Efficacy and Safety of SYN-010 in IBS-C | NCT03763175

NCT03763175

Protocol Section

Identification Module

Results Section

Participant Flow Module

Annotation Section

No data available

No data is available for this block.

Document Section

Large Document Module

Derived Section

Miscellaneous Info Module

Status Module

Sponsor/Collaborators Module

Name	Class
Theriva Biologics, Inc.	INDUSTRY

Oversight Module

Description Module

Brief Summary

Irritable bowel syndrome (IBS) is a gastrointestinal (GI) syndrome characterized by chronic abdominal pain and altered bowel habits in the absence of any organic cause. The symptoms of IBS not only adversely affect a patient's health-related quality of life (QoL), but also place a significant financial burden on society due to reduced work productivity and increased use of healthcare-related resources. Patients with IBS frequently complain of abdominal bloating and increased gas production in the form of flatulence or belching. The prevalence in North America and Europe is approximately 10-15%. Irritable bowel syndrome affects all ages and genders however there is a 2:1 female predominance in North America. Irritable bowel syndrome is classified into 4 subtypes based on stool pattern: IBS with constipation (IBS-C), IBS with diarrhea, mixed IBS, and un-subtyped IBS. Irritable bowel syndrome with constipation is defined as the presence of hard or lumpy stools with ≥ 25 percent of bowel movements and loose or watery stools with < 25% of bowel movements.

SYN-010 is a modified release, oral formulation of lovastatin being developed for the treatment of IBS-C. The SYN-010 program is based predominantly on research by Dr. Mark Pimentel and collaborators hypothesizing that reduction in intestinal methane (methane) production can reverse constipation and improve global symptoms in IBS-C. Methane production in humans is due to methanogenic archaea in the intestine, predominantly Methanobrevibacter smithii (M. smithii). Methane, the key product of anaerobic respiration of methanogens, had been perceived to produce no ill effects in humans aside from gaseous distention. However, several research groups worldwide have shown that a significant percentage of patients with IBS-C excrete methane, and elevated methane production by methanogens correlates with constipation and related symptoms in both IBS-C and chronic idiopathic constipation. A direct causative role for methane in IBS-C was demonstrated in a recent case report, wherein a woman undergoing fecal microbiota transplantation (FMT) for C. difficile infection unknowingly received stool containing a high concentration of methanogens. The FMT recipient rapidly developed severe symptoms of IBS-C that were subsequently reversed by ablation of methane production.

Detailed Description

SYN-010 has previously been evaluated in consecutive Phase 2a clinical trials. Sixty-three (63) IBS-C patients with high breath methane (>10 ppm) at screening were enrolled in a multicenter, randomized, controlled, double-blinded clinical trial (RCT) in which they received SYN-010 21 mg, SYN-010 42 mg or Placebo once daily for 4 weeks. Fifty-four (54) subjects who completed the RCT continued into an open-label extension (EXT) in which all subjects received SYN-010 42 mg once daily for an additional 8 weeks.

The SYN-010 Phase 2a studies were intentionally designed as mechanistic proof-of-concept studies, wherein reductions in breath methane were employed as a rapid and cost-effective means by which to determine if SYN-010 could be effective in treating an underlying cause of symptoms in IBS-C. Breath methane was reduced relative to baseline in SYN-010 treatment groups, and lower breath methane levels correlated with an increased number of complete spontaneous bowel movements (CSBMs) at week 12, consistent with the proposed methane-inhibiting action of lovastatin lactone.

Since lovastatin has not previously been used to treat IBS-C patients, the SYN-010 Phase 2a studies were also focused on the safety of the SYN-010 dosage form. Daily doses of SYN-010 were well-tolerated by IBS-C patients over the 12-week treatment period (at least 8 weeks of SYN-010 42 mg). SYN-010 did not cause clinically meaningful or persistent changes in serum liver and muscle markers in IBS-C patients at daily doses of 21 mg and 42 mg. Modest decreases from baseline in lipid parameters observed after 7 days of SYN-010 21 mg or 42 mg had largely faded by 28 days and were not evident after 12 weeks of dosing. Very few adverse events were reported over 12 weeks of SYN-010 treatment and all were of mild or moderate intensity. No serious adverse events were reported and there were no incidences of drug-related diarrhea, which is an important potential benefit of SYN-010 as an IBS-C therapy.

Although the Phase 2a studies were not prospectively powered for formal statistical evaluation of clinical endpoints, compelling improvements in CSBMs, abdominal pain, and bloating were observed in SYN-010 treatment groups. These clinical findings have been presented in multiple public forums and a panel of clinical advisors affirmed that the Phase 2a data validate the need to evaluate optimal dosing of SYN-010 in a larger patient population over a longer dosing period.

Based on the potential clinical benefit observed in Phase 2a, this Phase 2b clinical study will evaluate in more detail the clinical effects of two dose strengths of SYN-010 administered over a longer treatment period (12 weeks per FDA guidelines) to a larger number of IBS-C patients. The study will seek more definitive evidence regarding potential symptom improvements and safety in IBS-C patients. The study also seeks to provide new information of relevance to both efficacy and safety by measuring changes to the microbiome in patient stool samples; serum level of cytokine markers of inflammation; and expanded breath gas measurements.

SYN-010 is a hydroxypropyl methylcellulose (HPMC) capsule filled with enteric-coated tablets from which lovastatin is released at different intestinal pH values. The tablets are designed to pass through the stomach unchanged then release a small amount of lovastatin into the duodenum and the majority of the lovastatin dose into the ileocecal junction and colon. The amount of lovastatin to be released into the small and large intestine is anticipated to be consistent with the relative levels of methane-producing archaea in each location of the intestine.

Methane production (methanogenesis) is a ubiquitous process in the human intestine, disposing of hydrogen and other by-products formed during bacterial fermentation. Methane production in humans is almost entirely due to the archeon M. smithii. Elevated intestinal methane production reduces intestinal motility and is a cause of constipation, pain and bloating in IBS-C.

Interest in lovastatin as a potential inhibitor of methanogenesis originated with recognition that the rate-limiting step in the synthesis of archaeal lipid membranes is catalyzed by HMG-CoA reductase (HMGR) which is the target enzyme for cholesterol-lowering statins. Subsequent in vitro studies (described above) and computational studies have since determined that HMGR is not the target for lovastatin anti-methanogenic activity; rather, lovastatin lactone appears to exert a direct effect on methanogenesis enzymes. The mechanism by which lovastatin lactone inhibits methane production by M. smithii has not been conclusively determined; however, detailed computational studies showed that lovastatin lactone may competitively inhibit F420-dependent methylenetetrahydromethanopterin dehydrogenase (mtd), an enzyme that is integral to the M. smithii methanogenesis pathway.

Methanogenic archaea reside predominantly in the human colon, with lower methanogen levels measured in the small intestine of some patients. Methane production at both sites contributes to reduced gastrointestinal motility and rat studies suggest that the ileocecal region may be of particular significance. SYN-010 utilizes a dual-pulse release profile to deliver a portion of the lovastatin dose to the small intestine and the majority of the dose to the ileocecal junction and colon where the most methane-producing organisms are found; the relative amounts of lovastatin released into the small and large intestine are consistent with the anticipated relative levels of methanogens in each location.

Lovastatin lactone exerts its methane-reducing effect in the intestinal lumen and systemic absorption of lovastatin is not required for its therapeutic effect in IBS-C.

Conditions Module

Design Module

Interventional Study Design

Biospecimen

No data available

No data is available for this block.

Arms/Interventions Module

Arm Groups

Label	Type	Description	Intervention Names
SYN-010 21 mg	Active Comparator	Enrolled subjects will be screened and randomized into the three study arms in a 1:1:1 ratio. 50 subjects with constipation-predominant irritable bowel syndrome (IBS-C) will be administered a 12-week course of lovastatin (21 mg PO QD). Study activities will be the same across all three arms.	Drug: SYN-010 21 mg
SYN-010 42 mg	Active Comparator	Enrolled subjects will be screened and randomized into the three study arms in a 1:1:1 ratio. 50 subjects with constipation-predominant irritable bowel syndrome (IBS-C) will be administered a 12-week course of lovastatin (42 mg PO QD). Study activities will be the same across all three arms.	Drug: SYN-010 42 mg
Placebo	Placebo Comparator	Enrolled subjects will be screened and randomized into the three study arms in a 1:1:1 ratio. 50 subjects with constipation-predominant irritable bowel syndrome (IBS-C) will be administered a 12-week course of placebo. Study activities will be the same across all three arms.	Drug: Placebo

Interventions

Name	Type	Description	Arm Group Labels	Other Names
SYN-010 21 mg	Drug	21 mg lovastatin will be administered to patients diagnosed with IBS-C to evaluate whether the medication and dose is effective in increasing frequency of completely spontaneous bowel movements. The secondary objectives of the study are to assess the role of lovastatin lactone in increasing overall stool frequency and reducing abdominal pain severity, bloating severity, and rescue medication use. Additional endpoints include improvement in reported adequate relief and the effect of the study drug in lowering exhaled methane levels.

Outcomes Module

Primary Outcomes

Measure	Description	Time Frame
Change From Baseline in the Weekly Average Number of Completely Spontaneous Bowel Movements (CSBM) Compared to the 12-week Treatment Period	Subjects will record their daily bowel movements throughout the duration of the study. Change in weekly average number of CSBMs will be evaluated by comparing reported values pre- and post-treatment.	After completing 12-week course of SYN-010

Secondary Outcomes

Measure	Description	Time Frame
Proportion of Overall Responders During the 12-week Treatment Period	An overall 12-week responder is defined as a patient with a weekly response in at least 50% of the weeks of treatment (6 of 12 weeks). A weekly response is defined as a decrease in the patient's weekly average score for worst abdominal pain in the past 24 hours of at least 30% compared to baseline and a stool frequency increase of 1 or more CSBMs per week compared with baseline.

Other Outcomes

Measure	Description	Time Frame
Proportion of Patients With Adequate Relief	Outcome will be assessed by evaluating proportion of patients reporting adequate relief pre- and post-treatment on validated questionnaire.	After completing 12-week course of SYN-010
Mean Change From Baseline in the Area-under-the-curve (AUC) of Breath Methane Production, Based on the 120-minute Lactulose Breath Test.

Eligibility Module

Eligibility Criteria

Inclusion Criteria:

Male or female participants aged between 18 and 65 years inclusive.
Patient must be willing and able to participate in the study for the required duration, understand and sign the informed consent (ICF), and be willing to comply with all protocol-related visits and procedures.
Patient has had IBS-C symptoms (as defined by Rome III diagnostic criteria) for at least 6 months prior to diagnosis.
Patient has an average score of ≥ 3.0 for daily abdominal pain at its worst (11-point numerical rating scale [NRS]) during and up to the 17 days immediately before randomization (i.e. Pre-treatment Period).
Patient has an average of ≤ 3 CSBMs per week or ≤ 5 SBMs per week during the 17 days immediately before randomization (i.e. Pre-treatment Period).
Patient has a breath methane level ≥ 10 ppm on a lactulose breath test administered at Screening.
Patient may be on a stable, continuous regimen of fiber or probiotics one month before the Screening Visit; however, they must maintain a stable dose regimen through Week 12.
Patient must agree to refrain from starting a new diet, changing stable dose of supplemental fiber, or changing exercise pattern that may affect IBS-C symptoms from the time of Screening through the end of the study. If the patient takes food products that are strong inhibitors of cytochrome P450 3A (CYP3A) (e.g. grapefruit juice, Seville orange juice, St. John's Wort), he/she must agree to refrain from taking these from the time of Screening through the end of the study.
Patient must agree to use an acceptable method of contraception from the time of signing the ICF to 30 days after the final dose of study drug if the patient is a sexually active female of child-bearing potential (defined as any female who has experienced menarche and who is NOT permanently sterile or postmenopausal. Postmenopausal is defined as 12 consecutive months with no menses without an alternative medical cause). Adequate contraceptive measures include: oral contraceptives (stable use for two or more cycles before Screening); intrauterine device; Depo-Provera®; Norplant® System implants; partner with a vasectomy; double-barrier birth control (e.g. use of a condom plus diaphragm or condom plus either contraceptive sponge, foam, or jelly); or abstinence. According to drug research standards, male patient must agree to use an acceptable method of contraception and refrain from donating sperm from the time of signing the ICF to 90 days after the final dose of study drug.
A female patient of child-bearing potential must be non-pregnant and non-lactating and have negative pregnancy tests at the Screening Visit and on Day 1 prior to dosing with study drug.
Patients must be able to understand and be willing to sign the written informed consent form. A signed informed consent form must be appropriately obtained prior to the conduct of any trial-specific procedure.
Willing and able to comply with the protocol, including follow-up visits and examinations.

Exclusion Criteria:

Patient has loose (mushy) or watery stools for > 25% of their bowel movements (BMs) during the 12 weeks before Screening or during the Screening and Pre-treatment Periods.
Patient has a history of cathartic colon, laxative, or enema abuse.
Patient has a history of ischemic colitis.
Patient has a history of pelvic floor dysfunction.
Patient has a history of bariatric surgery for the treatment of obesity.
Patient has a history of surgery to remove a segment of the gastrointestinal (GI) tract at any time before the Screening Visit.
Patient has any history of myopathy, rhabdomyolysis, chronic myalgia, or familial history of hereditary muscular disorders.
Patient has been diagnosed with or has a family history of familial adenomatous polyposis, hereditary nonpolyposis colorectal cancer, or any other form of familial colorectal cancer.
Patient currently has any structural abnormality of the GI tract or a disease or condition that can affect GI motility, or any unexplained and clinically significant symptoms such as lower GI bleeding, rectal bleeding, heme-positive stool, iron-deficiency anemia, weight loss, or systemic signs of infection.
Patient has had any previous surgery involving the abdomen, pelvis, or retroperitoneal region during the last 12 months prior to Screening, with the exclusion of laparoscopic gallbladder surgery or appendix removal.
Patient has a history of diverticulitis or any chronic condition that could be associated with abdominal pain or discomfort and could confound the assessments in the study (e.g. inflammatory bowel disease, chronic pancreatitis, polycystic kidney disease, ovarian cysts, endometriosis, or lactose intolerance).
Patient has history of severe renal insufficiency defined as an actual or estimated glomerular filtration rate of < 30 mL/min/1.73 m2 within the 6 months prior to Screening Visit.
Patient has any history of a medical condition or a concomitant medical condition that, in the opinion of the investigator, would compromise the patient's ability to complete the study safely or could confound the assessments in this study (e.g. uncontrolled hypothyroidism).
Patient is known to have elevated liver enzyme levels (aspartate aminotransferase [AST], alanine aminotransferase [ALT], alkaline phosphatase [ALP]) or creatine kinase levels that are ≥ 1.5 times the upper limit of normal (ULN) that have not been resolved within the 4 weeks prior to consent and/or these elevated levels are present at the Screening Visit laboratory assessment.
Patient has any abnormal laboratory results, electrocardiogram (ECG) findings, or physical examination findings deemed clinically significant by the investigator during the Screening Period.
Within 14 days prior to the Screening Visit, patient has used concomitant medications that are: (1) moderate-to-strong inhibitors of cytochrome P450 3A (CYP3A) and/or organ anion transporting polypeptide (OATP)1B1 (e.g. cyclosporine, verapamil, dronedarone, diltiazem, amiodarone, itraconazole, ketoconazole, posaconazole, voriconazole, clarithromycin, telithromycin, human immunodeficiency virus protease inhibitors, boceprevir, telaprevir, nefazodone, erythromycin, cobicistat-containing products); (2) other concomitant medications that are excluded from the lovastatin label (e.g. rifampin, colchicine, ranolazine); or (3) metformin or GLP-1 agonists. Patients should not take any of these concomitant medications during the treatment phase of the study without contacting the investigator.
Patient has hypersensitivity to statins; or has used any statins, fibrates, > 1 g/day of niacin, or gemfibrozil within the 3 months prior to the Screening Visit.
Patient reports current chronic or frequent use of drugs known to cause constipation (e.g. narcotics) for the 3 months prior to Screening.
Patient has taken over-the-counter IBS treatments (e.g. laxatives) or proton pump inhibitors within 3 days prior to the Screening Visit.
Certain drugs used for the treatment of IBS (e.g. low dose tricyclic antidepressants) may be allowed at the discretion of the Medical Monitor provided the patient remains on a stable dose for one month prior to the Screening Visit and throughout the study with the exception of tegaserod, lubiprostone, linaclotide, metoclopramide, prucalopride, domperidone, or antibiotics within 2 months prior to the Screening Visit. Certain drugs used for the treatment of IBS (e.g. low dose tricyclic antidepressants) may be allowed at the discretion of the Medical Monitor provided the patient remains on a stable dose for one month prior to the Screening Visit and throughout the study with the exception of tegaserod, lubiprostone, linaclotide, metoclopramide, prucalopride, domperidone, CandiBactin, Atrantil, Allimax/Allimed within 2 weeks prior to the Screening Visit or antibiotics within 2 months prior to the Screening Visit.
Patient has used an opioid chronically or frequently within the 3 months prior to the Screening Visit and for the duration of the study.
Patient is currently enrolled in, or plans to enroll in, another clinical study or has used any investigational drug or device within 1 month before signing the ICF through the completion of the study.
Patient has previously participated in a SYN-010 study.
Patient has a history of alcohol or drug abuse within the 12 months prior to the Screening Visit.

Contacts/Locations Module

Name	Affiliation	Role
Ali Rezaie, MD MSc	Cedars-Sinai Medical Center	Principal Investigator

Facility	Status	City	State	ZIP	Country	Contacts
Cedars-Sinai Medical Center		Los Angeles	California	90048	United States

References Module

Citations

PubMed Identifier	Type	Citation	Retractions
15926759	Background	Cash B, Sullivan S, Barghout V. Total costs of IBS: employer and managed care perspective. Am J Manag Care. 2005 Apr;11(1 Suppl):S7-16.
12454866	Background	Drossman DA, Camilleri M, Mayer EA, Whitehead WE. AGA technical review on irritable bowel syndrome. Gastroenterology. 2002 Dec;123(6):2108-31. doi: 10.1053/gast.2002.37095. No abstract available.

IPD Sharing Statement Module

No data available

No data is available for this block.

Arm/Group Information

ID	Title	Description
FG000	SYN-010 21 mg	Enrolled subjects will be screened and randomized into the three study arms in a 1:1:1 ratio. 50 subjects with constipation-predominant irritable bowel syndrome (IBS-C) will be administered a 12-week course of lovastatin (21 mg PO QD). Study activities will be the same across all three arms. SYN-010 21 mg: 21 mg lovastatin will be administered to patients diagnosed with IBS-C to evaluate whether the medication and dose is effective in increasing frequency of completely spontaneous bowel movements. The secondary objectives of the study are to assess the role of lovastatin lactone in increasing overall stool frequency and reducing abdominal pain severity, bloating severity, and rescue medication use. Additional endpoints include improvement in reported adequate relief and the effect of the study drug in lowering exhaled methane levels.
FG001	SYN-010 42 mg	Enrolled subjects will be screened and randomized into the three study arms in a 1:1:1 ratio. 50 subjects with constipation-predominant irritable bowel syndrome (IBS-C) will be administered a 12-week course of lovastatin (42 mg PO QD). Study activities will be the same across all three arms. SYN-010 42 mg: 42 mg lovastatin will be administered to patients diagnosed with IBS-C to evaluate whether the medication and dose is effective in increasing frequency of completely spontaneous bowel movements. The secondary objectives of the study are to assess the role of lovastatin lactone in increasing overall stool frequency and reducing abdominal pain severity, bloating severity, and rescue medication use. Additional endpoints include improvement in reported adequate relief and the effect of the study drug in lowering exhaled methane levels.
FG002	Placebo	Enrolled subjects will be screened and randomized into the three study arms in a 1:1:1 ratio. 50 subjects with constipation-predominant irritable bowel syndrome (IBS-C) will be administered a 12-week course of placebo. Study activities will be the same across all three arms. Placebo: A placebo will be administered to patients diagnosed with IBS-C to evaluate whether the medication and dose is effective in increasing frequency of completely spontaneous bowel movements. The secondary objectives of the study are to assess the role of lovastatin lactone in increasing overall stool frequency and reducing abdominal pain severity, bloating severity, and rescue medication use. Additional endpoints include improvement in reported adequate relief and the effect of the study drug in lowering exhaled methane levels.

Periods

Title

Milestones

Reasons Not Completed

Overall Study

Type	Comment	Milestone Data
STARTED		FG00020 subjects FG00119 subjects FG00220 subjects
COMPLETED		FG00019 subjects FG00117 subjects FG00219 subjects
NOT COMPLETED		FG0001 subjects FG0012 subjects FG0021 subjects

Baseline Characteristics Module

Arm/Group Information

ID	Title	Description
BG000	SYN-010 21 mg	Enrolled subjects will be screened and randomized into the three study arms in a 1:1:1 ratio. 50 subjects with constipation-predominant irritable bowel syndrome (IBS-C) will be administered a 12-week course of lovastatin (21 mg PO QD). Study activities will be the same across all three arms. SYN-010 21 mg: 21 mg lovastatin will be administered to patients diagnosed with IBS-C to evaluate whether the medication and dose is effective in increasing frequency of completely spontaneous bowel movements. The secondary objectives of the study are to assess the role of lovastatin lactone in increasing overall stool frequency and reducing abdominal pain severity, bloating severity, and rescue medication use. Additional endpoints include improvement in reported adequate relief and the effect of the study drug in lowering exhaled methane levels.

Units	Counts
Participants	BG000

Baseline Measures

Title	Description	Population Description	Parameter Type	Dispersion Type	Unit of Measure	Calculate Percentage	Denominator Units Selected	Denominators	Classes
Age, Categorical			Count of Participants

Outcome Measures Module

Outcome Measures

Type

Title

Description

Population Description

Reporting Status

Anticipated Posting Date

Parameter Type

Dispersion Type

Unit of Measure

Calculate Percentage

Time Frame

Units Analyzed

Denominator Units Selected

Arm/Group Information

Denominators

Classes

Analyses

Primary

Change From Baseline in the Weekly Average Number of Completely Spontaneous Bowel Movements (CSBM) Compared to the 12-week Treatment Period

Subjects will record their daily bowel movements throughout the duration of the study. Change in weekly average number of CSBMs will be evaluated by comparing reported values pre- and post-treatment.

Change from baseline in weekly average number of CSBMs at Weeks 1 through 12. Weekly average number of CSBMs = 7 x (sum of daily number of CSBMs)/ (number of days with CSBM assessment) for the specific week.

The analysis for the primary endpoint was performed using the analysis of covariance (ANCOVA) with treatment group and the baseline value as covariates based on the full analysis set. The primary analysis was conducted using the observed values.

Posted

Least Squares Mean

Standard Error

Weekly average CSBMs

After completing 12-week course of SYN-010

ID	Title	Description
OG000	SYN-010 21 mg

Adverse Events Module

Arm/Groups

ID	Title	Description	Deaths (Affected)	Deaths (At Risk)	Serious Events (Affected)	Serious Events (At Risk)	Other Events (Affected)	Other Events (At Risk)
EG000	SYN-010 21 mg	Enrolled subjects will be screened and randomized into the three study arms in a 1:1:1 ratio. 50 subjects with constipation-predominant irritable bowel syndrome (IBS-C) will be administered a 12-week course of lovastatin (21 mg PO QD). Study activities will be the same across all three arms. SYN-010 21 mg: 21 mg lovastatin will be administered to patients diagnosed with IBS-C to evaluate whether the medication and dose is effective in increasing frequency of completely spontaneous bowel movements. The secondary objectives of the study are to assess the role of lovastatin lactone in increasing overall stool frequency and reducing abdominal pain severity, bloating severity, and rescue medication use. Additional endpoints include improvement in reported adequate relief and the effect of the study drug in lowering exhaled methane levels.

Term	Organ System	Source Vocabulary	Assessment Type	Notes	Statistical Information
Hemiplegic Migraine	Nervous system disorders	10019476	Non-systematic Assessment

Term	Organ System	Source Vocabulary	Assessment Type	Notes	Statistical Information
Insomnia	Psychiatric disorders	MedDDRA 23.0	Non-systematic Assessment

More Info Module

Certain Agreements

Title	Organization	Phone	Extension	Email
Director of Clinical Trials	MAST Program	(310) 423-0617		GroupMedicineMAST@cshs.org

Uploaded Document Information

Type	Includes Protocol	Includes SAP	Includes ICF	Document Label	Document Date	Document Uploaded Date	Document File Name
Prot	Yes	No	No	Study Protocol	Jun 30, 2020	Jul 30, 2021	Prot_000.pdf
SAP	No	Yes	No	Statistical Analysis Plan	Mar 19, 2019	Jul 30, 2021	SAP_001.pdf

Submission Tracking

No data available

No data is available for this block.

Condition Browse Module

No data available

No data is available for this block.

Intervention Browse Module

ID	Term
D008148	Lovastatin

ID	Term
D009281	Naphthalenes
D011084	Polycyclic Aromatic Hydrocarbons
D006841	Hydrocarbons, Aromatic
D006844	Hydrocarbons, Cyclic

Masking Info

Enrolled subjects will be screened and randomized into the three study arms in a 1:1:1 ratio. 50 subjects with constipation-predominant irritable bowel syndrome (IBS-C) will be administered a 12-week course of lovastatin (21 mg PO QD). Study activities will be the same across all three arms.

SYN-010 21 mg: 21 mg lovastatin will be administered to patients diagnosed with IBS-C to evaluate whether the medication and dose is effective in increasing frequency of completely spontaneous bowel movements. The secondary objectives of the study are to assess the role of lovastatin lactone in increasing overall stool frequency and reducing abdominal pain severity, bloating severity, and rescue medication use. Additional endpoints include improvement in reported adequate relief and the effect of the study drug in lowering exhaled methane levels.

EG0000 events0 affected20 at risk

EG0011 events1 affected19 at risk

EG0020 events0 affected20 at risk

EG0002 events2 affected20 at risk

EG0010 events0 affected19 at risk

EG0022 events2 affected20 at risk