31/05/2026 Johnson & Johnson submits US sBLA for subcutaneous amivantamab in HPV-unrelated R/M HNSCC, previously treated with immunotherapy and chemotherapy Johnson & Johnson submits US sBLA for subcutaneous amivantamab in HPV-unrelated R/M HNSCC, previously treated with immunotherapy and chemotherapy (Ref) Johnson & Johnson confirmed that a supplemental Biologics License Application (sBLA) has been submitted to the US FDA seeking approval of subcutaneous amivantamab (EGFR x