Effect of ATI-7505 on Gastrointestinal Transit in Healthy Volunteers

2014-08-27 03:14:57 | BioPortfolio


This is a pharmacodynamic study in healthy volunteers to determine the effects of a new 5-HT4 agonist on gastric, small bowel and colonic transit.


ATI-7505, is an engineered analog of the 5-HT4 agent, cisapride. The objectives of this study are to compare effects of ATI-7505 and placebo on gastric, small bowel and colonic transit in healthy human volunteers and evaluate the safety and tolerability of ATI-7505.

This trial is a double-blind, randomized, placebo-controlled study evaluating the gastrointestinal transit effects of ATI-7505 and placebo. Three different doses (3, 10, 30mg) of ATI-7505 and placebo will be administered in parallel to four independent groups of 12 subjects each. The maximum duration of drug exposure for any subject is 9 days.

All participants will undergo a standard 48 hour gastrointestinal transit measurement using scintigraphy with standardized meals during the first 12 hours. The response endpoints (colonic geometric center at 4 h, colonic geometric center at 24 h, colonic geometric center at 48 h, gastric residual at 2 & 4 h, colonic filling at 6 h and ascending colonic emptying t1/2) will be based on abdominal scintigraphic images following the technetium-99m egg meal and methacrylate-coated, delayed-release capsule containing 111In labeled activated charcoal.

Safety and tolerability will be evaluated by serial assessment of vital signs, physical examination, ECG, adverse events, concomitant medications and blood sample analysis.

Study Design

Allocation: Randomized, Control: Placebo Control, Endpoint Classification: Pharmacodynamics Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver, Investigator), Primary Purpose: Treatment




ATI-7505, Placebo, ATI-7505, ATI-7505


Mayo Clinic
United States




Mayo Clinic

Results (where available)

View Results


Published on BioPortfolio: 2014-08-27T03:14:57-0400

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