Partitioning the heritability of Tourette syndrome and obsessive compulsive disorder reveals differences in genetic architecture.
- Authors
- Davis, Lea K; Yu, Dongmei; Keenan, Clare L; Gamazon, Eric R; Konkashbaev, Anuar I; Derks, Eske M; Neale, Benjamin M; Yang, Jian; Lee, S Hong; Evans, Patrick; Barr, Cathy L; Bellodi, Laura; Benarroch, Fortu; Berrio, Gabriel Bedoya; Bienvenu, Oscar J; Bloch, Michael H; Blom, Rianne M; Bruun, Ruth D; Budman, Cathy L; Camarena, Beatriz; Campbell, Desmond; Cappi, Carolina; Cardona Silgado, Julio C; Cath, Danielle C; Cavallini, Maria C; Chavira, Denise A; Chouinard, Sylvain; Conti, David V; Cook, Edwin H; Coric, Vladimir; Cullen, Bernadette A; Deforce, Dieter; Delorme, Richard; Dion, Yves; Edlund, Christopher K; Egberts, Karin; Falkai, Peter; Fernandez, Thomas V; Gallagher, Patience J; Garrido, Helena; Geller, Daniel; Girard, Simon L; Grabe, Hans J; Grados, Marco A; Greenberg, Benjamin D; Gross-Tsur, Varda; Haddad, Stephen; Heiman, Gary A; Hemmings, Sian M J; Hounie, Ana G; Illmann, Cornelia; Jankovic, Joseph; Jenike, Michael A; Kennedy, James L; King, Robert A; Kremeyer, Barbara; Kurlan, Roger; Lanzagorta, Nuria; Leboyer, Marion; Leckman, James F; Lennertz, Leonhard; Liu, Chunyu; Lochner, Christine; Lowe, Thomas L; Macciardi, Fabio; McCracken, James T; McGrath, Lauren M; Mesa Restrepo, Sandra C; Moessner, Rainald; Morgan, Jubel; Muller, Heike; Murphy, Dennis L; Naarden, Allan L; Ochoa, William Cornejo; Ophoff, Roel A; Osiecki, Lisa; Pakstis, Andrew J; Pato, Michele T; Pato, Carlos N; Piacentini, John; Pittenger, Christopher; Pollak, Yehuda; Rauch, Scott L; Renner, Tobias J; Reus, Victor I; Richter, Margaret A; Riddle, Mark A; Robertson, Mary M; Romero, Roxana; RosΓ rio, Maria C; Rosenberg, David; Rouleau, Guy A; Ruhrmann, Stephan; Ruiz-Linares, Andres; Sampaio, Aline S; Samuels, Jack; Sandor, Paul; Sheppard, Brooke; Singer, Harvey S; Smit, Jan H; Stein, Dan J; Strengman, E; Tischfield, Jay A; Valencia Duarte, Ana V; Vallada, Homero; Van Nieuwerburgh, Filip; Veenstra-Vanderweele, Jeremy; Walitza, Susanne; Wang, Ying; Wendland, Jens R; Westenberg, Herman G M; Shugart, Yin Yao; Miguel, Euripedes C; McMahon, William; Wagner, Michael; Nicolini, Humberto; Posthuma, Danielle; Hanna, Gregory L; Heutink, Peter; Denys, Damiaan; Arnold, Paul D; Oostra, Ben A; Nestadt, Gerald; Freimer, Nelson B; Pauls, David L; Wray, Naomi R; Stewart, S Evelyn; Mathews, Carol A; Knowles, James A; Cox, Nancy J; Scharf, Jeremiah M
- Year
- 2013
- Journal
- PLoS genetics
- PMID
- 24204291
- DOI
- 10.1371/journal.pgen.1003864
- PMCID
- PMC3812053
The direct estimation of heritability from genome-wide common variant data as implemented in the program Genome-wide Complex Trait Analysis (GCTA) has provided a means to quantify heritability attributable to all interrogated variants. We have quantified the variance in liability to disease explained by all SNPs for two phenotypically-related neurobehavioral disorders, obsessive-compulsive disorder (OCD) and Tourette Syndrome (TS), using GCTA. Our analysis yielded a heritability point estimate of 0.58 (se = 0.09, p = 5.64e-12) for TS, and 0.37 (se = 0.07, p = 1.5e-07) for OCD. In addition, we conducted multiple genomic partitioning analyses to identify genomic elements that concentrate this heritability. We examined genomic architectures of TS and OCD by chromosome, MAF bin, and functional annotations. In addition, we assessed heritability for early onset and adult onset OCD. Among other notable results, we found that SNPs with a minor allele frequency of less than 5% accounted for 21% of the TS heritability and 0% of the OCD heritability. Additionally, we identified a significant contribution to TS and OCD heritability by variants significantly associated with gene expression in two regions of the brain (parietal cortex and cerebellum) for which we had available expression quantitative trait loci (eQTLs). Finally we analyzed the genetic correlation between TS and OCD, revealing a genetic correlation of 0.41 (se = 0.15, p = 0.002). These results are very close to previous heritability estimates for TS and OCD based on twin and family studies, suggesting that very little, if any, heritability is truly missing (i.e., unassayed) from TS and OCD GWAS studies of common variation. The results also indicate that there is some genetic overlap between these two phenotypically-related neuropsychiatric disorders, but suggest that the two disorders have distinct genetic architectures.
Tourette Syndrome heritability by chromosome.Heritability (y-axis) per chromosome is plotted against chromosome length (x-axis). The red line represents heritability regressed on chromosome length and the 95% confidence interval around the slope of the regression model is represented by the red dashed lines. The black line represents the expected heritability per chromosome (based on size) regressed on chromosome length. Chromosomes 2, 5, 11, 12, 16, and 20 fall outside of the 95% confidence interval and appear to account for more heritability than expected based on chromosome length.
LLM interpretation
This scatter plot shows Tourette Syndrome (TS) heritability plotted against chromosome length (Mb). A red regression line with a 95% confidence interval (dashed red lines) represents the observed heritability, while a black line represents the expected heritability based on chromosome size. Chromosomes 2, 5, 11, 12, 16, and 20 are positioned above the confidence interval, indicating higher than expected heritability.
Obsessive-compulsive disorder heritability by chromosome.Heritability (y-axis) per chromosome is plotted against chromosome length (x-axis). The red line represents heritability regressed on chromosome length and the 95% confidence interval around the slope of the regression model is represented by the red dashed lines. The black line represents the expected heritability per chromosome (based on size) regressed on chromosome length. Chromosome 15 is shown in red to highlight its extreme deviation from the expected heritability based on chromosome length. Chromosomes 3, 10, 13, and 17 are also outside of the 95% interval and appear to account for more heritability than expected based on chromosome length.
LLM interpretation
This scatter plot shows the heritability of obsessive-compulsive disorder (y-axis) plotted against chromosome length in Mb (x-axis). A black line represents the expected heritability based on size, while a red line and surrounding red dashed lines represent the regression of heritability on length and its 95% confidence interval. Chromosome 15 is highlighted in red as a significant outlier above the confidence interval, with chromosomes 3, 10, 13, and 17 also appearing above the interval.
Heritability by minor allele frequency.The x-axis represents all minor allele frequency bins tested while the y-axis represents resultant heritability in a given bin. Blue bars indicate TS and red bars indicate OCD. Error bars are shown.
LLM interpretation
This bar chart displays heritability across six minor allele frequency (MAF) bins for Tourette Syndrome (TS, blue bars) and Obsessive-Compulsive Disorder (OCD, red bars). The x-axis lists the MAF bins, and the y-axis represents the resultant heritability. TS generally shows higher heritability than OCD in most bins, particularly in the lowest and mid-to-high ranges, though both conditions exhibit substantial overlap in error bars.
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