ClinicalTrials.gg
Status unknownNCT04113096Updated Oct 8, 2019

Dibenzyl Trisulphide (GUINEAHEN WEED) for Stage IV Cancer

An Early Phase 1 interventional study of Dibenzyl trisulphide capsules and Dibenzyl trisulphide capsules in Stage IV Prostate Cancer, Stage IV Colon Cancer and Stage IV Breast Cancer, sponsored by The University of The West Indies. Status unknown at 1 site in Jamaica. Open to participants aged 12 Years and older. Per ClinicalTrials.gov, last updated 2019-10-08.

Sponsored by The University of The West Indies · Early Phase 1, Interventional, and Treatment

The sponsor has not verified this record recently (last verified Oct 2018), so the status shown — last known as Recruiting — may be out of date.
Phase
Early Phase 1
Study type
Interventional
Enrollment
104
Allocation
Randomized
Ages
12 Years and older
Sex
All
01

Study summary

This study is being done to find the effect of Dibenzyl Trisulphide (active ingredient in Guinea Hen Weed in combination in patients with stage four cancer of the breast, prostate, cervix and colon.

Read the detailed description

There have been many claims of the value of Guinea Hen weed in the treatment of different cancers. The preparation is readily available and used locally. The team proposes to validate the studies done on cancer cell lines by conducting a clinical trial to determine the clinical benefit in advanced and metastatic cancers.

02

Conditions studied

  • Stage IV Prostate Cancer
  • Stage IV Colon Cancer
  • Stage IV Breast Cancer
  • Stage IV Cancer of the Cervix
03

In context

Prostatic Neoplasms

7,046 studies on the registry are indexed under Prostatic Neoplasms; 1,580 are open to participants now.

This study's planned enrollment of 104 is above the median of 60 across 5,348 interventional studies indexed under Prostatic Neoplasms.

Browse Prostatic Neoplasms studies →

Lead sponsor

The University of The West Indies is the lead sponsor of 64 studies on the registry; 15 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
12 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Eligibility criteria

Inclusion Criteria:

  • Age: Greater than 12 years.
  • Documented histologic evidence of cancer
  • Staged as stage IV
  • World Health Organization (WHO) Performance Status of between 0 and 2
  • Radiological confirmation of with bone scan or X ray, CT and/or MRI scan Exclusion Criteria

    • Cancer stages less than stage 4
    • Pregnant women
    • Children 0 - 12 years
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Metastases

Cancer that has spread from where it began to other parts of the body. “Metastatic” cancer is cancer that has spread this way.

05

Study design

Phase
Early Phase 1
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
104 participants (estimated)

Study arms

  • Experimental
    Breast Cancer Stage IV

    Stage IV Breast Cancer: Dibenzyl trisulphide capsules (20mg once daily)/6 months

    Drug: Dibenzyl trisulphide capsules · Drug: Stage IV Breast Cancer Placebo

  • Experimental
    Colon Cancer Stage IV

    Stage IV Colon Cancer:Dibenzyl trisulphide capsules (20 mg one daily for 6 months

    Drug: Dibenzyl trisulphide capsules · Drug: Stage IV: Colon Cancer Placebo

  • Experimental
    Cervical Cancer Stage IV

    Stage IV Cancer of the Cervix: Dibenzyl trisulphide capsules (20 mg once daily) for 6 months

    Drug: Dibenzyl trisulphide capsules · Drug: Cervical Cancer Stage IV Placebo

  • Experimental
    Cancer of the Prostate Stage IV

    Stage IV Prostate cancer:Dibenzyl trisulphide capsules (20 mg once daily) for 6 months

    Drug: Dibenzyl trisulphide capsules · Drug: Cancer of the Prostate Placebo

Interventions

  • DrugDibenzyl trisulphide capsules

    20 mg once daily for 6 months

    Also known as: Guineahen Weed capsules

  • DrugDibenzyl trisulphide capsules

    20 mg once daily for 6 months

    Also known as: Guineahen Weed capsules

  • DrugDibenzyl trisulphide capsules

    20 mg once daily for 6 months

    Also known as: Guineahen Weed capsules

  • DrugDibenzyl trisulphide capsules

    20 mg once daily for 6 months

    Also known as: Guineahen Weed capsules

  • DrugStage IV Breast Cancer Placebo

    20 mg once daily for 6 months

    Also known as: Placebo

  • DrugStage IV: Colon Cancer Placebo

    20 mg once daily for 6 months

    Also known as: Placebo

  • DrugCervical Cancer Stage IV Placebo

    20 mg once daily for 6 months

    Also known as: Placebo

  • DrugCancer of the Prostate Placebo

    20 mg once daily for 6 months

    Also known as: Placebo

06

What researchers measure

Primary outcomes

  1. Prostate Cancer

    50% change in the Prostate Specific Antigen Response (PSA)

    Time frame: Every 8 weeks up to 52 weeks

  2. Breast Cancer

    Changes in size of the metastatic legions

    Time frame: Every 8 weeks up to 52 weeks

  3. Colon Cancer

    50% change in the Carcinoembryonic Antigen (CEA)

    Time frame: Every 8 weeks up to 52 weeks

  4. Cervical Cancer

    50% change in renal function (Renal output)

    Time frame: Every 8 weeks up to 52 weeks

Secondary outcomes

  1. Haemoglobin Red Cell Test

    Blood - haemoglobin red cell count grams/decilitre

    Time frame: Every 8 weeks upto 52 weeks

  2. Blood Platelets Tests

    Blood; platelet count per microlitre

    Time frame: Every 8 weeks upto 52 weeks

  3. Blood urea Tests

    Blood Urea Nitrogen

    Time frame: Every 8 weeks upto 52 weeks

  4. Blood Creatinine

    Amount of creatinine in the blood

    Time frame: Every 8 weeks upto 52 weeks

  5. Blood Electrolytes

    Amount of electrolytes in the blood

    Time frame: Every 8 weeks upto 52 weeks

  6. Blood Calcium

    Amount of calcium in the blood

    Time frame: Every 8 weeks upto 52 weeks

  7. Blood Phosphorus

    Amount of phosphorus in the blood

    Time frame: Every 8 weeks upto 52 weeks

  8. Prothrombin Test

    Blood prothrombin time (PT).

    Time frame: Every 8 weeks upto 52 weeks

  9. Partial Prothrombin Test

    Partial thromboplastin time( PTT).

    Time frame: Every 8 weeks upto 52 weeks

  10. White Blood Cell Test

    white cell count per microlitre

    Time frame: every 8 weeks up to 52 weeks

  11. Computed Tomography (CT) Scan

    A pelvis baseline scan and level of metastases quantified by a single radiologist.

    Time frame: Every 8 weeks up to 52 weeks

  12. Nuclear bone scintigraphy

    A bone scintigraphy or X-ray to show number and site of metastases noted

    Time frame: every 8 weeks up to 52 weeks

  13. Bilirubin Direct test

    Bilirubin direct, mmol per litre

    Time frame: Every 8 weeks up to 52 weeks

  14. Bilirubin Indirect test

    Bilirubin indirect mmol per litre

    Time frame: Every 8 weeks up to 52 weeks

  15. Alkaline Phosphate level test (ALP)

    Amount of Alkaline Phosphate enzyme in blood units per litre

    Time frame: Every 8 weeks up to 52 weeks

  16. Aspartate Aminotransferase test

    Level of the aspartate aminotransferase enzymes in the blood units per litre

    Time frame: Every 8 weeks up to 52 weeks

  17. Gamma-glutamyl transferase test

    Level of the Gamma-glutamyl transferase units per litre

    Time frame: Every 8 weeks up to 52 weeks

  18. Lactate dehydrogenase test

    Level of Lactate dehydrogenase units per litre

    Time frame: Every 8 weeks up to 52 weeks

  19. Respiration

    Number of breaths per minute

    Time frame: Every 8 weeks up to 52 weeks

  20. Temperature measurement

    Temperature; degrees centigrade

    Time frame: Every 8 weeks up to 52 weeks

  21. Pulse

    Pulse-beats per minute

    Time frame: Every 8 weeks up to 52 weeks

  22. Cancer Survival Curves

    Proportion of patients alive after administration of intervention

    Time frame: Every 8 weeks up to 52 weeks

07

Study locations

1 of 1 sites recruiting
08

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started Oct 2018 (actual). Primary completion is estimated for Sep 2020, 23 months after the start.

Of 243 non-industry phase 1 interventional studies under Prostatic Neoplasms, half reached primary completion within 46 months of starting (the median), counting those still running; a quarter within 27 and three quarters within 76. This study's planned 23 months is below that.

Counting every sponsor, half of 455 studies reached it within 43 months; a quarter within 23 and three quarters within 68.

How these figures are worked out, and which studies are left out of them.

Registered
Nov 26, 2018
First posted
Oct 2, 2019
StartActual
Oct 1, 2018
Primary completionEst.
Sep 30, 2020
CompletionEst.
Sep 30, 2020
Last update
Oct 8, 2019
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Oct 8, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT04113096
Lead sponsor
The University of The West Indies
Responsible party
Sponsor
First posted
Oct 2, 2019
Start date
Oct 1, 2018
Primary completion
Sep 30, 2020 (estimated)
Completion
Sep 30, 2020 (estimated)
Last update
Oct 8, 2019

Study contacts

Horace Fletcher, MBBS/DM
Contact
horace.fletcher@uwimona.edu.jm
876 927 1145
Gilian Wharfe, MBBS/DM
Contact
gilian.wharfe@uwimona.edu.jm
876.927.1410
LAD Williams
principal investigator · University of the West Indies, Mona

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is status unknown, as verified in Oct 2018. You cannot join it, but the record below documents what was studied.

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