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Effect of 4 weeks of oral 6-bromotryptophan on safety, pharmacokinetics and efficacy in metabolic syndrome individuals (BROMO trial)

Effect of 4 weeks of oral 6-bromotryptophan on safety, pharmacokinetics and efficacy in metabolic syndrome individuals (BROMO trial) - BROMO trial

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
NL-OMON
Registry ID
NL-OMON53935
Enrollment
36
Registered
2023-02-27
Start date
2023-03-28
Completion date
Unknown
Last updated
2025-09-08

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

diabetes Diabetes mellitus

Interventions

Participants will be given placebo, 2mg, 4mg or 8mg of 6-BT capsules once daily for 4 weeks (n=9 per arm, total of 36 participants).

Sponsors

Academisch Medisch Centrum
Lead Sponsor

Eligibility

Age
18 Years to 99 Years

Inclusion criteria

Inclusion criteria: • Metabolic syndrome AND/OR insulin resistance, defined as: * Metabolic syndrome: >=3 criteria out of the 5 following criteria: o fasting plasma glucose >=5.6*mmol/L o triglycerides >=1.7*mmol/L o waist circumference >=102*cm o high-density lipoprotein cholesterol =130/85*mm Hg. * Insulin resistance: HOMA-IR (>2.5) • Male • Caucasian • 35-70 years old

Exclusion criteria

Exclusion criteria: - Use of systemic medication (except for paracetamol), including proton pump inhibitors, antibiotics and pro-/prebiotics in the past three months or during the study period. - A history of a cardiovascular event - A history of cholecystectomy - Overt untreated gastrointestinal disease or abnormal bowel habits - Liver enzymes>2.5*fold higher than the upper limit of normal range - Smoking - Alcohol abuse - Exclusion criterion for MRI liver (metal in body, claustrophobic etc.)

Design outcomes

Primary

MeasureTime frame
The principal outcome will be patient safety and tolerability (biochemical parameters of kidney and liver function and complete blood count, adverse events) in relation to improvements in glucose homeostasis (mixed-meal tests and continuous glucose monitoring).

Secondary

MeasureTime frame
Secondary read-outs will include changes in: immunological profile (ex vivo stimulation of monocytes, and immunophenotyping of peripheral blood mononuclear cells (PBMC)) and gut microbiome composition (16s rRNA sequencing). Also, liver fat content will be determined before and at end of the trial by MRI. As this food derived metabolite is given to humans for the first time, we will also study its pharmacokinetics by measuring serum 6-BT concentrations in serum and urine at different time-points after oral intake.

Countries

Netherlands

Outcome results

None listed

Source: NL-OMON (via WHO ICTRP)