Evaluation of Clinical Equivalence Between Two Lubiprostone Products in the Treatment of Chronic Idiopathic Constipation



Status:Completed
Conditions:Constipation
Therapuetic Areas:Gastroenterology
Healthy:No
Age Range:18 - Any
Updated:3/1/2014
Start Date:September 2012
End Date:December 2013
Contact:PAREXEL Inc
Email:DRL_lubiprostonestudyinfo@parexel.com

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A,Randomized , Double-blind,Double -Dummy Placebo-controlled,Parallel -Group, Multicenter Study to Evaluate the Clinical Equivalence of Lubiprostone 24 Mcg Capsules ( Dr. Reddy's Laboratories Ltd.) With AMITIZA® (Lubiprostone ) 24 Mcg Capsules ( Sucampo Pharmaceuticals, Inc. ) in the Treatment of Chronic Idiopathic Constipation

The objective of this study is to evaluate the clinical equivalence and safety of the test
formulation of Lubiprostone 24 mcg capsules manufactured by Dr Reddy's Laboratories Ltd
compared to the marketed formulation AMITIZA® ( Lubiprostone) 24 mcg capsules (Sucampo
Pharmaceuticals, Inc.) in patients with confirmed Chronic Idiopathic Constipation

Constipation is a common gastrointestinal problem estimated to effect 2-27 % of the
population in United States . It is found more commonly in women and elderly . The
prevelance of constipation and growing demand for treatment dictate the need for safe and
effective treatment options . Lubiprostone is the first chloride channel activator approved
by FDA for long term treatment of chronic idiopathic constipation in adult men and women .
To provide a generic medicine to the U.S population Dr Reddy's Laboratories intends to
conduct this study to evaluate that the Lubiprostone manufactured by it is equally effective
and safe as marketed AMITIZA® ( Lubiprostone) 24 mcg capsules (Sucampo Pharmaceuticals,
Inc.)

Main Inclusion Criteria:

1. Patients who have signed the written informed consent form prior to entering the
study.

2. Male or non-pregnant female aged ≥ 18 years with a clinical diagnosis of CIC defined
as, on average, < 3 SBMs per week and confirmed by daily diary during the two week
baseline/washout period. An SBM is defined as any bowel movement (BM) that does not
occur within 24 hours after rescue medication use.

3. Patients with body mass index between 18 and 35kg/m2 (both inclusive)

4. Have one or more of the following symptoms related to BMs for at least 6 months
before the baseline visit and confirmed by daily diary during the 2 weeks
baseline/washout period:

i. very hard (little balls) and/or hard stools for at least 25% of the bowel
movements ii. sensation of incomplete evacuation following at least 25% of the bowel
movements iii. straining at defecation at least a quarter of the time

5. Women of child-bearing potential should have a negative serum pregnancy test prior to
beginning therapy and agree to use effective contraceptive methods (at least one
medically approved and highly effective method of birth control defined as those
which result in a low failure rate (i.e., less than 1% per year) when used
consistently and correctly such as implants, injectables, oral contraceptives
combined with at least one barrier method, hormonal IUDs, sexual abstinence or
vasectomy of the partner) during the study.

6. For patients aged < 50 years, documentation of the results of either a flexible
sigmoidoscopy or colonoscopy performed within the five years prior to dosing, showing
no mechanical bowel obstruction or organic disorders of the large or small bowel.

7. For patients aged ≥ 50 years, documentation of the results of either a barium enema
with flexible sigmoidoscopy or colonoscopy performed within one year prior to dosing,
showing no mechanical bowel obstruction or organic disorders of the large or small
bowel.

Main Exclusion Criteria:

1. Females who are pregnant, breast feeding, or planning a pregnancy during the proposed
study period.

2. Patients of any age with evidence of weight loss, anemia, or rectal bleeding and
without documentation of the results of either a flexible sigmoidoscopy or
colonoscopy performed during the 6 months prior to dosing.

3. Patients who have documented mechanical bowel obstruction (e.g., bowel obstruction
due to tumor, hernia), megacolon/megarectum, or diagnosis of pseudo-obstruction.

4. Patients with known or suspected organic disorders of the large or small bowel (e.g.,
inflammatory bowel disease, ulcerative colitis, Crohn's Disease) or constipation
secondary to a documented cause (e.g., surgery, bowel resection) or acute hernia or
with neurologic diseases or other diseases that cause motility problems for example
Parkinson's disease and spinal cord injury, etc.

5. Patients with a history of bowel resection.

6. Patients who are regularly using medications, which are known to cause constipation
(anticholinergics, narcotics, calcium channel blockers, tricyclic antidepressants,
colchicine, iron supplements, magnesium supplements).

7. Patients who are hospitalized for any gastrointestinal or abdominal surgical
procedure during the three months prior to dosing.

8. Patients with clinically significant cardiovascular, liver, lung, neurologic, renal
or psychiatric disorder, or clinically significant laboratory abnormalities (if
laboratory values exceed 2X Upper Limit of Normal the approval of medical monitor
should be taken into consideration before randomizing the patient).

9. Use of systemic antibiotics within four weeks prior to baseline.

10. Any current or planned significant change in diet during the study.

11. Participation in a study with any investigational medication within the past 30 days
before screening for this study or previous participation in this study.
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