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--- catslife:instruments:polygenic_scores_pgss [2025/04/16 12:17]
gustavsd [Ancestry and Principal Components]
+++ catslife:instruments:polygenic_scores_pgss [2025/05/14 13:49] (current)
gustavsd
@@ Line 20: / Line 20: @@
 Information about [[https://ibg.colorado.edu/mydms/out/out.ViewDocument.php?documentid=5782 | Genetic Ancestry and Principal Components]] can be downloaded here and can also be found on RC: /pl/active/IBG/data/CATSLife/derived/PGS/
-The "CATSLife_Ancestry_April2025.csv" file includes a few important pieces of information recommended for PGS analyses.
+The current file includes important pieces of information recommended for PGS analyses.
-  * Conversion from genetic IID to study ID needed to merge PGS output with phenotypic information
+  * Conversion from genetic IIDs to standard CATSLife IDs needed to merge PGS output with phenotypic information.
-  * Continental ancestry group. These were determined based on mapping CATSLife data to 1KG Phase 3. EUR, AFR, SAS, and EAS groups were classified if they were within 5 SDs of the population means based on the first 4 principal components. Because there is a lot more variability in the AMR (American) group, this based on 2 SDs on the first 4 principal components and required that they not already be classified in one of the other groups.
+  * Continental ancestry group. These were determined based on mapping CATSLife data to the 1000 Genomes Phase 3 reference panel. EUR (European-like), AFR (African-like), SAS (South Asian-like), and EAS (East Asian-like) groups were classified if they were within 5 SDs of the population means based on the first 4 principal components. Because there is a lot more variability in the AMR (American-like) group, this based on 2 SDs on the first 4 principal components and required that they not already be classified in one of the other groups.
-  * 20 PCs are provided in this datafile. This PCA was run after combining CATSLife with 1KG Phase 3 so these values can be interpreted on the same scale as the 1KG Phase 3 participants.
+  * Two sets of PCs are provided in this datafile. Principal components labeled "PC1", "PC2" (etc.) are derived from a PCA within this sample. Principal components labeled "PC1_1KG", "PC2_1KG" (etc.) are derived from mapping our data onto 1000 Genomes. For polygenic scores involving CATSLife data, it is recommended that you use the within-sample PCs, though there may be exceptions.
@@ Line 29: / Line 29: @@
 ===== READMEs for Computing Polygenic Scores in CATSLife  =====
-[[https://ibg.colorado.edu/mydms/out/out.ViewDocument.php?documentid=5782 | Readme for PRScs]] (citation needed)
+[[ https://ibg.colorado.edu/dokuwiki/lib/exe/fetch.php?media=catslife:instruments:prscs_readme_april2025.pdf | Readme for PRScs]] (Ge et al., 2019)
-Readme for SbayesR (citation needed)
+Readme for SbayesR (Lloyd-Jones et al., 2019)
@@ Line 42: / Line 42: @@
 | Educational Attainment | Okbay 2022 | X | X |
 | Executive Function | Hatoum 2023 | X |  |
-| Impulsivity (3 BIS subscales) | Sanchez-Roige 2023 | X |  |
+| Impulsivity (3 BIS subscales) | Sanchez-Roige 2023 | X* |  |
-| Impulsivity (5 UPPS subscales) | Sanchez-Roige 2023 | X |  |
+| Impulsivity (5 UPPS subscales) | Sanchez-Roige 2023 | X* |  |
 | General Cognitive Ability | Davies 2018 | X |  |
 | Intelligence (Childhood) | Benyamin 2014 | X |  |
 | Neuroticism | Baselmans 2019 | X |  |
+| Frailty | Atkins 2021 | X |  |
+* (Restricted to 23andMe agreement, contact Dan Gustavson & Naomi Friedman)
+[[https://ibg.colorado.edu/mydms/out/out.ViewDocument.php?documentid=5783 | Download merged PGSs computed using PRScs]]
+===== APOE Status =====
+Please see the attached file for current apoe genotype, including the method of determining genotype (imputed vs. genotyped). The current file is updated as of November 2024. Please contact Chandra Reynolds and Daniel Gustavson if you have questions about using these data.
+[[https://ibg.colorado.edu/mydms/out/out.ViewDocument.php?documentid=5788 | CATSLife APOE genotype]]

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