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Michiaki Kubo and colleagues report results of a genome-wide association study of ulcerative colitis in the Japanese population. Their study identifies three new susceptibility loci for this common inflammatory bowel disease, including FCGR2A, which has previously been implicated in other autoimmune diseases.
The UK IBD Genetics Consortium and the Wellcome Trust Case Control Consortium 2 report results of a genome-wide association study of ulcerative colitis. They identify three new loci associated with the disease, including the HNF4A region on 20q13.
Tatsushi Toda and colleagues report results of a genome-wide association study of Parkinson's disease in the Japanese population. They identify four loci harboring common variants associated with Parkinson's disease, including two newly discovered risk regions on 1q32 and 4p15.
Andrew Singleton, Thomas Gasser and colleagues report results of a genome-wide association study of Parkinson's disease among individuals of European ancestry. They find genome-wide significant associations at two loci, SNCA and MAPT, and provide supporting evidence for a new risk locus on 1q32.
Michael Bamshad, Jay Shendure and colleagues report the first application of exome resequencing to identify the cause of a mendelian disorder. They sequenced the exomes of four individuals with Miller syndrome in three independent families and identify mutations in DHODH, a key enzyme in the pyrimidine de novo biosynthesis pathway, as causal for the disorder.
Arthur Beaudet and colleagues report a recurrent 680-kb deletion within chromosome 15q13.3 associated with a range of neurodevelopmental phenotypes, including developmental delay, mental retardation and seizures. The deletion lies within the previously reported 1.5-Mb 15q13.3 deletion and spans only two genes, CHRNA7 and OTUD7A.
Frank Costantini and colleagues report the identification of the ETS transcription factors, Etv4 and Etv5, as key targets of Ret signaling during kidney branching morphogenesis. Loss of Etv4 and Etv5 function in mice leads to complete failure of kidney development.
Karin Lundberg and colleagues explore gene-gene and gene-environment interactions in susceptibility to rheumatoid arthritis, reporting an association of HLA-DRB1, PTPN22 and smoking stratified by the autoantigen CEP-1.
Soumya Raychaudhuri and colleagues demonstrate the utility of GRAIL, a software program used to prioritize results from genome-wide association studies for further replication, applied here to rheumatoid arthritis. The authors seek replication of their predictions in additional independent cohorts and report three new genetic loci associated with RA susceptibility.
Andrew Feinberg and colleagues show that differential methylation of CpG island shores distinguish human induced pluripotent stem cells from the fibroblasts from which they were derived. These differentially methylated regions of the genome can also distinguish normal colon tissue from colorectal cancer.
Jun Wang and colleagues report the genome sequence of the cucumber. The cucumber genome is the seventh plant genome sequence to be reported and was assembled with a combination of traditional Sanger and next-generation sequencing methods.
Stewart Cole and colleagues report the genome sequence and comparative analyses of Brazilian, Indian, North American and Thai strains of Mycobacterium leprae, the etiologial agent of leprosy. They define 16 sub-types of M. leprae and examine their geographical distribution.
Andrew Wilkie and colleagues report that activating paternal-effect mutations in FGFR3 and HRAS promote clonal expansion in the testis, leading to spermatocytic seminomas. The same mutation in FGFR3 leads to the lethal disorder thanatophoric dysplasia, revealing a shared genetic mechanism for congenital disorders and testicular tumors.
Jonathan Sebat and colleagues report the association of microduplication on chromosome 16p11.2 with schizophrenia, while the reciprocal microdeletion was associated with autism and developmental disorders.
Ingo Kurth and Christian Hübner report the identification of loss-of-function mutations in FAM134B, which encodes a novel cis-Golgi protein, in hereditary sensory and autonomic neuropathy type II.
Robert Graham and colleagues report results of a large-scale replication study for systemic lupus erythematosus (SLE) in individuals of European ancestry. Their findings expand the number of confirmed SLE susceptibility loci and implicate several key immunologic pathways in SLE pathogenesis.
Xuejun Zhang and colleagues report results of a genome-wide association study of systemic lupus erythematosus (SLE) in a Chinese Han population. Their work identifies nine new SLE susceptibility loci and reveals overlap in the spectrum of risk alleles shared between Chinese Han and European populations.
Charles Mullighan and colleagues report a recurrent rearrangement of CRLF2 in B-progenitor and Down syndrome-associated acute lymphoblastic leukemia. Their genetic and functional evidence indicates that CRLF2 cooperates with activated JAK2 to promote leukemogenesis.