Exhibit 21.1
List of Subsidiaries
| Subsidiary |
Jurisdiction of incorporation or organization | |
| AVROBIO Inc. | Ontario, Canada | |
| AVROBIO Australia Pty Ltd | Australia | |
| AVROBIO Securities Corporation | Massachusetts | |
| Tectonic Therapeutic Pty Ltd. | Australia | |
| Tectonic Therapeutic Securities Corp. | Massachusetts | |
| Tectonic Operating Company, Inc. | Delaware | |