Adult subjects with CD will be recruited through our clinic. All patients enrolled will have established CD diagnosed > 6 months. All patients will have history of abnormal MARSH score on initial duodenal biopsy at diagnosis and MARSH 0 on repeat biopsy following a gluten free diet (GFD). All patients will also have positive celiac serologies (anti-TTG, anti-gliadin, etc.) at diagnosis, as well as, positive HLA DQ2/DQ8 genetic profile. At enrollment, all patients will have negative celiac serologies, indicative of serologic remission on a gluten free diet. Female subjects of childbearing potential (does not include those with history of tubal ligation/surgical sterilization, hysterectomy and/or oophorectomy) who are sexually active with a non-sterilized male partners agree to routinely use adequate contraception from signing informed consent, during study process and for an additional 18 weeks after the last dose of vedolizumab. A male subject who is non-sterilized and sexually active with a female partner of childbearing potential agrees to use adequate contraception from signing informed consent throughout the duration of the study and for 18 weeks after the last dose.