Cluster 137: oropharynx hpv squamous carcinoma cell associated positive proven biopsy nc Cluster 545: carcinoma cell squamous adenocarcinoma histologically cancer confirmed adenosquamous nasopharyngeal patients Cluster 678: cavity oropharynx larynx hypopharynx oral squamous carcinoma cell neck histologically Cluster 1101: histology cell small carcinoma mixed squamous adenocarcinoma clear cytology variant Cluster 1161: junction gastroesophageal adenocarcinoma gastric gej esophagus histologically confirmed stomach metastatic Cluster 1608: neck head squamous carcinoma cell histologically confirmed cancer hnscc scchn