Guardant Health, Inc. (NasdaqGS:GH) is exploring an acquisition of NeoGenomics, Inc. (NasdaqCM:NEO), according to people familiar with the matter. The U.S.-listed companies have held discussions about a possible deal, the people said, asking not to be identified as the details aren't public. Deliberations are ongoing and there's no certainty they'll lead to an offer from Guardant, the people said.

Representatives for Guardant and NeoGenomics couldn't immediately be reached for comment.