Organoid butterflies on NASH spider web (IMAGE) Tokyo Medical and Dental University Caption Non-alcoholic steatohepatitis (NASH) is a common disease that affect nearly billion people globally and so early identification of susceptible individuals is critical for precision hepatology. In this issue, Takebe et al. use human liver organoids and perform en masse population-based phenotypic analysis under insulin insensitive conditions to investigate key NASH-genetic factors. In the image, multiple flying butterflies with liver-like wings suggest liver organoids at “population” scale. Some butterflies are caught by the “NASH” spider web, which illustrates steatohepatitis-like phenotype. This is a metaphor that genetic association can be better captured in a certain metabolic state, enabling efficient evaluation of genetic markers for common disorders like NASH. Credit Institute of Research, TMDU Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.