POU2F1 and infectious otitis media: We used a custom 60-gene panel enriched in gut-associated stem cell function [50] together with 31 AOM-DSS-induced tumor samples (23 FFPE and 8 frozen), and 25 Apcfl;Lrig1-CreERT2 tumor samples (12 FFPE and 13 frozen), all of which were wild-type for Oct1.