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1. Clinical and genetic delineation of autosomal recessive and dominant ACTL6B-related developmental brain disorders

Author

Cali, Elisa, Quirin, Tania, Rocca, Clarissa, Efthymiou, Stephanie, Riva, Antonella, Marafi, Dana, Zaki, Maha S., Suri, Mohnish, Dominguez, Roberto, Elbendary, Hasnaa M., Alavi, Shahryar, Abdel-Hamid, Mohamed S., Morsy, Heba, Mau-Them, Frederic Tran, Nizon, Mathilde, Tesner, Pavel, Ryba, Lukáš, Zafar, Faisal, Rana, Nuzhat, Saadi, Nebal W., Firoozfar, Zahra, Gencpinar, Pinar, Unay, Bulent, Ustun, Canan, Bruel, Ange-Line, Coubes, Christine, Stefanich, Jennifer, Sezer, Ozlem, Agolini, Emanuele, Novelli, Antonio, Vasco, Gessica, Lettori, Donatella, Milh, Mathieu, Villard, Laurent, Zeidler, Shimriet, Opperman, Henry, Strehlow, Vincent, Issa, Mahmoud Y., El Khassab, Hebatallah, Chand, Prem, Ibrahim, Shahnaz, Nejad-Rashidi, Ali, Miryounesi, Mohammad, Larki, Pegah, Morrison, Jennifer, Cristian, Ingrid, Thiffault, Isabelle, Bertsch, Nicole L., Noh, Grace J., Pappas, John, Moran, Ellen, Marinakis, Nikolaos M., Traeger-Synodinos, Joanne, Hosseini, Susan, Abbaszadegan, Mohammad Reza, Caumes, Roseline, Vissers, Lisenka E.L.M., Neshatdoust, Maedeh, Montazer, Mostafa Zohour, El Fahime, Elmostafa, Canavati, Christin, Kamal, Lara, Kanaan, Moien, Askander, Omar, Voinova, Victoria, Levchenko, Olga, Haider, Shahzhad, Halbach, Sara S., Maia, Elias Rayana, Mansoor, Salehi, Vivek, Jain, Tawde, Sanjukta, Challa, Viveka Santhosh R., Gowda, Vykuntaraju K., Srinivasan, Varunvenkat M., Victor, Lucas Alves, Pinero-Banos, Benito, Hague, Jennifer, Ei-Awady, Heba Ahmed, Maria de Miranda Henriques-Souza, Adelia, Cheema, Huma Arshad, Anjum, Muhammad Nadeem, Idkaidak, Sara, Alqarajeh, Firas, Atawneh, Osama, Mor-Shaked, Hagar, Harel, Tamar, Zifarelli, Giovanni, Bauer, Peter, Kok, Fernando, Kitajima, Joao Paulo, Monteiro, Fabiola, Josahkian, Juliana, Lesca, Gaetan, Chatron, Nicolas, Ville, Dorothe, Murphy, David, Neul, Jeffrey L., Mullegama, Sureni V., Begtrup, Amber, Herman, Isabella, Mitani, Tadahiro, Posey, Jennifer E., Tay, Chee Geap, Javed, Iram, Carr, Lucinda, Kanani, Farah, Beecroft, Fiona, Hane, Lee, Abdelkreem, Elsayed, Macek, Milan, Bispo, Luciana, Elmaksoud, Marwa Abd, Hashemi-Gorji, Farzad, Pehlivan, Davut, Amor, David J., Jamra, Rami Abou, Chung, Wendy K., Ghayoor, Eshan Karimiani, Campeau, Philippe, Alkuraya, Fowzan S., Pagnamenta, Alistair T., Gleeson, Joseph, Lupski, James R., Striano, Pasquale, Moreno-De-Luca, Andres, Lafontaine, Denis L.J., Houlden, Henry, and Maroofian, Reza

Published
2024
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3. Novel homozygous mutations in Pakistani families with Charcot–Marie–Tooth disease

Author

Sumaira Kanwal, Yu JIn Choi, Si On Lim, Hee Ji Choi, Jin Hee Park, Rana Nuzhat, Aneela khan, Shazia Perveen, Byung-Ok Choi, and Ki Wha Chung

Subjects
Charcot–Marie–Tooth disease (CMT), Consanguinity, Homozygosity, Pakistan, Whole exome sequencing, Internal medicine, RC31-1245, Genetics, QH426-470
Abstract

Abstract Background Charcot–Marie–Tooth disease (CMT) is a group of genetically and clinically heterogeneous peripheral nervous system disorders. Few studies have identified genetic causes of CMT in the Pakistani patients. Methods This study was performed to identify pathogenic mutations in five consanguineous Pakistani CMT families negative for PMP22 duplication. Genomic screening was performed by application of whole exome sequencing. Results We identified five pathogenic or likely pathogenic homozygous mutations in four genes: c.2599C > T (p.Gln867*) and c.3650G > A (p.Gly1217Asp) in SH3TC2, c.19C > T (p.Arg7*) in HK1, c.247delG (p.Gly83Alafs*44) in REEP1, and c.334G > A (p.Val112Met) in MFN2. These mutations have not been reported in CMT patients. Mutations in SH3TC2, HK1, REEP1, and MFN2 have been reported to be associated with CMT4C, CMT4G, dHMN5B (DSMA5B), and CMT2A, respectively. The genotype–phenotype correlations were confirmed in all the examined families. We also confirmed that both alleles from the homozygous variants originated from a single ancestor using homozygosity mapping. Conclusions This study found five novel mutations as the underlying causes of CMT. Pathogenic mutations in SH3TC2, HK1, and REEP1 have been reported rarely in other populations, suggesting ethnic-specific distribution. This study would be useful for the exact molecular diagnosis and treatment of CMT in Pakistani patients.

Published
2021
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4. De Novo and Bi-allelic Pathogenic Variants in NARS1 Cause Neurodevelopmental Delay Due to Toxic Gain-of-Function and Partial Loss-of-Function Effects

Author

Manole, Andreea, Efthymiou, Stephanie, O’Connor, Emer, Mendes, Marisa I., Jennings, Matthew, Maroofian, Reza, Davagnanam, Indran, Mankad, Kshitij, Lopez, Maria Rodriguez, Salpietro, Vincenzo, Harripaul, Ricardo, Badalato, Lauren, Walia, Jagdeep, Francklyn, Christopher S., Athanasiou-Fragkouli, Alkyoni, Sullivan, Roisin, Desai, Sonal, Baranano, Kristin, Zafar, Faisal, Rana, Nuzhat, Ilyas, Muhammed, Horga, Alejandro, Kara, Majdi, Mattioli, Francesca, Goldenberg, Alice, Griffin, Helen, Piton, Amelie, Henderson, Lindsay B., Kara, Benyekhlef, Aslanger, Ayca Dilruba, Raaphorst, Joost, Pfundt, Rolph, Portier, Ruben, Shinawi, Marwan, Kirby, Amelia, Christensen, Katherine M., Wang, Lu, Rosti, Rasim O., Paracha, Sohail A., Sarwar, Muhammad T., Jenkins, Dagan, Ahmed, Jawad, Santoni, Federico A., Ranza, Emmanuelle, Iwaszkiewicz, Justyna, Cytrynbaum, Cheryl, Weksberg, Rosanna, Wentzensen, Ingrid M., Guillen Sacoto, Maria J., Si, Yue, Telegrafi, Aida, Andrews, Marisa V., Baldridge, Dustin, Gabriel, Heinz, Mohr, Julia, Oehl-Jaschkowitz, Barbara, Debard, Sylvain, Senger, Bruno, Fischer, Frédéric, van Ravenwaaij, Conny, Fock, Annemarie J.M., Stevens, Servi J.C., Bähler, Jürg, Nasar, Amina, Mantovani, John F., Manzur, Adnan, Sarkozy, Anna, Smith, Desirée E.C., Salomons, Gajja S., Ahmed, Zubair M., Riazuddin, Shaikh, Riazuddin, Saima, Usmani, Muhammad A., Seibt, Annette, Ansar, Muhammad, Antonarakis, Stylianos E., Vincent, John B., Ayub, Muhammad, Grimmel, Mona, Jelsig, Anne Marie, Hjortshøj, Tina Duelund, Karstensen, Helena Gásdal, Hummel, Marybeth, Haack, Tobias B., Jamshidi, Yalda, Distelmaier, Felix, Horvath, Rita, Gleeson, Joseph G., Becker, Hubert, Mandel, Jean-Louis, Koolen, David A., and Houlden, Henry

Published
2020
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5. Human mutations in SLITRK3 implicated in GABAergic synapse development in mice

Author

Efthymiou, Stephanie, primary, Han, Wenyan, additional, Ilyas, Muhammad, additional, Li, Jun, additional, Yu, Yichao, additional, Scala, Marcello, additional, Malintan, Nancy T., additional, Vavouraki, Nikoleta, additional, Mankad, Kshitij, additional, Maroofian, Reza, additional, Rocca, Clarissa, additional, Salpietro, Vincenzo, additional, Lakhani, Shenela, additional, Mallack, Eric J., additional, Palculict, Timothy Blake, additional, Li, Hong, additional, Zhang, Guojun, additional, Zafar, Faisal, additional, Rana, Nuzhat, additional, Takashima, Noriko, additional, Matsunaga, Hayato, additional, Manzoni, Claudia, additional, Striano, Pasquale, additional, Lythgoe, Mark F., additional, Aruga, Jun, additional, Lu, Wei, additional, and Houlden, Henry, additional

Published
2024
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6. Loss of UGP2 in brain leads to a severe epileptic encephalopathy, emphasizing that bi-allelic isoform-specific start-loss mutations of essential genes can cause genetic diseases

Author

Perenthaler, Elena, Nikoncuk, Anita, Yousefi, Soheil, Berdowski, Woutje M., Alsagob, Maysoon, Capo, Ivan, van der Linde, Herma C., van den Berg, Paul, Jacobs, Edwin H., Putar, Darija, Ghazvini, Mehrnaz, Aronica, Eleonora, van IJcken, Wilfred F. J., de Valk, Walter G., Medici-van den Herik, Evita, van Slegtenhorst, Marjon, Brick, Lauren, Kozenko, Mariya, Kohler, Jennefer N., Bernstein, Jonathan A., Monaghan, Kristin G., Begtrup, Amber, Torene, Rebecca, Al Futaisi, Amna, Al Murshedi, Fathiya, Mani, Renjith, Al Azri, Faisal, Kamsteeg, Erik-Jan, Mojarrad, Majid, Eslahi, Atieh, Khazaei, Zaynab, Darmiyan, Fateme Massinaei, Doosti, Mohammad, Karimiani, Ehsan Ghayoor, Vandrovcova, Jana, Zafar, Faisal, Rana, Nuzhat, Kandaswamy, Krishna K., Hertecant, Jozef, Bauer, Peter, AlMuhaizea, Mohammed A., Salih, Mustafa A., Aldosary, Mazhor, Almass, Rawan, Al-Quait, Laila, Qubbaj, Wafa, Coskun, Serdar, Alahmadi, Khaled O., Hamad, Muddathir H. A., Alwadaee, Salem, Awartani, Khalid, Dababo, Anas M., Almohanna, Futwan, Colak, Dilek, Dehghani, Mohammadreza, Mehrjardi, Mohammad Yahya Vahidi, Gunel, Murat, Ercan-Sencicek, A. Gulhan, Passi, Gouri Rao, Cheema, Huma Arshad, Efthymiou, Stephanie, Houlden, Henry, Bertoli-Avella, Aida M., Brooks, Alice S., Retterer, Kyle, Maroofian, Reza, Kaya, Namik, van Ham, Tjakko J., and Barakat, Tahsin Stefan

Published
2020
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7. TMX2 Is a Crucial Regulator of Cellular Redox State, and Its Dysfunction Causes Severe Brain Developmental Abnormalities

Author

Vandervore, Laura V., Schot, Rachel, Milanese, Chiara, Smits, Daphne J., Kasteleijn, Esmee, Fry, Andrew E., Pilz, Daniela T., Brock, Stefanie, Börklü-Yücel, Esra, Post, Marco, Bahi-Buisson, Nadia, Sánchez-Soler, María José, van Slegtenhorst, Marjon, Keren, Boris, Afenjar, Alexandra, Coury, Stephanie A., Tan, Wen-Hann, Oegema, Renske, de Vries, Linda S., Fawcett, Katherine A., Nikkels, Peter G.J., Bertoli-Avella, Aida, Al Hashem, Amal, Alwabel, Abdulmalik A., Tlili-Graiess, Kalthoum, Efthymiou, Stephanie, Zafar, Faisal, Rana, Nuzhat, Bibi, Farah, Houlden, Henry, Maroofian, Reza, Person, Richard E., Crunk, Amy, Savatt, Juliann M., Turner, Lisbeth, Doosti, Mohammad, Karimiani, Ehsan Ghayoor, Saadi, Nebal Waill, Akhondian, Javad, Lequin, Maarten H., Kayserili, Hülya, van der Spek, Peter J., Jansen, Anna C., Kros, Johan M., Verdijk, Robert M., Milošević, Nataša Jovanov, Fornerod, Maarten, Mastroberardino, Pier Giorgio, and Mancini, Grazia M.S.

Published
2019
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8. ZSCAN10 deficiency causes a neurodevelopmental disorder with characteristic oto-facial malformations.

Author

Laugwitz, Lucia, Cheng, Fubo, Collins, Stephan C, Hustinx, Alexander, Navarro, Nicolas, Welsch, Simon, Cox, Helen, Hsieh, Tzung-Chien, Vijayananth, Aswinkumar, Buchert, Rebecca, Bender, Benjamin, Efthymiou, Stephanie, Murphy, David, Zafar, Faisal, Rana, Nuzhat, Grasshoff, Ute, Falb, Ruth J, Grimmel, Mona, Seibt, Annette, and Zheng, Wenxu

Subjects
INNER ear physiology, NUCLEOTIDE sequencing, NEURAL development, EMBRYONIC stem cells, SEMICIRCULAR canals, GENE targeting
Abstract

Neurodevelopmental disorders are major indications for genetic referral and have been linked to more than 1500 loci including genes encoding transcriptional regulators. The dysfunction of transcription factors often results in characteristic syndromic presentations; however, at least half of these patients lack a genetic diagnosis. The implementation of machine learning approaches has the potential to aid in the identification of new disease genes and delineate associated phenotypes. Next generation sequencing was performed in seven affected individuals with neurodevelopmental delay and dysmorphic features. Clinical characterization included reanalysis of available neuroimaging datasets and 2D portrait image analysis with GestaltMatcher. The functional consequences of ZSCAN10 loss were modelled in mouse embryonic stem cells (mESCs), including a knockout and a representative ZSCAN10 protein truncating variant. These models were characterized by gene expression and western blot analyses, chromatin immunoprecipitation and quantitative PCR (ChIP-qPCR) and immunofluorescence staining. Zscan10 knockout mouse embryos were generated and phenotyped. We prioritized bi-allelic ZSCAN10 loss-of-function variants in seven affected individuals from five unrelated families as the underlying molecular cause. RNA-sequencing analyses in Zscan10 −/− mESCs indicated dysregulation of genes related to stem cell pluripotency. In addition, we established in mESCs the loss-of-function mechanism for a representative human ZSCAN10 protein truncating variant by showing alteration of its expression levels and subcellular localization, interfering with its binding to DNA enhancer targets. Deep phenotyping revealed global developmental delay, facial asymmetry and malformations of the outer ear as consistent clinical features. Cerebral MRI showed dysplasia of the semicircular canals as an anatomical correlate of sensorineural hearing loss. Facial asymmetry was confirmed as a clinical feature by GestaltMatcher and was recapitulated in the Zscan10 mouse model along with inner and outer ear malformations. Our findings provide evidence of a novel syndromic neurodevelopmental disorder caused by bi-allelic loss-of-function variants in ZSCAN10. [ABSTRACT FROM AUTHOR]

Published
2024
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9. Bi-allelic genetic variants in the translational GTPases GTPBP1 and GTPBP2 cause a distinct identical neurodevelopmental syndrome

Author

Hannah, Michael G., Bugiardini, Enrico, Bertini, Enrico, Kriouile, Yamna, El-Khorassani, Mohamed, Aguennouz, Mhammed, Groppa, Stanislav, Karashova, Blagovesta M., Goraya, Jatinder S., Sultan, Tipu, Avdjieva, Daniela, Kathom, Hadil, Tincheva, Radka, Banu, Selina, Veggiotti, Pierangelo, Verrotti, Alberto, Lanari, Marcello, Savasta, Salvatore, Macaya, Alfons, Garavaglia, Barbara, Borgione, Eugenia, Papacostas, Savvas, Vikelis, Michail, Chelban, Viorica, Kaiyrzhanov, Rauan, Cortese, Andrea, Sullivan, Roisin, Papanicolaou, Eleni Z., Dardiotis, Efthymios, Maqbool, Shazia, Ibrahim, Shahnaz, Kirmani, Salman, Rana, Nuzhat N., Atawneh, Osama, Lim, Shen-Yang, Zuccotti, Gian V., Marseglia, Gian L., Esposito, Susanna, Shaikh, Farooq, Cogo, Paola, Corsello, Giovanni, Mangano, Salvatore, Nardello, Rosaria, Mangano, Donato, Scardamaglia, Annarita, Koutsis, George, Scuderi, Carmela, Ferrara, Pietro, Morello, Giovanna, Zollo, Massimo, Berni-Canani, Roberto, Terracciano, Luigi M., Sisto, Antonio, Di Fabio, Sandra, Strano, Federica, Scorrano, Giovanna, Di Bella, Saverio, Di Francesco, Ludovica, Manizha, Ganieva, Isrofilov, Maksud, Guliyeva, Ulviyya, Salayev, Kamran, Khachatryan, Samson, Xiromerisiou, Georgia, Spanaki, Cleanthe, Fiorillo, Chiara, Iacomino, Michele, Gaudio, Eugenio, Munell, Francina, Gagliano, Antonella, Jan, Farida, Chimenz, Roberto, Gitto, Eloisa, Iughetti, Lorenzo, Di Rosa, Gabriella, Maghnie, Mohamad, Pettoello-Mantovani, Massimo, Gupta, Neerja, Kabra, Madhulika, Benrhouma, Hanene, Tazir, Meriem, Bottone, Gabriella, Farello, Giovanni, Delvecchio, Maurizio, Di-Donato, Giulio, Obeid, Makram, Bakhtadze, Sophia, Saadi, Nebal W., Miraglia-Del-Giudice, Michele, Maccarone, Rita, Zaki, Maha S., Triki, Chahnez C., Kara, Majdi, Karimiani, Ehsan G., Salih, Ahmed M., Ramenghi, Luca A., Seri, Marco, Di-Falco, Giovanna, Mandarà, Luana, Barrano, Giuseppe, Elisa, Maurizio, Cherubini, Enrico, Operto, Francesca F., Valenzise, Mariella, Cattaneo, Antonino, Zazzeroni, Francesca, Alesse, Edoardo, Matricardi, Sara, Zafar, Faisal, Ullah, Ehsan, Afzal, Erum, Rahman, Fatima, Ahmed, Muhammad M., Parisi, Pasquale, Spalice, Alberto, De Filippo, Maria, Licari, Amelia, Trebbi, Edoardo, Romano, Ferdinando, Heimer, Gali, Al-Khawaja, Issam, Al-Mutairi, Fuad, Alkuraya, Fowzan S., Rizig, Mie, Shashkin, Chingiz, Zharkynbekova, Nazira, Koneyev, Kairgali, Salpietro, Vincenzo, Maroofian, Reza, Wangen, Jamie, Ciolfi, Andrea, Barresi, Sabina, Efthymiou, Stephanie, Lamaze, Angelique, Aughey, Gabriel N., Al Mutairi, Fuad, Rad, Aboulfazl, Rocca, Clarissa, Calì, Elisa, Accogli, Andrea, Zara, Federico, Striano, Pasquale, Mojarrad, Majid, Tariq, Huma, Giacopuzzi, Edoardo, Taylor, Jenny C., Oprea, Gabriela, Skrahina, Volha, Rehman, Khalil Ur, Abd Elmaksoud, Marwa, Bassiony, Mahmoud, El Said, Huda G., Abdel-Hamid, Mohamed S., Al Shalan, Maha, Seo, Gohun, Kim, Sohyun, Lee, Hane, Khang, Rin, Issa, Mahmoud Y., Elbendary, Hasnaa M., Rafat, Karima, Marinakis, Nikolaos M., Traeger-Synodinos, Joanne, Ververi, Athina, Sourmpi, Mara, Eslahi, Atieh, Khadivi Zand, Farhad, Beiraghi Toosi, Mehran, Babaei, Meisam, Jackson, Adam, Bertoli-Avella, Aida, Pagnamenta, Alistair T., Niceta, Marcello, Battini, Roberta, Corsello, Antonio, Leoni, Chiara, Chiarelli, Francesco, Dallapiccola, Bruno, Faqeih, Eissa Ali, Tallur, Krishnaraya K., Alfadhel, Majid, Alobeid, Eman, Maddirevula, Sateesh, Mankad, Kshitij, Banka, Siddharth, Ghayoor-Karimiani, Ehsan, Tartaglia, Marco, Chung, Wendy K., Green, Rachel, Jepson, James E.C., and Houlden, Henry

Published
2024
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12. Novel homozygous mutations in Pakistani families with Charcot–Marie–Tooth disease

Author

Hee Ji Choi, Si On Lim, Byung-Ok Choi, Yu Jin Choi, Shazia Perveen, Aneela khan, Rana Nuzhat, Sumaira Kanwal, Ki Wha Chung, and Jin Hee Park

Subjects
0301 basic medicine, congenital, hereditary, and neonatal diseases and abnormalities, Consanguinity, QH426-470, Biology, Homozygosity, 03 medical and health sciences, 0302 clinical medicine, Charcot-Marie-Tooth Disease, SH3TC2, Gene duplication, Genetics, Humans, Charcot–Marie–Tooth disease (CMT), Pakistan, Allele, Internal medicine, Gene, Genetics (clinical), Exome sequencing, Whole exome sequencing, Middle Aged, Disease gene identification, RC31-1245, Human genetics, nervous system diseases, 030104 developmental biology, 030217 neurology & neurosurgery, Research Article
Abstract

Background Charcot–Marie–Tooth disease (CMT) is a group of genetically and clinically heterogeneous peripheral nervous system disorders. Few studies have identified genetic causes of CMT in the Pakistani patients. Methods This study was performed to identify pathogenic mutations in five consanguineous Pakistani CMT families negative for PMP22 duplication. Genomic screening was performed by application of whole exome sequencing. Results We identified five pathogenic or likely pathogenic homozygous mutations in four genes: c.2599C > T (p.Gln867*) and c.3650G > A (p.Gly1217Asp) in SH3TC2, c.19C > T (p.Arg7*) in HK1, c.247delG (p.Gly83Alafs*44) in REEP1, and c.334G > A (p.Val112Met) in MFN2. These mutations have not been reported in CMT patients. Mutations in SH3TC2, HK1, REEP1, and MFN2 have been reported to be associated with CMT4C, CMT4G, dHMN5B (DSMA5B), and CMT2A, respectively. The genotype–phenotype correlations were confirmed in all the examined families. We also confirmed that both alleles from the homozygous variants originated from a single ancestor using homozygosity mapping. Conclusions This study found five novel mutations as the underlying causes of CMT. Pathogenic mutations in SH3TC2, HK1, and REEP1 have been reported rarely in other populations, suggesting ethnic-specific distribution. This study would be useful for the exact molecular diagnosis and treatment of CMT in Pakistani patients.

Published
2021

13. Novel homozygous mutations in Pakistani families with recessive Charcot-Marie-Tooth disease

Author

Ki Wha Chung, Hee Ji Choi, Aneela khan, Shazia Perveen, Byung-Ok Choi, Rana Nuzhat, Si On Lim, Sumaira Kanwal, Yu Jin Choi, and Jin Hee Park

Subjects
Genetics, Tooth disease, Biology
Abstract

Background Charcot-Marie-Tooth disease (CMT) is a group of genetically and clinically heterogeneous peripheral nervous disorders. Few studies have identified genetic causes in the Pakistani CMT patients. Methods This study was performed to identify pathogenic mutations in five consanguineous Pakistani CMT families negative for PMP22 duplication. Genomic screening was performed by application of whole exome sequencing Results We identified five pathogenic or likely pathogenic homozygous mutations in four genes: c.2599C > T (p.Gln867*) and c.3650G > A (p.Gly1217Asp) in SH3TC2, c.19C > T (p.Arg7*) in HK1, c.247delG (p.Gly83Alafs*44) in REEP1, and c.334G > A (p.Val112Met) in MFN2. All the mutations were not reported in the CMT patients. Mutations in the SH3TC2, HK1, REEP1, and MFN2 have been reported to be implicated to CMT4C, CMT4G, dHMN5B (DSMA5B), and CMT2A, respectively. The genotype-phenotype correlations were confirmed in all the examined families. We also confirmed that both alleles from the homozygous variants were originated from a single founder using homozygosity mapping. Conclusions This study found five novel mutations as the underlying causes of CMT. Pathogenic mutations in SH3TC2, HK1, and REEP1 have been reported rarely in other populations, suggesting ethnic-specific distribution. This study will be useful for the exact molecular diagnosis and treatment in the Pakistani CMT patients.

Published
2021
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14. Bi-allelic JAM2 Variants Lead to Early-Onset Recessive Primary Familial Brain Calcification

Author

Groppa, Stanislav, Karashova, Blagovesta Marinova, Nachbauer, Wolfgang, Boesch, Sylvia, Arning, Larissa, Timmann, Dagmar, Cormand, Bru, Pérez-Dueñas, Belen, Di Rosa, Gabriella, Goraya, Jatinder S., Sultan, Tipu, Mine, Jun, Avdjieva, Daniela, Kathom, Hadil, Tincheva, Radka, Banu, Selina, Pineda-Marfa, Mercedes, Veggiotti, Pierangelo, Ferrari, Michel D., Verrotti, Alberto, Marseglia, Giangluigi, Savasta, Salvatore, García-Silva, Mayte, Ruiz, Alfons Macaya, Garavaglia, Barbara, Borgione, Eugenia, Portaro, Simona, Sanchez, Benigno Monteagudo, Boles, Richard, Papacostas, Savvas, Vikelis, Michail, Papanicolaou, Eleni Zamba, Dardiotis, Efthymios, Maqbool, Shazia, Ibrahim, Shahnaz, Kirmani, Salman, Rana, Nuzhat Noureen, Atawneh, Osama, Koutsis, George, Breza, Marianthi, Mangano, Salvatore, Scuderi, Carmela, Morello, Giovanna, Stojkovic, Tanya, Zollo, Massimi, Heimer, Gali, Dauvilliers, Yves A., Striano, Pasquale, Al-Khawaja, Issam, Al-Mutairi, Fuad, Sherifa, Hamed, Schottlaender, Lucia V., Abeti, Rosella, Jaunmuktane, Zane, Macmillan, Carol, Chelban, Viorica, O’Callaghan, Benjamin, McKinley, John, Maroofian, Reza, Efthymiou, Stephanie, Athanasiou-Fragkouli, Alkyoni, Forbes, Raeburn, Soutar, Marc P.M., Livingston, John H., Kalmar, Bernardett, Swayne, Orlando, Hotton, Gary, Pittman, Alan, Mendes de Oliveira, João Ricardo, de Grandis, Maria, Richard-Loendt, Angela, Launchbury, Francesca, Althonayan, Juri, McDonnell, Gavin, Carr, Aisling, Khan, Suliman, Beetz, Christian, Bisgin, Atil, Tug Bozdogan, Sevcan, Begtrup, Amber, Torti, Erin, Greensmith, Linda, Giunti, Paola, Morrison, Patrick J., Brandner, Sebastian, Aurrand-Lions, Michel, and Houlden, Henry

Published
2020
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15. Bi-allelic JAM2 Variants Lead to Early-Onset Recessive Primary Familial Brain Calcification

Author

Schottlaender, Lucia V., primary, Abeti, Rosella, additional, Jaunmuktane, Zane, additional, Macmillan, Carol, additional, Chelban, Viorica, additional, O’Callaghan, Benjamin, additional, McKinley, John, additional, Maroofian, Reza, additional, Efthymiou, Stephanie, additional, Athanasiou-Fragkouli, Alkyoni, additional, Forbes, Raeburn, additional, Soutar, Marc P.M., additional, Livingston, John H., additional, Kalmar, Bernardett, additional, Swayne, Orlando, additional, Hotton, Gary, additional, Pittman, Alan, additional, Mendes de Oliveira, João Ricardo, additional, de Grandis, Maria, additional, Richard-Loendt, Angela, additional, Launchbury, Francesca, additional, Althonayan, Juri, additional, McDonnell, Gavin, additional, Carr, Aisling, additional, Khan, Suliman, additional, Beetz, Christian, additional, Bisgin, Atil, additional, Tug Bozdogan, Sevcan, additional, Begtrup, Amber, additional, Torti, Erin, additional, Greensmith, Linda, additional, Giunti, Paola, additional, Morrison, Patrick J., additional, Brandner, Sebastian, additional, Aurrand-Lions, Michel, additional, Houlden, Henry, additional, Groppa, Stanislav, additional, Karashova, Blagovesta Marinova, additional, Nachbauer, Wolfgang, additional, Boesch, Sylvia, additional, Arning, Larissa, additional, Timmann, Dagmar, additional, Cormand, Bru, additional, Pérez-Dueñas, Belen, additional, Di Rosa, Gabriella, additional, Goraya, Jatinder S., additional, Sultan, Tipu, additional, Mine, Jun, additional, Avdjieva, Daniela, additional, Kathom, Hadil, additional, Tincheva, Radka, additional, Banu, Selina, additional, Pineda-Marfa, Mercedes, additional, Veggiotti, Pierangelo, additional, Ferrari, Michel D., additional, Verrotti, Alberto, additional, Marseglia, Giangluigi, additional, Savasta, Salvatore, additional, García-Silva, Mayte, additional, Ruiz, Alfons Macaya, additional, Garavaglia, Barbara, additional, Borgione, Eugenia, additional, Portaro, Simona, additional, Sanchez, Benigno Monteagudo, additional, Boles, Richard, additional, Papacostas, Savvas, additional, Vikelis, Michail, additional, Papanicolaou, Eleni Zamba, additional, Dardiotis, Efthymios, additional, Maqbool, Shazia, additional, Ibrahim, Shahnaz, additional, Kirmani, Salman, additional, Rana, Nuzhat Noureen, additional, Atawneh, Osama, additional, Koutsis, George, additional, Breza, Marianthi, additional, Mangano, Salvatore, additional, Scuderi, Carmela, additional, Morello, Giovanna, additional, Stojkovic, Tanya, additional, Zollo, Massimi, additional, Heimer, Gali, additional, Dauvilliers, Yves A., additional, Striano, Pasquale, additional, Al-Khawaja, Issam, additional, Al-Mutairi, Fuad, additional, and Sherifa, Hamed, additional

Published
2020
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16. A homozygous MED11 C-terminal variant causes a lethal neurodegenerative disease

Author

Calì, Elisa, Lin, Sheng-Jia, Rocca, Clarissa, Sahin, Yavuz, Al Shamsi, Aisha, El Chehadeh, Salima, Chaabouni, Myriam, Mankad, Kshitij, Galanaki, Evangelia, Efthymiou, Stephanie, Sudhakar, Sniya, Athanasiou-Fragkouli, Alkyoni, Çelik, Tamer, Narlı, Nejat, Bianca, Sebastiano, Murphy, David, De Carvalho Moreira, Francisco Martins, Hannah, Michael G., Bugiardini, Enrico, Kriouile, Yamna, El Khorassani, Mohamed, Aguennouz, Mhammed, Groppa, Stanislav, Karashova, Blagovesta Marinova, Di Rosa, Gabriella, Goraya, Jatinder S., Sultan, Tipu, Avdjieva, Daniela, Kathom, Hadil, Tincheva, Radka, Banu, Selina, Veggiotti, Pierangelo, Verrotti, Alberto, Savasta, Salvatore, Ruiz, Alfons Macaya, Garavaglia, Barbara, Borgione, Eugenia, Papacostas, Savvas, Compagnoni, Chiara, Piccirilli, Alessandra, Vikelis, Michail, Chelban, Viorica, Kaiyrzhanov, Rauan, Cortese, Andrea, Sullivan, Roisin, Papanicolaou, Eleni Zamba, Dardiotis, Efthymios, Maqbool, Shazia, Ibrahim, Shahnaz, Kirmani, Salman, Rana, Nuzhat Noureen, Atawneh, Osama, Lim, Shen-Yang, Shaikh, Farooq, Scardamaglia, Annarita, Koutsis, George, Mangano, Salvatore, Scuderi, Carmela, Borgione, Eugenia, Morello, Giovanna, Zollo, Massimo, Heimer, Gali, Striano, Pasquale, Al-Khawaja, Issam, Al-Mutairi, Fuad, Alkuraya, Fowzan S., Rizig, Mie, Shashkin, Chingiz, Zharkynbekova, Nazira, Koneyev, Kairgali, Manizha, Ganieva, Isrofilov, Maksud, Guliyeva, Ulviyya, Salayev, Kamran, Khachatryan, Samson, Xiromerisiou, Georgia, Spanaki, Cleanthe, Tucci, Arianna, Fiorillo, Chiara, Rissotto, Federico, Munell, Francina, Gagliano, Antonella, Jan, Farida, Chimenz, Roberto, Gitto, Eloisa, Cuppari, Caterina, Romeo, Carmelo, Magrinelli, Francesca, Gupta, Neerja, Kabra, Madhulika, Benrhouma, Hanene, Tazir, Meriem, Zagaroli, Luca, Caloisi, Claudia, Fabiano, Cecilia, Bottone, Gabriella, Farello, Giovanni, Di Fabio, Sandra, Obeid, Makram, Bakhtadze, Sophia, Saadi, Nebal W., Zaki, Maha S., Triki, Chahnez C., Kara, Majdi, Belcastro, Vincenzo, Specchio, Nicola, Karimiani, Ehsan G., Salih, Ahmed M., Ramenghi, Luca A., David, Emanuele, Curró, Riccardo, Iezzi, Maria Laura, Iapadre, Giulia, Nanni, Giuliana, Scorrano, Giovanna, Fiorile, Maria F., Brancati, Francesco, Di Falco, Giovanna, Mandarà, Luana, Barrano, Giuseppe, Elia, Maurizio, Terrone, Gaetano, Operto, Francesca F., Valenzise, Mariella, Della Rocca, Ylenia, Zazzeroni, Francesca, Alesse, Edoardo, Manti, Filippo, Galosi, Serena, Nardecchia, Francesca, Leuzzi, Vincenzo, Pironti, Erica, Amore, Greta, Ceravolo, Giorgia, Zafar, Faisal, Ullah, Ehsan, Afzal, Erum, Javed, Iram, Rahman, Fatima, Ahmed, Muhammad Mehboob, Parisi, Pasquale, Borgia, Paola, Mangano, Giuseppe D., Chiarelli, Francesco, Genomics, Queen Square, Accogli, Andrea, Petree, Cassidy, Huang, Kevin, Monastiri, Kamel, Edizadeh, Masoud, Nardello, Rosaria, Ognibene, Marzia, De Marco, Patrizia, Ruggieri, Martino, Zara, Federico, Striano, Pasquale, Şahin, Yavuz, Al-Gazali, Lihadh, Abi Warde, Marie Therese, Gerard, Benedicte, Zifarelli, Giovanni, Beetz, Christian, Fortuna, Sara, Soler, Miguel, Valente, Enza Maria, Varshney, Gaurav, Maroofian, Reza, Salpietro, Vincenzo, and Houlden, Henry

Abstract

The mediator (MED) multisubunit-complex modulates the activity of the transcriptional machinery, and genetic defects in different MED subunits (17, 20, 27) have been implicated in neurologic diseases. In this study, we identified a recurrent homozygous variant in MED11(c.325C>T; p.Arg109Ter) in 7 affected individuals from 5 unrelated families.

Published
2022
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17. Inhibition of G-protein signalling in cardiac dysfunction of intellectual developmental disorder with cardiac arrhythmia (IDDCA) syndrome.

Author

De Nittis, Pasquelena, Efthymiou, Stephanie, Sarre, Alexandre, Guex, Nicolas, Chrast, Jacqueline, Putoux, Audrey, Sultan, Tipu, Alvi, Javeria Raza, ur Rahman, Zia, Zafar, Faisal, Rana, Nuzhat, Rahman, Fatima, Anwar, Najwa, Maqbool, Shazia, Zaki, Maha S., Gleeson, Joseph G., Murphy, David, Galehdari, Hamid, Shariati, Gholamreza, and Mazaheri, Neda

Abstract

Background Pathogenic variants of GNB5 encoding the β5 subunit of the guanine nucleotide-binding protein cause IDDCA syndrome, an autosomal recessive neurodevelopmental disorder associated with cognitive disability and cardiac arrhythmia, particularly severe bradycardia. Methods We used echocardiography and telemetric ECG recordings to investigate consequences of Gnb5 loss in mouse. Results We delineated a key role of Gnb5 in heart sinus conduction and showed that Gnb5-inhibitory signalling is essential for parasympathetic control of heart rate (HR) and maintenance of the sympathovagal balance. Gnb5-/- mice were smaller and had a smaller heart than Gnb5+/+ and Gnb5+/-, but exhibited better cardiac function. Lower autonomic nervous system modulation through diminished parasympathetic control and greater sympathetic regulation resulted in a higher baseline HR in Gnb5-/- mice. In contrast, Gnb5-/- mice exhibited profound bradycardia on treatment with carbachol, while sympathetic modulation of the cardiac stimulation was not altered. Concordantly, transcriptome study pinpointed altered expression of genes involved in cardiac muscle contractility in atria and ventricles of knocked-out mice. Homozygous Gnb5 loss resulted in significantly higher frequencies of sinus arrhythmias. Moreover, we described 13 affected individuals, increasing the IDDCA cohort to 44 patients. Conclusions Our data demonstrate that loss of negative regulation of the inhibitory G-protein signalling causes HR perturbations in Gnb5-/- mice, an effect mainly driven by impaired parasympathetic activity. We anticipate that unravelling the mechanism of Gnb5 signalling in the autonomic control of the heart will pave the way for future drug screening. [ABSTRACT FROM AUTHOR]

Published
2021
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18. Loss of UGP2 in brain leads to a severe epileptic encephalopathy, emphasizing that bi-allelic isoform-specific start-loss mutations of essential genes can cause genetic diseases

Author

Perenthaler, Elena, primary, Nikoncuk, Anita, additional, Yousefi, Soheil, additional, Berdowski, Woutje M., additional, Alsagob, Maysoon, additional, Capo, Ivan, additional, van der Linde, Herma C., additional, van den Berg, Paul, additional, Jacobs, Edwin H., additional, Putar, Darija, additional, Ghazvini, Mehrnaz, additional, Aronica, Eleonora, additional, van IJcken, Wilfred F. J., additional, de Valk, Walter G., additional, Medici-van den Herik, Evita, additional, van Slegtenhorst, Marjon, additional, Brick, Lauren, additional, Kozenko, Mariya, additional, Kohler, Jennefer N., additional, Bernstein, Jonathan A., additional, Monaghan, Kristin G., additional, Begtrup, Amber, additional, Torene, Rebecca, additional, Al Futaisi, Amna, additional, Al Murshedi, Fathiya, additional, Mani, Renjith, additional, Al Azri, Faisal, additional, Kamsteeg, Erik-Jan, additional, Mojarrad, Majid, additional, Eslahi, Atieh, additional, Khazaei, Zaynab, additional, Darmiyan, Fateme Massinaei, additional, Doosti, Mohammad, additional, Karimiani, Ehsan Ghayoor, additional, Vandrovcova, Jana, additional, Zafar, Faisal, additional, Rana, Nuzhat, additional, Kandaswamy, Krishna K., additional, Hertecant, Jozef, additional, Bauer, Peter, additional, AlMuhaizea, Mohammed A., additional, Salih, Mustafa A., additional, Aldosary, Mazhor, additional, Almass, Rawan, additional, Al-Quait, Laila, additional, Qubbaj, Wafa, additional, Coskun, Serdar, additional, Alahmadi, Khaled O., additional, Hamad, Muddathir H. A., additional, Alwadaee, Salem, additional, Awartani, Khalid, additional, Dababo, Anas M., additional, Almohanna, Futwan, additional, Colak, Dilek, additional, Dehghani, Mohammadreza, additional, Mehrjardi, Mohammad Yahya Vahidi, additional, Gunel, Murat, additional, Ercan-Sencicek, A. Gulhan, additional, Passi, Gouri Rao, additional, Cheema, Huma Arshad, additional, Efthymiou, Stephanie, additional, Houlden, Henry, additional, Bertoli-Avella, Aida M., additional, Brooks, Alice S., additional, Retterer, Kyle, additional, Maroofian, Reza, additional, Kaya, Namik, additional, van Ham, Tjakko J., additional, and Barakat, Tahsin Stefan, additional

Published
2019
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19. AMPA receptor GluA2 subunit defects are a cause of neurodevelopmental disorders

Author

Salpietro Vincenzo, Dixon Christine L., Guo Hui, Bello Oscar D., Vandrovcova Jana, Efthymiou Stephanie, Maroofian Reza, Heimer Gali, Burglen Lydie, Valence Stephanie, Torti Erin, Hacke Moritz, Rankin Julia, Tariq Huma, Colin Estelle, Procaccio Vincent, Striano Pasquale, Mankad Kshitij, Lieb Andreas, Chen Sharon, Pisani Laura, Bettencourt Conceicao, Mannikko Roope, Manole Andreea, Brusco Alfredo, Grosso Enrico, Ferrero Giovanni Battista, Armstrong-Moron Judith, Gueden Sophie, Bar-Yosef Omer, Tzadok Michal, Monaghan Kristin G., Santiago-Sim Teresa, Person Richard E., Cho Megan T., Willaert Rebecca, Yoo Yongjin, Chae Jong-Hee, Quan Yingting, Wu Huidan, Wang Tianyun, Bernier Raphael A., Xia Kun, Blesson Alyssa, Jain Mahim, Motazacker Mohammad M., Jaeger Bregje, Schneider Amy L., Boysen Katja, Muir Alison M., Myers Candace T., Gavrilova Ralitza H., Gunderson Lauren, Schultz-Rogers Laura, Klee Eric W., Dyment David, Osmond Matthew, Parellada Mara, Llorente Cloe, Gonzalez-Penas Javier, Carracedo Angel, Van Haeringen Arie, Ruivenkamp Claudia, Nava Caroline, Heron Delphine, Nardello Rosaria, Iacomino Michele, Minetti Carlo, Skabar Aldo, Fabretto Antonella, Chez Michael, Tsai Anne, Fassi Emily, Shinawi Marwan, Constantino John N., De Zorzi Rita, Fortuna Sara, Kok Fernando, Keren Boris, Bonneau Dominique, Choi Murim, Benzeev Bruria, Zara Federico, Mefford Heather C., Scheffer Ingrid E., Clayton-Smith Jill, Macaya Alfons, Rothman James E., Eichler Evan E., Kullmann Dimitri M., Houlden Henry, Raspall-Chaure Miquel, Hanna Michael G., Bugiardini Enrico, Hostettler Isabel, O'Callaghan Benjamin, Khan Alaa, Cortese Andrea, O'Connor Emer, Yau Wai Y., Bourinaris Thomas, Kaiyrzhanov Rauan, Chelban Viorica, Madej Monika, Diana Maria C., Vari Maria S., Pedemonte Marina, Bruno Claudio, Balagura Ganna, Scala Marcello, Fiorillo Chiara, Nobili Lino, Malintan Nancy T., Zanetti Maria N., Krishnakumar Shyam S., Lignani Gabriele, Jepson James E. C., Broda Paolo, Baldassari Simona, Rossi Pia, Fruscione Floriana, Madia Francesca, Traverso Monica, De-Marco Patrizia, Perez-Duenas Belen, Munell Francina, Kriouile Yamna, El-Khorassani Mohamed, Karashova Blagovesta, Avdjieva Daniela, Kathom Hadil, Tincheva Radka, Van-Maldergem Lionel, Nachbauer Wolfgang, Boesch Sylvia, Gagliano Antonella, Amadori Elisabetta, Goraya Jatinder S., Sultan Tipu, Kirmani Salman, Ibrahim Shahnaz, Jan Farida, Mine, Jun, Banu Selina, Veggiotti Pierangelo, Zuccotti Gian V, Ferrari Michel D., Van Den Maagdenberg Arn M. J., Verrotti Alberto, Marseglia Gian L., Savasta Salvatore, Soler Miguel A., Scuderi Carmela, Borgione Eugenia, Chimenz Roberto, Gitto Eloisa, Dipasquale Valeria, Sallemi Alessia, Fusco Monica, Cuppari Caterina, Cutrupi Maria C., Ruggieri Martino, Cama Armando, Capra Valeria, Mencacci Niccolo E., Boles Richard, Gupta Neerja, Kabra Madhulika, Papacostas Savvas, Zamba-Papanicolaou Eleni, Dardiotis Efthymios, Maqbool Shazia, Rana Nuzhat, Atawneh Osama, Lim Shen Y., Shaikh Farooq, Koutsis George, Breza Marianthi, Coviello Domenico A., Dauvilliers Yves A., AlKhawaja Issam, AlKhawaja Mariam, Al-Mutairi Fuad, Stojkovic Tanya, Ferrucci Veronica, Zollo Massimo, Alkuraya Fowzan S., Kinali Maria, Sherifa Hamed, Benrhouma Hanene, Turki Ilhem B. Y., Tazir Meriem, Obeid Makram, Bakhtadze Sophia, Saadi Nebal W., Zaki Maha S., Triki Chahnez C., Benfenati Fabio, Gustincich Stefano, Kara Majdi, Belcastro Vincenzo, Specchio Nicola, Capovilla Giuseppe, Karimiani Ehsan G., Salih Ahmed M., Okubadejo Njideka U., Ojo Oluwadamilola O., Oshinaike Olajumoke O., Oguntunde Olapeju, Wahab Kolawole, Bello Abiodun H., Abubakar Sanni, Obiabo Yahaya, Nwazor Ernest, Ekenze Oluchi, Williams Uduak, Iyagba Alagoma, Taiwo Lolade, Komolafe Morenikeji, Senkevich Konstantin, Shashkin Chingiz, Zharkynbekova Nazira, Koneyev Kairgali, Manizha Ganieva, Isrofilov Maksud, Guliyeva Ulviyya, Salayev Kamran, Khachatryan Samson, Rossi Salvatore, Silvestri Gabriella, Haridy Nourelhoda, Ramenghi Luca A., Xiromerisiou Georgia, David Emanuele, Aguennouz Mhammed, Fidani Liana, Spanaki Cleanthe, Tucci Arianna, Salpietro Vincenzo, Dixon Christine L., Guo Hui, Bello Oscar D., Vandrovcova Jana, Efthymiou Stephanie, Maroofian Reza, Heimer Gali, Burglen Lydie, Valence Stephanie, Torti Erin, Hacke Moritz, Rankin Julia, Tariq Huma, Colin Estelle, Procaccio Vincent, Striano Pasquale, Mankad Kshitij, Lieb Andreas, Chen Sharon, Pisani Laura, Bettencourt Conceicao, Mannikko Roope, Manole Andreea, Brusco Alfredo, Grosso Enrico, Ferrero Giovanni Battista, Armstrong-Moron Judith, Gueden Sophie, Bar-Yosef Omer, Tzadok Michal, Monaghan Kristin G., Santiago-Sim Teresa, Person Richard E., Cho Megan T., Willaert Rebecca, Yoo Yongjin, Chae Jong-Hee, Quan Yingting, Wu Huidan, Wang Tianyun, Bernier Raphael A., Xia Kun, Blesson Alyssa, Jain Mahim, Motazacker Mohammad M., Jaeger Bregje, Schneider Amy L., Boysen Katja, Muir Alison M., Myers Candace T., Gavrilova Ralitza H., Gunderson Lauren, Schultz-Rogers Laura, Klee Eric W., Dyment David, Osmond Matthew, Parellada Mara, Llorente Cloe, Gonzalez-Penas Javier, Carracedo Angel, Van Haeringen Arie, Ruivenkamp Claudia, Nava Caroline, Heron Delphine, Nardello Rosaria, Iacomino Michele, Minetti Carlo, Skabar Aldo, Fabretto Antonella, Chez Michael, Tsai Anne, Fassi Emily, Shinawi Marwan, Constantino John N., De Zorzi Rita, Fortuna Sara, Kok Fernando, Keren Boris, Bonneau Dominique, Choi Murim, Benzeev Bruria, Zara Federico, Mefford Heather C., Scheffer Ingrid E., Clayton-Smith Jill, Macaya Alfons, Rothman James E., Eichler Evan E., Kullmann Dimitri M., Houlden Henry, Raspall-Chaure Miquel, Hanna Michael G., Bugiardini Enrico, Hostettler Isabel, O'Callaghan Benjamin, Khan Alaa, Cortese Andrea, O'Connor Emer, Yau Wai Y., Bourinaris Thomas, Kaiyrzhanov Rauan, Chelban Viorica, Madej Monika, Diana Maria C., Vari Maria S., Pedemonte Marina, Bruno Claudio, Balagura Ganna, Scala Marcello, Fiorillo Chiara, Nobili Lino, Malintan Nancy T., Zanetti Maria N., Krishnakumar Shyam S., Lignani Gabriele, Jepson James E. C., Broda Paolo, Baldassari Simona, Rossi Pia, Fruscione Floriana, Madia Francesca, Traverso Monica, De-Marco Patrizia, Perez-Duenas Belen, Munell Francina, Kriouile Yamna, El-Khorassani Mohamed, Karashova Blagovesta, Avdjieva Daniela, Kathom Hadil, Tincheva Radka, Van-Maldergem Lionel, Nachbauer Wolfgang, Boesch Sylvia, Gagliano Antonella, Amadori Elisabetta, Goraya Jatinder S., Sultan Tipu, Kirmani Salman, Ibrahim Shahnaz, Jan Farida, Mine, Jun, Banu Selina, Veggiotti Pierangelo, Zuccotti Gian V, Ferrari Michel D., Van Den Maagdenberg Arn M. J., Verrotti Alberto, Marseglia Gian L., Savasta Salvatore, Soler Miguel A., Scuderi Carmela, Borgione Eugenia, Chimenz Roberto, Gitto Eloisa, Dipasquale Valeria, Sallemi Alessia, Fusco Monica, Cuppari Caterina, Cutrupi Maria C., Ruggieri Martino, Cama Armando, Capra Valeria, Mencacci Niccolo E., Boles Richard, Gupta Neerja, Kabra Madhulika, Papacostas Savvas, Zamba-Papanicolaou Eleni, Dardiotis Efthymios, Maqbool Shazia, Rana Nuzhat, Atawneh Osama, Lim Shen Y., Shaikh Farooq, Koutsis George, Breza Marianthi, Coviello Domenico A., Dauvilliers Yves A., AlKhawaja Issam, AlKhawaja Mariam, Al-Mutairi Fuad, Stojkovic Tanya, Ferrucci Veronica, Zollo Massimo, Alkuraya Fowzan S., Kinali Maria, Sherifa Hamed, Benrhouma Hanene, Turki Ilhem B. Y., Tazir Meriem, Obeid Makram, Bakhtadze Sophia, Saadi Nebal W., Zaki Maha S., Triki Chahnez C., Benfenati Fabio, Gustincich Stefano, Kara Majdi, Belcastro Vincenzo, Specchio Nicola, Capovilla Giuseppe, Karimiani Ehsan G., Salih Ahmed M., Okubadejo Njideka U., Ojo Oluwadamilola O., Oshinaike Olajumoke O., Oguntunde Olapeju, Wahab Kolawole, Bello Abiodun H., Abubakar Sanni, Obiabo Yahaya, Nwazor Ernest, Ekenze Oluchi, Williams Uduak, Iyagba Alagoma, Taiwo Lolade, Komolafe Morenikeji, Senkevich Konstantin, Shashkin Chingiz, Zharkynbekova Nazira, Koneyev Kairgali, Manizha Ganieva, Isrofilov Maksud, Guliyeva Ulviyya, Salayev Kamran, Khachatryan Samson, Rossi Salvatore, Silvestri Gabriella, Haridy Nourelhoda, Ramenghi Luca A., Xiromerisiou Georgia, David Emanuele, Aguennouz Mhammed, Fidani Liana, Spanaki Cleanthe, and Tucci Arianna

Published
2019

20. AMPA receptor GluA2 subunit defects are a cause of neurodevelopmental disorders

Author

Vincenzo, Salpietro, Christine L, Dixon, Hui, Guo, Oscar D, Bello, Jana, Vandrovcova, Stephanie, Efthymiou, Reza, Maroofian, Gali, Heimer, Lydie, Burglen, Stephanie, Valence, Erin, Torti, Moritz, Hacke, Julia, Rankin, Huma, Tariq, Estelle, Colin, Vincent, Procaccio, Pasquale, Striano, Kshitij, Mankad, Andreas, Lieb, Sharon, Chen, Laura, Pisani, Conceicao, Bettencourt, Roope, Männikkö, Andreea, Manole, Alfredo, Brusco, Enrico, Grosso, Giovanni Battista, Ferrero, Judith, Armstrong-Moron, Sophie, Gueden, Omer, Bar-Yosef, Michal, Tzadok, Kristin G, Monaghan, Teresa, Santiago-Sim, Richard E, Person, Megan T, Cho, Rebecca, Willaert, Yongjin, Yoo, Jong-Hee, Chae, Yingting, Quan, Huidan, Wu, Tianyun, Wang, Raphael A, Bernier, Kun, Xia, Alyssa, Blesson, Mahim, Jain, Mohammad M, Motazacker, Bregje, Jaeger, Amy L, Schneider, Katja, Boysen, Alison M, Muir, Candace T, Myer, Ralitza H, Gavrilova, Lauren, Gunderson, Laura, Schultz-Roger, Eric W, Klee, David, Dyment, Matthew, Osmond, Mara, Parellada, Cloe, Llorente, Javier, Gonzalez-Peña, Angel, Carracedo, Arie, Van Haeringen, Claudia, Ruivenkamp, Caroline, Nava, Delphine, Heron, Rosaria, Nardello, Michele, Iacomino, Carlo, Minetti, Aldo, Skabar, Antonella, Fabretto, Hanna, Michael G., Bugiardini, Enrico, Hostettler, Isabel, O’Callaghan, Benjamin, Khan, Alaa, Cortese, Andrea, O’Connor, Emer, Yau, Wai Y., Bourinaris, Thoma, Kaiyrzhanov, Rauan, Chelban, Viorica, Madej, Monika, Diana, Maria C., Vari, Maria S., Pedemonte, Marina, Bruno, Claudio, Balagura, Ganna, Scala, Marcello, Fiorillo, Chiara, Nobili, Lino, Malintan, Nancy T., Zanetti, Maria N., Krishnakumar, Shyam S., Lignani, Gabriele, Jepson, James E. C., Broda, Paolo, Baldassari, Simona, Rossi, Pia, Fruscione, Floriana, Madia, Francesca, Traverso, Monica, De-Marco, Patrizia, Pérez-Dueñas, Belen, Munell, Francina, Kriouile, Yamna, El-Khorassani, Mohamed, Karashova, Blagovesta, Avdjieva, Daniela, Kathom, Hadil, Tincheva, Radka, Van-Maldergem, Lionel, Nachbauer, Wolfgang, Boesch, Sylvia, Gagliano, Antonella, Amadori, Elisabetta, Goraya, Jatinder S., Sultan, Tipu, Kirmani, Salman, Ibrahim, Shahnaz, Jan, Farida, Mine, Jun, Banu, Selina, Veggiotti, Pierangelo, Zuccotti, Gian V., Ferrari, Michel D., Van Den Maagdenberg, Arn M. J., Verrotti, Alberto, Marseglia, Gian L., Savasta, Salvatore, Soler, Miguel A., Scuderi, Carmela, Borgione, Eugenia, Chimenz, Roberto, Gitto, Eloisa, Dipasquale, Valeria, Sallemi, Alessia, Fusco, Monica, Cuppari, Caterina, Cutrupi, Maria C., Ruggieri, Martino, Cama, Armando, Capra, Valeria, Mencacci, Niccolò E., Boles, Richard, Gupta, Neerja, Kabra, Madhulika, Papacostas, Savva, Zamba-Papanicolaou, Eleni, Dardiotis, Efthymio, Maqbool, Shazia, Rana, Nuzhat, Atawneh, Osama, Lim, Shen Y., Shaikh, Farooq, Koutsis, George, Breza, Marianthi, Coviello, Domenico A., Dauvilliers, Yves A., Alkhawaja, Issam, Alkhawaja, Mariam, Al-Mutairi, Fuad, Stojkovic, Tanya, Ferrucci, Veronica, Zollo, Massimo, Alkuraya, Fowzan S., Kinali, Maria, Sherifa, Hamed, Benrhouma, Hanene, Turki, Ilhem B. Y., Tazir, Meriem, Obeid, Makram, Bakhtadze, Sophia, Saadi, Nebal W., Zaki, Maha S., Triki, Chahnez C., Benfenati, Fabio, Gustincich, Stefano, Kara, Majdi, Belcastro, Vincenzo, Specchio, Nicola, Capovilla, Giuseppe, Karimiani, Ehsan G., Salih, Ahmed M., Okubadejo, Njideka U., Ojo, Oluwadamilola O., Oshinaike, Olajumoke O., Oguntunde, Olapeju, Wahab, Kolawole, Bello, Abiodun H., Abubakar, Sanni, Obiabo, Yahaya, Nwazor, Ernest, Ekenze, Oluchi, Williams, Uduak, Iyagba, Alagoma, Taiwo, Lolade, Komolafe, Morenikeji, Senkevich, Konstantin, Shashkin, Chingiz, Zharkynbekova, Nazira, Koneyev, Kairgali, Manizha, Ganieva, Isrofilov, Maksud, Guliyeva, Ulviyya, Salayev, Kamran, Khachatryan, Samson, Rossi, Salvatore, Silvestri, Gabriella, Haridy, Nourelhoda, Ramenghi, Luca A., Xiromerisiou, Georgia, David, Emanuele, Aguennouz, Mhammed, Fidani, Liana, Spanaki &amp, Cleanthe, Tucci, Arianna, Miquel, Raspall-Chaure, Michael, Chez, Anne, Tsai, Emily, Fassi, Marwan, Shinawi, John N, Constantino, Rita, De Zorzi, Sara, Fortuna, Fernando, Kok, Boris, Keren, Dominique, Bonneau, Murim, Choi, Bruria, Benzeev, Federico, Zara, Heather C, Mefford, Ingrid E, Scheffer, Jill, Clayton-Smith, Alfons, Macaya, James E, Rothman, Evan E, Eichler, Dimitri M, Kullmann, Henry, Houlden, Salvatore Rossi, Gabriella Silvestri (ORCID:0000-0002-1950-1468), Vincenzo, Salpietro, Christine L, Dixon, Hui, Guo, Oscar D, Bello, Jana, Vandrovcova, Stephanie, Efthymiou, Reza, Maroofian, Gali, Heimer, Lydie, Burglen, Stephanie, Valence, Erin, Torti, Moritz, Hacke, Julia, Rankin, Huma, Tariq, Estelle, Colin, Vincent, Procaccio, Pasquale, Striano, Kshitij, Mankad, Andreas, Lieb, Sharon, Chen, Laura, Pisani, Conceicao, Bettencourt, Roope, Männikkö, Andreea, Manole, Alfredo, Brusco, Enrico, Grosso, Giovanni Battista, Ferrero, Judith, Armstrong-Moron, Sophie, Gueden, Omer, Bar-Yosef, Michal, Tzadok, Kristin G, Monaghan, Teresa, Santiago-Sim, Richard E, Person, Megan T, Cho, Rebecca, Willaert, Yongjin, Yoo, Jong-Hee, Chae, Yingting, Quan, Huidan, Wu, Tianyun, Wang, Raphael A, Bernier, Kun, Xia, Alyssa, Blesson, Mahim, Jain, Mohammad M, Motazacker, Bregje, Jaeger, Amy L, Schneider, Katja, Boysen, Alison M, Muir, Candace T, Myer, Ralitza H, Gavrilova, Lauren, Gunderson, Laura, Schultz-Roger, Eric W, Klee, David, Dyment, Matthew, Osmond, Mara, Parellada, Cloe, Llorente, Javier, Gonzalez-Peña, Angel, Carracedo, Arie, Van Haeringen, Claudia, Ruivenkamp, Caroline, Nava, Delphine, Heron, Rosaria, Nardello, Michele, Iacomino, Carlo, Minetti, Aldo, Skabar, Antonella, Fabretto, Hanna, Michael G., Bugiardini, Enrico, Hostettler, Isabel, O’Callaghan, Benjamin, Khan, Alaa, Cortese, Andrea, O’Connor, Emer, Yau, Wai Y., Bourinaris, Thoma, Kaiyrzhanov, Rauan, Chelban, Viorica, Madej, Monika, Diana, Maria C., Vari, Maria S., Pedemonte, Marina, Bruno, Claudio, Balagura, Ganna, Scala, Marcello, Fiorillo, Chiara, Nobili, Lino, Malintan, Nancy T., Zanetti, Maria N., Krishnakumar, Shyam S., Lignani, Gabriele, Jepson, James E. C., Broda, Paolo, Baldassari, Simona, Rossi, Pia, Fruscione, Floriana, Madia, Francesca, Traverso, Monica, De-Marco, Patrizia, Pérez-Dueñas, Belen, Munell, Francina, Kriouile, Yamna, El-Khorassani, Mohamed, Karashova, Blagovesta, Avdjieva, Daniela, Kathom, Hadil, Tincheva, Radka, Van-Maldergem, Lionel, Nachbauer, Wolfgang, Boesch, Sylvia, Gagliano, Antonella, Amadori, Elisabetta, Goraya, Jatinder S., Sultan, Tipu, Kirmani, Salman, Ibrahim, Shahnaz, Jan, Farida, Mine, Jun, Banu, Selina, Veggiotti, Pierangelo, Zuccotti, Gian V., Ferrari, Michel D., Van Den Maagdenberg, Arn M. J., Verrotti, Alberto, Marseglia, Gian L., Savasta, Salvatore, Soler, Miguel A., Scuderi, Carmela, Borgione, Eugenia, Chimenz, Roberto, Gitto, Eloisa, Dipasquale, Valeria, Sallemi, Alessia, Fusco, Monica, Cuppari, Caterina, Cutrupi, Maria C., Ruggieri, Martino, Cama, Armando, Capra, Valeria, Mencacci, Niccolò E., Boles, Richard, Gupta, Neerja, Kabra, Madhulika, Papacostas, Savva, Zamba-Papanicolaou, Eleni, Dardiotis, Efthymio, Maqbool, Shazia, Rana, Nuzhat, Atawneh, Osama, Lim, Shen Y., Shaikh, Farooq, Koutsis, George, Breza, Marianthi, Coviello, Domenico A., Dauvilliers, Yves A., Alkhawaja, Issam, Alkhawaja, Mariam, Al-Mutairi, Fuad, Stojkovic, Tanya, Ferrucci, Veronica, Zollo, Massimo, Alkuraya, Fowzan S., Kinali, Maria, Sherifa, Hamed, Benrhouma, Hanene, Turki, Ilhem B. Y., Tazir, Meriem, Obeid, Makram, Bakhtadze, Sophia, Saadi, Nebal W., Zaki, Maha S., Triki, Chahnez C., Benfenati, Fabio, Gustincich, Stefano, Kara, Majdi, Belcastro, Vincenzo, Specchio, Nicola, Capovilla, Giuseppe, Karimiani, Ehsan G., Salih, Ahmed M., Okubadejo, Njideka U., Ojo, Oluwadamilola O., Oshinaike, Olajumoke O., Oguntunde, Olapeju, Wahab, Kolawole, Bello, Abiodun H., Abubakar, Sanni, Obiabo, Yahaya, Nwazor, Ernest, Ekenze, Oluchi, Williams, Uduak, Iyagba, Alagoma, Taiwo, Lolade, Komolafe, Morenikeji, Senkevich, Konstantin, Shashkin, Chingiz, Zharkynbekova, Nazira, Koneyev, Kairgali, Manizha, Ganieva, Isrofilov, Maksud, Guliyeva, Ulviyya, Salayev, Kamran, Khachatryan, Samson, Rossi, Salvatore, Silvestri, Gabriella, Haridy, Nourelhoda, Ramenghi, Luca A., Xiromerisiou, Georgia, David, Emanuele, Aguennouz, Mhammed, Fidani, Liana, Spanaki &amp, Cleanthe, Tucci, Arianna, Miquel, Raspall-Chaure, Michael, Chez, Anne, Tsai, Emily, Fassi, Marwan, Shinawi, John N, Constantino, Rita, De Zorzi, Sara, Fortuna, Fernando, Kok, Boris, Keren, Dominique, Bonneau, Murim, Choi, Bruria, Benzeev, Federico, Zara, Heather C, Mefford, Ingrid E, Scheffer, Jill, Clayton-Smith, Alfons, Macaya, James E, Rothman, Evan E, Eichler, Dimitri M, Kullmann, Henry, Houlden, Salvatore Rossi, and Gabriella Silvestri (ORCID:0000-0002-1950-1468)

Abstract

AMPA receptors (AMPARs) are tetrameric ligand-gated channels made up of combinations of GluA1-4 subunits encoded by GRIA1-4 genes. GluA2 has an especially important role because, following post-transcriptional editing at the Q607 site, it renders heteromultimeric AMPARs Ca2+-impermeable, with a linear relationship between current and trans-membrane voltage. Here, we report heterozygous de novo GRIA2 mutations in 28 unrelated patients with intellectual disability (ID) and neurodevelopmental abnormalities including autism spectrum disorder (ASD), Rett syndrome-like features, and seizures or developmental epileptic encephalopathy (DEE). In functional expression studies, mutations lead to a decrease in agonist-evoked current mediated by mutant subunits compared to wild-type channels. When GluA2 subunits are co-expressed with GluA1, most GRIA2 mutations cause a decreased current amplitude and some also affect voltage rectification. Our results show that de-novo variants in GRIA2 can cause neurodevelopmental disorders, complementing evidence that other genetic causes of ID, ASD and DEE also disrupt glutamatergic synaptic transmission.

Published
2019

21. TMX2 Is a Crucial Regulator of Cellular Redox State, and Its Dysfunction Causes Severe Brain Developmental Abnormalities

Author

Genetica Klinische Genetica, Brain, Child Health, MS Neonatologie, Pathologie Pathologen staf, Cancer, MS Radiologie, Circulatory Health, Vandervore, Laura V, Schot, Rachel, Milanese, Chiara, Smits, Daphne J, Kasteleijn, Esmee, Fry, Andrew E, Pilz, Daniela T, Brock, Stefanie, Börklü-Yücel, Esra, Post, Marco, Bahi-Buisson, Nadia, Sánchez-Soler, María José, van Slegtenhorst, Marjon, Keren, Boris, Afenjar, Alexandra, Coury, Stephanie A, Tan, Wen-Hann, Oegema, Renske, de Vries, Linda S, Fawcett, Katherine A, Nikkels, Peter G J, Bertoli-Avella, Aida, Al Hashem, Amal, Alwabel, Abdulmalik A, Tlili-Graiess, Kalthoum, Efthymiou, Stephanie, Zafar, Faisal, Rana, Nuzhat, Bibi, Farah, Houlden, Henry, Maroofian, Reza, Person, Richard E, Crunk, Amy, Savatt, Juliann M, Turner, Lisbeth, Doosti, Mohammad, Karimiani, Ehsan Ghayoor, Saadi, Nebal Waill, Akhondian, Javad, Lequin, Maarten H, Kayserili, Hülya, van der Spek, Peter J, Jansen, Anna C, Kros, Johan M, Verdijk, Robert M, Milošević, Nataša Jovanov, Fornerod, Maarten, Mastroberardino, Pier Giorgio, Mancini, Grazia M S, Genetica Klinische Genetica, Brain, Child Health, MS Neonatologie, Pathologie Pathologen staf, Cancer, MS Radiologie, Circulatory Health, Vandervore, Laura V, Schot, Rachel, Milanese, Chiara, Smits, Daphne J, Kasteleijn, Esmee, Fry, Andrew E, Pilz, Daniela T, Brock, Stefanie, Börklü-Yücel, Esra, Post, Marco, Bahi-Buisson, Nadia, Sánchez-Soler, María José, van Slegtenhorst, Marjon, Keren, Boris, Afenjar, Alexandra, Coury, Stephanie A, Tan, Wen-Hann, Oegema, Renske, de Vries, Linda S, Fawcett, Katherine A, Nikkels, Peter G J, Bertoli-Avella, Aida, Al Hashem, Amal, Alwabel, Abdulmalik A, Tlili-Graiess, Kalthoum, Efthymiou, Stephanie, Zafar, Faisal, Rana, Nuzhat, Bibi, Farah, Houlden, Henry, Maroofian, Reza, Person, Richard E, Crunk, Amy, Savatt, Juliann M, Turner, Lisbeth, Doosti, Mohammad, Karimiani, Ehsan Ghayoor, Saadi, Nebal Waill, Akhondian, Javad, Lequin, Maarten H, Kayserili, Hülya, van der Spek, Peter J, Jansen, Anna C, Kros, Johan M, Verdijk, Robert M, Milošević, Nataša Jovanov, Fornerod, Maarten, Mastroberardino, Pier Giorgio, and Mancini, Grazia M S

Published
2019

22. PDXK mutations cause polyneuropathy responsive to pyridoxal 5′‐phosphate supplementation

Author

Chelban, Viorica, Wilson, Matthew P., Warman Chardon, Jodi, Vandrovcova, Jana, Zanetti, M. Natalia, Zamba‐Papanicolaou, Eleni, Efthymiou, Stephanie, Pope, Simon, Conte, Maria R., Abis, Giancarlo, Liu, Yo‐Tsen, Tribollet, Eloise, Haridy, Nourelhoda A., Botía, Juan A., Ryten, Mina, Nicolaou, Paschalis, Minaidou, Anna, Christodoulou, Kyproula, Kernohan, Kristin D., Eaton, Alison, Osmond, Matthew, Ito, Yoko, Bourque, Pierre, Jepson, James E. C., Bello, Oscar, Bremner, Fion, Cordivari, Carla, Reilly, Mary M., Foiani, Martha, Heslegrave, Amanda, Zetterberg, Henrik, Heales, Simon J. R., Wood, Nicholas W., Rothman, James E., Boycott, Kym M., Mills, Philippa B., Clayton, Peter T., Houlden, Henry, Kriouile, Yamna, Khorassani, Mohamed El, Aguennouz, Mhammed, Groppa, Stanislav, Marinova Karashova, Blagovesta, Van Maldergem, Lionel, Nachbauer, Wolfgang, Boesch, Sylvia, Arning, Larissa, Timmann, Dagmar, Cormand, Bru, Pérez‐Dueñas, Belen, Di Rosa, Gabriella, Goraya, Jatinder S., Sultan, Tipu, Mine, Jun, Avdjieva, Daniela, Kathom, Hadil, Tincheva, Radka, Banu, Selina, Pineda‐Marfa, Mercedes, Veggiotti, Pierangelo, Ferrari, Michel D., van den Maagdenberg, Arn M J M, Verrotti, Alberto, Marseglia, Giangluigi, Savasta, Salvatore, García‐Silva, Mayte, Ruiz, Alfons Macaya, Garavaglia, Barbara, Borgione, Eugenia, Portaro, Simona, Sanchez, Benigno Monteagudo, Boles, Richard, Papacostas, Savvas, Vikelis, Michail, Rothman, James, Giunti, Paola, Salpietro, Vincenzo, Oconnor, Emer, Kullmann, Dimitri, Kaiyrzhanov, Rauan, Sullivan, Roisin, Khan, Alaa Matooq, Yau, Wai Yan, Hostettler, Isabel, Papanicolaou, Eleni Zamba, Dardiotis, Efthymios, Maqbool, Shazia, Ibrahim, Shahnaz, Kirmani, Salman, Rana, Nuzhat Noureen, Atawneh, Osama, Lim, Shen‐Yang, Shaikh, Farooq, Koutsis, George, Breza, Marianthi, Mangano, Salvatore, Scuderi, Carmela, Morello, Giovanna, Stojkovic, Tanya, Torti, Erin, Zollo, Massimi, Heimer, Gali, Dauvilliers, Yves A., Striano, Pasquale, Al‐Khawaja, Issam, Al‐Mutairi, Fuad, Alkuraya, Fowzan S, Sherifa, Hamed, Rizig, Mie, Okubadejo, Njideka U., Ojo, Oluwadamilola O., Oshinaike, Olajumoke O., Wahab, Kolawole, Bello, Abiodun H., Abubakar, Sanni, Obiabo, Yahaya, Nwazor, Ernest, Ekenze, Oluchi, Williams, Uduak, Iyagba, Alagoma, Taiwo, Lolade, Komolafe, Morenikeji, Oguntunde, Olapeju, Pchelina, Sofya, Senkevich, Konstantin, Haridy, Nourelhoda, Shashkin, Chingiz, Zharkynbekova, Nazira, Koneyev, Kairgali, Manizha, Ganieva, Isrofilov, Maksud, Guliyeva, Ulviyya, Salayev, Kamran, Khachatryan, Samson, Rossi, Salvatore, Silvestri, Gabriella, Bourinaris, Thomas, Xiromerisiou, Georgia, Fidani, Liana, Spanaki, Cleanthe, Tucci, Arianna, University College London Hospitals (UCLH), Université d'Ottawa [Ontario] (uOttawa), King‘s College London, University College of London [London] (UCL), University of Cyprus [Nicosia], UCL Institute of Neurology, National Hospital for Neurology and Neurosurgery, Queen Square, London, Institute of Psychiatry, Psychology & Neuroscience, King's College London, National Yang Ming University (NYMU), Department of Information and Communications Engineering [Murcia], Universidad de Murcia, Guy's Hospital [London], Cyprus Institute of Neurology and Genetics, University of Ottawa [Ottawa], The Ottawa Hospital, University of British Columbia (UBC), Ottawa Hospital Research Institute [Ottawa] (OHRI), Institute of Neurology, Queen Square, London, Sahlgrenska University Hospital, Biochemistry, Endocrinology and Metabolism Unit, Institute of Child Health, Laboratoire Chrono-environnement - CNRS - UBFC (UMR 6249) (LCE), Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC), Department of Human Genetics, Ruhr University Bochum (RUB), Universitat de Barcelona (UB), Department of Medical and Surgical Pediatrics, University Hospital, Fondazione, Departments of Human Genetics & Neurology, Leiden University Medical Center (LUMC), University of Laquila, Fondazione IRCCS Istituto Neurologico 'Carlo Besta', Yale University School of Medicine, Department of Microbiology, Università degli studi di Catania [Catania], CHU Pitié-Salpêtrière [AP-HP], Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Gene Dx, Partenaires INRAE, Tel Aviv University Sackler School of Medicine [Tel Aviv, Israël], Neuropsychiatrie : recherche épidémiologique et clinique (PSNREC), Université Montpellier 1 (UM1)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Universita degli studi di Genova, Fondazione 'Policlinico Universitario A. Gemelli' [Rome], UCL Institute of neurology, UCL Institute of Neurology, Chelban V., Wilson M.P., Warman Chardon J., Vandrovcova J., Zanetti M.N., Zamba-Papanicolaou E., Efthymiou S., Pope S., Conte M.R., Abis G., Liu Y.-T., Tribollet E., Haridy N.A., Botia J.A., Ryten M., Nicolaou P., Minaidou A., Christodoulou K., Kernohan K.D., Eaton A., Osmond M., Ito Y., Bourque P., Jepson J.E.C., Bello O., Bremner F., Cordivari C., Reilly M.M., Foiani M., Heslegrave A., Zetterberg H., Heales S.J.R., Wood N.W., Rothman J.E., Boycott K.M., Mills P.B., Clayton P.T., Houlden H., Kriouile Y., Khorassani M.E., Aguennouz M., Groppa S., Marinova Karashova B., Van Maldergem L., Nachbauer W., Boesch S., Arning L., Timmann D., Cormand B., Perez-Duenas B., Di Rosa G., Goraya J.S., Sultan T., Mine J., Avdjieva D., Kathom H., Tincheva R., Banu S., Pineda-Marfa M., Veggiotti P., Ferrari M.D., van den Maagdenberg A.M.J.M., Verrotti A., Marseglia G., Savasta S., Garcia-Silva M., Ruiz A.M., Garavaglia B., Borgione E., Portaro S., Sanchez B.M., Boles R., Papacostas S., Vikelis M., Rothman J., Giunti P., Salpietro V., Oconnor E., Kullmann D., Kaiyrzhanov R., Sullivan R., Khan A.M., Yau W.Y., Hostettler I., Papanicolaou E.Z., Dardiotis E., Maqbool S., Ibrahim S., Kirmani S., Rana N.N., Atawneh O., Lim S.-Y., Shaikh F., Koutsis G., Breza M., Mangano S., Scuderi C., Morello G., Stojkovic T., Torti E., Zollo M., Heimer G., Dauvilliers Y.A., Striano P., Al-Khawaja I., Al-Mutairi F., Alkuraya F.S., Sherifa H., Rizig M., Okubadejo N.U., Ojo O.O., Oshinaike O.O., Wahab K., Bello A.H., Abubakar S., Obiabo Y., Nwazor E., Ekenze O., Williams U., Iyagba A., Taiwo L., Komolafe M., Oguntunde O., Pchelina S., Senkevich K., Haridy N., Shashkin C., Zharkynbekova N., Koneyev K., Manizha G., Isrofilov M., Guliyeva U., Salayev K., Khachatryan S., Rossi S., Silvestri G., Bourinaris T., Xiromerisiou G., Fidani L., Spanaki C., and Tucci A.

Subjects
0301 basic medicine, Male, [SDV.NEU.NB]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Neurobiology, LOCAL TRANSLATION, Medizin, medicine.disease_cause, DISEASE, chemistry.chemical_compound, 0302 clinical medicine, polineuropathy, Cinètica enzimàtica, Gene Regulatory Networks, Pyridoxal phosphate, Child, Pyridoxal Kinase, Adenosine triphosphate (ATP), Research Articles, Aged, 80 and over, Mutation, Gene Regulatory Network, PLASMA, Autosomal recessive axonal polyneuropathy, Disease gene identification, Pyridoxal kinase, 3. Good health, Settore MED/26 - NEUROLOGIA, Neuropaties perifèriques, Treatment Outcome, Polyneuropathie, Neurology, Child, Preschool, Pyridoxal Phosphate, RELIABILITY, Vitamin B Complex, Female, Life Sciences & Biomedicine, Polyneuropathy, Human, Research Article, Adult, Adolescent, PDXK, Clinical Neurology, CHARCOT-MARIE-TOOTH, CHARCOT-MARIE-TOOTH, CMT NEUROPATHY SCORE, LOCAL TRANSLATION, DISEASE, RELIABILITY, MECHANISMS, DISCOVERY, FRAMEWORK, KINASE, PLASMA, MECHANISMS, 03 medical and health sciences, Polyneuropathies, Atrophy, [SDV.BBM.GTP]Life Sciences [q-bio]/Biochemistry, Molecular Biology/Genomics [q-bio.GN], KINASE, medicine, Humans, CMT NEUROPATHY SCORE, PDXK mutations, Pyridoxal, Dietary Supplement, Aged, Peripheral neuropathies, Science & Technology, [SCCO.NEUR]Cognitive science/Neuroscience, Enzyme kinetics, Neurosciences, FRAMEWORK, medicine.disease, Molecular biology, 030104 developmental biology, chemistry, DISCOVERY, Dietary Supplements, Neurosciences & Neurology, Neurology (clinical), Adenosine triphosphate, 030217 neurology & neurosurgery
Abstract

OBJECTIVE: To identify disease-causing variants in autosomal recessive axonal polyneuropathy with optic atrophy and provide targeted replacement therapy. METHODS: We performed genome-wide sequencing, homozygosity mapping, and segregation analysis for novel disease-causing gene discovery. We used circular dichroism to show secondary structure changes and isothermal titration calorimetry to investigate the impact of variants on adenosine triphosphate (ATP) binding. Pathogenicity was further supported by enzymatic assays and mass spectroscopy on recombinant protein, patient-derived fibroblasts, plasma, and erythrocytes. Response to supplementation was measured with clinical validated rating scales, electrophysiology, and biochemical quantification. RESULTS: We identified biallelic mutations in PDXK in 5 individuals from 2 unrelated families with primary axonal polyneuropathy and optic atrophy. The natural history of this disorder suggests that untreated, affected individuals become wheelchair-bound and blind. We identified conformational rearrangement in the mutant enzyme around the ATP-binding pocket. Low PDXK ATP binding resulted in decreased erythrocyte PDXK activity and low pyridoxal 5'-phosphate (PLP) concentrations. We rescued the clinical and biochemical profile with PLP supplementation in 1 family, improvement in power, pain, and fatigue contributing to patients regaining their ability to walk independently during the first year of PLP normalization. INTERPRETATION: We show that mutations in PDXK cause autosomal recessive axonal peripheral polyneuropathy leading to disease via reduced PDXK enzymatic activity and low PLP. We show that the biochemical profile can be rescued with PLP supplementation associated with clinical improvement. As B6 is a cofactor in diverse essential biological pathways, our findings may have direct implications for neuropathies of unknown etiology characterized by reduced PLP levels. ANN NEUROL 2019;86:225-240. ispartof: ANNALS OF NEUROLOGY vol:86 issue:2 pages:225-240 ispartof: location:United States status: published

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23. Inhibition of G-protein signalling in cardiac dysfunction of intellectual developmental disorder with cardiac arrhythmia (IDDCA) syndrome

Author

De Nittis P., Efthymiou S., Sarre A., Guex N., Chrast J., Putoux A., Sultan T., Raza Alvi J., Ur Rahman Z., Zafar F., Rana N., Rahman F., Anwar N., Maqbool S., Zaki M. S., Gleeson J. G., Murphy D., Galehdari H., Shariati G., Mazaheri N., Sedaghat A., Lesca G., Chatron N., Salpietro V., Christoforou M., Houlden H., Simonds W. F., Pedrazzini T., Maroofian R., Reymond A., SYNAPS STUDY GROUP: SYNAPS Study Group: Stanislav Groppa, Blagovesta Marinova Karashova, Wolfgang Nachbauer, Sylvia Boesch, Larissa Arning, Dagmar Timmann, Bru Cormand, Belen Pérez-Dueñas, Jatinder S Goraya, Tipu Sultan, Jun Mine, Daniela Avdjieva, Hadil Kathom, Radka Tincheva, Selina Banu, Mercedes Pineda-Marfa, Pierangelo Veggiotti, Michel D. Ferrari, Arn M. J. M. van den Maagdenberg, Alberto Verrotti, Giangluigi Marseglia, Salvatore Savasta, Mayte García-Silva, Alfons Macaya Ruiz, Barbara Garavaglia, Eugenia Borgione, Simona Portaro, Benigno Monteagudo Sanchez, Richard Boles, Savvas Papacostas, Michail Vikelis, Eleni Zamba Papanicolaou, Efthymios Dardiotis, Shazia Maqbool, Shahnaz Ibrahim, Salman Kirmani, Nuzhat Noureen Rana, Osama Atawneh, George Koutsis, Salvatore Mangano, Carmela Scuderi, Giovanna Morello, Tanya Stojkovic, Massimo Zollo, Gali Heimer, Yves A. Dauvilliers, Pasquale Striano, Issam Al-Khawaja, Fuad Al-Mutairi, Hamed Sherifa., University of Lausanne (UNIL), University College of London [London] (UCL), Hôpital Femme Mère Enfant [CHU - HCL] (HFME), Hospices Civils de Lyon (HCL), Children's Hospital [Lahore], Institute of Child Health [Lahore], Children's Hospital [Multan], Institute of Child Health [Multan], National Research Centre - NRC (EGYPT), Howard Hughes Medical Institute (HHMI), Shahid Chamran University of Ahvaz (SCU), Ahvaz Jundishapur University of Medical Sciences (AJUMS), National Institutes of Health [Bethesda] (NIH), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Neuropsychiatrie : recherche épidémiologique et clinique (PSNREC), Université Montpellier 1 (UM1)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM), Université Montpellier 1 (UM1)-Université de Montpellier (UM)-Institut National de la Santé et de la Recherche Médicale (INSERM), Université de Lausanne = University of Lausanne (UNIL), Herrada, Anthony, P., De Nitti, S., Efthymiou, A., Sarre, N., Guex, J., Chrast, A., Putoux, T., Sultan, J., Raza Alvi, Z., Ur Rahman, F., Zafar, N., Rana, F., Rahman, N., Anwar, S., Maqbool, M. S., Zaki, J. G., Gleeson, D., Murphy, H., Galehdari, G., Shariati, N., Mazaheri, A., Sedaghat, G., Lesca, N., Chatron, V., Salpietro, M., Christoforou, H., Houlden, W. F., Simond, T., Pedrazzini, R., Maroofian, A., Reymond, STUDY GROUP: SYNAPS Study Group: Stanislav Groppa, Synap, Marinova Karashova, Blagovesta, Nachbauer, Wolfgang, Boesch, Sylvia, Arning, Larissa, Timmann, Dagmar, Cormand, Bru, Pérez-Dueñas, Belen, S Goraya, Jatinder, Sultan, Tipu, Mine, Jun, Avdjieva, Daniela, Kathom, Hadil, Tincheva, Radka, Banu, Selina, Pineda-Marfa, Mercede, Veggiotti, Pierangelo, Ferrari, Michel D., van den Maagdenberg, Arn M. J. M., Verrotti, Alberto, Marseglia, Giangluigi, Savasta, Salvatore, García-Silva, Mayte, Macaya Ruiz, Alfon, Garavaglia, Barbara, Borgione, Eugenia, Portaro, Simona, Monteagudo Sanchez, Benigno, Boles, Richard, Papacostas, Savva, Vikelis, Michail, Zamba Papanicolaou, Eleni, Dardiotis, Efthymio, Maqbool, Shazia, Ibrahim, Shahnaz, Kirmani, Salman, Noureen Rana, Nuzhat, Atawneh, Osama, Koutsis, George, Mangano, Salvatore, Scuderi, Carmela, Morello, Giovanna, Stojkovic, Tanya, Zollo, Massimo, Heimer, Gali, Dauvilliers, Yves A., Striano, Pasquale, Al-Khawaja, Issam, Al-Mutairi, Fuad, and Sherifa., Hamed

Subjects
Male, 0301 basic medicine, Developmental Disabilities, Batecs cardíacs, 0302 clinical medicine, Neurodevelopmental disorder, Heart Rate, Medicine, Child, Genetics (clinical), Mice, Knockout, Gnb5-null mouse models, GTP-Binding Protein beta Subunits, Cardiac muscle, Heart, Syndrome, IDDCA, Functional Genomics, Pedigree, [SDV.MHEP.CSC] Life Sciences [q-bio]/Human health and pathology/Cardiology and cardiovascular system, cardiac conduction anomalies, Gnb5 -null mouse models, GNB5 variants, medicine.anatomical_structure, Child, Preschool, [SDV.BBM.GTP] Life Sciences [q-bio]/Biochemistry, Molecular Biology/Genomics [q-bio.GN], Female, medicine.symptom, Signal Transduction, Bradycardia, Cardiac function curve, Gnb5 -null mouse model, medicine.medical_specialty, Adolescent, [SDV.GEN.GH] Life Sciences [q-bio]/Genetics/Human genetics, Contractility, Young Adult, Brain damage, 03 medical and health sciences, [SDV.MHEP.CSC]Life Sciences [q-bio]/Human health and pathology/Cardiology and cardiovascular system, GNB5variants, [SDV.BBM.GTP]Life Sciences [q-bio]/Biochemistry, Molecular Biology/Genomics [q-bio.GN], Internal medicine, Exome Sequencing, Heart rate, Genetics, Animals, Humans, business.industry, Gene Expression Profiling, Heart beat, Proteins, Cardiac arrhythmia, Arrhythmias, Cardiac, GNB5 variant, medicine.disease, Mice, Inbred C57BL, Autonomic nervous system, 030104 developmental biology, Endocrinology, [SDV.GEN.GH]Life Sciences [q-bio]/Genetics/Human genetics, Mutation, Lesions cerebrals, cardiac conduction anomalie, business, Proteïnes, 030217 neurology & neurosurgery
Abstract

BackgroundPathogenic variants of GNB5 encoding the β5 subunit of the guanine nucleotide-binding protein cause IDDCA syndrome, an autosomal recessive neurodevelopmental disorder associated with cognitive disability and cardiac arrhythmia, particularly severe bradycardia.MethodsWe used echocardiography and telemetric ECG recordings to investigate consequences of Gnb5 loss in mouse.ResultsWe delineated a key role of Gnb5 in heart sinus conduction and showed that Gnb5-inhibitory signalling is essential for parasympathetic control of heart rate (HR) and maintenance of the sympathovagal balance. Gnb5−/− mice were smaller and had a smaller heart than Gnb5+/+ and Gnb5+/−, but exhibited better cardiac function. Lower autonomic nervous system modulation through diminished parasympathetic control and greater sympathetic regulation resulted in a higher baseline HR in Gnb5−/− mice. In contrast, Gnb5−/− mice exhibited profound bradycardia on treatment with carbachol, while sympathetic modulation of the cardiac stimulation was not altered. Concordantly, transcriptome study pinpointed altered expression of genes involved in cardiac muscle contractility in atria and ventricles of knocked-out mice. Homozygous Gnb5 loss resulted in significantly higher frequencies of sinus arrhythmias. Moreover, we described 13 affected individuals, increasing the IDDCA cohort to 44 patients.ConclusionsOur data demonstrate that loss of negative regulation of the inhibitory G-protein signalling causes HR perturbations in Gnb5−/− mice, an effect mainly driven by impaired parasympathetic activity. We anticipate that unravelling the mechanism of Gnb5 signalling in the autonomic control of the heart will pave the way for future drug screening.

Published
2020
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