Research articles

Helen Hobbs, Jonathan Cohen and colleagues identify a nonsynonymous variant in TM6SF2 associated with susceptibility to nonalcoholic fatty acid liver disease. They further show that knockdown of Tm6sf2 in mice results in increased liver triglyceride content and reduced very-low-density lipoprotein (VLDL) secretion, suggesting that impaired TM6SF2 function contributes causally to disease risk.

Christian Steidl and colleagues identify recurrent somatic mutations in the PTPN1 gene in primary mediastinal B cell lymphoma and Hodgkin lymphoma. They show that mutant PTPN1 leads to reduced phosphatase activity and increased phosphorylation of JAK-STAT pathway members.

Frank Kooy, Nathalie Van der Aa and colleagues report that de novo mutations in ADNP cause a syndrome characterized by autism, intellectual disability and facial dysmorphisms. ADNP encodes a transcription factor that interacts with components of the SWI/SNF chromatin remodeling complex.

Jonathan Pritchard, Guy Sella and colleagues report an analysis using population genetic models to show that recent human demography is likely to have had little impact on the average burden of deleterious mutations. They examine two large exome sequence datasets and find that individuals of west African and European ancestry carry similar burdens of damaging mutations.

Kálmán Tory, Corinne Antignac and colleagues report that a variant of NPHS2, encoding p.Arg229Gln, causes nephrotic syndrome only when present in trans with particular mutations in the 3′ coding region of NPHS2. Mechanistically, the authors show that these 3′ mutations behave as recessive alleles when present with wild-type NPHS2 but exert a dominant-negative effect on the p.Arg229Gln variant, resulting in protein mislocalization.

Stephen Bentley, Paul Turner and colleagues report whole-genome sequencing of 3,085 pneumococci collected from a densely sampled pneumococcal carriage cohort in a Thai refugee camp over a 3-year period. They provide a high-resolution analysis of natural pneumococcal evolution and bacterial recombination, identifying lineage-specific variation in recombination.

Andrew Morris, Mark McCarthy, Michael Boehnke and colleagues report a meta-analysis of genome-wide association studies for type 2 diabetes, including 26,488 cases and 83,964 controls from populations of European, east Asian, south Asian and Mexican and Mexican American ancestry. They identify seven loci newly associated with type 2 diabetes and examine the genetic architecture of disease across populations.

Tao Cheng, Qian-fei Wang, Gang Huang and colleagues identify recurrent somatic loss-of-function mutations in SETD2 in individuals with acute leukemia. SETD2 encodes a histone H3K36 methyltransferase, and loss of SETD2 function causes global loss of H3K36 trimethylation and promotes leukemia stem cell self renewal.

Charles Swanton and colleagues used multiregion exome sequencing to study the evolutionary histories of ten clear cell renal cell carcinomas. They observed marked intratumoral heterogeneity in all cases, with extensive evidence of parallel evolution of tumor subclones and only a small number of truncal driver events.

Tannishtha Reya and colleagues show that Lis1, a key mediator of asymmetric cell division, is required for blood formation and hematopoietic stem cell function. The authors also show that the directed control of asymmetric division is a critical regulator of malignant hematopoietic development.

Songlin Chen and colleagues sequenced the whole genomes of a male (ZZ) and a female (ZW) Chinese half-smooth tongue sole, Cynoglossus semilaevis. Their analysis provides insights into the structure and evolution of the sex chromosomes and adaptation to the benthic lifestyle of this flatfish.

Jay Shendure, Greg Cooper and colleagues report a framework for annotation of genetic variation, Combined Annotation–Dependent Depletion (CADD), integrating diverse annotations into a single C score. They show that C scores correlate with annotations of functionality, pathogenicity and experimentally measured regulatory effects.

Francis Drobniewski and colleagues report the whole-genome sequencing of 1,000 Mycobacterium tuberculosis strains obtained prospectively from patients over a 2-year period in Samara, Russia, a region with a high incidence of multidrug-resistant (MDR) tuberculosis. They compare these strains to a diverse panel of strains isolated from across the UK and characterize the patterns of the emergence and evolution of drug resistance.

Unnur Thorsteinsdottir, Kari Stefansson and colleagues identify low-frequency and rare sequence variants associated with elevated or reduced risk of type 2 diabetes. The newly discovered variants include an intronic variant associated with altered expression of CCND2, two independent missense variants in PAM and a rare frameshift variant in PDX1.

Makedonka Mitreva and colleagues report the genome sequence and transcriptome analysis of the hookworm Necator americanus, a prevalent soil-transmitted human parasite and the cause of necatoriasis. They develop a hookworm protein microarray to examine the host parasite interaction and immune response, tested on blood samples from 200 individuals in an endemic region.

Doil Choi and colleagues report the genome sequence of the hot pepper, Capsicum annuum, as well as the resequencing of two cultivated peppers and a wild species, Capsicum chinense. Comparative genomic analysis across Solanaceae provides insights into genome expansion, pungency, ripening and disease resistance in hot peppers.

Douglas Higgs and colleagues report a high-throughput approach, called Capture-C, to analyze interactions between cis regulatory elements. Using Capture-C, the authors interrogated hundreds of specific interactions at high resolution in a single experiment.

Adolfo Ferrando and colleagues report the exome sequencing of peripheral T cell lymphomas. They identified recurrent mutations in RHOA, TET2, DNMT3A, IDH2, FYN, ATM, B2M and CD58.

Jorge Ferrer and colleagues have mapped regulatory SNP variants associated in GWAS with type 2 diabetes risk and glycemic traits to large clusters of enhancer elements regulating the transcriptional identity of pancreatic β cells via a highly connected transcription factor network.

Sandro Santagata, Gad Getz and colleagues report the discovery of a recurrent mutation in the oncogene BRAF in papillary craniopharyngiomas that does not occur in the histologically related adamantinomatous form. Their results have the potential to aid in diagnosis and treatment of these intracranial tumors.