Exhibit 99.1 Inozyme Pharma Reports Full Year 2023 Financial Results and Provides Business Highlights – Topline data from ongoing Phase 1/2 trials of INZ-701 in adults with ABCC6 Deficiency and ENPP1 Deficiency expected in early April – – Phase 1 trial of INZ-701 in end-stage kidney disease (ESKD) patients receiving hemodialysis (SEAPORT-1) now underway (NCT06283589), with topline data expected in Q4 2024 – – Launched global patient registry (PROPEL) in partnership with GACI Global to advance understanding ...