Supplemental Data
Document S1. Figures S1–S4 and Tables S1, S3, and S4
Table S2. Detailed Stepwise Association Results of the HLA Variants for Psoriasis Risk
Document S2. Article plus Supplemental Data

Web Resources
The URLs for data presented herein are as follows:IMGT/HLA Database, http://www.ebi.ac.uk/ipd/imgt/hla/
Online Mendelian Inheritance in Man (OMIM), http://omim.org/
RefSeq, http://www.ncbi.nlm.nih.gov/refseq/
SNP2HLA, http://www.broadinstitute.org/mpg/snp2hla/
Type 1 Diabetes Genetics Consortium (T1DGC), https://www.t1dgc.org/home.cfm
UCSC Genome Browser, http://genome.ucsc.edu

Acknowledgments
This work was supported by the NIH (1R01AR062886, R01AR042742, R01AR050511, R01AR062382, 5U01GM092691-04, 1R01AR063759-01A1, and 2R01AR050266), the Arthritis Foundation, a Clinical Scientist Development Award to S.R. from the Doris Duke Foundation, the Japan Society of the Promotion of Science, the Japan Science and Technology Agency, the Ann Arbor Veterans Affairs Hospital, the Canadian Institute of Health Research, the Krembil Foundation, the Arthritis Society, a Vernieuwingsimpuls VIDI Award (project 016.126.354) from the Netherlands Organization for Scientific Research, and the Babcock Memorial Trust. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/3.0/).