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Investigation of common, low-frequency and rare genome-wide variation in anorexia nervosa

Huckins, LM (author)
Hatzikotoulas, K (author)
Southam, L (author)
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Thornton, LM (author)
Steinberg, J (author)
Aguilera-McKay, F (author)
Treasure, J (author)
Schmidt, U (author)
Gunasinghe, C (author)
Romero, A (author)
Curtis, C (author)
Rhodes, D (author)
Moens, J (author)
Kalsi, G (author)
Dempster, D (author)
Leung, R (author)
Keohane, A (author)
Burghardt, R (author)
Ehrlich, S (author)
Hebebrand, J (author)
Hinney, A (author)
Ludolph, A (author)
Walton, E (author)
Deloukas, P (author)
Hofman, A (author)
Palotie, A (author)
Palta, P (author)
van Rooij, FJA (author)
Stirrups, K (author)
Adan, R (author)
Boni, C (author)
Cone, R (author)
Dedoussis, G (author)
van Furth, E (author)
Gonidakis, F (author)
Gorwood, P (author)
Hudson, J (author)
Kaprio, J (author)
Kas, M (author)
Keski-Rahonen, A (author)
Kiezebrink, K (author)
Knudsen, GP (author)
Slof-Op 't Landt, MCT (author)
Maj, M (author)
Monteleone, AM (author)
Monteleone, P (author)
Raevuori, AH (author)
Reichborn-Kjennerud, T (author)
Tozzi, F (author)
Tsitsika, A (author)
van Elburg, A (author)
Collier, DA (author)
Sullivan, PF (author)
Karolinska Institutet
Breen, G (author)
Bulik, CM (author)
Karolinska Institutet
Zeggini, E (author)
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 (creator_code:org_t)
2017-07-25
2018
English.
In: Molecular psychiatry. - : Springer Science and Business Media LLC. - 1476-5578 .- 1359-4184. ; 23:5, s. 1169-1180
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • Anorexia nervosa (AN) is a complex neuropsychiatric disorder presenting with dangerously low body weight, and a deep and persistent fear of gaining weight. To date, only one genome-wide significant locus associated with AN has been identified. We performed an exome-chip based genome-wide association studies (GWAS) in 2158 cases from nine populations of European origin and 15 485 ancestrally matched controls. Unlike previous studies, this GWAS also probed association in low-frequency and rare variants. Sixteen independent variants were taken forward for in silico and de novo replication (11 common and 5 rare). No findings reached genome-wide significance. Two notable common variants were identified: rs10791286, an intronic variant in OPCML (P=9.89 × 10−6), and rs7700147, an intergenic variant (P=2.93 × 10−5). No low-frequency variant associations were identified at genome-wide significance, although the study was well-powered to detect low-frequency variants with large effect sizes, suggesting that there may be no AN loci in this genomic search space with large effect sizes.

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