<prompt> The presence of anti-Saccharomyces cerevisiae antibody is a surrogate marker of one of the following:Celiac diseaseCrohns diseaseUlcerative colitisTropical sprue  <response>: Answer is B Crohns disease Antibodies to the yeast Saccharomyces cerevisiae ASCA are found in 60 - 70 of patients with Crohns disease and 10 - 15 of patients with ulcerative colitis. Antibody Antiendomysial antibodyQ Antisaccharomyces cerevisiae antibodyQ Antineutrophilic cytoplasmic antibodyQ G.I. Disorder Celiac sprue Crohns disease Ulcerative colitis 