 MENLO PARK, Calif.--BUSINESS WIRE--Personalis, Inc. Nasdaq: PSNL, a leader in advanced genomics for population sequencing and cancer, today reported unaudited preliminary revenue for the fourth quarter and full year ended December 31, 2020. Personalis estimates revenue of approximately 20.2 million for the fourth quarter of 2020 compared with 18.2 million in the fourth quarter of 2019, representing an increase of 11. For the full year 2020, revenue is estimated to be approximately 78.6 