@article {Lombardo034454, author = {Michael V. Lombardo and Meng-Chuan Lai and Bonnie Auyeung and Rosemary J. Holt and Carrie Allison and Paula Smith and Bhismadev Chakrabarti and Amber N. V. Ruigrok and John Suckling and Edward T. Bullmore and MRC AIMS Consortium and Christine Ecker and Michael C. Craig and Declan G. M. Murphy and Francesca Happ{\'e} and Simon Baron-Cohen}, title = {Unsupervised data-driven stratification of mentalizing heterogeneity in autism}, elocation-id = {034454}, year = {2016}, doi = {10.1101/034454}, publisher = {Cold Spring Harbor Laboratory}, abstract = {Individuals affected by autism spectrum conditions (ASC) are considerably heterogeneous. Novel approaches are needed to parse this heterogeneity to enhance precision in clinical and translational research. Applying a clustering approach taken from genomics and systems biology on two large independent cognitive datasets of adults with and without ASC (n=715; n=251), we find replicable evidence for 5 discrete ASC subgroups that are highly differentiated in item-level performance on an explicit mentalizing task tapping ability to read complex emotion and mental states from the eye region of the face (Reading the Mind in the Eyes Test; RMET). Three subgroups comprising 42-65\% of ASC adults show evidence for large impairments (Cohen{\textquoteright}s d = -1.03 to -11.21), while other subgroups are effectively unimpaired. These findings delineate robust natural subdivisions within the ASC population that may allow for more individualized inferences and accelerate research towards precision medicine goals.}, URL = {https://www.biorxiv.org/content/early/2016/04/29/034454}, eprint = {https://www.biorxiv.org/content/early/2016/04/29/034454.full.pdf}, journal = {bioRxiv} }