ERBB2 and salivary gland carcinoma: Genomic profiling of ctDNA in a set of patients with various histological types of salivary gland carcinomas determined the most commonly altered genes to be TP53, PIK3CA, ERBB2, ATM, EGFR, and HRAS, while BRAF and KRAS mutations and EGFR amplification were identified as potentially targetable alterations that were newly detected on serial testing [34].