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Kidney Transplant; ComplicationsEarly Phase 1NCT04428190

Prebiotic Therapy to Improve Outcomes of Renal Transplant

A Early Phase 1 study testing Human Milk Oligosaccharides (HMO) in people with Kidney Transplant; Complications, run by London Health Sciences Centre Research Institute OR Lawson Research Institute of St. Joseph's at 1 site in Canada.

Unknown status

Status not confirmed. The sponsor has not verified this record for over two years, so it may be out of date.

Official record
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Trial summary

An investigator initiated pilot study: two arm, double blind, placebo controlled, randomized, group of approximately 60 patients undergoing a kidney transplant. Participants will be treated with human milk oligosaccharide (HMO) prebiotic versus placebo over 12 weeks from start of the investigational medication date… Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Kidney Transplant; Complications
What is being tested?
Human Milk Oligosaccharides (HMO)
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
60 participants
Where
1 siteCanada
Study dates
23 Feb 2022to 15 Dec 2024
Phase
Early Phase 1
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • 18 years of age and over receiving a kidney transplant.

Who cannot join

  • Under 18 years of age
  • Inability to give consent
  • Usage of probiotics or other prebiotics.
  • Have had carcinomas during the last 5 years
  • Bowel surgery
  • Crohn ́s disease and other conditions.

Trial locations and contacts

1 site in 1 country.

Canada1 site, 1 recruiting
  • London Health Sciences Centre

    London, Ontario, N6A 5A5

    Cadence Baker, MSc, 5196858500 ext. 34755, cadence.baker@lhsc.on.ca

    Alp Sener, MD, PhD

    Recruiting

Other trials in Canada

About this study

An investigator initiated pilot study: two arm, double blind, placebo controlled, randomized, group of approximately 60 patients undergoing a kidney transplant. Participants will be treated with human milk oligosaccharide (HMO) prebiotic versus placebo over 12 weeks from start of the investigational medication date (approximately 3 months) to test whether HMO can improve renal transplant outcomes. Participants will be followed up for 3 months after after they complete the treatment portion of the study. HMO sachets will be administered to determine the safety and efficacy of HMO relative to placebo in improving renal transplant outcomes in patients by reducing delayed graft function and side effects from post transplant therapy.

Read the detailed description

Nearly three million people worldwide suffer from end stage renal disease (ESRD), which has debilitating consequences on the quality of life of patients There is a discrepancy between the availability of organs and the increasing number of patients placed on the waiting list. Canadians with ESRD requiring kidney transplantation has increased by 38% from 2005-2014, whereas the number of transplantable organs has not met this growing need.

As clinicians use more marginal donors, the effects of ischemic injury from the procurement process become more pronounced. This ischemia reperfusion injury (IRI) has been linked to increased delayed graft function, rejection and decreased long-term function. Approximately 20% of transplanted patients subsequently return to dialysis due to poor graft function. Therefore, one of the major goals of the transplant community has now shifted to ensuring the longevity of transplanted organs. Research priorities need to shift towards developing ways to ensure the longevity of grafts through modification of recipient factors.

Patients are also required to remain on immunosuppressive drugs following transplant in order to maintain the graft. These have a variety of side effects, including diarrhea and intestinal malabsorption, which can lead to a lack of patient compliance with post transplant therapy and a reduced quality of life.

Patients with ESRD also have an expansion of bacteria that produce urease and uric acid and produce fewer short-chained fatty acids and vitamins.

This is important as it is theorized that the production of short-chained fatty acids by microorganisms in the GI tract are crucial as both the energy source, and to the maintenance of intestinal permeability, which contribute to a healthy gastrointestinal tract.

The expansion of bacteria that produce urease and uric acid contribute to toxicity and inflammation in the GI tract that can cause complications in these patients.

In order to reduce both delayed graft function and side effects from post transplant therapy, novel support options are required. One option is the use of prebiotics.

Non-digestible sugar prebiotics have potential for use in these patients. The Principal Investigator/Sponsor will test this potential in a pilot clinical study with a Human milk oligosaccharides (HMO) prebiotic mix that have been shown to stimulate the production of short chain fatty acids, especially propionate. Propionate has been shown to be important in attenuating hypertrophy, fibrosis, vascular dysfunction and hypertension and is extremely important for the gut kidney axis. Prebiotics offer a safe and well-tolerated therapy, which could have a positive impact by improving systemic inflammatory responses, improving gut barrier function, helping to reduce immunosuppressive drug side effects and stabilizing its dosing.

This study will assess blood, and urine samples collected as part of the participant's post-transplant follow up at eight time points to determine graft function.

Urine and a faecal sample will be collected at 6 time points for microbiome analyses at baseline, day 7, 30, 60, 120 and 180 from the date of starting the study product. Prior to commencing their treatment, and at days 60,90,150, and 180, the research coordinator (blinded to the randomisation) will assess patients using the SF-36 and GI Health questionnaires during clinic visits, or by telephone interview.

Protocol compliance will be tested through product count and interviews at each follow-up visit. Side effects will be assessed using standardized case report forms at each visit. Participants will be encouraged to report any events they may experience directly to the coordinator.

Participants who withdraw consent to continue treatments, will be encouraged to undergo the planned assessments. Withdrawal at the request of investigators or medical personnel may include, but are not limited to:

  1. Symptoms are deemed to be potentially related to the study product
  2. New diagnosis of exclusion criteria;
  3. Unacceptable side effects;
  4. Death

Estimated time to complete recruitment: Averaging 86 weeks, approximately 20 months

Being tested
Human Milk Oligosaccharides (HMO), Placebo
Keywords
kidney, kidney transplant, prebiotic, human milk oligosaccharide, HMO, renal transplant

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Human Milk Oligosaccharides (HMO)Dietary supplement

    Also called Prebiotic

    Sachet containing 10 grams of HMO

  • PlaceboOther

    Also called Placebo for HMO

    Sachet manufactured to mimic 10g of HMO

Study groups in NCT04428190
Study groupRoleWhat they receive
Human Milk Oligosaccharide (HMO)Active comparator10 g sachet, self-administered for 3 months. 2'-O-fucosyllactose and lacto-N-neotetraose, novel human milk oligosaccharide (HMO) sugars have been shown to stimulate the production of short chain fatty acids, especially propionate. Propionate has been shown to be important in attenuating hypertrophy, fibrosis, vascular dysfunction and hypertension (Bartolomaeus H et al 2019Mar12) and extremely important for the gut kidney axis (Li L et al 2017Dec11).
Receives: Dietary Supplement: Human Milk Oligosaccharides (HMO)
PlaceboPlacebo comparator10 g sachet, self-administered for 3 months. Placebo sachets are identical to the HMO sachets in color, taste, smell, size and shape
Receives: Other: Placebo

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Short Form Health Survey (SF-36)

    The Short Form Health Survey will measure participant satisfaction using a scale from 1 - 5, 1 being the best outcome, and 5 being the worst outcome.

    Measured: 24 weeks

  2. Adverse Events

    Adverse events will be recorded through case report forms and reported to the principal investigator. Side effects will be assessed using standardized case report forms at each visit. Participants are encouraged to contact the coordinator to report any concerns.

    Measured: 24 weeks

Secondary outcomes (2)
  1. Microbiome changes from baseline to end of treatment

    Changes in the entire bacterial community from baseline to end of study will be assessed in the lab from faecal and urine samples collected by the participant. The microbes may vary by participant and the study will be looking at which ones present themselves in each case. Units of measure via culture are colony forming units per g (cfu/g).

    Measured: 12 weeks

  2. Microbiome changes post intervention

    Changes in the entire bacterial community after study intervention will be assessed in the lab from faecal and urine samples collected by the participant. The microbes may vary by participant and this outcome measure will be looking at which ones present themselves in each case.

    Measured: 12 weeks

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted11 Jun 2020
  2. Study start23 Feb 2022
  3. Primary completion15 Oct 2024 (estimated)
  4. Study completion15 Dec 2024 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Early Phase 1
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Model description
One placebo arm and one active treatment arm, participants will be assigned to each arm equally.
Masking
Double blind
Who is masked
Participant, Investigator
Enrolment
60 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04428190
Sponsor's protocol ID
PRT01
Status last verified
Oct 2023
First submitted
28 May 2020
Last updated
1 Nov 2023
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Publications

  • Pluznick JL. Gut microbiota in renal physiology: focus on short-chain fatty acids and their receptors. Kidney Int. 2016 Dec;90(6):1191-1198. doi: 10.1016/j.kint.2016.06.033. Epub 2016 Aug 26.

    PubMed 27575555
  • Lee JR, Muthukumar T, Dadhania D, Taur Y, Jenq RR, Toussaint NC, Ling L, Pamer E, Suthanthiran M. Gut microbiota and tacrolimus dosing in kidney transplantation. PLoS One. 2015 Mar 27;10(3):e0122399. doi: 10.1371/journal.pone.0122399. eCollection 2015.

    PubMed 25815766
  • Elison E, Vigsnaes LK, Rindom Krogsgaard L, Rasmussen J, Sorensen N, McConnell B, Hennet T, Sommer MO, Bytzer P. Oral supplementation of healthy adults with 2'-O-fucosyllactose and lacto-N-neotetraose is well tolerated and shifts the intestinal microbiota. Br J Nutr. 2016 Oct;116(8):1356-1368. doi: 10.1017/S0007114516003354. Epub 2016 Oct 10.

    PubMed 27719686
  • Harvie RM, Chisholm AW, Bisanz JE, Burton JP, Herbison P, Schultz K, Schultz M. Long-term irritable bowel syndrome symptom control with reintroduction of selected FODMAPs. World J Gastroenterol. 2017 Jul 7;23(25):4632-4643. doi: 10.3748/wjg.v23.i25.4632.

    PubMed 28740352
  • Dubberke ER, Riddle DJ; AST Infectious Diseases Community of Practice. Clostridium difficile in solid organ transplant recipients. Am J Transplant. 2009 Dec;9 Suppl 4(0 4):S35-40. doi: 10.1111/j.1600-6143.2009.02891.x.

    PubMed 20070693
  • Rayes N, Seehofer D, Theruvath T, Schiller RA, Langrehr JM, Jonas S, Bengmark S, Neuhaus P. Supply of pre- and probiotics reduces bacterial infection rates after liver transplantation--a randomized, double-blind trial. Am J Transplant. 2005 Jan;5(1):125-30. doi: 10.1111/j.1600-6143.2004.00649.x.

    PubMed 15636620
  • Sawas T, Al Halabi S, Hernaez R, Carey WD, Cho WK. Patients Receiving Prebiotics and Probiotics Before Liver Transplantation Develop Fewer Infections Than Controls: A Systematic Review and Meta-Analysis. Clin Gastroenterol Hepatol. 2015 Sep;13(9):1567-74.e3; quiz e143-4. doi: 10.1016/j.cgh.2015.05.027. Epub 2015 Jun 2.

    PubMed 26044318
  • Lobb I, Jiang J, Lian D, Liu W, Haig A, Saha MN, Torregrossa R, Wood ME, Whiteman M, Sener A. Hydrogen Sulfide Protects Renal Grafts Against Prolonged Cold Ischemia-Reperfusion Injury via Specific Mitochondrial Actions. Am J Transplant. 2017 Feb;17(2):341-352. doi: 10.1111/ajt.14080. Epub 2016 Nov 29.

    PubMed 27743487
  • Al KF, Bisanz JE, Gloor GB, Reid G, Burton JP. Evaluation of sampling and storage procedures on preserving the community structure of stool microbiota: A simple at-home toilet-paper collection method. J Microbiol Methods. 2018 Jan;144:117-121. doi: 10.1016/j.mimet.2017.11.014. Epub 2017 Nov 16.

    PubMed 29155236
  • Bao Y, Al KF, Chanyi RM, Whiteside S, Dewar M, Razvi H, Reid G, Burton JP. Questions and challenges associated with studying the microbiome of the urinary tract. Ann Transl Med. 2017 Jan;5(2):33. doi: 10.21037/atm.2016.12.14.

    PubMed 28217698
  • Perico N, Cattaneo D, Sayegh MH, Remuzzi G. Delayed graft function in kidney transplantation. Lancet. 2004 Nov 13-19;364(9447):1814-27. doi: 10.1016/S0140-6736(04)17406-0.

    PubMed 15541456
  • Wong J, Piceno YM, DeSantis TZ, Pahl M, Andersen GL, Vaziri ND. Expansion of urease- and uricase-containing, indole- and p-cresol-forming and contraction of short-chain fatty acid-producing intestinal microbiota in ESRD. Am J Nephrol. 2014;39(3):230-237. doi: 10.1159/000360010. Epub 2014 Mar 8.

    PubMed 24643131
  • Bartolomaeus H, Balogh A, Yakoub M, Homann S, Marko L, Hoges S, Tsvetkov D, Krannich A, Wundersitz S, Avery EG, Haase N, Kraker K, Hering L, Maase M, Kusche-Vihrog K, Grandoch M, Fielitz J, Kempa S, Gollasch M, Zhumadilov Z, Kozhakhmetov S, Kushugulova A, Eckardt KU, Dechend R, Rump LC, Forslund SK, Muller DN, Stegbauer J, Wilck N. Short-Chain Fatty Acid Propionate Protects From Hypertensive Cardiovascular Damage. Circulation. 2019 Mar 12;139(11):1407-1421. doi: 10.1161/CIRCULATIONAHA.118.036652.

    PubMed 30586752
  • Li L, Ma L, Fu P. Gut microbiota-derived short-chain fatty acids and kidney diseases. Drug Des Devel Ther. 2017 Dec 11;11:3531-3542. doi: 10.2147/DDDT.S150825. eCollection 2017.

    PubMed 29270002
  • Cooper TE, Scholes-Robertson N, Craig JC, Hawley CM, Howell M, Johnson DW, Teixeira-Pinto A, Jaure A, Wong G. Synbiotics, prebiotics and probiotics for solid organ transplant recipients. Cochrane Database Syst Rev. 2022 Sep 20;9(9):CD014804. doi: 10.1002/14651858.CD014804.pub2.

    PubMed 36126902

Questions about this trial

What is this clinical trial studying?

A Early Phase 1 study testing Human Milk Oligosaccharides (HMO) in people with Kidney Transplant; Complications, run by London Health Sciences Centre Research Institute OR Lawson Research Institute of St. Joseph's at 1 site in Canada.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 1 inclusion and 6 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: status not confirmed, as of the sponsor's last update on 1 Nov 2023. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Canada. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Early Phase 1 (sometimes called Phase 0) studies give a very small amount of a treatment to a few people, mainly to see how the body handles it.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Results are not available in the source record.

How can a doctor refer a patient or contact the research team?

Contact Mounirah May (519-685-8500 ext. 34779, mounirah.may@lhsc.on.ca), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Short Form Health Survey (SF-36) (time frame: 24 weeks). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT04428190, which also lists 15 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 1 Nov 2023.

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