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1. Epilepsy, hippocampal sclerosis and febrile seizures linked by common genetic variation around SCN1A

Author

Kasperavičiūtė, Dalia, Catarino, Claudia B., Matarin, Mar, Leu, Costin, Novy, Jan, Tostevin, Anna, Leal, Bárbara, Hessel, Ellen V. S., Hallmann, Kerstin, Hildebrand, Michael S., Dahl, Hans-Henrik M., Ryten, Mina, Trabzuni, Daniah, Ramasamy, Adaikalavan, Alhusaini, Saud, Doherty, Colin P., Dorn, Thomas, Hansen, Jörg, Krämer, Günter, Steinhoff, Bernhard J., Zumsteg, Dominik, Duncan, Susan, Kälviäinen, Reetta K., Eriksson, Kai J., Kantanen, Anne-Mari, Pandolfo, Massimo, Gruber-Sedlmayr, Ursula, Schlachter, Kurt, Reinthaler, Eva M., Stogmann, Elisabeth, Zimprich, Fritz, Théâtre, Emilie, Smith, Colin, O’Brien, Terence J., Meng Tan, K., Petrovski, Slave, Robbiano, Angela, Paravidino, Roberta, Zara, Federico, Striano, Pasquale, Sperling, Michael R., Buono, Russell J., Hakonarson, Hakon, Chaves, João, Costa, Paulo P., Silva, Berta M., da Silva, António M., de Graan, Pierre N. E., Koeleman, Bobby P. C., Becker, Albert, Schoch, Susanne, von Lehe, Marec, Reif, Philipp S., Rosenow, Felix, Becker, Felicitas, Weber, Yvonne, Lerche, Holger, Rössler, Karl, Buchfelder, Michael, Hamer, Hajo M., Kobow, Katja, Coras, Roland, Blumcke, Ingmar, Scheffer, Ingrid E., Berkovic, Samuel F., Weale, Michael E., Delanty, Norman, Depondt, Chantal, Cavalleri, Gianpiero L., Kunz, Wolfram S., and Sisodiya, Sanjay M.

Published
2013
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2. Common genetic variation and susceptibility to partial epilepsies: a genome-wide association study

Author

Kasperavičiūtė, Dalia, Catarino, Claudia B., Heinzen, Erin L., Depondt, Chantal, Cavalleri, Gianpiero L., Caboclo, Luis O., Tate, Sarah K., Jamnadas-Khoda, Jenny, Chinthapalli, Krishna, Clayton, Lisa M.S., Shianna, Kevin V., Radtke, Rodney A., Mikati, Mohamad A., Gallentine, William B., Husain, Aatif M., Alhusaini, Saud, Leppert, David, Middleton, Lefkos T., Gibson, Rachel A., Johnson, Michael R., Matthews, Paul M., Hosford, David, Heuser, Kjell, Amos, Leslie, Ortega, Marcos, Zumsteg, Dominik, Wieser, Heinz-Gregor, Steinhoff, Bernhard J., Krämer, Günter, Hansen, Jörg, Dorn, Thomas, Kantanen, Anne-Mari, Gjerstad, Leif, Peuralinna, Terhi, Hernandez, Dena G., Eriksson, Kai J., Kälviäinen, Reetta K., Doherty, Colin P., Wood, Nicholas W., Pandolfo, Massimo, Duncan, John S., Sander, Josemir W., Delanty, Norman, Goldstein, David B., and Sisodiya, Sanjay M.

Published
2010
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3. Epilepsy, hippocampal sclerosis and febrile seizures linked by common genetic variation around SCN1A

Author

Kasperavičiūtė, Dalia, Catarino, Claudia B., Matarin, Mar, Leu, Costin, Novy, Jan, Tostevin, Anna, Leal, Bárbara, Hessel, Ellen V. S., Hallmann, Kerstin, Hildebrand, Michael S., Dahl, Hans-Henrik M., Ryten, Mina, Trabzuni, Daniah, Ramasamy, Adaikalavan, Alhusaini, Saud, Doherty, Colin P., Dorn, Thomas, Hansen, Jörg, Krämer, Günter, Steinhoff, Bernhard J., Zumsteg, Dominik, Duncan, Susan, Kälviäinen, Reetta K., Eriksson, Kai J., Kantanen, Anne-Mari, Pandolfo, Massimo, Gruber-Sedlmayr, Ursula, Schlachter, Kurt, Reinthaler, Eva M., Stogmann, Elisabeth, Zimprich, Fritz, Théâtre, Emilie, Smith, Colin, O'Brien, Terence J., Meng Tan, K., Petrovski, Slave, Robbiano, Angela, Paravidino, Roberta, Zara, Federico, Striano, Pasquale, Sperling, Michael R., Buono, Russell J., Hakonarson, Hakon, Chaves, João, Costa, Paulo P., Silva, Berta M., da Silva, António M., de Graan, Pierre N. E., Koeleman, Bobby P. C., Becker, Albert, Schoch, Susanne, von Lehe, Marec, Reif, Philipp S., Rosenow, Felix, Becker, Felicitas, Weber, Yvonne, Lerche, Holger, Rössler, Karl, Buchfelder, Michael, Hamer, Hajo M., Kobow, Katja, Coras, Roland, Blumcke, Ingmar, Scheffer, Ingrid E., Berkovic, Samuel F., Weale, Michael E., Delanty, Norman, Depondt, Chantal, Cavalleri, Gianpiero L., Kunz, Wolfram S., Sisodiya, Sanjay M., Kasperavičiūtė, Dalia, Catarino, Claudia B., Matarin, Mar, Leu, Costin, Novy, Jan, Tostevin, Anna, Leal, Bárbara, Hessel, Ellen V. S., Hallmann, Kerstin, Hildebrand, Michael S., Dahl, Hans-Henrik M., Ryten, Mina, Trabzuni, Daniah, Ramasamy, Adaikalavan, Alhusaini, Saud, Doherty, Colin P., Dorn, Thomas, Hansen, Jörg, Krämer, Günter, Steinhoff, Bernhard J., Zumsteg, Dominik, Duncan, Susan, Kälviäinen, Reetta K., Eriksson, Kai J., Kantanen, Anne-Mari, Pandolfo, Massimo, Gruber-Sedlmayr, Ursula, Schlachter, Kurt, Reinthaler, Eva M., Stogmann, Elisabeth, Zimprich, Fritz, Théâtre, Emilie, Smith, Colin, O'Brien, Terence J., Meng Tan, K., Petrovski, Slave, Robbiano, Angela, Paravidino, Roberta, Zara, Federico, Striano, Pasquale, Sperling, Michael R., Buono, Russell J., Hakonarson, Hakon, Chaves, João, Costa, Paulo P., Silva, Berta M., da Silva, António M., de Graan, Pierre N. E., Koeleman, Bobby P. C., Becker, Albert, Schoch, Susanne, von Lehe, Marec, Reif, Philipp S., Rosenow, Felix, Becker, Felicitas, Weber, Yvonne, Lerche, Holger, Rössler, Karl, Buchfelder, Michael, Hamer, Hajo M., Kobow, Katja, Coras, Roland, Blumcke, Ingmar, Scheffer, Ingrid E., Berkovic, Samuel F., Weale, Michael E., Delanty, Norman, Depondt, Chantal, Cavalleri, Gianpiero L., Kunz, Wolfram S., and Sisodiya, Sanjay M.

Abstract

Epilepsy comprises several syndromes, amongst the most common being mesial temporal lobe epilepsy with hippocampal sclerosis. Seizures in mesial temporal lobe epilepsy with hippocampal sclerosis are typically drug-resistant, and mesial temporal lobe epilepsy with hippocampal sclerosis is frequently associated with important co-morbidities, mandating the search for better understanding and treatment. The cause of mesial temporal lobe epilepsy with hippocampal sclerosis is unknown, but there is an association with childhood febrile seizures. Several rarer epilepsies featuring febrile seizures are caused by mutations in SCN1A, which encodes a brain-expressed sodium channel subunit targeted by many anti-epileptic drugs. We undertook a genome-wide association study in 1018 people with mesial temporal lobe epilepsy with hippocampal sclerosis and 7552 control subjects, with validation in an independent sample set comprising 959 people with mesial temporal lobe epilepsy with hippocampal sclerosis and 3591 control subjects. To dissect out variants related to a history of febrile seizures, we tested cases with mesial temporal lobe epilepsy with hippocampal sclerosis with (overall n = 757) and without (overall n = 803) a history of febrile seizures. Meta-analysis revealed a genome-wide significant association for mesial temporal lobe epilepsy with hippocampal sclerosis with febrile seizures at the sodium channel gene cluster on chromosome 2q24.3 [rs7587026, within an intron of the SCN1A gene, P = 3.36 × 10−9, odds ratio (A) = 1.42, 95% confidence interval: 1.26-1.59]. In a cohort of 172 individuals with febrile seizures, who did not develop epilepsy during prospective follow-up to age 13 years, and 6456 controls, no association was found for rs7587026 and febrile seizures. These findings suggest SCN1A involvement in a common epilepsy syndrome, give new direction to biological understanding of mesial temporal lobe epilepsy with hippocampal sclerosis with febrile seizures, and o

Published
2017

4. Common genetic variation and susceptibility to partial epilepsies: a genome-wide association study

Author

Kasperavičiūtė, Dalia, Catarino, Claudia B., Heinzen, Erin L., Depondt, Chantal, Cavalleri, Gianpiero L., Caboclo, Luis O., Tate, Sarah K., Jamnadas-Khoda, Jenny, Chinthapalli, Krishna, Clayton, Lisa M.S., Shianna, Kevin V., Radtke, Rodney A., Mikati, Mohamad A., Gallentine, William B., Husain, Aatif M., Alhusaini, Saud, Leppert, David, Middleton, Lefkos T., Gibson, Rachel A., Johnson, Michael R., Matthews, Paul M., Hosford, David, Heuser, Kjell, Amos, Leslie, Ortega, Marcos, Zumsteg, Dominik, Wieser, Heinz-Gregor, Steinhoff, Bernhard J., Krämer, Günter, Hansen, Jörg, Dorn, Thomas, Kantanen, Anne-Mari, Gjerstad, Leif, Peuralinna, Terhi, Hernandez, Dena G., Eriksson, Kai J., Kälviäinen, Reetta K., Doherty, Colin P., Wood, Nicholas W., Pandolfo, Massimo, Duncan, John S., Sander, Josemir W., Delanty, Norman, Goldstein, David B., Sisodiya, Sanjay M., Kasperavičiūtė, Dalia, Catarino, Claudia B., Heinzen, Erin L., Depondt, Chantal, Cavalleri, Gianpiero L., Caboclo, Luis O., Tate, Sarah K., Jamnadas-Khoda, Jenny, Chinthapalli, Krishna, Clayton, Lisa M.S., Shianna, Kevin V., Radtke, Rodney A., Mikati, Mohamad A., Gallentine, William B., Husain, Aatif M., Alhusaini, Saud, Leppert, David, Middleton, Lefkos T., Gibson, Rachel A., Johnson, Michael R., Matthews, Paul M., Hosford, David, Heuser, Kjell, Amos, Leslie, Ortega, Marcos, Zumsteg, Dominik, Wieser, Heinz-Gregor, Steinhoff, Bernhard J., Krämer, Günter, Hansen, Jörg, Dorn, Thomas, Kantanen, Anne-Mari, Gjerstad, Leif, Peuralinna, Terhi, Hernandez, Dena G., Eriksson, Kai J., Kälviäinen, Reetta K., Doherty, Colin P., Wood, Nicholas W., Pandolfo, Massimo, Duncan, John S., Sander, Josemir W., Delanty, Norman, Goldstein, David B., and Sisodiya, Sanjay M.

Abstract

Partial epilepsies have a substantial heritability. However, the actual genetic causes are largely unknown. In contrast to many other common diseases for which genetic association-studies have successfully revealed common variants associated with disease risk, the role of common variation in partial epilepsies has not yet been explored in a well-powered study. We undertook a genome-wide association-study to identify common variants which influence risk for epilepsy shared amongst partial epilepsy syndromes, in 3445 patients and 6935 controls of European ancestry. We did not identify any genome-wide significant association. A few single nucleotide polymorphisms may warrant further investigation. We exclude common genetic variants with effect sizes above a modest 1.3 odds ratio for a single variant as contributors to genetic susceptibility shared across the partial epilepsies. We show that, at best, common genetic variation can only have a modest role in predisposition to the partial epilepsies when considered across syndromes in Europeans. The genetic architecture of the partial epilepsies is likely to be very complex, reflecting genotypic and phenotypic heterogeneity. Larger meta-analyses are required to identify variants of smaller effect sizes (odds ratio <1.3) or syndrome-specific variants. Further, our results suggest research efforts should also be directed towards identifying the multiple rare variants likely to account for at least part of the heritability of the partial epilepsies. Data emerging from genome-wide association-studies will be valuable during the next serious challenge of interpreting all the genetic variation emerging from whole-genome sequencing studies

Published
2017

5. Epilepsy, hippocampal sclerosis and febrile seizures linked by common genetic variation around SCN1A

Author

Kasperavičiūtė, Dalia, Catarino, Claudia B., Matarin, Mar, Leu, Costin, Novy, Jan, Tostevin, Anna, Leal, Bárbara, Hessel, Ellen V. S., Hallmann, Kerstin, Hildebrand, Michael S., Dahl, Hans-Henrik M., Ryten, Mina, Trabzuni, Daniah, Ramasamy, Adaikalavan, Alhusaini, Saud, Doherty, Colin P., Dorn, Thomas, Hansen, Jörg, Krämer, Günter, Steinhoff, Bernhard J., Zumsteg, Dominik, Duncan, Susan, Kälviäinen, Reetta K., Eriksson, Kai J., Kantanen, Anne-Mari, Pandolfo, Massimo, Gruber-Sedlmayr, Ursula, Schlachter, Kurt, Reinthaler, Eva M., Stogmann, Elisabeth, Zimprich, Fritz, Théâtre, Emilie, Smith, Colin, O'Brien, Terence J., Meng Tan, K., Petrovski, Slave, Robbiano, Angela, Paravidino, Roberta, Zara, Federico, Striano, Pasquale, Sperling, Michael R., Buono, Russell J., Hakonarson, Hakon, Chaves, João, Costa, Paulo P., Silva, Berta M., da Silva, António M., de Graan, Pierre N. E., Koeleman, Bobby P. C., Becker, Albert, Schoch, Susanne, von Lehe, Marec, Reif, Philipp S., Rosenow, Felix, Becker, Felicitas, Weber, Yvonne, Lerche, Holger, Rössler, Karl, Buchfelder, Michael, Hamer, Hajo M., Kobow, Katja, Coras, Roland, Blumcke, Ingmar, Scheffer, Ingrid E., Berkovic, Samuel F., Weale, Michael E., Delanty, Norman, Depondt, Chantal, Cavalleri, Gianpiero L., Kunz, Wolfram S., Sisodiya, Sanjay M., Kasperavičiūtė, Dalia, Catarino, Claudia B., Matarin, Mar, Leu, Costin, Novy, Jan, Tostevin, Anna, Leal, Bárbara, Hessel, Ellen V. S., Hallmann, Kerstin, Hildebrand, Michael S., Dahl, Hans-Henrik M., Ryten, Mina, Trabzuni, Daniah, Ramasamy, Adaikalavan, Alhusaini, Saud, Doherty, Colin P., Dorn, Thomas, Hansen, Jörg, Krämer, Günter, Steinhoff, Bernhard J., Zumsteg, Dominik, Duncan, Susan, Kälviäinen, Reetta K., Eriksson, Kai J., Kantanen, Anne-Mari, Pandolfo, Massimo, Gruber-Sedlmayr, Ursula, Schlachter, Kurt, Reinthaler, Eva M., Stogmann, Elisabeth, Zimprich, Fritz, Théâtre, Emilie, Smith, Colin, O'Brien, Terence J., Meng Tan, K., Petrovski, Slave, Robbiano, Angela, Paravidino, Roberta, Zara, Federico, Striano, Pasquale, Sperling, Michael R., Buono, Russell J., Hakonarson, Hakon, Chaves, João, Costa, Paulo P., Silva, Berta M., da Silva, António M., de Graan, Pierre N. E., Koeleman, Bobby P. C., Becker, Albert, Schoch, Susanne, von Lehe, Marec, Reif, Philipp S., Rosenow, Felix, Becker, Felicitas, Weber, Yvonne, Lerche, Holger, Rössler, Karl, Buchfelder, Michael, Hamer, Hajo M., Kobow, Katja, Coras, Roland, Blumcke, Ingmar, Scheffer, Ingrid E., Berkovic, Samuel F., Weale, Michael E., Delanty, Norman, Depondt, Chantal, Cavalleri, Gianpiero L., Kunz, Wolfram S., and Sisodiya, Sanjay M.

Abstract

Epilepsy comprises several syndromes, amongst the most common being mesial temporal lobe epilepsy with hippocampal sclerosis. Seizures in mesial temporal lobe epilepsy with hippocampal sclerosis are typically drug-resistant, and mesial temporal lobe epilepsy with hippocampal sclerosis is frequently associated with important co-morbidities, mandating the search for better understanding and treatment. The cause of mesial temporal lobe epilepsy with hippocampal sclerosis is unknown, but there is an association with childhood febrile seizures. Several rarer epilepsies featuring febrile seizures are caused by mutations in SCN1A, which encodes a brain-expressed sodium channel subunit targeted by many anti-epileptic drugs. We undertook a genome-wide association study in 1018 people with mesial temporal lobe epilepsy with hippocampal sclerosis and 7552 control subjects, with validation in an independent sample set comprising 959 people with mesial temporal lobe epilepsy with hippocampal sclerosis and 3591 control subjects. To dissect out variants related to a history of febrile seizures, we tested cases with mesial temporal lobe epilepsy with hippocampal sclerosis with (overall n = 757) and without (overall n = 803) a history of febrile seizures. Meta-analysis revealed a genome-wide significant association for mesial temporal lobe epilepsy with hippocampal sclerosis with febrile seizures at the sodium channel gene cluster on chromosome 2q24.3 [rs7587026, within an intron of the SCN1A gene, P = 3.36 × 10−9, odds ratio (A) = 1.42, 95% confidence interval: 1.26-1.59]. In a cohort of 172 individuals with febrile seizures, who did not develop epilepsy during prospective follow-up to age 13 years, and 6456 controls, no association was found for rs7587026 and febrile seizures. These findings suggest SCN1A involvement in a common epilepsy syndrome, give new direction to biological understanding of mesial temporal lobe epilepsy with hippocampal sclerosis with febrile seizures, and o

6. Common genetic variation and susceptibility to partial epilepsies: a genome-wide association study

Author

Kasperavičiūtė, Dalia, Catarino, Claudia B., Heinzen, Erin L., Depondt, Chantal, Cavalleri, Gianpiero L., Caboclo, Luis O., Tate, Sarah K., Jamnadas-Khoda, Jenny, Chinthapalli, Krishna, Clayton, Lisa M.S., Shianna, Kevin V., Radtke, Rodney A., Mikati, Mohamad A., Gallentine, William B., Husain, Aatif M., Alhusaini, Saud, Leppert, David, Middleton, Lefkos T., Gibson, Rachel A., Johnson, Michael R., Matthews, Paul M., Hosford, David, Heuser, Kjell, Amos, Leslie, Ortega, Marcos, Zumsteg, Dominik, Wieser, Heinz-Gregor, Steinhoff, Bernhard J., Krämer, Günter, Hansen, Jörg, Dorn, Thomas, Kantanen, Anne-Mari, Gjerstad, Leif, Peuralinna, Terhi, Hernandez, Dena G., Eriksson, Kai J., Kälviäinen, Reetta K., Doherty, Colin P., Wood, Nicholas W., Pandolfo, Massimo, Duncan, John S., Sander, Josemir W., Delanty, Norman, Goldstein, David B., Sisodiya, Sanjay M., Kasperavičiūtė, Dalia, Catarino, Claudia B., Heinzen, Erin L., Depondt, Chantal, Cavalleri, Gianpiero L., Caboclo, Luis O., Tate, Sarah K., Jamnadas-Khoda, Jenny, Chinthapalli, Krishna, Clayton, Lisa M.S., Shianna, Kevin V., Radtke, Rodney A., Mikati, Mohamad A., Gallentine, William B., Husain, Aatif M., Alhusaini, Saud, Leppert, David, Middleton, Lefkos T., Gibson, Rachel A., Johnson, Michael R., Matthews, Paul M., Hosford, David, Heuser, Kjell, Amos, Leslie, Ortega, Marcos, Zumsteg, Dominik, Wieser, Heinz-Gregor, Steinhoff, Bernhard J., Krämer, Günter, Hansen, Jörg, Dorn, Thomas, Kantanen, Anne-Mari, Gjerstad, Leif, Peuralinna, Terhi, Hernandez, Dena G., Eriksson, Kai J., Kälviäinen, Reetta K., Doherty, Colin P., Wood, Nicholas W., Pandolfo, Massimo, Duncan, John S., Sander, Josemir W., Delanty, Norman, Goldstein, David B., and Sisodiya, Sanjay M.

Abstract

Partial epilepsies have a substantial heritability. However, the actual genetic causes are largely unknown. In contrast to many other common diseases for which genetic association-studies have successfully revealed common variants associated with disease risk, the role of common variation in partial epilepsies has not yet been explored in a well-powered study. We undertook a genome-wide association-study to identify common variants which influence risk for epilepsy shared amongst partial epilepsy syndromes, in 3445 patients and 6935 controls of European ancestry. We did not identify any genome-wide significant association. A few single nucleotide polymorphisms may warrant further investigation. We exclude common genetic variants with effect sizes above a modest 1.3 odds ratio for a single variant as contributors to genetic susceptibility shared across the partial epilepsies. We show that, at best, common genetic variation can only have a modest role in predisposition to the partial epilepsies when considered across syndromes in Europeans. The genetic architecture of the partial epilepsies is likely to be very complex, reflecting genotypic and phenotypic heterogeneity. Larger meta-analyses are required to identify variants of smaller effect sizes (odds ratio <1.3) or syndrome-specific variants. Further, our results suggest research efforts should also be directed towards identifying the multiple rare variants likely to account for at least part of the heritability of the partial epilepsies. Data emerging from genome-wide association-studies will be valuable during the next serious challenge of interpreting all the genetic variation emerging from whole-genome sequencing studies

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