Gardner Syndrome Watchlist (log in to enable) Retrieved 2021-01-23 Source Orphanet Trials — Genes APC, CTNNB1, FAP, PRKAA1, PDXP, MAPRE1, KIF3A, XPA, SMARCB1, SLC12A3, RBP4, PTCH1, PSG2, PRKAB1, PRKAA2, SERPINE1, PKHD1, CD44, MLH1, CD46, LEP, GCK, G6PD, ERG, DPEP1, CEACAM7, CEACAM3, CEACAM5, LOC108004545 Drugs Celecoxib ( CELEBREX, ONSENAL ), Eflornithine, Eflornithine hydrochloride ( ORNIDYL ) Celecoxib ( CELEBREX, ONSENAL ), Eflornithine, Eflornithine hydrochloride ( ORNIDYL ), Eflornithine in combination with sulindac, Eicosapentaenoic acid, Valproic acid, sodium ⋯ Interested in hearing about new therapies? Registered! Gardner syndrome is a severe form of familial adenomatous polyposis characterized by multiple adenomas in the colon and rectum associated with prominent extracolonic features including osteomas and multiple skin and soft tissue tumors.