20 months after being diagnosed, 14 months into maintenance therapy, and 4 months from the end of treatment (EOT), a small number of cancerous blasts were found in the spinal fluid sample of Beaudin’s quarterly lumbar puncture.
Because the number of blasts was below the relapse threshold, chemo was administered and a follow-up LP was done one month later. With blasts present in the sample, Beaudin was diagnosed as a CNS only, late-relapse.

Post announcing his relapse:
Relapse. Another shitty thing about 2020.
Beaudin has relapsed, but no one has come outright and said so. Read more about what relapse means for us.