primary, Relator, Raissa, additional, McConkey, Haley, additional, Pranckeviciene, Erinija, additional, Kerkhof, Jennifer, additional, Barat‐Houari, Mouna, additional, Bargiacchi, Sara, additional, Biamino, Elisa, additional, Palomares Bralo, María, additional, Cappuccio, Gerarda, additional, Ciolfi, Andrea, additional, Clarke, Angus, additional, DuPont, Barbara R., additional, Elting, Mariet W., additional, Faivre, Laurence, additional, Fee, Timothy, additional, Ferilli, Marco, additional, Fletcher, Robin S., additional, Cherick, Florian, additional, Foroutan, Aidin, additional, Friez, Michael J., additional, Gervasini, Cristina, additional, Haghshenas, Sadegheh, additional, Hilton, Benjamin A., additional, Jenkins, Zandra, additional, Kaur, Simranpreet, additional, Lewis, Suzanne, additional, Louie, Raymond J., additional, Maitz, Silvia, additional, Milani, Donatella, additional, Morgan, Angela T., additional, Oegema, Renske, additional, Østergaard, Elsebet, additional, Pallares, Nathalie R., additional, Piccione, Maria, additional, Plomp, Astrid S., additional, Poulton, Cathryn, additional, Reilly, Jack, additional, Rius, Rocio, additional, Robertson, Stephen, additional, Rooney, Kathleen, additional, Rousseau, Justine, additional, Santen, Gijs W. E., additional, Santos‐Simarro, Fernando, additional, Schijns, Josephine, additional, Squeo, Gabriella M., additional, John, Miya St, additional, Thauvin‐Robinet, Christel, additional, Traficante, Giovanna, additional, van der Sluijs, Pleuntje J., additional, Vergano, Samantha A., additional, Vos, Niels, additional, Walden, Kellie K., additional, Azmanov, Dimitar, additional, Balci, Tugce B., additional, Banka, Siddharth, additional, Gecz, Jozef, additional, Henneman, Peter, additional, Lee, Jennifer A., additional, Mannens, Marcel M. A. M., additional, Roscioli, Tony, additional, Siu, Victoria, additional, Amor, David J., additional, Baynam, Gareth, additional, Bend, Eric G., additional, Boycott, Kym, additional, Brunetti‐Pierri, Nicola, additional, Campeau, Philippe M., additional, Campion, Dominique, additional, Christodoulou, John, additional, Dyment, David, additional, Esber, Natacha, additional, Fahrner, Jill A., additional, Fleming, Mark D., additional, Genevieve, David, additional, Heron, Delphine, additional, Husson, Thomas, additional, Kernohan, Kristin D., additional, McNeill, Alisdair, additional, Menke, Leonie A., additional, Merla, Giuseppe, additional, Prontera, Paolo, additional, Rockman‐Greenberg, Cheryl, additional, Schwartz, Charles, additional, Skinner, Steven A., additional, Stevenson, Roger E., additional, Vincent, Marie, additional, Vitobello, Antonio, additional, Tartaglia, Marco, additional, Alders, Marielle, additional, Tedder, Matthew L., additional, and Sadikovic, Bekim, additional

Published
2022
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9. Expanding the Spectrum of Oculocutaneous Albinism: Does Isolated Foveal Hypoplasia Really Exist?

Author

Rocca, Camilla, primary, Tiberi, Lucia, additional, Bargiacchi, Sara, additional, Palazzo, Viviana, additional, Landini, Samuela, additional, Marziali, Elisa, additional, Caputo, Roberto, additional, Tinelli, Francesca, additional, Marchi, Viviana, additional, Benedetto, Alessandro, additional, Pagliazzi, Angelica, additional, and Bacci, Giacomo Maria, additional

Published
2022
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10. Novel diagnostic DNA methylation episignatures expand and refine the epigenetic landscapes of Mendelian disorders

Author

Levy, Michael A., McConkey, Haley, Kerkhof, Jennifer, Barat-Houari, Mouna, Bargiacchi, Sara, Biamino, Elisa, Cappuccio, Gerarda, Ciolfi, Andrea, Clarke, Angus, DuPont, Barbara R., Elting, Mariet W., Faivre, Laurence, Fee, Timothy, Fletcher, Robin S., Cherik, Florian, Foroutan, Aidin, Friez, Michael J., Gervasini, Cristina, Haghshenas, Sadegheh, Hilton, Benjamin A., Jenkins, Zandra, Kaur, Simranpreet, Lewis, Suzanne, Louie, Raymond J., Maitz, Silvia, Milani, Donatella, Morgan, Angela T., Oegema, Renske, Ostergaard, Elsebet, Pallares, Nathalie Ruiz, Piccione, Maria, Pizzi, Simone, Plomp, Astrid S., Poulton, Cathryn, Reilly, Jack, Relator, Raissa, Rius, Rocio, Robertson, Stephen, Rooney, Kathleen, Rousseau, Justine, Santen, Gijs W. E., Santos-Simarro, Fernando, Schijns, Josephine, Squeo, Gabriella Maria, St John, Miya, Thauvin-Robinet, Christel, Traficante, Giovanna, van der Sluijs, Pleuntje J., Vergano, Samantha A., Vos, Niels, Walden, Kellie K., Azmanov, Dimitar, Balci, Tugce, Banka, Siddharth, Gecz, Jozef, Henneman, Peter, Lee, Jennifer A., Mannens, Marcel M. A. M., Roscioli, Tony, Siu, Victoria, Amor, David J., Baynam, Gareth, Bend, Eric G., Boycott, Kym, Brunetti-Pierri, Nicola, Campeau, Philippe M., Christodoulou, John, Dyment, David, Esber, Natacha, Fahrner, Jill A., Fleming, Mark D., Genevieve, David, Kerrnohan, Kristin D., McNeill, Alisdair, Menke, Leonie A., Merla, Giuseppe, Prontera, Paolo, Rockman-Greenberg, Cheryl, Schwartz, Charles, Skinner, Steven A., Stevenson, Roger E., Vitobello, Antonio, Tartaglia, Marco, Alders, Marielle, Tedder, Matthew L., Sadikovic, Bekim, Levy, Michael A., McConkey, Haley, Kerkhof, Jennifer, Barat-Houari, Mouna, Bargiacchi, Sara, Biamino, Elisa, Cappuccio, Gerarda, Ciolfi, Andrea, Clarke, Angus, DuPont, Barbara R., Elting, Mariet W., Faivre, Laurence, Fee, Timothy, Fletcher, Robin S., Cherik, Florian, Foroutan, Aidin, Friez, Michael J., Gervasini, Cristina, Haghshenas, Sadegheh, Hilton, Benjamin A., Jenkins, Zandra, Kaur, Simranpreet, Lewis, Suzanne, Louie, Raymond J., Maitz, Silvia, Milani, Donatella, Morgan, Angela T., Oegema, Renske, Ostergaard, Elsebet, Pallares, Nathalie Ruiz, Piccione, Maria, Pizzi, Simone, Plomp, Astrid S., Poulton, Cathryn, Reilly, Jack, Relator, Raissa, Rius, Rocio, Robertson, Stephen, Rooney, Kathleen, Rousseau, Justine, Santen, Gijs W. E., Santos-Simarro, Fernando, Schijns, Josephine, Squeo, Gabriella Maria, St John, Miya, Thauvin-Robinet, Christel, Traficante, Giovanna, van der Sluijs, Pleuntje J., Vergano, Samantha A., Vos, Niels, Walden, Kellie K., Azmanov, Dimitar, Balci, Tugce, Banka, Siddharth, Gecz, Jozef, Henneman, Peter, Lee, Jennifer A., Mannens, Marcel M. A. M., Roscioli, Tony, Siu, Victoria, Amor, David J., Baynam, Gareth, Bend, Eric G., Boycott, Kym, Brunetti-Pierri, Nicola, Campeau, Philippe M., Christodoulou, John, Dyment, David, Esber, Natacha, Fahrner, Jill A., Fleming, Mark D., Genevieve, David, Kerrnohan, Kristin D., McNeill, Alisdair, Menke, Leonie A., Merla, Giuseppe, Prontera, Paolo, Rockman-Greenberg, Cheryl, Schwartz, Charles, Skinner, Steven A., Stevenson, Roger E., Vitobello, Antonio, Tartaglia, Marco, Alders, Marielle, Tedder, Matthew L., and Sadikovic, Bekim

Abstract

Overlapping clinical phenotypes and an expanding breadth and complexity of genomic associations are a growing challenge in the diagnosis and clinical management of Mendelian disorders. The functional consequences and clinical impacts of genomic variation may involve unique, disorder-specific, genomic DNA methylation episignatures. In this study, we describe 19 novel episignature disorders and compare the findings alongside 38 previously established episignatures for a total of 57 episignatures associated with 65 genetic syndromes. We demonstrate increasing resolution and specificity ranging from protein complex, gene, sub-gene, protein domain, and even single nucleotide-level Mendelian episignatures. We show the power of multiclass modeling to develop highly accurate and disease-specific diagnostic classifiers. This study significantly expands the number and spectrum of disorders with detectable DNA methylation episignatures, improves the clinical diagnostic capabilities through the resolution of unsolved cases and the reclassification of variants of unknown clinical significance, and provides further insight into the molecular etiology of Mendelian conditions.

Published
2022

11. Functional correlation of genome-wide DNA methylation profiles in genetic neurodevelopmental disorders

Author

Levy, Michael A., Relator, Raissa, McConkey, Haley, Pranckeviciene, Erinija, Kerkhof, Jennifer, Barat-Houari, Mouna, Bargiacchi, Sara, Biamino, Elisa, Palomares Bralo, María, Cappuccio, Gerarda, Ciolfi, Andrea, Clarke, Angus, DuPont, Barbara R., Elting, Mariet W., Faivre, Laurence, Fee, Timothy, Ferilli, Marco, Fletcher, Robin S., Cherick, Florian, Foroutan, Aidin, Friez, Michael J., Gervasini, Cristina, Haghshenas, Sadegheh, Hilton, Benjamin A., Jenkins, Zandra, Kaur, Simranpreet, Lewis, Suzanne, Louie, Raymond J., Maitz, Silvia, Milani, Donatella, Morgan, Angela T., Oegema, Renske, Østergaard, Elsebet, Pallares, Nathalie R., Piccione, Maria, Plomp, Astrid S., Poulton, Cathryn, Reilly, Jack, Rius, Rocio, Robertson, Stephen, Rooney, Kathleen, Rousseau, Justine, Santen, Gijs W.E., Santos-Simarro, Fernando, Schijns, Josephine, Squeo, Gabriella M., John, Miya St, Thauvin-Robinet, Christel, Traficante, Giovanna, van der Sluijs, Pleuntje J., Vergano, Samantha A., Vos, Niels, Walden, Kellie K., Azmanov, Dimitar, Balci, Tugce B., Banka, Siddharth, Gecz, Jozef, Henneman, Peter, Lee, Jennifer A., Mannens, Marcel M.A.M., Roscioli, Tony, Siu, Victoria, Amor, David J., Baynam, Gareth, Bend, Eric G., Boycott, Kym, Brunetti-Pierri, Nicola, Campeau, Philippe M., Campion, Dominique, Christodoulou, John, Dyment, David, Esber, Natacha, Fahrner, Jill A., Fleming, Mark D., Genevieve, David, Heron, Delphine, Husson, Thomas, Kernohan, Kristin D., McNeill, Alisdair, Menke, Leonie A., Merla, Giuseppe, Prontera, Paolo, Rockman-Greenberg, Cheryl, Schwartz, Charles, Skinner, Steven A., Stevenson, Roger E., Vincent, Marie, Vitobello, Antonio, Tartaglia, Marco, Alders, Marielle, Tedder, Matthew L., Sadikovic, Bekim, Levy, Michael A., Relator, Raissa, McConkey, Haley, Pranckeviciene, Erinija, Kerkhof, Jennifer, Barat-Houari, Mouna, Bargiacchi, Sara, Biamino, Elisa, Palomares Bralo, María, Cappuccio, Gerarda, Ciolfi, Andrea, Clarke, Angus, DuPont, Barbara R., Elting, Mariet W., Faivre, Laurence, Fee, Timothy, Ferilli, Marco, Fletcher, Robin S., Cherick, Florian, Foroutan, Aidin, Friez, Michael J., Gervasini, Cristina, Haghshenas, Sadegheh, Hilton, Benjamin A., Jenkins, Zandra, Kaur, Simranpreet, Lewis, Suzanne, Louie, Raymond J., Maitz, Silvia, Milani, Donatella, Morgan, Angela T., Oegema, Renske, Østergaard, Elsebet, Pallares, Nathalie R., Piccione, Maria, Plomp, Astrid S., Poulton, Cathryn, Reilly, Jack, Rius, Rocio, Robertson, Stephen, Rooney, Kathleen, Rousseau, Justine, Santen, Gijs W.E., Santos-Simarro, Fernando, Schijns, Josephine, Squeo, Gabriella M., John, Miya St, Thauvin-Robinet, Christel, Traficante, Giovanna, van der Sluijs, Pleuntje J., Vergano, Samantha A., Vos, Niels, Walden, Kellie K., Azmanov, Dimitar, Balci, Tugce B., Banka, Siddharth, Gecz, Jozef, Henneman, Peter, Lee, Jennifer A., Mannens, Marcel M.A.M., Roscioli, Tony, Siu, Victoria, Amor, David J., Baynam, Gareth, Bend, Eric G., Boycott, Kym, Brunetti-Pierri, Nicola, Campeau, Philippe M., Campion, Dominique, Christodoulou, John, Dyment, David, Esber, Natacha, Fahrner, Jill A., Fleming, Mark D., Genevieve, David, Heron, Delphine, Husson, Thomas, Kernohan, Kristin D., McNeill, Alisdair, Menke, Leonie A., Merla, Giuseppe, Prontera, Paolo, Rockman-Greenberg, Cheryl, Schwartz, Charles, Skinner, Steven A., Stevenson, Roger E., Vincent, Marie, Vitobello, Antonio, Tartaglia, Marco, Alders, Marielle, Tedder, Matthew L., and Sadikovic, Bekim

Abstract

An expanding range of genetic syndromes are characterized by genome-wide disruptions in DNA methylation profiles referred to as episignatures. Episignatures are distinct, highly sensitive, and specific biomarkers that have recently been applied in clinical diagnosis of genetic syndromes. Episignatures are contained within the broader disorder-specific genome-wide DNA methylation changes, which can share significant overlap among different conditions. In this study, we performed functional genomic assessment and comparison of disorder-specific and overlapping genome-wide DNA methylation changes related to 65 genetic syndromes with previously described episignatures. We demonstrate evidence of disorder-specific and recurring genome-wide differentially methylated probes (DMPs) and regions (DMRs). The overall distribution of DMPs and DMRs across the majority of the neurodevelopmental genetic syndromes analyzed showed substantial enrichment in gene promoters and CpG islands, and under-representation of the more variable intergenic regions. Analysis showed significant enrichment of the DMPs and DMRs in gene pathways and processes related to neurodevelopment, including neurogenesis, synaptic signaling and synaptic transmission. This study expands beyond the diagnostic utility of DNA methylation episignatures by demonstrating correlation between the function of the mutated genes and the consequent genomic DNA methylation profiles as a key functional element in the molecular etiology of genetic neurodevelopmental disorders.

Published
2022

12. Functional correlation of genome-wide DNA methylation profiles in genetic neurodevelopmental disorders

Author

Genetica Klinische Genetica, Brain, Child Health, Levy, Michael A, Relator, Raissa, McConkey, Haley, Pranckeviciene, Erinija, Kerkhof, Jennifer, Barat-Houari, Mouna, Bargiacchi, Sara, Biamino, Elisa, Bralo, María Palomares, Cappuccio, Gerarda, Ciolfi, Andrea, Clarke, Angus, DuPont, Barbara R, Elting, Mariet W, Faivre, Laurence, Fee, Timothy, Ferilli, Marco, Fletcher, Robin S, Cherick, Florian, Foroutan, Aidin, Friez, Michael J, Gervasini, Cristina, Haghshenas, Sadegheh, Hilton, Benjamin A, Jenkins, Zandra, Kaur, Simranpreet, Lewis, Suzanne, Louie, Raymond J, Maitz, Silvia, Milani, Donatella, Morgan, Angela T, Oegema, Renske, Østergaard, Elsebet, Pallares, Nathalie Ruiz, Piccione, Maria, Plomp, Astrid S, Poulton, Cathryn, Reilly, Jack, Rius, Rocio, Robertson, Stephen, Rooney, Kathleen, Rousseau, Justine, Santen, Gijs W E, Santos-Simarro, Fernando, Schijns, Josephine, Squeo, Gabriella Maria, John, Miya St, Thauvin-Robinet, Christel, Traficante, Giovanna, van der Sluijs, Pleuntje J, Vergano, Samantha A, Vos, Niels, Walden, Kellie K, Azmanov, Dimitar, Balci, Tugce B, Banka, Siddharth, Gecz, Jozef, Henneman, Peter, Lee, Jennifer A, Mannens, Marcel M A M, Roscioli, Tony, Siu, Victoria, Amor, David J, Baynam, Gareth, Bend, Eric G, Boycott, Kym, Brunetti-Pierri, Nicola, Campeau, Philippe M, Campion, Dominique, Christodoulou, John, Dyment, David, Esber, Natacha, Fahrner, Jill A, Fleming, Mark D, Genevieve, David, Heron, Delphine, Husson, Thomas, Kernohan, Kristin D, McNeill, Alisdair, Menke, Leonie A, Merla, Giuseppe, Prontera, Paolo, Rockman-Greenberg, Cheryl, Schwartz, Charles, Skinner, Steven A, Stevenson, Roger E, Vincent, Marie, Vitobello, Antonio, Tartaglia, Marco, Alders, Marielle, Tedder, Matthew L, Sadikovic, Bekim, Genetica Klinische Genetica, Brain, Child Health, Levy, Michael A, Relator, Raissa, McConkey, Haley, Pranckeviciene, Erinija, Kerkhof, Jennifer, Barat-Houari, Mouna, Bargiacchi, Sara, Biamino, Elisa, Bralo, María Palomares, Cappuccio, Gerarda, Ciolfi, Andrea, Clarke, Angus, DuPont, Barbara R, Elting, Mariet W, Faivre, Laurence, Fee, Timothy, Ferilli, Marco, Fletcher, Robin S, Cherick, Florian, Foroutan, Aidin, Friez, Michael J, Gervasini, Cristina, Haghshenas, Sadegheh, Hilton, Benjamin A, Jenkins, Zandra, Kaur, Simranpreet, Lewis, Suzanne, Louie, Raymond J, Maitz, Silvia, Milani, Donatella, Morgan, Angela T, Oegema, Renske, Østergaard, Elsebet, Pallares, Nathalie Ruiz, Piccione, Maria, Plomp, Astrid S, Poulton, Cathryn, Reilly, Jack, Rius, Rocio, Robertson, Stephen, Rooney, Kathleen, Rousseau, Justine, Santen, Gijs W E, Santos-Simarro, Fernando, Schijns, Josephine, Squeo, Gabriella Maria, John, Miya St, Thauvin-Robinet, Christel, Traficante, Giovanna, van der Sluijs, Pleuntje J, Vergano, Samantha A, Vos, Niels, Walden, Kellie K, Azmanov, Dimitar, Balci, Tugce B, Banka, Siddharth, Gecz, Jozef, Henneman, Peter, Lee, Jennifer A, Mannens, Marcel M A M, Roscioli, Tony, Siu, Victoria, Amor, David J, Baynam, Gareth, Bend, Eric G, Boycott, Kym, Brunetti-Pierri, Nicola, Campeau, Philippe M, Campion, Dominique, Christodoulou, John, Dyment, David, Esber, Natacha, Fahrner, Jill A, Fleming, Mark D, Genevieve, David, Heron, Delphine, Husson, Thomas, Kernohan, Kristin D, McNeill, Alisdair, Menke, Leonie A, Merla, Giuseppe, Prontera, Paolo, Rockman-Greenberg, Cheryl, Schwartz, Charles, Skinner, Steven A, Stevenson, Roger E, Vincent, Marie, Vitobello, Antonio, Tartaglia, Marco, Alders, Marielle, Tedder, Matthew L, and Sadikovic, Bekim

Published
2022

13. Optic nerve involvement in CACNA1F-related disease: observations from a multicentric case series.

Author

Marziali, Elisa, Van Den Broeck, Filip, Bargiacchi, Sara, Fortunato, Pina, Caputo, Roberto, Sodi, Andrea, De Zaeytijd, Julie, Murro, Vittoria, Mucciolo, Dario Pasquale, Giorgio, Dario, Passerini, Ilaria, Palazzo, Viviana, Peluso, Francesca, de Baere, Elfride, Zeitz, Christina, Leroy, Bart P., Secci, Jacopo, and Bacci, Giacomo M.

Subjects
OPTIC nerve, PERIMETRY, RETINAL diseases, OPTIC nerve diseases, OPTICAL coherence tomography, REFRACTIVE errors, ARACHNOID cysts
Abstract

Congenital Stationary Night Blindness (CSNB) constitutes a group of non-progressive retinal disorders characterized by disturbances in scotopic vision and/or by a delay in adaptation to darkness, as well as by low visual acuity, myopia, nystagmus, and strabismus. Color vision and fundus appearance tend to be normal. To date, several CACNA1F gene variants have been linked to a CSNB phenotype but only few reports have focused on the optic nerve in this disease. Twelve patients underwent standard ophthalmological and genetic evaluation including spectral domain optical coherence tomography (SD-OCT), full-field electroretinography (ffERG), kinetic perimetry, fundus photography, magnetic resonance imaging (MRI), and next-generation sequencing (NGS). Bilateral thinning of the peripapillary nerve fiber layer (pRNFL) and the ganglion cell complex (GCC) supported involvement of the optic nerves. MRI, when available, was assessed for gross intracranial optic pathway abnormalities. All patients were shown to carry pathogenic variants in the CACNA1F gene, and all showed signs of optic nerve involvement. All patients showed a certain degree of myopic refractive error. Low average pRNFL thickness was evident in all patients. In three of them, pRNFL thickness was evaluated longitudinally and was proven to be stable over time. MRI imaging was unremarkable in all cases. Our data support the hypothesis that CACNA1F could be related to early-onset or congenital optic nerve involvement without any signs of a progressive optic neuropathy. Even though additional data from larger cohorts and longer follow-up periods are needed to further support and confirm our findings, there is a clear significance to our findings in the preparation for future CACNA1F gene therapy trials. [ABSTRACT FROM AUTHOR]

Published
2023
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15. Novel diagnostic DNA methylation episignatures expand and refine the epigenetic landscapes of Mendelian disorders

Author

Levy, Michael A., primary, McConkey, Haley, additional, Kerkhof, Jennifer, additional, Barat-Houari, Mouna, additional, Bargiacchi, Sara, additional, Biamino, Elisa, additional, Bralo, María Palomares, additional, Cappuccio, Gerarda, additional, Ciolfi, Andrea, additional, Clarke, Angus, additional, DuPont, Barbara R., additional, Elting, Mariet W., additional, Faivre, Laurence, additional, Fee, Timothy, additional, Fletcher, Robin S., additional, Cherik, Florian, additional, Foroutan, Aidin, additional, Friez, Michael J., additional, Gervasini, Cristina, additional, Haghshenas, Sadegheh, additional, Hilton, Benjamin A., additional, Jenkins, Zandra, additional, Kaur, Simranpreet, additional, Lewis, Suzanne, additional, Louie, Raymond J., additional, Maitz, Silvia, additional, Milani, Donatella, additional, Morgan, Angela T., additional, Oegema, Renske, additional, Østergaard, Elsebet, additional, Pallares, Nathalie Ruiz, additional, Piccione, Maria, additional, Pizzi, Simone, additional, Plomp, Astrid S., additional, Poulton, Cathryn, additional, Reilly, Jack, additional, Relator, Raissa, additional, Rius, Rocio, additional, Robertson, Stephen, additional, Rooney, Kathleen, additional, Rousseau, Justine, additional, Santen, Gijs W.E., additional, Santos-Simarro, Fernando, additional, Schijns, Josephine, additional, Squeo, Gabriella Maria, additional, St John, Miya, additional, Thauvin-Robinet, Christel, additional, Traficante, Giovanna, additional, van der Sluijs, Pleuntje J., additional, Vergano, Samantha A., additional, Vos, Niels, additional, Walden, Kellie K., additional, Azmanov, Dimitar, additional, Balci, Tugce, additional, Banka, Siddharth, additional, Gecz, Jozef, additional, Henneman, Peter, additional, Lee, Jennifer A., additional, Mannens, Marcel M.A.M., additional, Roscioli, Tony, additional, Siu, Victoria, additional, Amor, David J., additional, Baynam, Gareth, additional, Bend, Eric G., additional, Boycott, Kym, additional, Brunetti-Pierri, Nicola, additional, Campeau, Philippe M., additional, Christodoulou, John, additional, Dyment, David, additional, Esber, Natacha, additional, Fahrner, Jill A., additional, Fleming, Mark D., additional, Genevieve, David, additional, Kerrnohan, Kristin D., additional, McNeill, Alisdair, additional, Menke, Leonie A., additional, Merla, Giuseppe, additional, Prontera, Paolo, additional, Rockman-Greenberg, Cheryl, additional, Schwartz, Charles, additional, Skinner, Steven A., additional, Stevenson, Roger E., additional, Vitobello, Antonio, additional, Tartaglia, Marco, additional, Alders, Marielle, additional, Tedder, Matthew L., additional, and Sadikovic, Bekim, additional

Published
2022
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16. Chiari 1 malformation and exome sequencing in 51 trios: the emerging role of rare missense variants in chromatin-remodeling genes

Author

Provenzano, Aldesia, primary, La Barbera, Andrea, additional, Scagnet, Mirko, additional, Pagliazzi, Angelica, additional, Traficante, Giovanna, additional, Pantaleo, Marilena, additional, Tiberi, Lucia, additional, Vergani, Debora, additional, Kurtas, Nehir Edibe, additional, Guarducci, Silvia, additional, Bargiacchi, Sara, additional, Forzano, Giulia, additional, Artuso, Rosangela, additional, Palazzo, Viviana, additional, Kura, Ada, additional, Giordano, Flavio, additional, di Feo, Daniele, additional, Mortilla, Marzia, additional, De Filippi, Claudio, additional, Mattei, Gianluca, additional, Garavelli, Livia, additional, Giusti, Betti, additional, Genitori, Lorenzo, additional, Zuffardi, Orsetta, additional, and Giglio, Sabrina, additional

Published
2020
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22. The genetic and clinical spectrum of a large cohort of patients with distal renal tubular acidosis

Author

Palazzo, Viviana, primary, Provenzano, Aldesia, additional, Becherucci, Francesca, additional, Sansavini, Giulia, additional, Mazzinghi, Benedetta, additional, Orlandini, Valerio, additional, Giunti, Laura, additional, Roperto, Rosa Maria, additional, Pantaleo, Marilena, additional, Artuso, Rosangela, additional, Andreucci, Elena, additional, Bargiacchi, Sara, additional, Traficante, Giovanna, additional, Stagi, Stefano, additional, Murer, Luisa, additional, Benetti, Elisa, additional, Emma, Francesco, additional, Giordano, Mario, additional, Rivieri, Francesca, additional, Colussi, Giacomo, additional, Penco, Silvana, additional, Manfredini, Emanuela, additional, Caruso, Maria Rosa, additional, Garavelli, Livia, additional, Andrulli, Simeone, additional, Vergine, Gianluca, additional, Miglietti, Nunzia, additional, Mancini, Elena, additional, Malaventura, Cristina, additional, Percesepe, Antonio, additional, Grosso, Enrico, additional, Materassi, Marco, additional, Romagnani, Paola, additional, and Giglio, Sabrina, additional

Published
2017
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26. p.Arg1809Cys substitution in neurofibromin is associated with a distinctive NF1 phenotype without neurofibromas

Author

Pinna, Valentina, primary, Lanari, Valentina, additional, Daniele, Paola, additional, Consoli, Federica, additional, Agolini, Emanuele, additional, Margiotti, Katia, additional, Bottillo, Irene, additional, Torrente, Isabella, additional, Bruselles, Alessandro, additional, Fusilli, Caterina, additional, Ficcadenti, Anna, additional, Bargiacchi, Sara, additional, Trevisson, Eva, additional, Forzan, Monica, additional, Giustini, Sandra, additional, Leoni, Chiara, additional, Zampino, Giuseppe, additional, Cristina Digilio, Maria, additional, Dallapiccola, Bruno, additional, Clementi, Maurizio, additional, Tartaglia, Marco, additional, and De Luca, Alessandro, additional

Published
2014
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27. p.Arg1809Cys substitution in neurofibromin is associated with a distinctive NF1 phenotype without neurofibromas.

Author

Pinna, Valentina, Lanari, Valentina, Daniele, Paola, Consoli, Federica, Agolini, Emanuele, Margiotti, Katia, Bottillo, Irene, Torrente, Isabella, Bruselles, Alessandro, Fusilli, Caterina, Ficcadenti, Anna, Bargiacchi, Sara, Trevisson, Eva, Forzan, Monica, Giustini, Sandra, Leoni, Chiara, Zampino, Giuseppe, Cristina Digilio, Maria, Dallapiccola, Bruno, and Clementi, Maurizio

Subjects
GENETIC mutation, NEUROFIBROMATOSIS, NOONAN syndrome, SKINFOLD thickness, SCOLIOSIS, GENETICS, THERAPEUTICS
Abstract

Analysis of 786 NF1 mutation-positive subjects with clinical diagnosis of neurofibromatosis type 1 (NF1) allowed to identify the heterozygous c.5425C>T missense variant (p.Arg1809Cys) in six (0.7%) unrelated probands (three familial and three sporadic cases), all exhibiting a mild form of disease. Detailed clinical characterization of these subjects and other eight affected relatives showed that all individuals had multiple cafè-au-lait spots, frequently associated with skinfold freckling, but absence of discrete cutaneous or plexiform neurofibromas, Lisch nodules, typical NF1 osseous lesions or symptomatic optic gliomas. Facial features in half of the individuals were suggestive of Noonan syndrome. Our finding and revision of the literature consistently indicate that the c.5425C>T change is associated with a distinctive, mild form of NF1, providing new data with direct impact on genetic counseling and patient management. [ABSTRACT FROM AUTHOR]

Published
2015
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28. Functional correlation of genome-wide DNA methylation profiles in genetic neurodevelopmental disorders

Author

Michael A. Levy, Raissa Relator, Haley McConkey, Erinija Pranckeviciene, Jennifer Kerkhof, Mouna Barat‐Houari, Sara Bargiacchi, Elisa Biamino, María Palomares Bralo, Gerarda Cappuccio, Andrea Ciolfi, Angus Clarke, Barbara R. DuPont, Mariet W. Elting, Laurence Faivre, Timothy Fee, Marco Ferilli, Robin S. Fletcher, Florian Cherick, Aidin Foroutan, Michael J. Friez, Cristina Gervasini, Sadegheh Haghshenas, Benjamin A. Hilton, Zandra Jenkins, Simranpreet Kaur, Suzanne Lewis, Raymond J. Louie, Silvia Maitz, Donatella Milani, Angela T. Morgan, Renske Oegema, Elsebet Østergaard, Nathalie R. Pallares, Maria Piccione, Astrid S. Plomp, Cathryn Poulton, Jack Reilly, Rocio Rius, Stephen Robertson, Kathleen Rooney, Justine Rousseau, Gijs W. E. Santen, Fernando Santos‐Simarro, Josephine Schijns, Gabriella M. Squeo, Miya St John, Christel Thauvin‐Robinet, Giovanna Traficante, Pleuntje J. van der Sluijs, Samantha A. Vergano, Niels Vos, Kellie K. Walden, Dimitar Azmanov, Tugce B. Balci, Siddharth Banka, Jozef Gecz, Peter Henneman, Jennifer A. Lee, Marcel M. A. M. Mannens, Tony Roscioli, Victoria Siu, David J. Amor, Gareth Baynam, Eric G. Bend, Kym Boycott, Nicola Brunetti‐Pierri, Philippe M. Campeau, Dominique Campion, John Christodoulou, David Dyment, Natacha Esber, Jill A. Fahrner, Mark D. Fleming, David Genevieve, Delphine Heron, Thomas Husson, Kristin D. Kernohan, Alisdair McNeill, Leonie A. Menke, Giuseppe Merla, Paolo Prontera, Cheryl Rockman‐Greenberg, Charles Schwartz, Steven A. Skinner, Roger E. Stevenson, Marie Vincent, Antonio Vitobello, Marco Tartaglia, Marielle Alders, Matthew L. Tedder, Bekim Sadikovic, Human genetics, Amsterdam Reproduction & Development (AR&D), Pediatrics, Levy M.A., Relator R., McConkey H., Pranckeviciene E., Kerkhof J., Barat-Houari M., Bargiacchi S., Biamino E., Palomares Bralo M., Cappuccio G., Ciolfi A., Clarke A., DuPont B.R., Elting M.W., Faivre L., Fee T., Ferilli M., Fletcher R.S., Cherick F., Foroutan A., Friez M.J., Gervasini C., Haghshenas S., Hilton B.A., Jenkins Z., Kaur S., Lewis S., Louie R.J., Maitz S., Milani D., Morgan A.T., Oegema R., Ostergaard E., Pallares N.R., Piccione M., Plomp A.S., Poulton C., Reilly J., Rius R., Robertson S., Rooney K., Rousseau J., Santen G.W.E., Santos-Simarro F., Schijns J., Squeo G.M., John M.S., Thauvin-Robinet C., Traficante G., van der Sluijs P.J., Vergano S.A., Vos N., Walden K.K., Azmanov D., Balci T.B., Banka S., Gecz J., Henneman P., Lee J.A., Mannens M.M.A.M., Roscioli T., Siu V., Amor D.J., Baynam G., Bend E.G., Boycott K., Brunetti-Pierri N., Campeau P.M., Campion D., Christodoulou J., Dyment D., Esber N., Fahrner J.A., Fleming M.D., Genevieve D., Heron D., Husson T., Kernohan K.D., McNeill A., Menke L.A., Merla G., Prontera P., Rockman-Greenberg C., Schwartz C., Skinner S.A., Stevenson R.E., Vincent M., Vitobello A., Tartaglia M., Alders M., Tedder M.L., Sadikovic B., Levy, Michael A, Relator, Raissa, Mcconkey, Haley, Pranckeviciene, Erinija, Kerkhof, Jennifer, Barat-Houari, Mouna, Bargiacchi, Sara, Biamino, Elisa, Bralo, María Palomare, Cappuccio, Gerarda, Ciolfi, Andrea, Clarke, Angu, Dupont, Barbara R, Elting, Mariet W, Faivre, Laurence, Fee, Timothy, Ferilli, Marco, Fletcher, Robin S, Cherick, Florian, Foroutan, Aidin, Friez, Michael J, Gervasini, Cristina, Haghshenas, Sadegheh, Hilton, Benjamin A, Jenkins, Zandra, Kaur, Simranpreet, Lewis, Suzanne, Louie, Raymond J, Maitz, Silvia, Milani, Donatella, Morgan, Angela T, Oegema, Renske, Østergaard, Elsebet, Pallares, Nathalie Ruiz, Piccione, Maria, Plomp, Astrid S, Poulton, Cathryn, Reilly, Jack, Rius, Rocio, Robertson, Stephen, Rooney, Kathleen, Rousseau, Justine, Santen, Gijs W E, Santos-Simarro, Fernando, Schijns, Josephine, Squeo, Gabriella Maria, John, Miya St, Thauvin-Robinet, Christel, Traficante, Giovanna, van der Sluijs, Pleuntje J, Vergano, Samantha A, Vos, Niel, Walden, Kellie K, Azmanov, Dimitar, Balci, Tugce B, Banka, Siddharth, Gecz, Jozef, Henneman, Peter, Lee, Jennifer A, Mannens, Marcel M A M, Roscioli, Tony, Siu, Victoria, Amor, David J, Baynam, Gareth, Bend, Eric G, Boycott, Kym, Brunetti-Pierri, Nicola, Campeau, Philippe M, Campion, Dominique, Christodoulou, John, Dyment, David, Esber, Natacha, Fahrner, Jill A, Fleming, Mark D, Genevieve, David, Heron, Delphine, Husson, Thoma, Kernohan, Kristin D, Mcneill, Alisdair, Menke, Leonie A, Merla, Giuseppe, Prontera, Paolo, Rockman-Greenberg, Cheryl, Schwartz, Charle, Skinner, Steven A, Stevenson, Roger E, Vincent, Marie, Vitobello, Antonio, Tartaglia, Marco, Alders, Marielle, Tedder, Matthew L, Sadikovic, Bekim, Human Genetics, General Paediatrics, Graduate School, AGEM - Amsterdam Gastroenterology Endocrinology Metabolism, ARD - Amsterdam Reproduction and Development, ANS - Cellular & Molecular Mechanisms, ANS - Complex Trait Genetics, and ACS - Pulmonary hypertension & thrombosis

Subjects
DNA methylation, clinical diagnostics, Syndrome, DNA methylation, clinical diagnostics, episignatures, neurodevelopmental syndromes, neurodevelopmental syndromes, Epigenesis, Genetic, Neurodevelopmental Disorders, Genetics, Humans, CpG Islands, DNA, Intergenic, episignatures, Episignature, Genetics (clinical)
Abstract

An expanding range of genetic syndromes are characterized by genome-wide disruptions in DNA methylation profiles referred to as episignatures. Episignatures are distinct, highly sensitive and specific biomarkers that have recently been applied in clinical diagnosis of genetic syndromes. Episignatures are contained within the broader disorder-specific genome-wide DNA methylation changes which can share significant overlap amongst different conditions. In this study we performed functional genomic assessment and comparison of disorder-specific and overlapping genome-wide DNA methylation changes related to 65 genetic syndromes with previously described episignatures. We demonstrate evidence of disorder-specific and recurring genome-wide differentially methylated probes (DMPs) and regions (DMRs). The overall distribution of DMPs and DMRs across the majority of the neurodevelopmental genetic syndromes analyzed showed substantial enrichment in gene promoters and CpG islands, and under-representation of the more variable intergenic regions. Analysis showed significant enrichment of the DMPs and DMRs in gene pathways and processes related to neurodevelopment, including neurogenesis, synaptic signaling and synaptic transmission. This study expands beyond the diagnostic utility of DNA methylation episignatures by demonstrating correlation between the function of the mutated genes and the consequent genomic DNA methylation profiles as a key functional element in the molecular etiology of genetic neurodevelopmental disorders. This article is protected by copyright. All rights reserved.

Published
2022

29. Novel diagnostic DNA methylation episignatures expand and refine the epigenetic landscapes of Mendelian disorders

Author

Michael A. Levy, Haley McConkey, Jennifer Kerkhof, Mouna Barat-Houari, Sara Bargiacchi, Elisa Biamino, María Palomares Bralo, Gerarda Cappuccio, Andrea Ciolfi, Angus Clarke, Barbara R. DuPont, Mariet W. Elting, Laurence Faivre, Timothy Fee, Robin S. Fletcher, Florian Cherik, Aidin Foroutan, Michael J. Friez, Cristina Gervasini, Sadegheh Haghshenas, Benjamin A. Hilton, Zandra Jenkins, Simranpreet Kaur, Suzanne Lewis, Raymond J. Louie, Silvia Maitz, Donatella Milani, Angela T. Morgan, Renske Oegema, Elsebet Østergaard, Nathalie Ruiz Pallares, Maria Piccione, Simone Pizzi, Astrid S. Plomp, Cathryn Poulton, Jack Reilly, Raissa Relator, Rocio Rius, Stephen Robertson, Kathleen Rooney, Justine Rousseau, Gijs W.E. Santen, Fernando Santos-Simarro, Josephine Schijns, Gabriella Maria Squeo, Miya St John, Christel Thauvin-Robinet, Giovanna Traficante, Pleuntje J. van der Sluijs, Samantha A. Vergano, Niels Vos, Kellie K. Walden, Dimitar Azmanov, Tugce Balci, Siddharth Banka, Jozef Gecz, Peter Henneman, Jennifer A. Lee, Marcel M.A.M. Mannens, Tony Roscioli, Victoria Siu, David J. Amor, Gareth Baynam, Eric G. Bend, Kym Boycott, Nicola Brunetti-Pierri, Philippe M. Campeau, John Christodoulou, David Dyment, Natacha Esber, Jill A. Fahrner, Mark D. Fleming, David Genevieve, Kristin D. Kerrnohan, Alisdair McNeill, Leonie A. Menke, Giuseppe Merla, Paolo Prontera, Cheryl Rockman-Greenberg, Charles Schwartz, Steven A. Skinner, Roger E. Stevenson, Antonio Vitobello, Marco Tartaglia, Marielle Alders, Matthew L. Tedder, Bekim Sadikovic, Levy, Michael A, Mcconkey, Haley, Kerkhof, Jennifer, Barat-Houari, Mouna, Bargiacchi, Sara, Biamino, Elisa, Bralo, María Palomare, Cappuccio, Gerarda, Ciolfi, Andrea, Clarke, Angu, Dupont, Barbara R, Elting, Mariet W, Faivre, Laurence, Fee, Timothy, Fletcher, Robin S, Cherik, Florian, Foroutan, Aidin, Friez, Michael J, Gervasini, Cristina, Haghshenas, Sadegheh, Hilton, Benjamin A, Jenkins, Zandra, Kaur, Simranpreet, Lewis, Suzanne, Louie, Raymond J, Maitz, Silvia, Milani, Donatella, Morgan, Angela T, Oegema, Renske, Østergaard, Elsebet, Pallares, Nathalie Ruiz, Piccione, Maria, Pizzi, Simone, Plomp, Astrid S, Poulton, Cathryn, Reilly, Jack, Relator, Raissa, Rius, Rocio, Robertson, Stephen, Rooney, Kathleen, Rousseau, Justine, Santen, Gijs W E, Santos-Simarro, Fernando, Schijns, Josephine, Squeo, Gabriella Maria, St John, Miya, Thauvin-Robinet, Christel, Traficante, Giovanna, van der Sluijs, Pleuntje J, Vergano, Samantha A, Vos, Niel, Walden, Kellie K, Azmanov, Dimitar, Balci, Tugce, Banka, Siddharth, Gecz, Jozef, Henneman, Peter, Lee, Jennifer A, Mannens, Marcel M A M, Roscioli, Tony, Siu, Victoria, Amor, David J, Baynam, Gareth, Bend, Eric G, Boycott, Kym, Brunetti-Pierri, Nicola, Campeau, Philippe M, Christodoulou, John, Dyment, David, Esber, Natacha, Fahrner, Jill A, Fleming, Mark D, Genevieve, David, Kerrnohan, Kristin D, Mcneill, Alisdair, Menke, Leonie A, Merla, Giuseppe, Prontera, Paolo, Rockman-Greenberg, Cheryl, Schwartz, Charle, Skinner, Steven A, Stevenson, Roger E, Vitobello, Antonio, Tartaglia, Marco, Alders, Marielle, Tedder, Matthew L, Sadikovic, Bekim, Human Genetics, General Paediatrics, Graduate School, Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam Reproduction & Development (AR&D), ACS - Pulmonary hypertension & thrombosis, Amsterdam Neuroscience - Cellular & Molecular Mechanisms, and Amsterdam Neuroscience - Complex Trait Genetics

Subjects
Clinical diagnostic, INTELLECTUAL DISABILITY, COMPLEX, DNA methylation, MUTATIONS, SIGNATURE, Neurodevelopmental disorders, Epigenetic, QH426-470, VARIANTS, Article, DOMAIN, Clinical diagnostics, Genetics, Molecular Medicine, Epigenetics, Episignatures, COFFIN-SIRIS, Episignature, Genetics (clinical)
Abstract

Summary: Overlapping clinical phenotypes and an expanding breadth and complexity of genomic associations are a growing challenge in the diagnosis and clinical management of Mendelian disorders. The functional consequences and clinical impacts of genomic variation may involve unique, disorder-specific, genomic DNA methylation episignatures. In this study, we describe 19 novel episignature disorders and compare the findings alongside 38 previously established episignatures for a total of 57 episignatures associated with 65 genetic syndromes. We demonstrate increasing resolution and specificity ranging from protein complex, gene, sub-gene, protein domain, and even single nucleotide-level Mendelian episignatures. We show the power of multiclass modeling to develop highly accurate and disease-specific diagnostic classifiers. This study significantly expands the number and spectrum of disorders with detectable DNA methylation episignatures, improves the clinical diagnostic capabilities through the resolution of unsolved cases and the reclassification of variants of unknown clinical significance, and provides further insight into the molecular etiology of Mendelian conditions.

Published
2022

30. Endocrinological features and epileptic encephalopathy in COX deficiency due to SCO1 mutations: case series and review of literature.

Author

Barbato A, Gori G, Sacchini M, Pochiero F, Bargiacchi S, Traficante G, Palazzo V, Tiberi L, Bianchini C, Mei D, Parrini E, Pisano T, Procopio E, Guerrini R, Peron A, and Stagi S

Abstract

Context: Cytochrome C oxidase (COX) is the fourth component of the respiratory chain and is located within the internal membrane of mitochondria. COX deficiency causes an inherited mitochondrial disease with significant genetic and phenotypic heterogeneity. Four clinical subtypes have been identified, each with distinct phenotypes and genetic variants. Mitochondrial complex IV deficiency nuclear type 4 (MC4DN4) is a form of COX deficiency associated with pathogenic variants in the SCO1 gene., Case Description: We describe three patients with MC4DN4 with developmental and epileptic encephalopathy (DEE), hypopituitarism, and SCO1 pathogenic variants. These patients' phenotypes considerably differ from previously reported MC4DN4 phenotypes as they associate DEE with progressive hypopituitarism and survival beyond the first months after birth. Pituitary deficiency in these patients progressively worsened and mainly involved growth hormone secretion and thyroid function., Conclusions: Our findings expand knowledge of phenotypic variability in MC4DN4 and suggest that SCO1 is a candidate gene for genetic hypopituitarism and DEE., Significance Statement: Our paper describes three patients affected by MC4DN4 with hypopituitarism and developmental and epileptic encephalopathy (DEE), two features that have never been associated with this condition. In addition, we reviewed the clinical features of all previous cases of MC4DN4 to give the other clinicians a wide picture of the clinical phenotype of this genetic disease. We hope that the publication of our data may help others to identify this disease and consider the chance to analyze the SCO1 gene in cases of DEE associated with pituitary dysfunction. Our article contributes to expanding the spectrum of genetic hypopituitarism and proposes a model to explain an association between this condition, mitochondrial anomalies, and neurodevelopmental defects.

Published
2024
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31. Novel diagnostic DNA methylation episignatures expand and refine the epigenetic landscapes of Mendelian disorders.

Author

Levy MA, McConkey H, Kerkhof J, Barat-Houari M, Bargiacchi S, Biamino E, Bralo MP, Cappuccio G, Ciolfi A, Clarke A, DuPont BR, Elting MW, Faivre L, Fee T, Fletcher RS, Cherik F, Foroutan A, Friez MJ, Gervasini C, Haghshenas S, Hilton BA, Jenkins Z, Kaur S, Lewis S, Louie RJ, Maitz S, Milani D, Morgan AT, Oegema R, Østergaard E, Pallares NR, Piccione M, Pizzi S, Plomp AS, Poulton C, Reilly J, Relator R, Rius R, Robertson S, Rooney K, Rousseau J, Santen GWE, Santos-Simarro F, Schijns J, Squeo GM, St John M, Thauvin-Robinet C, Traficante G, van der Sluijs PJ, Vergano SA, Vos N, Walden KK, Azmanov D, Balci T, Banka S, Gecz J, Henneman P, Lee JA, Mannens MMAM, Roscioli T, Siu V, Amor DJ, Baynam G, Bend EG, Boycott K, Brunetti-Pierri N, Campeau PM, Christodoulou J, Dyment D, Esber N, Fahrner JA, Fleming MD, Genevieve D, Kerrnohan KD, McNeill A, Menke LA, Merla G, Prontera P, Rockman-Greenberg C, Schwartz C, Skinner SA, Stevenson RE, Vitobello A, Tartaglia M, Alders M, Tedder ML, and Sadikovic B

Abstract

Overlapping clinical phenotypes and an expanding breadth and complexity of genomic associations are a growing challenge in the diagnosis and clinical management of Mendelian disorders. The functional consequences and clinical impacts of genomic variation may involve unique, disorder-specific, genomic DNA methylation episignatures. In this study, we describe 19 novel episignature disorders and compare the findings alongside 38 previously established episignatures for a total of 57 episignatures associated with 65 genetic syndromes. We demonstrate increasing resolution and specificity ranging from protein complex, gene, sub-gene, protein domain, and even single nucleotide-level Mendelian episignatures. We show the power of multiclass modeling to develop highly accurate and disease-specific diagnostic classifiers. This study significantly expands the number and spectrum of disorders with detectable DNA methylation episignatures, improves the clinical diagnostic capabilities through the resolution of unsolved cases and the reclassification of variants of unknown clinical significance, and provides further insight into the molecular etiology of Mendelian conditions., Competing Interests: The authors declare no competing interests., (© 2021 The Author(s).)

Published
2021
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32. [Clinical and molecular study in a family with autosomal dominant hypohidrotic ectodermal dysplasia].

Author

Callea M, Cammarata-Scalisi F, Willoughby CE, Giglio SR, Sani I, Bargiacchi S, Traficante G, Bellacchio E, Tadini G, Yavuz I, Galeotti A, and Clarich G

Subjects
Child, Preschool, Edar Receptor genetics, Humans, Male, Mutation, Pedigree, Ectodermal Dysplasia 1, Anhidrotic diagnosis, Ectodermal Dysplasia 1, Anhidrotic genetics
Abstract

Hypohidrotic ectodermal dysplasia (HED) is a rare disease characterized by deficiency in development of structure derived from the ectoderm and is caused by mutations in the genes EDA, EDAR, or EDARADD. Phenotypes caused by mutations in these three may exhibit similar clinical features, explained by a common signaling pathway. Mutations in EDA gene cause X linked HED, which is the most common form. Mutations in EDAR and EDARADD genes cause autosomal dominant and recessive form of HED. The most striking clinical findings in HED are hypodontia, hypotrichosis and hypohidrosis that can lead to episodes of hyperthermia. We report on clinical findings in a child with HED with autosomal dominant inheritance pattern with a heterozygous mutation c.1072C>T (p.Arg358X) in the EDAR gene. A review of the literature with regard to other cases presenting the same mutation has been carried out and discussed., (Sociedad Argentina de Pediatría.)

Published
2017
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