Clinical Trials

The purpose of this study is to compare rectal emptying and rectoanal pressures in healthy people and DD. Our hypotheses are that (i) the rate and amount of rectal emptying is higher in healthy people than in patients with DD, (ii) some patients with symptoms of DD will have a normal balloon expulsion test but reduced rectal emptying measured with fecomanoflowmetry, and (iii) compared to healthy people, the rectal pressure increment and/or anal relaxation is reduced in patients with DD.
 

The purpose of this study is to evaluate safety and tolerability as well as the effects of RM-131 on colonic motor and sensory effects in patients with chronic constipation.

The objective of this study is to compare the central neural circuitry with fMRI (7T) in 30 asymptomatic healthy controls, 30 constipated patients without DD, and 30 constipated patients with DD at rest (functional connectivity analysis), during rectal distention to desire to defecate and urgency, and during evacuation. 

This will be a single-center, randomized, parallel group, multiple dose administration, double-blind, placebo-controlled study to evaluate the effects of YKP10811 on gastric, small bowel, and colonic transit in patients with Chronic Constipation or Functional Constipation. Four groups including a placebo group will be enrolled and will receive multiple oral doses of YKP10811 or matching placebo.

  The purpose of this study is to assess the long term outcomes and patient satisfaction for patients who had a partial removal of the large intestine for chronic constipation that was caused by the slow transport of waste.

The purpose of this study is to evaluate safety and tolerability as well as the effects of RM-131 on colonic transit, bowel consistency, bowel habits, abdominal pain, and other abdominal symptoms in patients with chronic constipation.

This is a study intended to evaluate the effectiveness and safety of the vibrating capsule device versus a sham non-vibrating capsule on spontaneous bowel movement, to aid the relief of constipated individuals.

Constipation is a very common problem. Western style toilets that are nearly universal in the United States require the person to sit on the toilet. However, results from uncontrolled studies suggests that a squatting posture (as prevalent in many foreign countries) may be better at facilitating evacuation compared to a Western style commode. One uncontrolled, unpublished study suggests that a footstool improved bowel symptoms in nearly 98% of 153 constipated participants. The purpose of this study is to evaluate the benefits of a footstool on symptoms and anorectal function in constipated patients.

Many people have constipation because they cannot defecate. However, we do not fully understand the mechanisms of normal defecation or constipation. We are trying to better understand why constipation occurs and improve the tests for diagnosing these conditions.

The purpose of this study is to assess the effectiveness and safety of Lubiprostone in pediatric patients, aged ≥ 6 years to < 18 years, diagnosed with functional constipation.

A study of the efficacy and safety of Lubiprostone in pediatric subjects aged ≥ 6 Years to < 18 years diagnosed with Functional Constipation

The purpose of this study is to better understand the mechanisms by which people retain control of their bowel contents and evacuate stool (defecation) and why people have constipation or fecal incontinence (involuntary stool leakage). Pressure measurements (by manometry) and magnetic resonance imaging (MRI) are widely used for diagnosis in patients with constipation or fecal incontinence. This study is trying to improve the utility of these tests for diagnosing these problems and to understand if pressure measurements (by manometry) can be related to strength of the anal sphincter measured by MRI. To do this, we will study the effects of alfuzosin on these muscles.

Supporting the pelvic floor can reduce symptoms of constipation in patients with refractory constipation due to pelvic floor laxity and excessive perineal descent by means of a modified toilet seat, known as "the Bottom's Up".

The purpose of this study is to evaluate the effects of an investigational (not yet FDA approved) medication, ROSE-010, on the movement of food through the stomach, small intestine and colon in females who have a  constipation predominant form of irritable bowel syndrome.

The purpose of this study is to evaluate the effects of A3309 on gastric, intestinal and colon transit in patients who have functional constipation.

The purpose of this study is to determine the effect of NGM282 on colonic transit, bile acid homeostasis, and fecal fat in subjects with functional constipation and in healthy individuals.

The purpose of this study is to investigate the effects of subthalamic nucleus and globus pallidus interna deep brain stimulation on bowel symptoms and the ability to smell things in patients with Parkinson disease and constipation.

The purpose of this study is to develop a resource (bank) of biospecimens and data collected from individuals with functional gastrointestinal disorders (FGID) to facilitate discovery and development of novel microbial biomarkers of disease and response to treatment, and novel targeted therapeutic strategies for FGID.  

The purpose of this study is to assess the effectiveness in self-administered hypnotherapy protocol in decreasing the sensation of bloating, as assessed by validated patient reported outcomes, can be developed and validated using telehealth-based research, and digitally delivered.  

The purpose of this study is to:

1. To evaluate the pharmacogenomic profile (PGx) by genotyping 22 genes, including the CYP2D6 genotype, in patients with functional GI disorders.
2. To assess the impact of PGx testing on prescriber patterns in this practice.
3. To explore the impact of PGx testing on patient outcomes after an assessment in this practice.