Inclusion criteria:
* Pathologically (histologically or cytologically) proven diagnosis of HNSCC of the oral cavity, oropharynx (p16 negative), hypopharynx, or supraglottic larynx
* Stage III, IVA or IVB according to the 8th Edition of the American Joint Committee on Cancer (AJCC) guidelines
* A candidate for definitive concurrent chemoradiation therapy treatment as determined by investigator and per local guidelines
* Participants must have at least 1 target lesion (primary tumor or involved lymph node) per RECIST v.1.1
* Eastern Cooperative Oncology Group Performance Status (ECOG PS) 0 or 1
Exclusion criteria:
* Primary tumor originating in the nasopharynx, paranasal sinuses, salivary glands, thyroid gland, parathyroid gland, skin, or unknown primary site
* Non-squamous histology
* Stages 0, I, II, and IVC HNSCC, loco-regionally recurrent HNSCC, or synchronous second primary HNSCC (within 2 months)
* Ineligible to receive cisplatin chemotherapy
* Suspected or known allergies, hypersensitivity, or intolerance to JNJ-90301900 or its excipients