BRAF and head and neck squamous cell carcinoma: Subsequent treatment following immunotherapy included: BRAF inhibitor for a melanoma patient (to which Guillain-Barré syndrome was erroneously attributed), and multimodality standard of care (surgery followed by risk-adapted radiation +/− chemotherapy) for the two HNSCC patients, both of which developed protracted neurologic DIRE, with adrenal crisis included in the DIRE complex in case No. 2 (Table 1; Additional file 1: Institutional Case Series).