NCT02692495

Brief Summary

This study is designed as a retrospective cohort study to evaluate the potential of diagnostic procedures in defining populations of patients self-reporting unexpected and uncontrollable episodes of body odor and/or halitosis. The cohort - generally healthy individuals who had underwent multiple diagnostic tests recommended by their physicians and had not been diagnosed with any known medical condition - expressed their interest in trying gastrointestinal and nutritional diagnostic tests offered by Biolab Medical Unit. Our retrospective analysis will determine if these tests were useful as potential screening tools for metabolic body odor and halitosis.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
16

participants targeted

Target at below P25 for all trials

Timeline
Completed

Started Apr 2009

Longer than P75 for all trials

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

April 1, 2009

Completed
4.7 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 1, 2013

Completed
2.2 years until next milestone

Study Completion

Last participant's last visit for all outcomes

February 1, 2016

Completed
15 days until next milestone

First Submitted

Initial submission to the registry

February 16, 2016

Completed
10 days until next milestone

First Posted

Study publicly available on registry

February 26, 2016

Completed
1.9 years until next milestone

Results Posted

Study results publicly available

January 24, 2018

Completed
Last Updated

February 22, 2018

Status Verified

January 1, 2018

Enrollment Period

4.7 years

First QC Date

February 16, 2016

Results QC Date

March 8, 2016

Last Update Submit

January 23, 2018

Conditions

Keywords

body odorhalitosisdysbiosisleaky gutmicrobiomePATMbreath odor

Outcome Measures

Primary Outcomes (1)

  • Number of Test Results Outside the Normal Range

    The investigators would like to evaluate the strength of evidence in diagnostic accuracy of laboratory tests taken by participants (listed in the detailed description of the study), for diagnosing malodor syndromes. Values measured by the laboratory (Biolab Medical Unit) will be compared against the reference range specific to that laboratory.

    four years

Secondary Outcomes (3)

  • Discriminative Biomarkers in the Subgroups of Malodor

    three years

  • Number of Test Results Outside the Normal Range in Different Subgroups of Malodor

    Three years

  • Average Daily Added Sugar Intake Inferred From Self-reported Dietary Data in the Subgroups of Malodor

    Three years

Study Arms (2)

Body odor

individuals self-reporting recurrent episodes of uncontrollable body odor with or without halitosis

Halitosis

individuals with extra-oral halitosis, not complaining of body odors

Eligibility Criteria

Age20 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)
Sampling MethodProbability Sample
Study Population

Individuals reporting idiopathic malodor production

You may qualify if:

  • idiopathic malodor experienced over a period of several months or years
  • willing and able to complete the study
  • good general health

You may not qualify if:

  • elect not to participate in the study

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

MeBO Research LTD

London, England, W10 5LE, United Kingdom

Location

Related Publications (9)

  • Chadwick VS, Phillips SF, Hofmann AF. Measurements of intestinal permeability using low molecular weight polyethylene glycols (PEG 400). I. Chemical analysis and biological properties of PEG 400. Gastroenterology. 1977 Aug;73(2):241-6.

    PMID: 873124BACKGROUND
  • Sivakumaran T, Jenkins RT, Walker WH, Goodacre RL. Simplified measurement of polyethylene glycol 400 in urine. Clin Chem. 1982 Dec;28(12):2452-3. No abstract available.

    PMID: 7139937BACKGROUND
  • Hunnisett A., Howard J., Davies S. Gut fermentation (or the 'Auto-brewery') Syndrome: A new clinical test with initial observations and discussion of clinical and biochemical implications J.Nutr.Med.1:33-8, 1990

    BACKGROUND
  • Sheedy JR, Wettenhall RE, Scanlon D, Gooley PR, Lewis DP, McGregor N, Stapleton DI, Butt HL, DE Meirleir KL. Increased d-lactic Acid intestinal bacteria in patients with chronic fatigue syndrome. In Vivo. 2009 Jul-Aug;23(4):621-8.

    PMID: 19567398BACKGROUND
  • Ludvigsen CW, Thurn JR, Pierpont GL, Eckfeldt JH. Kinetic enzymic assay for D(-)-lactate, with use of a centrifugal analyzer. Clin Chem. 1983 Oct;29(10):1823-5.

    PMID: 6616831BACKGROUND
  • Jenq RR. How's your microbiota? Let's check your urine. Blood. 2015 Oct 1;126(14):1641-2. doi: 10.1182/blood-2015-08-661504.

    PMID: 26429966BACKGROUND
  • Khoshini R, Dai SC, Lezcano S, Pimentel M. A systematic review of diagnostic tests for small intestinal bacterial overgrowth. Dig Dis Sci. 2008 Jun;53(6):1443-54. doi: 10.1007/s10620-007-0065-1.

    PMID: 17990113BACKGROUND
  • Drossman DA. The functional gastrointestinal disorders and the Rome III process. Gastroenterology. 2006 Apr;130(5):1377-90. doi: 10.1053/j.gastro.2006.03.008. No abstract available.

    PMID: 16678553BACKGROUND
  • Mount JN, Heduan E, Herd C, Jupp R, Kearney E, Marsh A. Adaptation of coenzyme stimulation assays for the nutritional assessment of vitamins B1, B2 and B6 using the Cobas Bio centrifugal analyser. Ann Clin Biochem. 1987 Jan;24 ( Pt 1):41-6. doi: 10.1177/000456328702400106.

    PMID: 3827183BACKGROUND

MeSH Terms

Conditions

Nutritional and Metabolic DiseasesBody OdorHalitosisDysbiosis

Condition Hierarchy (Ancestors)

Signs and SymptomsPathological Conditions, Signs and SymptomsSigns and Symptoms, DigestivePathologic Processes

Results Point of Contact

Title
Irene Gabashvili, Scientific Director
Organization
MEBO Research

Study Officials

  • Irene Gabashvili, PhD

    MeBO Research

    PRINCIPAL INVESTIGATOR

Publication Agreements

PI is Sponsor Employee
Yes

Study Design

Study Type
observational
Observational Model
COHORT
Time Perspective
RETROSPECTIVE
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

February 16, 2016

First Posted

February 26, 2016

Study Start

April 1, 2009

Primary Completion

December 1, 2013

Study Completion

February 1, 2016

Last Updated

February 22, 2018

Results First Posted

January 24, 2018

Record last verified: 2018-01

Data Sharing

IPD Sharing
Will share

de-identified individual participant data will be made partially available

Available IPD Datasets

Individual Participant Data Set (10.17632/8bk6h6bmkr.1)Access
Clinical Study Report Access
Preprint (10.1101/139014)Access

Locations