Guillain-Barré syndrome after vaccination against COVID-19 has been reported worldwide. Albeit rare, Guillain-Barré syndrome after vaccination is of great public concern given that it could potentially result in life-threatening paralysis. We report the findings of two patients with Guillain-Barré syndrome after receiving the BNT162b2 vaccine (tozinameran, Pfizer–BioNTech) who were in complete remission from diffuse large B-cell lymphoma. https://www.thelancet.com/article/S1474-4422(21)00416-6/fulltext