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Transposable elements (TEs) make up 50% of the human genome and are usually considered a mutational burden. A new study uses signatures of DNA hypomethylation to identify tissue-specific enhancers within TEs, providing fresh evidence that mobile DNA has a non-negligible role in genome regulation and evolution.
Two new studies show that the known histone H3 alteration p.Lys27Met in pediatric glioma leads to globally diminished trimethylation at histone H3 lysine 27. The mutant histone H3 acts as a selective inhibitor of the PRC2 chromatin-modifying complex by binding and presumably sequestering it, shedding light on how this variant may contribute to the etiology of these highly malignant brain tumors.
A recent study in the New England Journal of Medicine reports the genomic and epigenomic changes in adult acute myeloid leukemia (AML). The patterns of somatic mutation suggest biologically relevant connections between the functional categories of genes driving AML.
Plasmodium falciparum in Southeast Asia are gradually becoming resistant to artemesinin, a standard first-line treatment for malaria. Whole-genome sequencing offers a chance to better understand and perhaps undermine the parasite's evolutionary response to this drug.
Analyses of a new male sterility gene from a well-known rice cytoplasmic sterile line reveal inhibition of a nucleus-encoded protein and counteractions by nuclear fertility restorer factors. The existence of these genes in wild rice populations suggests that they may confer selective advantages.
A new study reports that recessive loss-of-function mutations in the gene encoding diacylglycerol kinase ε result in atypical hemolytic-uremic syndrome. Notably, mutations in DGKE are not associated with activation of the complement pathway, the only other identified cause of this disorder so far, and have important implications for patient management.
Alterations in the single-stranded telomere–binding protein POT1 have recently been identified in chronic lymphocytic leukemia. This discovery provides novel insights into how genomic instability induced by dysfunctional telomeres contributes to tumorigenesis.
Two new loci for premature fusion of the cranial sutures in humans suggest a common endpoint in osteoblast regulation, linking upregulation of phosphorylated ERK1/2 and TWIST1 haploinsufficiency.
A new study in mice shows that, during meiosis, the decision to mature a double-strand break into a crossover is controlled by a dosage-sensitive regulator, RNF212. This finding provides insight into the crossover maturation process and may help explain how sequence polymorphisms in RNF212 alter the frequency of crossing over in humans.
A recent study shows that the life history of chronic lymphocytic leukemia is characterized by a complex and dynamic architecture involving the development of subclones with changing dominance over time. This innovative study provides a framework to design anticipation-based chemotherapy approaches for cancer treatment.
Attempts to elucidate the mechanism underpinning the genetic association between IFNL3, previously called IL28B, and clearance of hepatitis C virus have, by and large, been unsuccessful. A study in this issue suggests that a new gene, IFNL4, may be responsible.
Our understanding of inherited risk factors for colorectal cancer (CRC) is incomplete. A new study reports the identification of germline CRC risk variants that adversely affect the proofreading function of DNA polymerases encoded by POLE and POLD1.
