131 results on '"Gudmundsson, Sanna"'
Search Results
2. Considerations for reporting variants in novel candidate genes identified during clinical genomic testing
- Author
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Abouhala, Siwaar, Albert, Jessica, Almalvez, Miguel, Alvarez, Raquel, Amin, Mutaz, Anderson, Peter, Aradhya, Swaroop, Ashley, Euan, Assimes, Themistocles, Auriga, Light, Austin-Tse, Christina, Bamshad, Mike, Barseghyan, Hayk, Baxter, Samantha, Behera, Sairam, Beheshti, Shaghayegh, Bejerano, Gill, Berger, Seth, Bernstein, Jon, Best, Sabrina, Blankenmeister, Benjamin, Blue, Elizabeth, Boerwinkle, Eric, Bonkowski, Emily, Bonner, Devon, Boone, Philip, Bornhorst, Miriam, Brand, Harrison, Buckingham, Kati, Calame, Daniel, Carter, Jennefer, Casadei, Silvia, Chadwick, Lisa, Chavez, Clarisa, Chen, Ziwei, Chinn, Ivan, Chong, Jessica, Coban-Akdemir, Zeynep, Cohen, Andrea J., Conner, Sarah, Conomos, Matthew, Coveler, Karen, Cui, Ya Allen, Currin, Sara, Daber, Robert, Dardas, Zain, Davis, Colleen, Dawood, Moez, de Dios, Ivan, de Esch, Celine, Delaney, Meghan, Delot, Emmanuele, DiTroia, Stephanie, Doddapaneni, Harsha, Du, Haowei, Duan, Ruizhi, Dugan-Perez, Shannon, Duong, Nhat, Duyzend, Michael, Eichler, Evan, Emami, Sara, Fraser, Jamie, Fusaro, Vincent, Galey, Miranda, Ganesh, Vijay, Garcia, Brandon, Garimella, Kiran, Gibbs, Richard, Gifford, Casey, Ginsburg, Amy, Goddard, Page, Gogarten, Stephanie, Gogate, Nikhita, Gordon, William, Gorzynski, John E., Greenleaf, William, Grochowski, Christopher, Groopman, Emily, Sousa, Rodrigo Guarischi, Gudmundsson, Sanna, Gulati, Ashima, Hall, Stacey, Harvey, William, Hawley, Megan, Heavner, Ben, Horike-Pyne, Martha, Hu, Jianhong, Huang, Yongqing, Hwang, James, Jarvik, Gail, Jensen, Tanner, Jhangiani, Shalini, Jimenez-Morales, David, Jin, Christopher, Saad, Ahmed K., Kahn-Kirby, Amanda, Kain, Jessica, Kaur, Parneet, Keehan, Laura, Knoblach, Susan, Ko, Arthur, Kundaje, Anshul, Kundu, Soumya, Lancaster, Samuel M., Larsson, Katie, Lee, Arthur, Lemire, Gabrielle, Lewis, Richard, Li, Wei, Li, Yidan, Liu, Pengfei, LoTempio, Jonathan, Lupski, James (Jim), Ma, Jialan, MacArthur, Daniel, Mahmoud, Medhat, Malani, Nirav, Mangilog, Brian, Marafi, Dana, Marmolejos, Sofia, Marten, Daniel, Martinez, Eva, Marvin, Colby, Marwaha, Shruti, Mastrorosa, Francesco Kumara, Matalon, Dena, May, Susanne, McGee, Sean, Meador, Lauren, Mefford, Heather, Mendez, Hector Rodrigo, Miller, Alexander, Miller, Danny E., Mitani, Tadahiro, Montgomery, Stephen, Moyses, Mariana, Munderloh, Chloe, Muzny, Donna, Nelson, Sarah, Nguyen, Thuy-mi P., Nguyen, Jonathan, Nussbaum, Robert, Nykamp, Keith, O'Callaghan, William, O'Heir, Emily, O'Leary, Melanie, Olsen, Jeren, Osei-Owusu, Ikeoluwa, O'Donnell-Luria, Anne, Padhi, Evin, Pais, Lynn, Pan, Miao, Panchal, Piyush, Patterson, Karynne, Payne, Sheryl, Pehlivan, Davut, Petrowski, Paul, Pham, Alicia, Pitsava, Georgia, Podesta, Astaria`Sara, Ponce, Sarah, Porter, Elizabeth, Posey, Jennifer, Prosser, Jaime, Quertermous, Thomas, Rai, Archana, Ramani, Arun, Rehm, Heidi, Reuter, Chloe, Reuter, Jason, Richardson, Matthew, Rivera-Munoz, Andres, Rubio, Oriane, Sabo, Aniko, Salani, Monica, Samocha, Kaitlin, Sanchis-Juan, Alba, Savage, Sarah, Scott, Evette, Scott, Stuart, Sedlazeck, Fritz, Shah, Gulalai, Shojaie, Ali, Singh, Mugdha, Smith, Kevin, Smith, Josh, Snow, Hana, Snyder, Michael, Socarras, Kayla, Starita, Lea, Stark, Brigitte, Stenton, Sarah, Stergachis, Andrew, Stilp, Adrienne, Sutton, V. Reid, Tai, Jui-Cheng, Talkowski, Michael (Mike), Tise, Christina, Tong, Catherine (Cat), Tsao, Philip, Ungar, Rachel, VanNoy, Grace, Vilain, Eric, Voutos, Isabella, Walker, Kim, Wei, Chia-Lin, Weisburd, Ben, Weiss, Jeff, Wellington, Chris, Weng, Ziming, Westheimer, Emily, Wheeler, Marsha, Wheeler, Matthew, Wiel, Laurens, Wilson, Michael, Wojcik, Monica, Wong, Quenna, Xiao, Changrui, Yadav, Rachita, Yi, Qian, Yuan, Bo, Zhao, Jianhua, Zhen, Jimmy, Zhou, Harry, Chong, Jessica X., Berger, Seth I., Smith, Erica, Calame, Daniel G., Hawley, Megan H., Rivera-Munoz, E. Andres, Bamshad, Michael J., and Rehm, Heidi L.
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- 2024
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3. Variant interpretation using population databases: lessons from gnomAD
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Gudmundsson, Sanna, Singer-Berk, Moriel, Watts, Nicholas A., Phu, William, Goodrich, Julia K., Solomonson, Matthew, Consortium, Genome Aggregation Database, Rehm, Heidi L., MacArthur, Daniel G., and ODonnell-Luria, Anne
- Subjects
Quantitative Biology - Genomics - Abstract
Reference population databases are an essential tool in variant and gene interpretation. Their use guides the identification of pathogenic variants amidst the sea of benign variation present in every human genome, and supports the discovery of new disease-gene relationships. The Genome Aggregation Database (gnomAD) is currently the largest and most widely used publicly available collection of population variation from harmonized sequencing data. The data is available through the online gnomAD browser (https://gnomad.broadinstitute.org/) that enables rapid and intuitive variant analysis. This review provides guidance on the content of the gnomAD browser, and its usage for variant and gene interpretation. We introduce key features including allele frequency, per-base expression levels, constraint scores, and variant co-occurrence, alongside guidance on how to use these in analysis, with a focus on the interpretation of candidate variants and novel genes in rare disease., Comment: Version 3: Includes updates to mirror the latest features and layouts available on the gnomAD browser and general improvements to text and figures (clarifications, typos, additional references etc.) as well as the addition of Table S1, S2, Figure S1, S2 and S5
- Published
- 2021
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4. A novel quantitative targeted analysis of X-chromosome inactivation (XCI) using nanopore sequencing
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Johansson, Josefin, Lidéus, Sarah, Höijer, Ida, Ameur, Adam, Gudmundsson, Sanna, Annerén, Göran, Bondeson, Marie-Louise, and Wilbe, Maria
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- 2023
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5. Advanced variant classification framework reduces the false positive rate of predicted loss-of-function variants in population sequencing data
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Singer-Berk, Moriel, Gudmundsson, Sanna, Baxter, Samantha, Seaby, Eleanor G., England, Eleina, Wood, Jordan C., Son, Rachel G., Watts, Nicholas A., Karczewski, Konrad J., Harrison, Steven M., MacArthur, Daniel G., Rehm, Heidi L., and O’Donnell-Luria, Anne
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- 2023
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6. Beyond the exome: What’s next in diagnostic testing for Mendelian conditions
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Abouhala, Siwaar, Albert, Jessica, Almalvez, Miguel, Alvarez, Raquel, Amin, Mutaz, Anderson, Peter, Aradhya, Swaroop, Ashley, Euan, Assimes, Themistocles, Auriga, Light, Austin-Tse, Christina, Bamshad, Mike, Barseghyan, Hayk, Baxter, Samantha, Behera, Sairam, Beheshti, Shaghayegh, Bejerano, Gill, Berger, Seth, Bernstein, Jon, Best, Sabrina, Blankenmeister, Benjamin, Blue, Elizabeth, Boerwinkle, Eric, Bonkowski, Emily, Bonner, Devon, Boone, Philip, Bornhorst, Miriam, Bozkurt-Yozgatli, Tugce, Brand, Harrison, Buckingham, Kati, Calame, Daniel, Casadei, Silvia, Chadwick, Lisa, Chavez, Clarisa, Chen, Ziwei, Chinn, Ivan, Chong, Jessica, Coban-Akdemir, Zeynep, Cohen, Andrea J., Conner, Sarah, Conomos, Matthew, Coveler, Karen, Cui, Ya Allen, Currin, Sara, Daber, Robert, Dardas, Zain, Davis, Colleen, Dawood, Moez, de Dios, Ivan, de Esch, Celine, Delaney, Meghan, Délot, Emmanuèle, DiTroia, Stephanie, Doddapaneni, Harsha, Du, Haowei, Duan, Ruizhi, Dugan-Perez, Shannon, Duong, Nhat, Duyzend, Michael, Eichler, Evan, Emami, Sara, Fatih, Jawid, Fraser, Jamie, Fusaro, Vincent, Galey, Miranda, Ganesh, Vijay, Garimella, Kiran, Gibbs, Richard, Gifford, Casey, Ginsburg, Amy, Goddard, Pagé, Gogarten, Stephanie, Gogate, Nikhita, Gordon, William, Gorzynski, John E., Greenleaf, William, Grochowski, Christopher, Groopman, Emily, Guarischi Sousa, Rodrigo, Gudmundsson, Sanna, Gulati, Ashima, Guo, Daniel, Hale, Walker, Hall, Stacey, Harvey, William, Hawley, Megan, Heavner, Ben, Herman, Isabella, Horike-Pyne, Martha, Hu, Jianhong, Huang, Yongqing, Hwang, James, Jarvik, Gail, Jensen, Tanner, Jhangiani, Shalini, Jimenez-Morales, David, Jin, Christopher, Saad, Ahmed K., Kahn-Kirby, Amanda, Kain, Jessica, Kaur, Parneet, Keehan, Laura, Knoblach, Susan, Ko, Arthur, Kohler, Jennefer, Kundaje, Anshul, Kundu, Soumya, Lancaster, Samuel M., Larsson, Katie, Lemire, Gabrielle, Lewis, Richard, Li, Wei, Li, Yidan, Liu, Pengfei, LoTempio, Jonathan, Lupski, James, Ma, Jialan, MacArthur, Daniel, Mahmoud, Medhat, Malani, Nirav, Mangilog, Brian, Marafi, Dana, Marmolejos, Sofia, Marten, Daniel, Martinez, Eva, Marvin, Colby, Marwaha, Shruti, Kumara Mastrorosa, Francesco, Matalon, Dena, May, Susanne, McGee, Sean, Meador, Lauren, Mefford, Heather, Rodrigo Mendez, Hector, Miller, Alexander, Miller, Danny E., Mitani, Tadahiro, Montgomery, Stephen, Moussa, Hala Mohamed, Moyses, Mariana, Munderloh, Chloe, Muzny, Donna, Nelson, Sarah, Neu, Matthew B., Nguyen, Jonathan, Nguyen, Thuy-mi P., Nussbaum, Robert, Nykamp, Keith, O'Callaghan, William, O'Heir, Emily, O'Leary, Melanie, Olsen, Jeren, Osei-Owusu, Ikeoluwa, O'Donnell-Luria, Anne, Padhi, Evin, Pais, Lynn, Pan, Miao, Panchal, Piyush, Patterson, Karynne, Payne, Sheryl, Pehlivan, Davut, Petrowski, Paul, Pham, Alicia, Pitsava, Georgia, Podesta, Astaria, Ponce, Sarah, Posey, Jennifer, Prosser, Jaime, Quertermous, Thomas, Rai, Archana, Ramani, Arun, Rehm, Heidi, Reuter, Chloe, Reuter, Jason, Richardson, Matthew, Rivera-Munoz, Andres, Rubio, Oriane, Sabo, Aniko, Salani, Monica, Samocha, Kaitlin, Sanchis-Juan, Alba, Savage, Sarah, Scott, Stuart, Scott, Evette, Sedlazeck, Fritz, Shah, Gulalai, Shojaie, Ali, Singh, Mugdha, Smith, Josh, Smith, Kevin, Snow, Hana, Snyder, Michael, Socarras, Kayla, Starita, Lea, Stark, Brigitte, Stenton, Sarah, Stergachis, Andrew, Stilp, Adrienne, Sundaram, Laksshman, Sutton, V. Reid, Tai, Jui-Cheng, Talkowski, Michael, Tise, Christina, Tong, Catherine, Tsao, Philip, Ungar, Rachel, VanNoy, Grace, Vilain, Eric, Voutos, Isabella, Walker, Kim, Weisburd, Ben, Weiss, Jeff, Wellington, Chris, Weng, Ziming, Westheimer, Emily, Wheeler, Marsha, Wheeler, Matthew, Wiel, Laurens, Wilson, Michael, Wojcik, Monica, Wong, Quenna, Wong, Issac, Xiao, Changrui, Yadav, Rachita, Yi, Qian, Yuan, Bo, Zhao, Jianhua, Zhen, Jimmy, Zhou, Harry, Wojcik, Monica H., Reuter, Chloe M., Duyzend, Michael H., Boone, Philip M., Groopman, Emily E., Délot, Emmanuèle C., Jain, Deepti, Starita, Lea M., Montgomery, Stephen B., Bamshad, Michael J., Chong, Jessica X., Wheeler, Matthew T., Berger, Seth I., and Sedlazeck, Fritz J.
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- 2023
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7. A novel RAD21 p.(Gln592del) variant expands the clinical description of Cornelia de Lange syndrome type 4 – Review of the literature
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Gudmundsson, Sanna, Annerén, Göran, Marcos-Alcalde, Íñigo, Wilbe, Maria, Melin, Malin, Gómez-Puertas, Paulino, and Bondeson, Marie-Louise
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- 2019
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8. Amplification-free long-read sequencing reveals unforeseen CRISPR-Cas9 off-target activity
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Höijer, Ida, Johansson, Josefin, Gudmundsson, Sanna, Chin, Chen-Shan, Bunikis, Ignas, Häggqvist, Susana, Emmanouilidou, Anastasia, Wilbe, Maria, den Hoed, Marcel, Bondeson, Marie-Louise, Feuk, Lars, Gyllensten, Ulf, and Ameur, Adam
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- 2020
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9. Gustavson syndrome is caused by an in-frame deletion in RBMXassociated with potentially disturbed SH3 domain interactions
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Johansson, Josefin, Lidéus, Sarah, Frykholm, Carina, Gunnarsson, Cecilia, Mihalic, Filip, Gudmundsson, Sanna, Ekvall, Sara, Molin, Anna-Maja, Pham, Mai, Vihinen, Mauno, Lagerstedt-Robinson, Kristina, Nordgren, Ann, Jemth, Per, Ameur, Adam, Annerén, Göran, Wilbe, Maria, and Bondeson, Marie-Louise
- Abstract
RNA binding motif protein X‐linked (RBMX) encodes the heterogeneous nuclear ribonucleoprotein G (hnRNP G) that regulates splicing, sister chromatid cohesion and genome stability. RBMXknock down experiments in various model organisms highlight the gene’s importance for brain development. Deletion of the RGG/RG motif in hnRNP G has previously been associated with Shashi syndrome, however involvement of other hnRNP G domains in intellectual disability remain unknown. In the current study, we present the underlying genetic and molecular cause of Gustavson syndrome. Gustavson syndrome was first reported in 1993 in a large Swedish five-generation family presented with profound X-linked intellectual disability and an early death. Extensive genomic analyses of the family revealed hemizygosity for a novel in-frame deletion in RBMXin affected individuals (NM_002139.4; c.484_486del, p.(Pro162del)). Carrier females were asymptomatic and presented with skewed X-chromosome inactivation, indicating silencing of the pathogenic allele. Affected individuals presented minor phenotypic overlap with Shashi syndrome, indicating a different disease-causing mechanism. Investigation of the variant effect in a neuronal cell line (SH-SY5Y) revealed differentially expressed genes enriched for transcription factors involved in RNA polymerase II transcription. Prediction tools and a fluorescence polarization assay imply a novel SH3-binding motif of hnRNP G, and potentially a reduced affinity to SH3 domains caused by the deletion. In conclusion, we present a novel in-frame deletion in RBMXsegregating with Gustavson syndrome, leading to disturbed RNA polymerase II transcription, and potentially reduced SH3 binding. The results indicate that disruption of different protein domains affects the severity of RBMX-associated intellectual disabilities.
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- 2024
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10. Advanced variant classification framework reduces the false positive rate of predicted loss of function (pLoF) variants in population sequencing data
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Singer-Berk, Moriel, primary, Gudmundsson, Sanna, additional, Baxter, Samantha, additional, Seaby, Eleanor G, additional, Wood, Jordan C, additional, Son, Rachel G, additional, Watts, Nicholas A, additional, Karczewski, Konrad, additional, Harrison, Steven, additional, MacArthur, Daniel G, additional, Rehm, Heidi L, additional, and O'Donnell-Luria, Anne, additional
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- 2023
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11. Interpreting variants in genes affected by clonal hematopoiesis in population data
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Gudmundsson, Sanna, primary, Carlston, Colleen M., additional, and O’Donnell-Luria, Anne, additional
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- 2023
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12. P559: Improved classification framework demonstrates many population predicted loss of function (pLoF) variants in genomic sequencing do not result in LoF*
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Singer-Berk, Moriel, primary, Gudmundsson, Sanna, additional, Baxter, Samantha, additional, Seaby, Eleanor, additional, England, Eleina, additional, Wood, Jordan, additional, Son, Rachel, additional, Watts, Nicholas, additional, Karczewski, Konrad, additional, Harrison, Steven, additional, MacArthur, Daniel, additional, Rehm, Heidi, additional, and O'Donnell-Luria, Anne, additional
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- 2023
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13. TAF1, associated with intellectual disability in humans, is essential for embryogenesis and regulates neurodevelopmental processes in zebrafish
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Gudmundsson, Sanna, Wilbe, Maria, Filipek-Górniok, Beata, Molin, Anna-Maja, Ekvall, Sara, Johansson, Josefin, Allalou, Amin, Gylje, Hans, Kalscheuer, Vera M., Ledin, Johan, Annerén, Göran, and Bondeson, Marie-Louise
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- 2019
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14. A novel approach using long‐read sequencing and ddPCR to investigate gonadal mosaicism and estimate recurrence risk in two families with developmental disorders
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Wilbe, Maria, Gudmundsson, Sanna, Johansson, Josefin, Ameur, Adam, Stattin, Eva‐Lena, Annerén, Göran, Malmgren, Helena, Frykholm, Carina, and Bondeson, Marie‐Louise
- Published
- 2017
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15. Centers for Mendelian Genomics: A decade of facilitating gene discovery
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Baxter, Samantha M., primary, Posey, Jennifer E., additional, Lake, Nicole J., additional, Sobreira, Nara, additional, Chong, Jessica X., additional, Buyske, Steven, additional, Blue, Elizabeth E., additional, Chadwick, Lisa H., additional, Coban-Akdemir, Zeynep H., additional, Doheny, Kimberly F., additional, Davis, Colleen P., additional, Lek, Monkol, additional, Wellington, Christopher, additional, Jhangiani, Shalini N., additional, Gerstein, Mark, additional, Gibbs, Richard A., additional, Lifton, Richard P., additional, MacArthur, Daniel G., additional, Matise, Tara C., additional, Lupski, James R., additional, Valle, David, additional, Bamshad, Michael J., additional, Hamosh, Ada, additional, Mane, Shrikant, additional, Nickerson, Deborah A., additional, Rehm, Heidi L., additional, O’Donnell-Luria, Anne, additional, Adams, Marcia, additional, Aguet, François, additional, Akay, Gulsen, additional, Anderson, Peter, additional, Antonescu, Corina, additional, Arachchi, Harindra M., additional, Atik, Mehmed M., additional, Austin-Tse, Christina A., additional, Babb, Larry, additional, Bacus, Tamara J., additional, Bahrambeigi, Vahid, additional, Balasubramanian, Suganthi, additional, Bayram, Yavuz, additional, Beaudet, Arthur L., additional, Beck, Christine R., additional, Belmont, John W., additional, Below, Jennifer E., additional, Bilguvar, Kaya, additional, Boehm, Corinne D., additional, Boerwinkle, Eric, additional, Boone, Philip M., additional, Bowne, Sara J., additional, Brand, Harrison, additional, Buckingham, Kati J., additional, Byrne, Alicia B., additional, Calame, Daniel, additional, Campbell, Ian M., additional, Cao, Xiaolong, additional, Carvalho, Claudia, additional, Chander, Varuna, additional, Chang, Jaime, additional, Chao, Katherine R., additional, Chinn, Ivan K., additional, Clarke, Declan, additional, Collins, Ryan L., additional, Cummings, Beryl, additional, Dardas, Zain, additional, Dawood, Moez, additional, Delano, Kayla, additional, DiTroia, Stephanie P., additional, Doddapaneni, Harshavardhan, additional, Du, Haowei, additional, Du, Renqian, additional, Duan, Ruizhi, additional, Eldomery, Mohammad, additional, Eng, Christine M., additional, England, Eleina, additional, Evangelista, Emily, additional, Everett, Selin, additional, Fatih, Jawid, additional, Felsenfeld, Adam, additional, Francioli, Laurent C., additional, Frazar, Christian D., additional, Fu, Jack, additional, Gamarra, Emmanuel, additional, Gambin, Tomasz, additional, Gan, Weiniu, additional, Gandhi, Mira, additional, Ganesh, Vijay S., additional, Garimella, Kiran V., additional, Gauthier, Laura D., additional, Giroux, Danielle, additional, Gonzaga-Jauregui, Claudia, additional, Goodrich, Julia K., additional, Gordon, William W., additional, Griffith, Sean, additional, Grochowski, Christopher M., additional, Gu, Shen, additional, Gudmundsson, Sanna, additional, Hall, Stacey J., additional, Hansen, Adam, additional, Harel, Tamar, additional, Harmanci, Arif O., additional, Herman, Isabella, additional, Hetrick, Kurt, additional, Hijazi, Hadia, additional, Horike-Pyne, Martha, additional, Hsu, Elvin, additional, Hu, Jianhong, additional, Huang, Yongqing, additional, Hurless, Jameson R., additional, Jahl, Steve, additional, Jarvik, Gail P., additional, Jiang, Yunyun, additional, Johanson, Eric, additional, Jolly, Angad, additional, Karaca, Ender, additional, Khayat, Michael, additional, Knight, James, additional, Kolar, J. Thomas, additional, Kumar, Sushant, additional, Lalani, Seema, additional, Laricchia, Kristen M., additional, Larkin, Kathryn E., additional, Leal, Suzanne M., additional, Lemire, Gabrielle, additional, Lewis, Richard A., additional, Li, He, additional, Ling, Hua, additional, Lipson, Rachel B., additional, Liu, Pengfei, additional, Lovgren, Alysia Kern, additional, López-Giráldez, Francesc, additional, MacMillan, Melissa P., additional, Mangilog, Brian E., additional, Mano, Stacy, additional, Marafi, Dana, additional, Marosy, Beth, additional, Marshall, Jamie L., additional, Martin, Renan, additional, Marvin, Colby T., additional, Mawhinney, Michelle, additional, McGee, Sean, additional, McGoldrick, Daniel J., additional, Mehaffey, Michelle, additional, Mekonnen, Betselote, additional, Meng, Xiaolu, additional, Mitani, Tadahiro, additional, Miyake, Christina Y., additional, Mohr, David, additional, Morris, Shaine, additional, Mullen, Thomas E., additional, Murdock, David R., additional, Murugan, Mullai, additional, Muzny, Donna M., additional, Myers, Ben, additional, Neira, Juanita, additional, Nguyen, Kevin K., additional, Nielsen, Patrick M., additional, Nudelman, Natalie, additional, O’Heir, Emily, additional, O’Leary, Melanie C., additional, Ongaco, Chrissie, additional, Orange, Jordan, additional, Osei-Owusu, Ikeoluwa A., additional, Paine, Ingrid S., additional, Pais, Lynn S., additional, Paschall, Justin, additional, Patterson, Karynne, additional, Pehlivan, Davut, additional, Pelle, Benjamin, additional, Penney, Samantha, additional, Perez de Acha Chavez, Jorge, additional, Pierce-Hoffman, Emma, additional, Poli, Cecilia M., additional, Punetha, Jaya, additional, Radhakrishnan, Aparna, additional, Richardson, Matthew A., additional, Rodrigues, Eliete, additional, Roote, Gwendolin T., additional, Rosenfeld, Jill A., additional, Ryke, Erica L., additional, Sabo, Aniko, additional, Sanchez, Alice, additional, Schrauwen, Isabelle, additional, Scott, Daryl A., additional, Sedlazeck, Fritz, additional, Serrano, Jillian, additional, Shaw, Chad A., additional, Shelford, Tameka, additional, Shively, Kathryn M., additional, Singer-Berk, Moriel, additional, Smith, Joshua D., additional, Snow, Hana, additional, Snyder, Grace, additional, Solomonson, Matthew, additional, Son, Rachel G., additional, Song, Xiaofei, additional, Stankiewicz, Pawel, additional, Stephan, Taylorlyn, additional, Sutton, V. Reid, additional, Sveden, Abigail, additional, Sánchez, Diana Cornejo, additional, Tackett, Monica, additional, Talkowski, Michael, additional, Threlkeld, Machiko S., additional, Tiao, Grace, additional, Udler, Miriam S., additional, Vail, Laura, additional, Valivullah, Zaheer, additional, Valkanas, Elise, additional, VanNoy, Grace E., additional, Wang, Qingbo S., additional, Wang, Gao, additional, Wang, Lu, additional, Wangler, Michael F., additional, Watts, Nicholas A., additional, Weisburd, Ben, additional, Weiss, Jeffrey M., additional, Wheeler, Marsha M., additional, White, Janson J., additional, Williamson, Clara E., additional, Wilson, Michael W., additional, Wiszniewski, Wojciech, additional, Withers, Marjorie A., additional, Witmer, Dane, additional, Witzgall, Lauren, additional, Wohler, Elizabeth, additional, Wojcik, Monica H., additional, Wong, Isaac, additional, Wood, Jordan C., additional, Wu, Nan, additional, Xing, Jinchuan, additional, Yang, Yaping, additional, Yi, Qian, additional, Yuan, Bo, additional, Zeiger, Jordan E., additional, Zhang, Chaofan, additional, Zhang, Peng, additional, Zhang, Yan, additional, Zhang, Xiaohong, additional, Zhang, Yeting, additional, Zhang, Shifa, additional, Zoghbi, Huda, additional, and van den Veyver, Igna, additional
- Published
- 2022
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16. Revertant mosaicism repairs skin lesions in a patient with keratitis-ichthyosis-deafness syndrome by second-site mutations in connexin 26
- Author
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Gudmundsson, Sanna, Wilbe, Maria, Ekvall, Sara, Ameur, Adam, Cahill, Nicola, Alexandrov, Ludmil B., Virtanen, Marie, Hellström Pigg, Maritta, Vahlquist, Anders, Törmä, Hans, and Bondeson, Marie-Louise
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- 2017
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17. Loss of Nexilin function leads to a recessive lethal fetal cardiomyopathy characterized by cardiomegaly and endocardial fibroelastosis
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Johansson, Josefin, primary, Frykholm, Carina, additional, Ericson, Katharina, additional, Kazamia, Kalliopi, additional, Lindberg, Amanda, additional, Mulaiese, Nancy, additional, Falck, Geir, additional, Gustafsson, Per‐Erik, additional, Lidéus, Sarah, additional, Gudmundsson, Sanna, additional, Ameur, Adam, additional, Bondeson, Marie‐Louise, additional, and Wilbe, Maria, additional
- Published
- 2022
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18. Variant interpretation using population databases: Lessons from gnomAD.
- Author
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Gudmundsson, Sanna, Singer‐Berk, Moriel, Watts, Nicholas A., Phu, William, Goodrich, Julia K., Solomonson, Matthew, Rehm, Heidi L., MacArthur, Daniel G., and O'Donnell‐Luria, Anne
- Abstract
Reference population databases are an essential tool in variant and gene interpretation. Their use guides the identification of pathogenic variants amidst the sea of benign variation present in every human genome, and supports the discovery of new disease–gene relationships. The Genome Aggregation Database (gnomAD) is currently the largest and most widely used publicly available collection of population variation from harmonized sequencing data. The data is available through the online gnomAD browser (https://gnomad.broadinstitute.org/) that enables rapid and intuitive variant analysis. This review provides guidance on the content of the gnomAD browser, and its usage for variant and gene interpretation. We introduce key features including allele frequency, per‐base expression levels, constraint scores, and variant co‐occurrence, alongside guidance on how to use these in analysis, with a focus on the interpretation of candidate variants and novel genes in rare disease. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
19. A form of muscular dystrophy associated with pathogenic variants in JAG2
- Author
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Coppens, Sandra, primary, Barnard, Alison M., additional, Puusepp, Sanna, additional, Pajusalu, Sander, additional, Õunap, Katrin, additional, Vargas-Franco, Dorianmarie, additional, Bruels, Christine C., additional, Donkervoort, Sandra, additional, Pais, Lynn, additional, Chao, Katherine R., additional, Goodrich, Julia K., additional, England, Eleina M., additional, Weisburd, Ben, additional, Ganesh, Vijay S., additional, Gudmundsson, Sanna, additional, O’Donnell-Luria, Anne, additional, Nigul, Mait, additional, Ilves, Pilvi, additional, Mohassel, Payam, additional, Siddique, Teepu, additional, Milone, Margherita, additional, Nicolau, Stefan, additional, Maroofian, Reza, additional, Houlden, Henry, additional, Hanna, Michael G., additional, Quinlivan, Ros, additional, Toosi, Mehran Beiraghi, additional, Karimiani, Ehsan Ghayoor, additional, Costagliola, Sabine, additional, Deconinck, Nicolas, additional, Kadhim, Hazim, additional, Macke, Erica, additional, Lanpher, Brendan C., additional, Klee, Eric W., additional, Łusakowska, Anna, additional, Kostera-Pruszczyk, Anna, additional, Hahn, Andreas, additional, Schrank, Bertold, additional, Nishino, Ichizo, additional, Ogasawara, Masashi, additional, El Sherif, Rasha, additional, Stojkovic, Tanya, additional, Nelson, Isabelle, additional, Bonne, Gisèle, additional, Cohen, Enzo, additional, Boland-Augé, Anne, additional, Deleuze, Jean-François, additional, Meng, Yao, additional, Töpf, Ana, additional, Vilain, Catheline, additional, Pacak, Christina A., additional, Rivera-Zengotita, Marie L., additional, Bönnemann, Carsten G., additional, Straub, Volker, additional, Handford, Penny A., additional, Draper, Isabelle, additional, Walter, Glenn A., additional, and Kang, Peter B., additional
- Published
- 2021
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20. Additional file 13 of Amplification-free long-read sequencing reveals unforeseen CRISPR-Cas9 off-target activity
- Author
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Höijer, Ida, Johansson, Josefin, Gudmundsson, Sanna, Chen-Shan Chin, Bunikis, Ignas, Häggqvist, Susana, Emmanouilidou, Anastasia, Wilbe, Maria, Hoed, Marcel Den, Marie-Louise Bondeson, Feuk, Lars, Gyllensten, Ulf, and Ameur, Adam
- Abstract
Additional file 13. Review history.
- Published
- 2020
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21. Delineation of phenotypes and genotypes related to cohesin structural protein RAD21
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Krab, Lianne C., primary, Marcos-Alcalde, Iñigo, additional, Assaf, Melissa, additional, Balasubramanian, Meena, additional, Andersen, Janne Bayer, additional, Bisgaard, Anne-Marie, additional, Fitzpatrick, David R., additional, Gudmundsson, Sanna, additional, Huisman, Sylvia A., additional, Kalayci, Tugba, additional, Maas, Saskia M., additional, Martinez, Francisco, additional, McKee, Shane, additional, Menke, Leonie A., additional, Mulder, Paul A., additional, Murch, Oliver D., additional, Parker, Michael, additional, Pie, Juan, additional, Ramos, Feliciano J., additional, Rieubland, Claudine, additional, Rosenfeld Mokry, Jill A., additional, Scarano, Emanuela, additional, Shinawi, Marwan, additional, Gómez-Puertas, Paulino, additional, Tümer, Zeynep, additional, and Hennekam, Raoul C., additional
- Published
- 2020
- Full Text
- View/download PDF
22. Amplification-free long read sequencing reveals unforeseen CRISPR-Cas9 off-target activity
- Author
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Höijer, Ida, primary, Johansson, Josefin, additional, Gudmundsson, Sanna, additional, Chin, Chen-Shan, additional, Bunikis, Ignas, additional, Häggqvist, Susana, additional, Emmanouilidou, Anastasia, additional, Wilbe, Maria, additional, Hoed, Marcel den, additional, Bondeson, Marie-Louise, additional, Feuk, Lars, additional, Gyllensten, Ulf, additional, and Ameur, Adam, additional
- Published
- 2020
- Full Text
- View/download PDF
23. Translational Research of Mendelian Disorders : Applications of Cutting-Edge Sequencing Techniques and Molecular Tools
- Author
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Gudmundsson, Sanna
- Subjects
Mendelian disorders ,translational research ,intellectual disability ,sequencing technologies ,Genetics ,Genetik - Abstract
Up to 8% of all live-born children are affected with a congenital disorder. Some are Mendelian disorders of known etiology, but many are of undetermined genetic cause and mechanism, limiting diagnosis and treatment. This project aims to investigate the underlying causes of unresolved Mendelian disorders, and especially syndromes associated with intellectual disability, by using cutting-edge sequencing techniques and molecular tools in a translational setting that intends to directly benefit affected families. In Paper I, we report the first keratitis-ichthyosis-deafness syndrome patient presenting with reversion of disease phenotype, a phenomenon known as revertant mosaicism. Third-generation sequencing and a cell assay were used to pin-point the mechanism of the somatic variants giving rise to healthy looking skin in the patient. In Paper II, we describe a novel approach to investigate parental origin, gonadal mosaicism, and estimate recurrence risk of disease in two families. Third-generation sequencing was used for haplotype phasing and detection of low-frequency variants in paternal sperm. The recurrence risk in future offspring in the families affected with Noonan syndrome and Treacher Collins syndrome was determined to be 40% and
- Published
- 2019
24. Considerations for reporting variants in novel candidate genes identified during clinical genomic testing
- Author
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Chong, Jessica X., Berger, Seth I., Baxter, Samantha, Smith, Erica, Xiao, Changrui, Calame, Daniel G., Hawley, Megan H., Rivera-Munoz, E. Andres, DiTroia, Stephanie, Abouhala, Siwaar, Albert, Jessica, Almalvez, Miguel, Alvarez, Raquel, Amin, Mutaz, Anderson, Peter, Aradhya, Swaroop, Ashley, Euan, Assimes, Themistocles, Auriga, Light, Austin-Tse, Christina, Bamshad, Mike, Barseghyan, Hayk, Baxter, Samantha, Behera, Sairam, Beheshti, Shaghayegh, Bejerano, Gill, Berger, Seth, Bernstein, Jon, Best, Sabrina, Blankenmeister, Benjamin, Blue, Elizabeth, Boerwinkle, Eric, Bonkowski, Emily, Bonner, Devon, Boone, Philip, Bornhorst, Miriam, Brand, Harrison, Buckingham, Kati, Calame, Daniel, Carter, Jennefer, Casadei, Silvia, Chadwick, Lisa, Chavez, Clarisa, Chen, Ziwei, Chinn, Ivan, Chong, Jessica, Coban-Akdemir, Zeynep, Cohen, Andrea J., Conner, Sarah, Conomos, Matthew, Coveler, Karen, Cui, Ya Allen, Currin, Sara, Daber, Robert, Dardas, Zain, Davis, Colleen, Dawood, Moez, de Dios, Ivan, de Esch, Celine, Delaney, Meghan, Delot, Emmanuele, DiTroia, Stephanie, Doddapaneni, Harsha, Du, Haowei, Duan, Ruizhi, Dugan-Perez, Shannon, Duong, Nhat, Duyzend, Michael, Eichler, Evan, Emami, Sara, Fraser, Jamie, Fusaro, Vincent, Galey, Miranda, Ganesh, Vijay, Garcia, Brandon, Garimella, Kiran, Gibbs, Richard, Gifford, Casey, Ginsburg, Amy, Goddard, Page, Gogarten, Stephanie, Gogate, Nikhita, Gordon, William, Gorzynski, John E., Greenleaf, William, Grochowski, Christopher, Groopman, Emily, Sousa, Rodrigo Guarischi, Gudmundsson, Sanna, Gulati, Ashima, Hall, Stacey, Harvey, William, Hawley, Megan, Heavner, Ben, Horike-Pyne, Martha, Hu, Jianhong, Huang, Yongqing, Hwang, James, Jarvik, Gail, Jensen, Tanner, Jhangiani, Shalini, Jimenez-Morales, David, Jin, Christopher, Saad, Ahmed K., Kahn-Kirby, Amanda, Kain, Jessica, Kaur, Parneet, Keehan, Laura, Knoblach, Susan, Ko, Arthur, Kundaje, Anshul, Kundu, Soumya, Lancaster, Samuel M., Larsson, Katie, Lee, Arthur, Lemire, Gabrielle, Lewis, Richard, Li, Wei, Li, Yidan, Liu, Pengfei, LoTempio, Jonathan, Lupski, James (Jim), Ma, Jialan, MacArthur, Daniel, Mahmoud, Medhat, Malani, Nirav, Mangilog, Brian, Marafi, Dana, Marmolejos, Sofia, Marten, Daniel, Martinez, Eva, Marvin, Colby, Marwaha, Shruti, Mastrorosa, Francesco Kumara, Matalon, Dena, May, Susanne, McGee, Sean, Meador, Lauren, Mefford, Heather, Mendez, Hector Rodrigo, Miller, Alexander, Miller, Danny E., Mitani, Tadahiro, Montgomery, Stephen, Moyses, Mariana, Munderloh, Chloe, Muzny, Donna, Nelson, Sarah, Nguyen, Thuy-mi P., Nguyen, Jonathan, Nussbaum, Robert, Nykamp, Keith, O'Callaghan, William, O'Heir, Emily, O'Leary, Melanie, Olsen, Jeren, Osei-Owusu, Ikeoluwa, O'Donnell-Luria, Anne, Padhi, Evin, Pais, Lynn, Pan, Miao, Panchal, Piyush, Patterson, Karynne, Payne, Sheryl, Pehlivan, Davut, Petrowski, Paul, Pham, Alicia, Pitsava, Georgia, Podesta, Astaria Sara, Ponce, Sarah, Porter, Elizabeth, Posey, Jennifer, Prosser, Jaime, Quertermous, Thomas, Rai, Archana, Ramani, Arun, Rehm, Heidi, Reuter, Chloe, Reuter, Jason, Richardson, Matthew, Rivera-Munoz, Andres, Rubio, Oriane, Sabo, Aniko, Salani, Monica, Samocha, Kaitlin, Sanchis-Juan, Alba, Savage, Sarah, Scott, Evette, Scott, Stuart, Sedlazeck, Fritz, Shah, Gulalai, Shojaie, Ali, Singh, Mugdha, Smith, Kevin, Smith, Josh, Snow, Hana, Snyder, Michael, Socarras, Kayla, Starita, Lea, Stark, Brigitte, Stenton, Sarah, Stergachis, Andrew, Stilp, Adrienne, Sutton, V. Reid, Tai, Jui-Cheng, Talkowski, Michael (Mike), Tise, Christina, Tong, Catherine (Cat), Tsao, Philip, Ungar, Rachel, VanNoy, Grace, Vilain, Eric, Voutos, Isabella, Walker, Kim, Wei, Chia-Lin, Weisburd, Ben, Weiss, Jeff, Wellington, Chris, Weng, Ziming, Westheimer, Emily, Wheeler, Marsha, Wheeler, Matthew, Wiel, Laurens, Wilson, Michael, Wojcik, Monica, Wong, Quenna, Xiao, Changrui, Yadav, Rachita, Yi, Qian, Yuan, Bo, Zhao, Jianhua, Zhen, Jimmy, Zhou, Harry, Bamshad, Michael J., and Rehm, Heidi L.
- Abstract
Since the first novel gene discovery for a Mendelian condition was made via exome sequencing (ES), the rapid increase in the number of genes known to underlie Mendelian conditions coupled with the adoption of exome (and more recently, genome) sequencing by diagnostic testing labs has changed the landscape of genomic testing for rare disease. Specifically, many individuals suspected to have a Mendelian condition are now routinely offered clinical ES. This commonly results in a precise genetic diagnosis but frequently overlooks the identification of novel candidate genes. Such candidates are also less likely to be identified in the absence of large-scale gene discovery research programs. Accordingly, clinical laboratories have both the opportunity, and some might argue a responsibility, to contribute to novel gene discovery which should in turn increase the diagnostic yield for many conditions. However, clinical diagnostic laboratories must necessarily balance priorities for throughput, turnaround time, cost efficiency, clinician preferences, and regulatory constraints, and often do not have the infrastructure or resources to effectively participate in either clinical translational or basic genome science research efforts. For these and other reasons, many laboratories have historically refrained from broadly sharing potentially pathogenic variants in novel genes via networks like Matchmaker Exchange, much less reporting such results to ordering providers. Efforts to report such results are further complicated by a lack of guidelines for clinical reporting and interpretation of variants in novel candidate genes. Nevertheless, there are myriad benefits for many stakeholders, including patients/families, clinicians, researchers, if clinical laboratories systematically and routinely identify, share, and report novel candidate genes. To facilitate this change in practice, we developed criteria for triaging, sharing, and reporting novel candidate genes that are most likely to be promptly validated as underlying a Mendelian condition and translated to use in clinical settings.
- Published
- 2024
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25. A novel ECEL1 mutation expands the phenotype of distal arthrogryposis multiplex congenita type 5D to include pretibial vertical skin creases
- Author
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Stattin, Eva-Lena, primary, Johansson, Josefin, additional, Gudmundsson, Sanna, additional, Ameur, Adam, additional, Lundberg, Staffan, additional, Bondeson, Marie-Louise, additional, and Wilbe, Maria, additional
- Published
- 2018
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- View/download PDF
26. Additional file 1: of Targeted high-throughput sequencing of candidate genes for chronic obstructive pulmonary disease
- Author
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Matsson, Hans, Söderhäll, Cilla, Einarsdottir, Elisabet, Lamontagne, Maxime, Gudmundsson, Sanna, Backman, Helena, Lindberg, Anne, Rönmark, Eva, Kere, Juha, Sin, Don, Postma, Dirkje, Yohan Bossé, Lundbäck, Bo, and Klar, Joakim
- Abstract
Supplementary methods. Detailed methods description regarding classification of COPD, sequencing protocol and linkage disequilibrium analysis. (DOCX 123 kb)
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- 2016
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27. Additional file 2: of Targeted high-throughput sequencing of candidate genes for chronic obstructive pulmonary disease
- Author
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Matsson, Hans, Söderhäll, Cilla, Einarsdottir, Elisabet, Lamontagne, Maxime, Gudmundsson, Sanna, Backman, Helena, Lindberg, Anne, Rönmark, Eva, Kere, Juha, Sin, Don, Postma, Dirkje, Yohan Bossé, Lundbäck, Bo, and Klar, Joakim
- Abstract
Targeted genes and variants for targeted high throughput sequencing. The table lists the selected genes and variants included in the study. (DOCX 79 kb)
- Published
- 2016
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- View/download PDF
28. Additional file 7 of Targeted high-throughput sequencing of candidate genes for chronic obstructive pulmonary disease
- Author
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Matsson, Hans, Söderhäll, Cilla, Einarsdottir, Elisabet, Lamontagne, Maxime, Gudmundsson, Sanna, Backman, Helena, Lindberg, Anne, Rönmark, Eva, Kere, Juha, Sin, Don, Postma, Dirkje, Yohan Bossé, Lundbäck, Bo, and Klar, Joakim
- Subjects
fungi ,respiratory system ,human activities ,respiratory tract diseases - Abstract
Probe sets replicated in both replication sets (UBC and Groningen) in the lung eQTL analyses. A table of replicated probe sets in the lung eQTL analysis. (DOCX 38 kb)
- Published
- 2016
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29. Additional file 5: of Targeted high-throughput sequencing of candidate genes for chronic obstructive pulmonary disease
- Author
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Matsson, Hans, Söderhäll, Cilla, Einarsdottir, Elisabet, Lamontagne, Maxime, Gudmundsson, Sanna, Backman, Helena, Lindberg, Anne, Rönmark, Eva, Kere, Juha, Sin, Don, Postma, Dirkje, Yohan Bossé, Lundbäck, Bo, and Klar, Joakim
- Subjects
humanities - Abstract
Pairwise linkage disequilibrium (LD) of associated variants. A list of detected genetic variants found to be in LD. (DOCX 46 kb)
- Published
- 2016
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- View/download PDF
30. Additional file 6 of Targeted high-throughput sequencing of candidate genes for chronic obstructive pulmonary disease
- Author
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Matsson, Hans, Söderhäll, Cilla, Einarsdottir, Elisabet, Lamontagne, Maxime, Gudmundsson, Sanna, Backman, Helena, Lindberg, Anne, Rönmark, Eva, Kere, Juha, Sin, Don, Postma, Dirkje, Yohan Bossé, Lundbäck, Bo, and Klar, Joakim
- Subjects
fungi ,mental disorders - Abstract
A plot containing genomic positions and p-values of variants in the CHRNA3/CHRNA5 gene locus with rs8040869 and rs16969968 highlighted. (PDF 144 kb)
- Published
- 2016
- Full Text
- View/download PDF
31. Additional file 4: of Targeted high-throughput sequencing of candidate genes for chronic obstructive pulmonary disease
- Author
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Matsson, Hans, Söderhäll, Cilla, Einarsdottir, Elisabet, Lamontagne, Maxime, Gudmundsson, Sanna, Backman, Helena, Lindberg, Anne, Rönmark, Eva, Kere, Juha, Sin, Don, Postma, Dirkje, Yohan Bossé, Lundbäck, Bo, and Klar, Joakim
- Abstract
Gene burden analysis of common variants. The table present the SKAT analysis of gene burden of common variants. (DOCX 86 kb)
- Published
- 2016
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32. Additional file 3: of Targeted high-throughput sequencing of candidate genes for chronic obstructive pulmonary disease
- Author
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Matsson, Hans, Söderhäll, Cilla, Einarsdottir, Elisabet, Lamontagne, Maxime, Gudmundsson, Sanna, Backman, Helena, Lindberg, Anne, Rönmark, Eva, Kere, Juha, Sin, Don, Postma, Dirkje, Yohan Bossé, Lundbäck, Bo, and Klar, Joakim
- Abstract
Number of rare variants found uniquely in cases and controls. The table present data of the UNIQ test of rare variants in cases versus controls. (DOCX 78 kb)
- Published
- 2016
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33. Targeted high-throughput sequencing of candidate genes for chronic obstructive pulmonary disease
- Author
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Matsson, Hans, primary, Söderhäll, Cilla, additional, Einarsdottir, Elisabet, additional, Lamontagne, Maxime, additional, Gudmundsson, Sanna, additional, Backman, Helena, additional, Lindberg, Anne, additional, Rönmark, Eva, additional, Kere, Juha, additional, Sin, Don, additional, Postma, Dirkje S., additional, Bossé, Yohan, additional, Lundbäck, Bo, additional, and Klar, Joakim, additional
- Published
- 2016
- Full Text
- View/download PDF
34. Addendum: The mutational constraint spectrum quantified from variation in 141,456 humans.
- Author
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Gudmundsson, Sanna, Karczewski, Konrad J., Francioli, Laurent C., Tiao, Grace, Cummings, Beryl B., Alföldi, Jessica, Wang, Qingbo, Collins, Ryan L., Laricchia, Kristen M., Ganna, Andrea, Birnbaum, Daniel P., Gauthier, Laura D., Brand, Harrison, Solomonson, Matthew, Watts, Nicholas A., Rhodes, Daniel, Singer-Berk, Moriel, England, Eleina M., Seaby, Eleanor G., and Kosmicki, Jack A.
- Published
- 2021
- Full Text
- View/download PDF
35. Targeted high-throughput sequencing of candidate genes for chronic obstructive pulmonary disease
- Author
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Matsson, Hans, Söderhäll, Cilla, Einarsdottir, Elisabet, Lamontagne, Maxime, Gudmundsson, Sanna, Backman, Helena, Lindberg, Anne, Rönmark, Eva, Kere, Juha, Sin, Don, Postma, Dirkje S, Bossé, Yohan, Lundbäck, Bo, and Klar, Joakim
- Subjects
respiratory tract diseases ,3. Good health - Abstract
Background: Reduced lung function in patients with chronic obstructive pulmonary disease (COPD) is likely due to both environmental and genetic factors. We report here a targeted high-throughput DNA sequencing approach to identify new and previously known genetic variants in a set of candidate genes for COPD. Methods: Exons in 22 genes implicated in lung development as well as 61 genes and 10 genomic regions previously associated with COPD were sequenced using individual DNA samples from 68 cases with moderate or severe COPD and 66 controls matched for age, gender and smoking. Cases and controls were selected from the Obstructive Lung Disease in Northern Sweden (OLIN) studies. Results: In total, 37 genetic variants showed association with COPD (p
36. Gustavson syndrome is caused by an in-frame deletion in RBMX associated with potentially disturbed SH3 domain interactions
- Abstract
RNA binding motif protein X-linked (RBMX) encodes the heterogeneous nuclear ribonucleoprotein G (hnRNP G) that regulates splicing, sister chromatid cohesion and genome stability. RBMX knock down experiments in various model organisms highlight the genes importance for brain development. Deletion of the RGG/RG motif in hnRNP G has previously been associated with Shashi syndrome, however involvement of other hnRNP G domains in intellectual disability remain unknown. In the current study, we present the underlying genetic and molecular cause of Gustavson syndrome. Gustavson syndrome was first reported in 1993 in a large Swedish five-generation family presented with profound X-linked intellectual disability and an early death. Extensive genomic analyses of the family revealed hemizygosity for a novel in-frame deletion in RBMX in affected individuals (NM_002139.4; c.484_486del, p.(Pro162del)). Carrier females were asymptomatic and presented with skewed X-chromosome inactivation, indicating silencing of the pathogenic allele. Affected individuals presented minor phenotypic overlap with Shashi syndrome, indicating a different disease-causing mechanism. Investigation of the variant effect in a neuronal cell line (SH-SY5Y) revealed differentially expressed genes enriched for transcription factors involved in RNA polymerase II transcription. Prediction tools and a fluorescence polarization assay imply a novel SH3-binding motif of hnRNP G, and potentially a reduced affinity to SH3 domains caused by the deletion. In conclusion, we present a novel in-frame deletion in RBMX segregating with Gustavson syndrome, leading to disturbed RNA polymerase II transcription, and potentially reduced SH3 binding. The results indicate that disruption of different protein domains affects the severity of RBMX-associated intellectual disabilities., Funding Agencies|Uppsala University, Faculty of Medicine, for psychiatric and neurological research; Uppsala University Hospital; Svenska Laekaresaellskapet (SLS); Jeansson foundations; Swedish Society for Medical Research (SSMF); Swedish Research Council [2020-04395]; Knut and Alice Wallenberg Foundation; Saevstaholm Foundation; Uppsala University
- Published
- 2023
- Full Text
- View/download PDF
37. Gustavson syndrome is caused by an in-frame deletion in RBMX associated with potentially disturbed SH3 domain interactions
- Abstract
RNA binding motif protein X-linked (RBMX) encodes the heterogeneous nuclear ribonucleoprotein G (hnRNP G) that regulates splicing, sister chromatid cohesion and genome stability. RBMX knock down experiments in various model organisms highlight the genes importance for brain development. Deletion of the RGG/RG motif in hnRNP G has previously been associated with Shashi syndrome, however involvement of other hnRNP G domains in intellectual disability remain unknown. In the current study, we present the underlying genetic and molecular cause of Gustavson syndrome. Gustavson syndrome was first reported in 1993 in a large Swedish five-generation family presented with profound X-linked intellectual disability and an early death. Extensive genomic analyses of the family revealed hemizygosity for a novel in-frame deletion in RBMX in affected individuals (NM_002139.4; c.484_486del, p.(Pro162del)). Carrier females were asymptomatic and presented with skewed X-chromosome inactivation, indicating silencing of the pathogenic allele. Affected individuals presented minor phenotypic overlap with Shashi syndrome, indicating a different disease-causing mechanism. Investigation of the variant effect in a neuronal cell line (SH-SY5Y) revealed differentially expressed genes enriched for transcription factors involved in RNA polymerase II transcription. Prediction tools and a fluorescence polarization assay imply a novel SH3-binding motif of hnRNP G, and potentially a reduced affinity to SH3 domains caused by the deletion. In conclusion, we present a novel in-frame deletion in RBMX segregating with Gustavson syndrome, leading to disturbed RNA polymerase II transcription, and potentially reduced SH3 binding. The results indicate that disruption of different protein domains affects the severity of RBMX-associated intellectual disabilities., Funding Agencies|Uppsala University, Faculty of Medicine, for psychiatric and neurological research; Uppsala University Hospital; Svenska Laekaresaellskapet (SLS); Jeansson foundations; Swedish Society for Medical Research (SSMF); Swedish Research Council [2020-04395]; Knut and Alice Wallenberg Foundation; Saevstaholm Foundation; Uppsala University
- Published
- 2023
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- View/download PDF
38. Advanced variant classification framework reduces the false positive rate of predicted loss-of-function variants in population sequencing data
- Abstract
Predicted loss of function (pLoF) variants are often highly deleterious and play an important role in disease biology, but many pLoF variants may not result in loss of function (LoF). Here we present a framework that advances interpretation of pLoF variants in research and clinical settings by considering three categories of LoF evasion: (1) predicted rescue by secondary sequence properties, (2) uncertain biological relevance, and (3) potential technical artifacts. We also provide recommendations on adjustments to ACMG/AMP guidelines’ PVS1 criterion. Applying this framework to all high-confidence pLoF variants in 22 genes associated with autosomal-recessive disease from the Genome Aggregation Database (gnomAD v.2.1.1) revealed predicted LoF evasion or potential artifacts in 27.3% (304/1,113) of variants. The major reasons were location in the last exon, in a homopolymer repeat, in a low proportion expressed across transcripts (pext) scored region, or the presence of cryptic in-frame splice rescues. Variants predicted to evade LoF or to be potential artifacts were enriched for ClinVar benign variants. PVS1 was downgraded in 99.4% (162/163) of pLoF variants predicted as likely not LoF/not LoF, with 17.2% (28/163) downgraded as a result of our framework, adding to previous guidelines. Variant pathogenicity was affected (mostly from likely pathogenic to VUS) in 20 (71.4%) of these 28 variants. This framework guides assessment of pLoF variants beyond standard annotation pipelines and substantially reduces false positive rates, which is key to ensure accurate LoF variant prediction in both a research and clinical setting., QC 20230913
- Published
- 2023
- Full Text
- View/download PDF
39. A novel quantitative targeted analysis of X-chromosome Inactivation (XCI) using Nanopore sequencing
- Abstract
X-chromosome inactivation (XCI) analyses often assist in diagnostics of X-linked traits, however accurate assessment remains challenging with current methods. We developed a novel strategy using amplification-free Cas9 enrichment and Oxford nanopore technologies sequencing called XCI-ONT, to investigate and rigorously quantify XCI in human androgen receptor gene (AR) and human X-linked retinitis pigmentosa 2 gene (RP2). XCI-ONT measures methylation over 116 CpGs in AR and 58 CpGs in RP2, and separate parental X-chromosomes without PCR bias. We show the usefulness of the XCI-ONT strategy over the PCR-based golden standard XCI technique that only investigates one or two CpGs per gene. The results highlight the limitations of using the golden standard technique when the XCI pattern is partially skewed and the advantages of XCI-ONT to rigorously quantify XCI. This study provides a universal XCI-method on DNA, which is highly valuable in clinical and research framework of X-linked traits.
- Published
- 2023
- Full Text
- View/download PDF
40. A novel quantitative targeted analysis of X-chromosome Inactivation (XCI) using Nanopore sequencing
- Abstract
X-chromosome inactivation (XCI) analyses often assist in diagnostics of X-linked traits, however accurate assessment remains challenging with current methods. We developed a novel strategy using amplification-free Cas9 enrichment and Oxford nanopore technologies sequencing called XCI-ONT, to investigate and rigorously quantify XCI in human androgen receptor gene (AR) and human X-linked retinitis pigmentosa 2 gene (RP2). XCI-ONT measures methylation over 116 CpGs in AR and 58 CpGs in RP2, and separate parental X-chromosomes without PCR bias. We show the usefulness of the XCI-ONT strategy over the PCR-based golden standard XCI technique that only investigates one or two CpGs per gene. The results highlight the limitations of using the golden standard technique when the XCI pattern is partially skewed and the advantages of XCI-ONT to rigorously quantify XCI. This study provides a universal XCI-method on DNA, which is highly valuable in clinical and research framework of X-linked traits.
- Published
- 2023
- Full Text
- View/download PDF
41. A novel quantitative targeted analysis of X-chromosome Inactivation (XCI) using Nanopore sequencing
- Abstract
X-chromosome inactivation (XCI) analyses often assist in diagnostics of X-linked traits, however accurate assessment remains challenging with current methods. We developed a novel strategy using amplification-free Cas9 enrichment and Oxford nanopore technologies sequencing called XCI-ONT, to investigate and rigorously quantify XCI in human androgen receptor gene (AR) and human X-linked retinitis pigmentosa 2 gene (RP2). XCI-ONT measures methylation over 116 CpGs in AR and 58 CpGs in RP2, and separate parental X-chromosomes without PCR bias. We show the usefulness of the XCI-ONT strategy over the PCR-based golden standard XCI technique that only investigates one or two CpGs per gene. The results highlight the limitations of using the golden standard technique when the XCI pattern is partially skewed and the advantages of XCI-ONT to rigorously quantify XCI. This study provides a universal XCI-method on DNA, which is highly valuable in clinical and research framework of X-linked traits.
- Published
- 2023
- Full Text
- View/download PDF
42. A novel quantitative targeted analysis of X-chromosome Inactivation (XCI) using Nanopore sequencing
- Abstract
X-chromosome inactivation (XCI) analyses often assist in diagnostics of X-linked traits, however accurate assessment remains challenging with current methods. We developed a novel strategy using amplification-free Cas9 enrichment and Oxford nanopore technologies sequencing called XCI-ONT, to investigate and rigorously quantify XCI in human androgen receptor gene (AR) and human X-linked retinitis pigmentosa 2 gene (RP2). XCI-ONT measures methylation over 116 CpGs in AR and 58 CpGs in RP2, and separate parental X-chromosomes without PCR bias. We show the usefulness of the XCI-ONT strategy over the PCR-based golden standard XCI technique that only investigates one or two CpGs per gene. The results highlight the limitations of using the golden standard technique when the XCI pattern is partially skewed and the advantages of XCI-ONT to rigorously quantify XCI. This study provides a universal XCI-method on DNA, which is highly valuable in clinical and research framework of X-linked traits.
- Published
- 2023
- Full Text
- View/download PDF
43. Gustavson syndrome is caused by an in-frame deletion in RBMX associated with potentially disturbed SH3 domain interactions
- Abstract
RNA binding motif protein X-linked (RBMX) encodes the heterogeneous nuclear ribonucleoprotein G (hnRNP G) that regulates splicing, sister chromatid cohesion and genome stability. RBMX knock down experiments in various model organisms highlight the genes importance for brain development. Deletion of the RGG/RG motif in hnRNP G has previously been associated with Shashi syndrome, however involvement of other hnRNP G domains in intellectual disability remain unknown. In the current study, we present the underlying genetic and molecular cause of Gustavson syndrome. Gustavson syndrome was first reported in 1993 in a large Swedish five-generation family presented with profound X-linked intellectual disability and an early death. Extensive genomic analyses of the family revealed hemizygosity for a novel in-frame deletion in RBMX in affected individuals (NM_002139.4; c.484_486del, p.(Pro162del)). Carrier females were asymptomatic and presented with skewed X-chromosome inactivation, indicating silencing of the pathogenic allele. Affected individuals presented minor phenotypic overlap with Shashi syndrome, indicating a different disease-causing mechanism. Investigation of the variant effect in a neuronal cell line (SH-SY5Y) revealed differentially expressed genes enriched for transcription factors involved in RNA polymerase II transcription. Prediction tools and a fluorescence polarization assay imply a novel SH3-binding motif of hnRNP G, and potentially a reduced affinity to SH3 domains caused by the deletion. In conclusion, we present a novel in-frame deletion in RBMX segregating with Gustavson syndrome, leading to disturbed RNA polymerase II transcription, and potentially reduced SH3 binding. The results indicate that disruption of different protein domains affects the severity of RBMX-associated intellectual disabilities., Funding Agencies|Uppsala University, Faculty of Medicine, for psychiatric and neurological research; Uppsala University Hospital; Svenska Laekaresaellskapet (SLS); Jeansson foundations; Swedish Society for Medical Research (SSMF); Swedish Research Council [2020-04395]; Knut and Alice Wallenberg Foundation; Saevstaholm Foundation; Uppsala University
- Published
- 2023
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44. A novel quantitative targeted analysis of X-chromosome Inactivation (XCI) using Nanopore sequencing
- Abstract
X-chromosome inactivation (XCI) analyses often assist in diagnostics of X-linked traits, however accurate assessment remains challenging with current methods. We developed a novel strategy using amplification-free Cas9 enrichment and Oxford nanopore technologies sequencing called XCI-ONT, to investigate and rigorously quantify XCI in human androgen receptor gene (AR) and human X-linked retinitis pigmentosa 2 gene (RP2). XCI-ONT measures methylation over 116 CpGs in AR and 58 CpGs in RP2, and separate parental X-chromosomes without PCR bias. We show the usefulness of the XCI-ONT strategy over the PCR-based golden standard XCI technique that only investigates one or two CpGs per gene. The results highlight the limitations of using the golden standard technique when the XCI pattern is partially skewed and the advantages of XCI-ONT to rigorously quantify XCI. This study provides a universal XCI-method on DNA, which is highly valuable in clinical and research framework of X-linked traits.
- Published
- 2023
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45. Loss of Nexilin function leads to a recessive lethal fetal cardiomyopathy characterized by cardiomegaly and endocardial fibroelastosis
- Abstract
The Nexilin F-Actin Binding Protein (Nexilin) encoded by NEXN is a cardiac Z-disc protein important for cardiac function and development in humans, zebrafish, and mice. Heterozygote variants in the human NEXN gene have been reported to cause dilated and hypertrophic cardiomyopathy. Homozygous variants in NEXN cause a lethal form of human fetal cardiomyopathy, only described in two patients before. In a Swedish, four-generation, non-consanguineous family comprising 42 individuals, one female had three consecutive pregnancies with intrauterine fetal deaths caused by a lethal form of dilated cardiomyopathy. Whole-exome sequencing and variant analysis revealed that the affected fetuses were homozygous for a NEXN variant (NM_144573:c.1302del;p.(Ile435Serfs*3)). Moreover, autopsy and histology staining declared that they presented with cardiomegaly and endocardial fibroelastosis. Immunohistochemistry staining for Nexilin in the affected fetuses revealed reduced antibody staining and loss of striation in the heart, supporting loss of Nexilin function. Clinical examination of seven heterozygote carriers confirmed dilated cardiomyopathy (two individuals), other cardiac findings (three individuals), or no cardiac deviations (two individuals), indicating incomplete penetrance or age-dependent expression of dilated cardiomyopathy. RNA sequencing spanning the variant in cDNA blood of heterozygote individuals revealed nonsense-mediated mRNA decay of the mutated transcripts. In the current study, we present the first natural course of the recessively inherited lethal form of human fetal cardiomyopathy caused by loss of Nexilin function. The affected family had uneventful pregnancies until week 23-24, followed by fetal death at week 24-30, characterized by cardiomegaly and endocardial fibroelastosis.
- Published
- 2022
- Full Text
- View/download PDF
46. Intresset för lövplantor hos Södra skogsägarnas medlemmar i Oskarströms verksamhetsområde
- Abstract
Lövskogarna var för 200 – 300 år sedan överexploaterade i södra Sverige och förekommer idag främst i mindre och fragmenterade områden. Efterfrågan på barrsågtimmer från industrierna steg och på de tidigare lövbevuxna markerna planterades istället gran och tall. Detta resulterade i att lövträden aktivt började rensas bort med herbicider som t.ex. Hormoslyr. Idag har lövträden en större betydelse i skogarna och framtiden ser mer positiv ut tack vare t.ex. certifieringar, ny teknik, biologisk mångfald, rekreation och ur en klimatsynpunkt. Den positiva trenden syns hos markägare då fler värnar om lövträden och i olika utsträckning väljer att satsa på dem. En tydlig indikator är den ökade försäljningen och en högre efterfrågan av lövplantor, som bl.a. setts hos Södra skogsplantor. Syftet med studien är att undersöka de främsta faktorerna som styr intresset hos markägare till att plantera lövträd, och hur skogsinspektorerna upplever intresse för lövträd bland markägarna. Undersökningen har utförts genom litteraturstudier, en enkätundersökning riktad till markägare samt intervjuer med markägare och skogsinspektorer. Enkätundersökningen och intervjuerna riktade sig till Södra skogsägarnas medlemmar som beställt lövplantor från Södra skogsplantor. Skogsinspektorerna som intervjuades var verksamma vid Södras verksamhetsområde i Oskarström. I litteraturstudien söktes relevant information om lövträd och lövplantor huvudsakligen i databasen Primo. Enligt resultatet från enkäten och intervjuerna var de främsta anledningarna till att markägarna valt att plantera lövplantor natur- och landskapsvård samt klimatpåverkan. Anledningen till att det är viktigt för markägarna med lövträd handlar bland annat om en förhoppning att lövinblandningen skapar en skog som är mer beständig mot storm, torka, rotröta etc. Andra faktorer som visade sig ha stor betydelse var ståndortsanpassning, miljöhänsyn, produktionsmål, rekreation och nyfikenhet. I de flesta fall planterades det triviallöv följt a, 200 – 300 years ago the broad-leaved forests were overexploited in southern Sweden and today they only exist in smaller fragmented sites (area). The demand for timber from the industries increased and the earlier broad-leaved forests were instead planted with the fast-growing tree species such as spruce and pine which led to broad-leaved trees being cleared away with the herbicide Hormoslyr. Today broad-leaved trees have a bigger importance in the Swedish forests and the future looks brighter thanks to for example the certification, new technique, biodiversity, recreation and from a climate perspective. Among landowners there is a vaguely positive trend seen where it's more common to enshrine broad-leaved trees and in different ways of extension choosing to invest in broad-leaved trees. A clear indicator is a higher sale and increased demand for broad-leaved trees in Södra nursery. The aim with the survey is to investigate the prime factors that direct the interest among landowners to plant broad-leaved trees and how inspectors experience the interests for broad-leaved trees among landowners. The survey have been conducted by a literature study, a questionnaire survey with landowners and interviews with landowners and inspectors. The survey study and the interviews were addressed to Södras members that had ordered broad-leaved plants from Södra nursery and the interviews were done with the inspectors in Södras area of operation in Oskarström. In the literature study relevant information about broad-leaved trees was searched mainly in the databases Primo and Google Scholar. According to the results of the questionnaire survey and the interviews, the main factors why landowners chose to plant broad-leaved plants were nature and landscape conservation and climate impact. The reason why broad-leaved trees were important for landowners is for example a hope that an increased amount of broad-leaved trees will create a forest that is more resistant to storms, droughts and
- Published
- 2022
47. Loss of Nexilin function leads to a recessive lethal fetal cardiomyopathy characterized by cardiomegaly and endocardial fibroelastosis
- Abstract
The Nexilin F-Actin Binding Protein (Nexilin) encoded by NEXN is a cardiac Z-disc protein important for cardiac function and development in humans, zebrafish, and mice. Heterozygote variants in the human NEXN gene have been reported to cause dilated and hypertrophic cardiomyopathy. Homozygous variants in NEXN cause a lethal form of human fetal cardiomyopathy, only described in two patients before. In a Swedish, four-generation, non-consanguineous family comprising 42 individuals, one female had three consecutive pregnancies with intrauterine fetal deaths caused by a lethal form of dilated cardiomyopathy. Whole-exome sequencing and variant analysis revealed that the affected fetuses were homozygous for a NEXN variant (NM_144573:c.1302del;p.(Ile435Serfs*3)). Moreover, autopsy and histology staining declared that they presented with cardiomegaly and endocardial fibroelastosis. Immunohistochemistry staining for Nexilin in the affected fetuses revealed reduced antibody staining and loss of striation in the heart, supporting loss of Nexilin function. Clinical examination of seven heterozygote carriers confirmed dilated cardiomyopathy (two individuals), other cardiac findings (three individuals), or no cardiac deviations (two individuals), indicating incomplete penetrance or age-dependent expression of dilated cardiomyopathy. RNA sequencing spanning the variant in cDNA blood of heterozygote individuals revealed nonsense-mediated mRNA decay of the mutated transcripts. In the current study, we present the first natural course of the recessively inherited lethal form of human fetal cardiomyopathy caused by loss of Nexilin function. The affected family had uneventful pregnancies until week 23-24, followed by fetal death at week 24-30, characterized by cardiomegaly and endocardial fibroelastosis.
- Published
- 2022
- Full Text
- View/download PDF
48. Loss of Nexilin function leads to a recessive lethal fetal cardiomyopathy characterized by cardiomegaly and endocardial fibroelastosis
- Abstract
The Nexilin F-Actin Binding Protein (Nexilin) encoded by NEXN is a cardiac Z-disc protein important for cardiac function and development in humans, zebrafish, and mice. Heterozygote variants in the human NEXN gene have been reported to cause dilated and hypertrophic cardiomyopathy. Homozygous variants in NEXN cause a lethal form of human fetal cardiomyopathy, only described in two patients before. In a Swedish, four-generation, non-consanguineous family comprising 42 individuals, one female had three consecutive pregnancies with intrauterine fetal deaths caused by a lethal form of dilated cardiomyopathy. Whole-exome sequencing and variant analysis revealed that the affected fetuses were homozygous for a NEXN variant (NM_144573:c.1302del;p.(Ile435Serfs*3)). Moreover, autopsy and histology staining declared that they presented with cardiomegaly and endocardial fibroelastosis. Immunohistochemistry staining for Nexilin in the affected fetuses revealed reduced antibody staining and loss of striation in the heart, supporting loss of Nexilin function. Clinical examination of seven heterozygote carriers confirmed dilated cardiomyopathy (two individuals), other cardiac findings (three individuals), or no cardiac deviations (two individuals), indicating incomplete penetrance or age-dependent expression of dilated cardiomyopathy. RNA sequencing spanning the variant in cDNA blood of heterozygote individuals revealed nonsense-mediated mRNA decay of the mutated transcripts. In the current study, we present the first natural course of the recessively inherited lethal form of human fetal cardiomyopathy caused by loss of Nexilin function. The affected family had uneventful pregnancies until week 23-24, followed by fetal death at week 24-30, characterized by cardiomegaly and endocardial fibroelastosis.
- Published
- 2022
- Full Text
- View/download PDF
49. Loss of Nexilin function leads to a recessive lethal fetal cardiomyopathy characterized by cardiomegaly and endocardial fibroelastosis
- Abstract
The Nexilin F-Actin Binding Protein (Nexilin) encoded by NEXN is a cardiac Z-disc protein important for cardiac function and development in humans, zebrafish, and mice. Heterozygote variants in the human NEXN gene have been reported to cause dilated and hypertrophic cardiomyopathy. Homozygous variants in NEXN cause a lethal form of human fetal cardiomyopathy, only described in two patients before. In a Swedish, four-generation, non-consanguineous family comprising 42 individuals, one female had three consecutive pregnancies with intrauterine fetal deaths caused by a lethal form of dilated cardiomyopathy. Whole-exome sequencing and variant analysis revealed that the affected fetuses were homozygous for a NEXN variant (NM_144573:c.1302del;p.(Ile435Serfs*3)). Moreover, autopsy and histology staining declared that they presented with cardiomegaly and endocardial fibroelastosis. Immunohistochemistry staining for Nexilin in the affected fetuses revealed reduced antibody staining and loss of striation in the heart, supporting loss of Nexilin function. Clinical examination of seven heterozygote carriers confirmed dilated cardiomyopathy (two individuals), other cardiac findings (three individuals), or no cardiac deviations (two individuals), indicating incomplete penetrance or age-dependent expression of dilated cardiomyopathy. RNA sequencing spanning the variant in cDNA blood of heterozygote individuals revealed nonsense-mediated mRNA decay of the mutated transcripts. In the current study, we present the first natural course of the recessively inherited lethal form of human fetal cardiomyopathy caused by loss of Nexilin function. The affected family had uneventful pregnancies until week 23-24, followed by fetal death at week 24-30, characterized by cardiomegaly and endocardial fibroelastosis.
- Published
- 2022
- Full Text
- View/download PDF
50. Loss of Nexilin function leads to a recessive lethal fetal cardiomyopathy characterized by cardiomegaly and endocardial fibroelastosis
- Abstract
The Nexilin F-Actin Binding Protein (Nexilin) encoded by NEXN is a cardiac Z-disc protein important for cardiac function and development in humans, zebrafish, and mice. Heterozygote variants in the human NEXN gene have been reported to cause dilated and hypertrophic cardiomyopathy. Homozygous variants in NEXN cause a lethal form of human fetal cardiomyopathy, only described in two patients before. In a Swedish, four-generation, non-consanguineous family comprising 42 individuals, one female had three consecutive pregnancies with intrauterine fetal deaths caused by a lethal form of dilated cardiomyopathy. Whole-exome sequencing and variant analysis revealed that the affected fetuses were homozygous for a NEXN variant (NM_144573:c.1302del;p.(Ile435Serfs*3)). Moreover, autopsy and histology staining declared that they presented with cardiomegaly and endocardial fibroelastosis. Immunohistochemistry staining for Nexilin in the affected fetuses revealed reduced antibody staining and loss of striation in the heart, supporting loss of Nexilin function. Clinical examination of seven heterozygote carriers confirmed dilated cardiomyopathy (two individuals), other cardiac findings (three individuals), or no cardiac deviations (two individuals), indicating incomplete penetrance or age-dependent expression of dilated cardiomyopathy. RNA sequencing spanning the variant in cDNA blood of heterozygote individuals revealed nonsense-mediated mRNA decay of the mutated transcripts. In the current study, we present the first natural course of the recessively inherited lethal form of human fetal cardiomyopathy caused by loss of Nexilin function. The affected family had uneventful pregnancies until week 23-24, followed by fetal death at week 24-30, characterized by cardiomegaly and endocardial fibroelastosis.
- Published
- 2022
- Full Text
- View/download PDF
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