DNA samples for 11 343 of the children have been collected, and 6902 of these have had a lymphoblastoid cell line transformed to date. The intention is to collect buccal saliva samples from children with no existing DNA data. Genome-wide data have been obtained for 8365 of the children. A list of ∼700 genotypes assayed on the available >10 000 participants with DNA samples are on the ALSPAC website.10 Most of these were obtained before genome-wide data became available, but some represent variants not included or imputable from genome-wide data.
