SMARCA1 and head and neck squamous cell carcinoma: ΔNp63α may interact with actin-like protein 6A (ACTL6A), which is a subunit of SWI/SNF CRC and co-amplified with ΔNp63α in head and neck squamous cell carcinoma (HNSCC); this collaboration leads to a downregulation of tumour suppressors such as WWC1 and GPRC5A [107].