A Randomized, Double-Blind, Placebo-Controlled Dose-Escalation Study to Determine the Safety and Efficacy of Intravenous Infusion of Human Placenta-Derived Cells (PDA001) for the Treatment of Crohn's Disease

Inclusion Criteria: * • Males and females 18 - 75 years of age at the time of signing the informed consent document. * Minimum weight of subject is 40 kg at screening. * Subject must have inflammatory Crohn's Disease (CD) diagnosed at least 6 months but no greater than 15 years prior to treatment with Investigational Product (IP). * Subject must have confirmation of ongoing CD by ileocolonoscopy at screening. * Subject must have a Crohn's Disease Activity Index (CDAI) score ≥ 220 and ≤ 450 as assessed between Visit 1 and Visit 2. Exclusion Criteria: * Subject has any significant medical condition, laboratory abnormality, or psychiatric illness that would prevent the subject from participating in the study including but not limited to * Liver Function Tests Aspartate aminotransferase (AST) or Alanine aminotransferase (ALT) \> 2.5 x the upper limit of normal at screening. * Serum creatinine concentration \> 2.0 mg/dl at screening. Alkaline phosphatase \> 2.5 x the upper limit of normal at screening. * Bilirubin level \> 2 mg/dL (unless subject has known Gilbert's disease). * Pregnant or lactating females. * Morbidly obese subjects Body Mass Index (BMI) \> 35 at screening). * Subject has untreated chronic infection including Clostridium difficile toxin positive at screening or treatment of any infection with antibiotics within 4 weeks prior to dosing with IP (other than a treated urinary tract infection or drained perianal abscess). Note: Stable doses of antibiotics used to treat Crohn's Disease are allowed. * Subject has organic heart disease (eg, congestive heart failure), clinically significant arrhythmia or clinically significant abnormal findings on Electrocardiograms (ECG). * Subject has a history of other malignancies within 5 years (except basal cell carcinoma of the skin that is surgically cured, remote history of cancer now considered cured or positive Pap smear with subsequent negative follow up). * Subject has had a stricture of the bowel requiring hospitalization within 182 days prior to treatment with IP. * Subject has had bowel surgery other than perianal (for example, fistulotomy, seton placement, or abscess drainage) or previous abscess drainage within 182 days prior to treatment with IP. * Subject has had any surgery within 28 days prior to treatment with IP. * Subject has a colostomy, ileostomy or ileal pouch anal anastomosis. * Subject has received an investigational agent -an agent or device not approved by FDA for marketed use in any indication-within 90 days (or 5 half-lives, whichever is longer) prior to treatment with investigational product. * Subject has received previous cell therapy. * Subject is expecting to have elective surgery at any time between Visit 1 (screening) and Visit 7 (end of induction phase). * Subject has concurrent diagnosis of ulcerative colitis. * Subjects with protein C or S deficiency. * Subjects with prior history of thrombophlebitis or other pathological arterial or venous thrombosis.