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1. Chromosomal contacts connect loci associated with autism, BMI and head circumference phenotypes

Author

Loviglio MN, Leleu M, Männik K, Passeggeri M, Giannuzzi G, van der Werf I, Waszak SM, Zazhytska M, Roberts-Caldeira I, Gheldof N, Migliavacca E, Alfaiz AA, Hippolyte L, Maillard AM, 2p15 Consortium, 16p112 Consortium, Merla G, Van Dijck A, Kooy RF, Sanlaville D, Rosenfeld JA, Shaffer LG, Andrieux J, Marshall C, Scherer SW, Shen Y, Gusella JF, Thorsteinsdottir U, Thorleifsson G, Dermitzakis ET, Deplancke B, Beckmann JS, Rougemont J, Jacquemont S, Reymond A, Loviglio, Mn, Leleu, M, Männik, K, Passeggeri, M, Giannuzzi, G, van der Werf, I, Waszak, Sm, Zazhytska, M, Roberts-Caldeira, I, Gheldof, N, Migliavacca, E, Alfaiz, Aa, Hippolyte, L, Maillard, Am, 2p15, Consortium, 16p112, Consortium, Merla, G, Van Dijck, A, Kooy, Rf, Sanlaville, D, Rosenfeld, Ja, Shaffer, Lg, Andrieux, J, Marshall, C, Scherer, Sw, Shen, Y, Gusella, Jf, Thorsteinsdottir, U, Thorleifsson, G, Dermitzakis, Et, Deplancke, B, Beckmann, J, Rougemont, J, Jacquemont, S, and Reymond, A

Abstract

Copy number variants (CNVs) are major contributors to genomic imbalance disorders. Phenotyping of 137 unrelated deletion and reciprocal duplication carriers of the distal 16p11.2 220 kb BP2-BP3 interval showed that these rearrangements are associated with autism spectrum disorders and mirror phenotypes of obesity/underweight and macrocephaly/microcephaly. Such phenotypes were previously associated with rearrangements of the non-overlapping proximal 16p11.2 600 kb BP4-BP5 interval. These two CNV-prone regions at 16p11.2 are reciprocally engaged in complex chromatin looping, as successfully confirmed by 4C-seq, fluorescence in situ hybridization and Hi-C, as well as coordinated expression and regulation of encompassed genes. We observed that genes differentially expressed in 16p11.2 BP4-BP5 CNV carriers are concomitantly modified in their chromatin interactions, suggesting that disruption of chromatin interplays could participate in the observed phenotypes. We also identified cis- and trans-acting chromatin contacts to other genomic regions previously associated with analogous phenotypes. For example, we uncovered that individuals with reciprocal rearrangements of the trans-contacted 2p15 locus similarly display mirror phenotypes on head circumference and weight. Our results indicate that chromosomal contacts' maps could uncover functionally and clinically related genes.

Published
2017

2. Chromosomal contacts connect loci associated with autism, BMI and head circumference phenotypes

Author

Loviglio, M. N, Leleu, M., Männik, K., Passeggeri, M., Giannuzzi, G., van der Werf, I., Waszak, S. M., Zazhytska, M., Roberts Caldeira, I., Gheldof, N., Migliavacca, E., Alfaiz, A. A., Hippolyte, L., Maillard, A. M., van Dijck, A., Kooy, R. F., Sanlaville, D., Rosenfeld, J. A., Shaffer, L. G., Andrieux, J., Marshall, C., Scherer, S. W., Shen, Y., Gusella, J. F., Thorsteinsdottir, U., Thorleifsson, G., Dermitzakis, E. T., Deplancke, B., Beckmann, J. S., Rougemont, J., Jacquemont, S., Reymond, A., Collaborators: Loviglio MN, Männik, K, van der Werf, I, Giannuzzi, G, Zazhytska, M, Gheldof, N, Migliavacca, E, Alfaiz, Aa, Roberts Caldeira, I, Hippolyte, L, Maillard, Am, Ferrarini, A, Butschi, Fn, Conrad, B, Addor, Mc, Belfiore, M, Roetzer, K, Dijck, Av, Blaumeiser, B, Kooy, F, Roelens, F, Dheedene, A, Chiaie, Bd, Menten, B, Oostra, A, Caberg, Jh, Carter, M, Kellam, B, Stavropoulos, Dj, Marshall, C, Scherer, Sw, Weksberg, R, Cytrynbaum, C, Bassett, A, Lowther, C, Gillis, J, Mackay, S, Bache, I, Ousager, Lb, Smerdel, Mp, Graakjaer, J, Kjaergaard, S, Metspalu, A, Mathieu, M, Bonneau, D, Guichet, A, Parent, P, Férec, C, Gerard, M, Plessis, G, Lespinasse, J, Masurel, A, Marle, N, Faivre, L, Callier, P, Layet, V, Meur, Nl, Le Goff, C, Duban Bedu, B, Sukno, S, Boute, O, Andrieux, J, Blanchet, P, Geneviève, D, Puechberty, J, Schneider, A, Leheup, B, Jonveaux, P, Mercier, S, David, A, Le Caignec, C, de Pontual, L, Pipiras, E, Jacquette, A, Keren, B, Gilbert Dussardier, B, Bilan, F, Goldenberg, A, Chambon, P, Toutain, A, Till, M, Sanlaville, D, Leube, B, Royer Pokora, B, Grabe, Hj, Schmidt, Co, Schurmann, C, Homuth, G, Thorleifsson, G, Thorsteinsdottir, U, Bernardini, L, Novelli, A, Micale, L, Merla, G, Zollino, M, Mari, Francesca, Rizzo, Cl, Renieri, Alessandra, Silengo, M, Vulto van Silfhout AT, Schouten, M, Pfundt, R, de Leeuw, N, Vansenne, F, Maas, Sm, Barge Schaapveld DQ, Knegt, Ac, Stadheim, B, Rodningen, O, Houge, G, Price, S, Hawkes, L, Campbell, C, Kini, U, Vogt, J, Walters, R, Blakemore, A, Gusella, Jf, Shen, Y, Scott, D, Bacino, Ca, Tsuchiya, K, Ladda, R, Sell, S, Asamoah, A, Hamati, Ai, Rosenfeld, Ja, Shaffer, Lg, Mitchell, E, Hodge, Jc, Beckmann, Js, Jacquemont, S, Reymond, A, Ewans, Lj, Mowat, D, Walker, J, Amor, Dj, Esch, Hv, Leroy, P, Bamforth, Js, Babu, D, Isidor, B, Didonato, N, Hackmann, K, Passeggeri, M, Haeringen, Av, Smith, R, Ellingwood, S, Farber, Dm, Puri, V, Zadeh, N, Weaver, Dd, Miller, M, Wilks, T, Jorgez, Cj, Lafayette, D, Blaumeiser, Bettina, 2p15 Consortium, 16p11.2 Consortium, Loviglio, M.N., Männik, K., van der Werf, I., Giannuzzi, G., Zazhytska, M., Gheldof, N., Migliavacca, E., Alfaiz, A.A., Roberts-Caldeira, I., Hippolyte, L., Maillard, A.M., Ferrarini, A., Butschi, F.N., Conrad, B., Addor, M.C., Belfiore, M., Roetzer, K., Dijck, A.V., Blaumeiser, B., Kooy, F., Roelens, F., Dheedene, A., Chiaie, B.D., Menten, B., Oostra, A., Caberg, J.H., Carter, M., Kellam, B., Stavropoulos, D.J., Marshall, C., Scherer, S.W., Weksberg, R., Cytrynbaum, C., Bassett, A., Lowther, C., Gillis, J., MacKay, S., Bache, I., Ousager, L.B., Smerdel, M.P., Graakjaer, J., Kjaergaard, S., Metspalu, A., Mathieu, M., Bonneau, D., Guichet, A., Parent, P., Férec, C., Gerard, M., Plessis, G., Lespinasse, J., Masurel, A., Marle, N., Faivre, L., Callier, P., Layet, V., Meur, N.L., Le Goff, C., Duban-Bedu, B., Sukno, S., Boute, O., Andrieux, J., Blanchet, P., Geneviève, D., Puechberty, J., Schneider, A., Leheup, B., Jonveaux, P., Mercier, S., David, A., Le Caignec, C., de Pontual, L., Pipiras, E., Jacquette, A., Keren, B., Gilbert-Dussardier, B., Bilan, F., Goldenberg, A., Chambon, P., Toutain, A., Till, M., Sanlaville, D., Leube, B., Royer-Pokora, B., Grabe, H.J., Schmidt, C.O., Schurmann, C., Homuth, G., Thorleifsson, G., Thorsteinsdottir, U., Bernardini, L., Novelli, A., Micale, L., Merla, G., Zollino, M., Mari, F., Rizzo, C.L., Renieri, A., Silengo, M., Vulto-van Silfhout, A.T., Schouten, M., Pfundt, R., de Leeuw, N., Vansenne, F., Maas, S.M., Barge-Schaapveld, D.Q., Knegt, A.C., Stadheim, B., Rodningen, O., Houge, G., Price, S., Hawkes, L., Campbell, C., Kini, U., Vogt, J., Walters, R., Blakemore, A., Gusella, J.F., Shen, Y., Scott, D., Bacino, C.A., Tsuchiya, K., Ladda, R., Sell, S., Asamoah, A., Hamati, A.I., Rosenfeld, J.A., Shaffer, L.G., Mitchell, E., Hodge, J.C., Beckmann, J.S., Jacquemont, S., Reymond, A., Ewans, L.J., Mowat, D., Walker, J., Amor, D.J., Esch, H.V., Leroy, P., Bamforth, J.S., Babu, D., Isidor, B., DiDonato, N., Hackmann, K., Passeggeri, M., Haeringen, A.V., Smith, R., Ellingwood, S., Farber, D.M., Puri, V., Zadeh, N., Weaver, D.D., Miller, M., Wilks, T., Jorgez, C.J., Lafayette, D., Other departments, and Human Genetics

Subjects
0301 basic medicine, Male, Microcephaly, Autism Spectrum Disorder, Obesity/genetics, Settore MED/03 - GENETICA MEDICA, Body Mass Index, Microcephaly/genetics, Gene duplication, Chromosome Duplication, ddc:576.5, Copy-number variation, Child, In Situ Hybridization, In Situ Hybridization, Fluorescence, Genetics, medicine.diagnostic_test, Chromosome Mapping, Middle Aged, Phenotype, Chromatin, Chemistry, Psychiatry and Mental Health, Child, Preschool, Female, Original Article, Chromosomes, Human, Pair 16/genetics, Megalencephaly/genetics, Chromosome Deletion, Autistic Disorder/genetics, Molecular Biology, Cellular and Molecular Neuroscience, Human, Rare cancers Radboud Institute for Health Sciences [Radboudumc 9], Adult, Adolescent, DNA Copy Number Variations, Locus (genetics), DNA Copy Number Variations/genetics, Biology, Aged, Autistic Disorder, Chromosomes, Human, Pair 16, Humans, Infant, Intellectual Disability, Megalencephaly, Obesity, Chromosomes, Fluorescence, Chromatin/metabolism, 03 medical and health sciences, medicine, Preschool, Gene, Neurodevelopmental disorders Donders Center for Medical Neuroscience [Radboudumc 7], Pair 16, medicine.disease, Intellectual Disability/genetics, Autism Spectrum Disorder/genetics, 030104 developmental biology, Human medicine, Chromosome Mapping/methods, Fluorescence in situ hybridization
Abstract

Contains fulltext : 174530.pdf (Publisher’s version ) (Open Access) Copy number variants (CNVs) are major contributors to genomic imbalance disorders. Phenotyping of 137 unrelated deletion and reciprocal duplication carriers of the distal 16p11.2 220 kb BP2-BP3 interval showed that these rearrangements are associated with autism spectrum disorders and mirror phenotypes of obesity/underweight and macrocephaly/microcephaly. Such phenotypes were previously associated with rearrangements of the non-overlapping proximal 16p11.2 600 kb BP4-BP5 interval. These two CNV-prone regions at 16p11.2 are reciprocally engaged in complex chromatin looping, as successfully confirmed by 4C-seq, fluorescence in situ hybridization and Hi-C, as well as coordinated expression and regulation of encompassed genes. We observed that genes differentially expressed in 16p11.2 BP4-BP5 CNV carriers are concomitantly modified in their chromatin interactions, suggesting that disruption of chromatin interplays could participate in the observed phenotypes. We also identified cis- and trans-acting chromatin contacts to other genomic regions previously associated with analogous phenotypes. For example, we uncovered that individuals with reciprocal rearrangements of the trans-contacted 2p15 locus similarly display mirror phenotypes on head circumference and weight. Our results indicate that chromosomal contacts' maps could uncover functionally and clinically related genes.

Published
2015

3. Chromosomal contacts connect loci associated with autism, BMI and head circumference phenotypes

Author

Loviglio, M.N., Leleu, M., Mannik, K., Passeggeri, M., Giannuzzi, G., Werf, I. van der, Waszak, S.M., Zazhytska, M., Roberts-Caldeira, I., Gheldof, N., Migliavacca, E., Alfaiz, A.A., Hippolyte, L., Maillard, A.M., Dijck, A. Van, Kooy, R.F., Sanlaville, D., Rosenfeld, J.A., Shaffer, L.G., Andrieux, J., Marshall, C., Scherer, S.W., Shen, Y., Gusella, J.F., Thorsteinsdottir, U., Thorleifsson, G., Dermitzakis, E.T., Deplancke, B., Beckmann, J.S., Rougemont, J., Jacquemont, S., Reymond, A., Vulto-van Silfhout, A.T., Schouten, M.I., Pfundt, R.P., Leeuw, N. de, et al., Loviglio, M.N., Leleu, M., Mannik, K., Passeggeri, M., Giannuzzi, G., Werf, I. van der, Waszak, S.M., Zazhytska, M., Roberts-Caldeira, I., Gheldof, N., Migliavacca, E., Alfaiz, A.A., Hippolyte, L., Maillard, A.M., Dijck, A. Van, Kooy, R.F., Sanlaville, D., Rosenfeld, J.A., Shaffer, L.G., Andrieux, J., Marshall, C., Scherer, S.W., Shen, Y., Gusella, J.F., Thorsteinsdottir, U., Thorleifsson, G., Dermitzakis, E.T., Deplancke, B., Beckmann, J.S., Rougemont, J., Jacquemont, S., Reymond, A., Vulto-van Silfhout, A.T., Schouten, M.I., Pfundt, R.P., Leeuw, N. de, and et al.

Abstract

Contains fulltext : 174530.pdf (publisher's version ) (Open Access), Copy number variants (CNVs) are major contributors to genomic imbalance disorders. Phenotyping of 137 unrelated deletion and reciprocal duplication carriers of the distal 16p11.2 220 kb BP2-BP3 interval showed that these rearrangements are associated with autism spectrum disorders and mirror phenotypes of obesity/underweight and macrocephaly/microcephaly. Such phenotypes were previously associated with rearrangements of the non-overlapping proximal 16p11.2 600 kb BP4-BP5 interval. These two CNV-prone regions at 16p11.2 are reciprocally engaged in complex chromatin looping, as successfully confirmed by 4C-seq, fluorescence in situ hybridization and Hi-C, as well as coordinated expression and regulation of encompassed genes. We observed that genes differentially expressed in 16p11.2 BP4-BP5 CNV carriers are concomitantly modified in their chromatin interactions, suggesting that disruption of chromatin interplays could participate in the observed phenotypes. We also identified cis- and trans-acting chromatin contacts to other genomic regions previously associated with analogous phenotypes. For example, we uncovered that individuals with reciprocal rearrangements of the trans-contacted 2p15 locus similarly display mirror phenotypes on head circumference and weight. Our results indicate that chromosomal contacts' maps could uncover functionally and clinically related genes.

Published
2017

4. Chromosomal contacts connect loci associated with autism, BMI and head circumference phenotypes

Author

Loviglio, M. N., Leleu, M., Männik, K., Passeggeri, M., Giannuzzi, G., Van Der Werf, I., Waszak, S. M., Zazhytska, M., Roberts-Caldeira, I., Gheldof, N., Migliavacca, E., Alfaiz, A. A., Hippolyte, L., Maillard, A. M., Zollino, Marcella, Van Dijck, A., Kooy, R. F., Sanlaville, D., Rosenfeld, J. A., Shaffer, L. G., Andrieux, J., Marshall, C., Scherer, S. W., Shen, Y., Gusella, J. F., Thorsteinsdottir, U., Thorleifsson, G., Dermitzakis, E. T., Deplancke, B., Beckmann, J. S., Rougemont, J., Jacquemont, S., Reymond, A., Zollino, M. (ORCID:0000-0003-4871-9519), Loviglio, M. N., Leleu, M., Männik, K., Passeggeri, M., Giannuzzi, G., Van Der Werf, I., Waszak, S. M., Zazhytska, M., Roberts-Caldeira, I., Gheldof, N., Migliavacca, E., Alfaiz, A. A., Hippolyte, L., Maillard, A. M., Zollino, Marcella, Van Dijck, A., Kooy, R. F., Sanlaville, D., Rosenfeld, J. A., Shaffer, L. G., Andrieux, J., Marshall, C., Scherer, S. W., Shen, Y., Gusella, J. F., Thorsteinsdottir, U., Thorleifsson, G., Dermitzakis, E. T., Deplancke, B., Beckmann, J. S., Rougemont, J., Jacquemont, S., Reymond, A., and Zollino, M. (ORCID:0000-0003-4871-9519)

Abstract

Copy number variants (CNVs) are major contributors to genomic imbalance disorders. Phenotyping of 137 unrelated deletion and reciprocal duplication carriers of the distal 16p11.2 220 kb BP2-BP3 interval showed that these rearrangements are associated with autism spectrum disorders and mirror phenotypes of obesity/underweight and macrocephaly/microcephaly. Such phenotypes were previously associated with rearrangements of the non-overlapping proximal 16p11.2 600 kb BP4-BP5 interval. These two CNV-prone regions at 16p11.2 are reciprocally engaged in complex chromatin looping, as successfully confirmed by 4C-seq, fluorescence in situ hybridization and Hi-C, as well as coordinated expression and regulation of encompassed genes. We observed that genes differentially expressed in 16p11.2 BP4-BP5 CNV carriers are concomitantly modified in their chromatin interactions, suggesting that disruption of chromatin interplays could participate in the observed phenotypes. We also identified cis- and trans-acting chromatin contacts to other genomic regions previously associated with analogous phenotypes. For example, we uncovered that individuals with reciprocal rearrangements of the trans-contacted 2p15 locus similarly display mirror phenotypes on head circumference and weight. Our results indicate that chromosomal contacts' maps could uncover functionally and clinically related genes.

Published
2017

5. Chromosomal contacts connect loci associated with autism, BMI and head circumference phenotypes

Author

Loviglio, M N, Leleu, M, Männik, K, Passeggeri, M, Giannuzzi, G, van der Werf, I, Waszak, S M, Zazhytska, M, Roberts-Caldeira, I, Gheldof, N, Migliavacca, E, Alfaiz, A A, Hippolyte, L, Maillard, A M, Van Dijck, A, Kooy, R F, Sanlaville, D, Rosenfeld, J A, Shaffer, L G, Andrieux, J, Marshall, C, Scherer, S W, Shen, Y, Gusella, J F, Thorsteinsdottir, U, Thorleifsson, G, Dermitzakis, E T, Deplancke, B, Beckmann, J S, Rougemont, J, Jacquemont, S, and Reymond, A

Abstract

Copy number variants (CNVs) are major contributors to genomic imbalance disorders. Phenotyping of 137 unrelated deletion and reciprocal duplication carriers of the distal 16p11.2 220 kb BP2-BP3 interval showed that these rearrangements are associated with autism spectrum disorders and mirror phenotypes of obesity/underweight and macrocephaly/microcephaly. Such phenotypes were previously associated with rearrangements of the non-overlapping proximal 16p11.2 600 kb BP4-BP5 interval. These two CNV-prone regions at 16p11.2 are reciprocally engaged in complex chromatin looping, as successfully confirmed by 4C-seq, fluorescence in situ hybridization and Hi-C, as well as coordinated expression and regulation of encompassed genes. We observed that genes differentially expressed in 16p11.2 BP4-BP5 CNV carriers are concomitantly modified in their chromatin interactions, suggesting that disruption of chromatin interplays could participate in the observed phenotypes. We also identified cis- and trans-acting chromatin contacts to other genomic regions previously associated with analogous phenotypes. For example, we uncovered that individuals with reciprocal rearrangements of the trans-contacted 2p15 locus similarly display mirror phenotypes on head circumference and weight. Our results indicate that chromosomal contacts’ maps could uncover functionally and clinically related genes.

Published
2017
Full Text
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6. Chromosomal contacts connect loci associated with autism, BMI and head circumference phenotypes

Author

Loviglio, M N, Leleu, M, Männik, K, Passeggeri, M, Giannuzzi, G, Van Der Werf, I, Waszak, S M, Zazhytska, M, Roberts-Caldeira, I, Gheldof, N, Migliavacca, E, Alfaiz, A A, Hippolyte, L, Maillard, A M, Loviglio, Maria Nicla, Männik, Katrin, Van Der Werf, Ilse, Giannuzzi, Giuliana, Zazhytska, Marianna, Gheldof, Nele, Migliavacca, Eugenia, Alfaiz, Ali A, Roberts-Caldeira, Inês, Hippolyte, Loyse, Maillard, Anne M, Ferrarini, Alessandra, Butschi, Florence Niel, Conrad, Bernard, Addor, Marie-Claude, Belfiore, Marco, Roetzer, Katharina, Dijck, Anke Van, Blaumeiser, Bettina, Kooy, Frank, Roelens, Filip, Dheedene, Annelies, Chiaie, Barbara Delle, Menten, Björn, Oostra, Ann, Caberg, Jean-Hubert, Carter, Melissa, Kellam, Barbara, Stavropoulos, Dimitri J, Marshall, Christian, Scherer, Stephen W, Weksberg, Rosanna, Cytrynbaum, Cheryl, Bassett, Anne, Lowther, Chelsea, Gillis, Jane, Mackay, Sara, Bache, Iben, Ousager, Lilian B, Smerdel, Maja Patricia, Graakjaer, Jesper, Kjaergaard, Susanne, Metspalu, Andres, Mathieu, Michele, Bonneau, Dominique, Guichet, Agnes, Parent, Philippe, Férec, Claude, Gerard, Marion, Plessis, Ghislaine, Lespinasse, James, Masurel, Alice, Marle, Nathalie, Faivre, Laurence, Callier, Patrick, Layet, Valerie, Meur, Nathalie Le, Le Goff, Céline, Duban-Bedu, Bénédicte, Sukno, Sylvie, Boute, Odile, Andrieux, Joris, Blanchet, Patricia, Geneviève, David, Puechberty, Jacques, Schneider, Anouck, Leheup, Bruno, Jonveaux, Philippe, Mercier, Sandra, David, Albert, Le Caignec, Cédric, De Pontual, Loic, Pipiras, Eva, Jacquette, Aurelia, Keren, Boris, Gilbert-Dussardier, Brigitte, Bilan, Frederic, Goldenberg, Alice, Chambon, Pascal, Toutain, Annick, Till, Marianne, Sanlaville, Damien, Leube, Barbara, Royer-Pokora, Brigitte, Grabe, Hans Jörgen, Schmidt, Carsten Oliver, Schurmann, Claudia, Homuth, Georg, Thorleifsson, Gudmar, Thorsteinsdottir, Unnur, Bernardini, Laura, Novelli, Antonio, Micale, Lucia, Merla, Giuseppe, Zollino, Marcella, Mari, Francesca, Rizzo, Caterina Lo, Renieri, Alessandra, Silengo, Margherita, Vulto-Van Silfhout, Anneke T, Schouten, Meyke, Pfundt, Rolph, De Leeuw, Nicole, Vansenne, Fleur, Maas, Saskia M, Barge-Schaapveld, Daniela Qcm, Knegt, Alida C, Stadheim, Barbro, Rodningen, Olaug, Houge, Gunnar, Price, Sue, Hawkes, Lara, Campbell, Carolyn, Kini, Usha, Vogt, Julie, Walters, Robin, Blakemore, Alexandra, Gusella, James F, Shen, Yiping, Scott, Daryl, Bacino, Carlos A, Tsuchiya, Karen, Ladda, Roger, Sell, Susan, Asamoah, Alexander, Hamati, Aline I, Rosenfeld, Jill A, Shaffer, Lisa G, Mitchell, Elyse, Hodge, Jennelle C, Beckmann, Jacques S, Jacquemont, Sébastien, Reymond, Alexandre, Ewans, Lisa J, Mowat, David, Walker, Jan, Amor, David J, Esch, Hilde Van, Leroy, Patricia, Bamforth, John-Steven, Babu, Deepti, Isidor, Bertrand, Didonato, Nataliya, Hackmann, Karl, Passeggeri, Marzia, Haeringen, Arie Van, Smith, Rosemarie, Ellingwood, Sara, Farber, Darren M, Puri, Vinay, Zadeh, Neda, Weaver, David D, Miller, Mandy, Wilks, Timothy, Jorgez, Carolina J, Lafayette, Deedee, Van Dijck, A, Kooy, R F, Sanlaville, D, Rosenfeld, J A, Shaffer, L G, Andrieux, J, Marshall, C, Scherer, S W, Shen, Y, Gusella, J F, Thorsteinsdottir, U, Thorleifsson, G, Dermitzakis, E T, Deplancke, B, Beckmann, J S, Rougemont, J, Jacquemont, S, Reymond, A, 2p15 Consortium, and 16p11 2 Consortium

Abstract

Copy number variants (CNVs) are major contributors to genomic imbalance disorders. Phenotyping of 137 unrelated deletion and reciprocal duplication carriers of the distal 16p11.2 220 kb BP2-BP3 interval showed that these rearrangements are associated with autism spectrum disorders and mirror phenotypes of obesity/underweight and macrocephaly/microcephaly. Such phenotypes were previously associated with rearrangements of the non-overlapping proximal 16p11.2 600 kb BP4-BP5 interval. These two CNV-prone regions at 16p11.2 are reciprocally engaged in complex chromatin looping, as successfully confirmed by 4C-seq, fluorescence in situ hybridization and Hi-C, as well as coordinated expression and regulation of encompassed genes. We observed that genes differentially expressed in 16p11.2 BP4-BP5 CNV carriers are concomitantly modified in their chromatin interactions, suggesting that disruption of chromatin interplays could participate in the observed phenotypes. We also identified cis- and trans-acting chromatin contacts to other genomic regions previously associated with analogous phenotypes. For example, we uncovered that individuals with reciprocal rearrangements of the trans-contacted 2p15 locus similarly display mirror phenotypes on head circumference and weight. Our results indicate that chromosomal contacts’ maps could uncover functionally and clinically related genes.

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