
| Year | Event | |||
| 2370 |  ● [1]
         Barclay becomes the first sufferer of Barclay's Protomorphosis Syndrome. A treatment developed by Beverly Crusher creates the disease, which causes most of the Enterprise-D crew to mutate to animal forms. [1] 
 | 
| Canon source | Backstage source | Novel source | DITL speculation | 
| # | Series | Season | Source | Comment | 
| 1 | TNG | 7 | Genesis | 
| Series : | TNG Season 7 | 
| Episode : | Genesis | 
| © Graham & Ian Kennedy | Page views : 12,882 | Last updated : 31 Oct 2025 |