Global private equity firm Warburg Pincus has fully exited its 27 percent stake in Metropolis Healthcare, an India-based pathology diagnostic laboratory company, for US$90 million to the Shah family, promoters of the company, who were supported in the buyback by global investment firm KKR. Details regarding KKR’s involvement in the transaction were not disclosed. Warburg Pincus initially purchased its stake for US$85 million in 2010.