Exhibit 99.1 - Joint Filer Information Designated Filer: Eli Lilly and Company Issuer & Ticker Symbol: Prevail Therapeutics Inc. (PRVL) Date of Event Requiring Statement: December 14, 2020 Joint Filers: 1. Name: Eli Lilly and Company Address: Lilly Corporate Center Indianapolis, Indiana 46285 2. Name: Tyto Acquisition Corporation Address: Lilly Corporate Center Indianapolis, Indiana 46285 Exhibit 99.2 - Joint Filers' Signatures Designated Filer: Eli Lilly and Company Issuer & Ticker Symbol: Prevail Therapeutics Inc. (PRVL) Date of Event Requiring Statement: December 14, 2020 ELI LILLY AND COMPANY By: /s/ Joshua L. Smiley ----------------------------------------------------------- Name: Joshua L. Smiley Title: Senior Vice President and Chief Financial Officer Date: December 16, 2020 TYTO ACQUISITION CORPORATION By: /s/ Kenneth L. Custer ------------------------------------------------------------ Name: Kenneth L. Custer Title: President Date: December 16, 2020