Star symbol in depmap

When searching genes in depmap some cell lines are represented as stars rather than circles. What does the star signify?

Are you referring to the way cell lines are represented on the Perturbation Effects tab?

/can you share a screenshot as an example of where you are seeing this?

If you are working in Data Explorer, then you may have a set of cell lines selected.

You can choose a cell line cohort by creating it in Cell line selector. When you do that, the lines in that cohort will be indicated with stars in Data Explorer as opposed to dots.