We welcome you, Peter, and are glad to hear that your treatment is shrinking the tumor - good news! It sounds as if they are very thorough in their research/treatment so that will help you. Is it a comprehensive cancer center? Yes, they are finding that
HPV is indeed one of the causes of oral cancer....although some get it for "none of the above", or as my husband's doctor said "just bad luck". Please keep us updated how your treatment is going and we welcome you to our family.