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Clinical Trial Summary

The primary objective of this study was to evaluate the safety and tolerability of 3 doses of fungal lipase in the treatment of adults with mildly elevated serum triglycerides. The secondary objective was to assess the efficacy of fungal lipase in reducing serum triglycerides in adults with mildly elevated serum triglycerides.


Clinical Trial Description

According to the World Health Organization, ischemic heart diseases and stroke were the leading causes of death globally in 2019, accounting for 16% and 11% of the world's total deaths, respectively. The American Heart Association reported in 2020 that approximately 87% of all strokes are ischemic strokes, in which blood flow to the brain is blocked (Virani et al). That blockage is typically caused by an accumulation of fatty deposits inside triglycerides (atherosclerosis). Higher levels of serum triglycerides are linked to an increased risk of ischemic stroke in men and women. Researchers tracked 7,579 women and 6,372 men whose triglyceride and cholesterol measurements were taken in the late 1970s. Subjects were followed for up to 33 years. During the follow-up period, 837 women and 837 men developed ischemic stroke. Both men and women had a higher risk of stroke with high levels of triglycerides, in particular triglyceride levels of 5 mmol/L (443 mg/dL or 5.0 mmol/L) or more. These individuals carried four-fold greater stroke risk than those with lower levels (Varbo et al). Each of the current treatments for hypertriglyceridemia has negative side effects and therefore many individuals that suffer from this condition decline treatment to reduce stroke risk. Oral supplementation with a fungal lipase preparation from Candida cylindracea (formerly rugosa), commonly found in dietary supplements for digestive health, is a candidate strategy to lower triglycerides without side effects. During digestion, each of lingual, gastric, and pancreatic lipases combine to remove the outer 2 fatty acids from ingested, dietary triglycerides, thus forming monoglycerides and 2 free fatty acids. Following uptake by intestinal enterocytes, the free fatty acids are re-esterified with the monoglycerides to reform triglycerides before release in to the bloodstream. Overconsumption of dietary fats can thus lead to elevated levels of serum triglycerides. Candida cylindracea (formerly rugosa) lipase, however, hydrolyzes all three fatty acids from dietary triglycerides to release free fatty acids and the glycerol backbone. It is predicted that most of these free fatty acids and glycerol molecules enter the bloodstream without reformation to triglycerides by the major metabolic pathway to reform the triglycerides from monoglycerides. Nonetheless, an alternate metabolic pathway to generate triglycerides from free fatty acids alone does exist in enterocytes. The investigators tested the hypothesis that fungal lipase-mediated lowering of dietary monoglycerides would lower serum triglyceride levels in a randomized, double-blind, placebo controlled parallel arm clinical trial of 39 subjects with elevated serum triglyceride levels. Subjects were between 18 and 75 years of age, with good general health and mildly elevated serum triglycerides (150 mg/dL to 500 mg/dL, or 1.7 mmol/L to 5.6 mmol/L). The study included 4 study site visits over a 13 to 16 week period (including baseline period). Subjects underwent an initial phone screen and were asked questions regarding their age and general health. Eligible subjects were scheduled for a screening visit. Subjects attend all visits in a fasted state. At the screening visit (Visit 1), the inclusion and exclusion criteria were reviewed and the overall details of the study were explained and informed consent was obtained. Blood pressure, body weight, and body mass index (BMI) were measured. Family and medical history and general health were recorded. A fasting blood sample was collected and serum triglycerides were measured. Subjects with serum triglyceride levels between 151 mg/dL (1.71 mmol/L) and 499 mg/dL (5.65 mmol/L) were invited to participate in the study. Eligible subjects were scheduled to return to the study site within 4 weeks for their baseline visit (Visit 2). At Visit 2, a fasting blood sample (12 mL) was collected for glucose, electrolyte, triglyceride, cholesterol (including HDL, LDL, VLDL), liver and kidney function, and HbA1C measurements. Subjects were randomized to one of 4 arms: 1) placebo (n = 9), 2) 1X low-dose (n = 10), 3) 2X medium-dose (n = 10), and 4) 3X high-dose (n = 10). Subjects were provided with a 90 day supply of investigational study product (lipase or placebo) and were instructed to take one dose with each major meal (3 doses per day) for the next 90 days. Subjects were instructed to follow their standard diet and exercise routine for the duration of the study. Subjects were scheduled to return to the study site after 30 days (+/- 4 days) for Visit 3. At Day 30 (Visit 3), a fasting blood sample (12 mL) was collected for glucose, electrolytes, triglyceride, cholesterol (including HDL, LDL, VLDL), liver and kidney function, and HbA1C measurements. Subjects were scheduled to return to the study site for the 4th and final visit at Day 90. At Day 90, a fasting blood sample (12 mL) was collected for glucose, electrolyte, triglyceride, cholesterol (including HDL, LDL, VLDL), liver and kidney function, and HbA1C measurements. Subjects returned any unused study product and compliance was assessed. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT05295134
Study type Interventional
Source BIO-CAT Microbials, LLC
Contact
Status Completed
Phase N/A
Start date March 13, 2014
Completion date November 4, 2014

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