TRPV1 and head and neck squamous cell carcinoma: We have demonstrated the presence of TRPV1-expressing nociceptor neurons in head and neck squamous cell carcinomas (HNSCC; Madeo et al., 2018), melanoma (Balood et al., 2022), cervical (Lucido et al., 2019), and ovarian cancers (Barr et al., 2021).