DAPL1 and age-related macular degeneration: In a search for additional risk variants at the extended DAPL1 locus, we resequenced over 10 kb of intronic/exonic sequences in each of 12 probands homozygous for AMD risk alleles rs17810398:T and rs17810816:G and eight probands homozygous for AMD non-risk alleles rs17810398:C and rs17810816:A (Supplementary Figure S3; Supplementary Table S4).