Ten lawyers will spearhead lawsuits brought against consulting firm McKinsey & Co. over the opioid crisis.

In an order this week, U.S. District Judge Charles Breyer appointed Elizabeth Cabraser, of San Francisco’s Lieff Cabraser Heimann & Bernstein, as lead counsel in the multidistrict litigation, which consists of 50 lawsuits against McKinsey, a consulting firm to bankrupt pharmaceutical manufacturer Purdue Pharma.