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Lactobacillus Plantarum in Preventing Acute Graft Versus Host Disease in Children Undergoing Donor Stem Cell Transplant

The Effectiveness of Lactobacillus Plantarum (LBP, IND# 17339) in Preventing Acute Graft-Versus-Host Disease (GvHD) in Children Undergoing Alternative Hematopoietic Progenitor Cell Transplantation (HCT)

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03057054
Enrollment
173
Registered
2017-02-17
Start date
2018-04-30
Completion date
2026-06-30
Last updated
2025-10-06

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

Conditions

Acute Graft Versus Host Disease, Hematopoietic and Lymphatic System Neoplasm, Leukemia, Lymphoma

Brief summary

This randomized phase III trial studies how well Lactobacillus plantarum works in preventing acute graft versus host disease in children undergoing donor stem cell transplant. Lactobacillus plantarum may help prevent the development of gastrointestinal graft versus host disease in children, adolescents, and young adults undergoing donor stem cell transplant.

Detailed description

PRIMARY OBJECTIVE: I. To determine efficacy of orally-administered Lactobacillus plantarum (LBP) in preventing the development of gastrointestinal (GI) acute graft versus host disease (aGvHD) in children and adolescents undergoing alternative donor allogeneic hematopoietic cell transplantation (alloHCT). EXPLORATORY OBJECTIVES: I. To determine whether orally-administered LBP decreases the incidence of grade II-IV aGvHD following alternative donor alloHCT. II. To determine whether LBP administration maintains intestinal integrity as measured by mean serum citrulline levels and reduction in mucosal barrier injury (MBI) bacteremia. III. To measure the effects of LBP on the intestinal flora phylogenetic composition during and after alternative donor alloHCT using 16S ribosomal ribonucleic acid (rRNA) gene deep sequencing. IV. To measure effects of LBP on intestinal flora function during and after alternative donor alloHCT using metagenomic and metabolite profiling. V. To measure proposed immunomodulatory effects of LBP in mean serum levels of alloreactive-induced inflammatory cytokines (IL-2, IL-6, IL-12p70, IFN gamma, TNF alpha, etc) in patients receiving LBP compared to placebo. VI. To determine whether LBP administration reduces the incidence of Clostridium difficile-associated diarrhea in alternative donor HCT patients. VII. To determine whether LBP administration reduces hospital days within the first 120 days post hematopoietic cell transplant (HCT). VIII. To define the safety of orally administered LBP strains 299 and 299v in alternative donor HCT patients as measured by incidence of Lactobacillus plantarum bacteremia. OUTLINE: Patients are randomized to 1 of 2 arms. ARM I: Patients receive Lactobacillus plantarum strains 299 and 299v orally (PO) or through nasojejunal (NJ), nasogastric (NG) or gastronomy (G) tube once daily (QD) on day 1 of transplant conditioning regimen to 56 days post alloHCT. Patients undergo alloHCT at day 0. ARM II: Patients receive placebo PO or through NJ, NG or G tube QD on day 1 of transplant conditioning regimen to 56 days post alloHCT. Patients undergo alloHCT at day 0. After completion of study treatment, patients are followed up for 120 days from alloHCT.

Interventions

PROCEDUREAllogeneic Hematopoietic Stem Cell Transplantation

Undergo alloHCT

BIOLOGICALLactobacillus plantarum strain 299

Given PO or via NJ, NG or G tube

Given PO or via NJ, NG or G tube

OTHERPlacebo Administration

Given PO or via NJ, NG or G tube

Sponsors

National Cancer Institute (NCI)
CollaboratorNIH
Children's Oncology Group
Lead SponsorNETWORK

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
ALL
Age
2 Years to 25 Years
Healthy volunteers
No

Inclusion criteria

* All clinical and laboratory studies, if applicable, must be obtained within 21 days prior to start of protocol therapy (repeat if necessary); protocol therapy must begin within 6 months of study enrollment * Patient must have a diagnosis that is managed with an alternative donor allogeneic hematopoietic cell transplant * Patients must have a Lansky (for patients =\< 16 years of age) or Karnofsky (for patients \> 16 years of age) performance status score of \>= 70; patients who are unable to walk because of a chronic underlying condition (such as paralysis), but who are up in a wheelchair, will be considered ambulatory for the purpose of assessing performance score * Hematopoietic cell transplant (HCT) * Patient must be receiving cells from alternative donor defined as one of the following: * Unrelated donor with a complete human leukocyte antigen (HLA) match or a 1 or 2 HLA mismatch, considering only HLA-A, HLA-B, HLA-C, and HLA-DRB1 * Related donor with a 1 or more HLA mismatch (including haplo-identical) * Note: History of HCT or other cellular therapy (e.g. chimeric antigen receptor \[CAR\]-T cells, donor lymphocyte infusions) is permitted

Exclusion criteria

* Patient plans on receiving stem cells from a matched (8/8) related donor * Patient has used a probiotic dietary supplement within the previous 30 days of enrollment; (consumption of yogurt products is allowed) * Patient has a history of severe GI tract insult including but not limited to previous bowel perforation, grade 4 neutropenic colitis or typhlitis, inflammatory bowel syndrome, short small bowel syndrome (Crohn's disease, ulcerative colitis), history of gastrointestinal GVHD, or history of bowel resection * Patient has a medical, psychiatric or social issue that would compromise patient safety or compliance with protocol therapy, or interfere with consent, study participation, follow up, or interpretation of study results * Female patients who are pregnant are not eligible; women of childbearing potential require a negative pregnancy test prior to enrollment * Patient has diarrhea at the time of enrollment which is Clostridium difficile toxin positive * Patient is receiving antibiotic therapy for an active bacterial infection * Patient is allergic to all third or fourth generation cephalosporins, carbapenems, and all aminoglycosides, which are used to empirically treat LBP bacteremia

Design outcomes

Primary

MeasureTime frameDescription
Proportion of Participants With Stage 1-4 Gastrointestinal (GI) Acute Graft Versus Host Disease (aGVHD)Up to 120 days post stem cell infusionThe proportion of eligible patients having stage 1-4 GI aGvHD occur from Day 0 through Day 120 will be compared between the two arms.

Other

MeasureTime frameDescription
Incidence of Blood Stream InfectionUp to 120 days post stem cell infusionThe risk of mucosal barrier blood stream infections will be compared between two groups.
Incidence of Clostridium Difficile (C. Diff)-Associated DiarrheaUp to 120 days post stem cell infusionProportion of C. diff-associated diarrhea during the study period will be compared between arms.
Serum Levels of CitrullineUp to 120 days post stem cell infusionThe change in citrulline levels from baseline to each of the time points (days 7, 14, 28, 56, and 120 post-infusion) will be summarized and described by arm.
Bacterial Genes and Pathways, and Bacterial Metabolites (Blood/Stool Measures of Intestinal Flora - Function and Phylogenetic Composition)Up to 120 days post stem cell infusionLBP introduction on the intestinal flora via LBP administration will be compared with bacterial genes and pathways, and bacterial metabolites via correlation analyses. Also, dDescriptive analysis will be used to examine the association between the graft versus host disease outcomes (GI aGvHD and overall GvHD) and bacterial genes, pathways, and metabolites.
Incidence of Grade II-IV Overall Graft Versus Host DiseaseUp to 120 days post stem cell infusionA similar analysis approach will be used as described for the primary outcome measure but using the dichotomous cumulative incidence of grade II-IV acute graft versus host disease as the endpoint measure.
Levels of Pro-inflammatory CytokinesUp to 120 days post stem cell infusionThe effects of Lactobacillus plantarum on pro-inflammatory (LBP) cytokines in allogeneic hematopoietic cell transplantation recipients will be examined by comparing levels across arms.
Hospital DaysUp to 120 days post stem cell infusionTotal hospital days over the study period is calculated as the duration between the date of admission for conditional therapy and the date of discharge (or the study end date). Hospital days will be compared between arms.
Incidence of Lactobacillus Plantarum BacteremiaUp to 120 days post stem cell infusionPatients who have at least one incidence (positive) of lactobacillus plantarum during any reporting period is considered evaluable for this aim. The proportion of patients experiencing lactobacillus plantarum bacteremia during the study period will be compared between arms.
Blood/Stool Measures of Intestinal Flora Assessed Using SequencingUp to 120 days post stem cell infusionThe association between Lactobacillus plantarum administration and bacterial genes and pathways, and bacterial metabolites will be evaluated.

Countries

Canada, United States

Participant flow

Recruitment details

Enrollment through day 120 post-stem cell infusion

Participants by arm

ArmCount
Arm I (Lactobacillus Plantarum, alloHCT)
Patients receive Lactobacillus plantarum strains 299 and 299v PO or through NJ, NG or G tube QD on day 1 of transplant conditioning regimen to 56 days post alloHCT. Patients undergo alloHCT at day 0.
85
Arm II (Placebo, alloHCT)
Patients receive placebo PO or through NJ, NG or G tube QD on day 1 of transplant conditioning regimen to 56 days post alloHCT. Patients undergo alloHCT at day 0.
88
Total173

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyDeath44
Overall StudyIneligible11
Overall StudyWithdrawal by Subject63

Baseline characteristics

CharacteristicArm I (Lactobacillus Plantarum, alloHCT)Arm II (Placebo, alloHCT)Total
Age, Categorical
<=18 years
74 Participants76 Participants150 Participants
Age, Categorical
>=65 years
0 Participants0 Participants0 Participants
Age, Categorical
Between 18 and 65 years
11 Participants12 Participants23 Participants
Age, Continuous10.7 years
STANDARD_DEVIATION 6
12.1 years
STANDARD_DEVIATION 5.6
11.4 years
STANDARD_DEVIATION 5.8
Ethnicity (NIH/OMB)
Hispanic or Latino
16 Participants21 Participants37 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
64 Participants61 Participants125 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
5 Participants6 Participants11 Participants
Race (NIH/OMB)
American Indian or Alaska Native
2 Participants0 Participants2 Participants
Race (NIH/OMB)
Asian
5 Participants3 Participants8 Participants
Race (NIH/OMB)
Black or African American
14 Participants13 Participants27 Participants
Race (NIH/OMB)
More than one race
0 Participants1 Participants1 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
15 Participants11 Participants26 Participants
Race (NIH/OMB)
White
49 Participants60 Participants109 Participants
Region of Enrollment
Canada
7 participants5 participants12 participants
Region of Enrollment
United States
78 participants83 participants161 participants
Sex: Female, Male
Female
29 Participants35 Participants64 Participants
Sex: Female, Male
Male
56 Participants53 Participants109 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
4 / 854 / 88
other
Total, other adverse events
9 / 849 / 87
serious
Total, serious adverse events
5 / 848 / 87

Outcome results

Primary

Proportion of Participants With Stage 1-4 Gastrointestinal (GI) Acute Graft Versus Host Disease (aGVHD)

The proportion of eligible patients having stage 1-4 GI aGvHD occur from Day 0 through Day 120 will be compared between the two arms.

Time frame: Up to 120 days post stem cell infusion

Population: 2 patients were excluded because they were not eligible (1 patient from Group 1 and 1 patient from Group 2). 2 patients were excluded because they did not initiate treatment (1 patient from Group 1 and 1 patient from Group 2). 10 patients were excluded because they never received a stem cell infusion within 6 months of enrollment (5 patients from Group 1 and 5 patients from Group 2).

ArmMeasureValue (NUMBER)
Arm I (Lactobacillus Plantarum, alloHCT)Proportion of Participants With Stage 1-4 Gastrointestinal (GI) Acute Graft Versus Host Disease (aGVHD)0.15 Proportion of patients
Arm II (Placebo, alloHCT)Proportion of Participants With Stage 1-4 Gastrointestinal (GI) Acute Graft Versus Host Disease (aGVHD)0.15 Proportion of patients
Other Pre-specified

Bacterial Genes and Pathways, and Bacterial Metabolites (Blood/Stool Measures of Intestinal Flora - Function and Phylogenetic Composition)

LBP introduction on the intestinal flora via LBP administration will be compared with bacterial genes and pathways, and bacterial metabolites via correlation analyses. Also, dDescriptive analysis will be used to examine the association between the graft versus host disease outcomes (GI aGvHD and overall GvHD) and bacterial genes, pathways, and metabolites.

Time frame: Up to 120 days post stem cell infusion

Other Pre-specified

Blood/Stool Measures of Intestinal Flora Assessed Using Sequencing

The association between Lactobacillus plantarum administration and bacterial genes and pathways, and bacterial metabolites will be evaluated.

Time frame: Up to 120 days post stem cell infusion

Other Pre-specified

Hospital Days

Total hospital days over the study period is calculated as the duration between the date of admission for conditional therapy and the date of discharge (or the study end date). Hospital days will be compared between arms.

Time frame: Up to 120 days post stem cell infusion

Other Pre-specified

Incidence of Blood Stream Infection

The risk of mucosal barrier blood stream infections will be compared between two groups.

Time frame: Up to 120 days post stem cell infusion

Other Pre-specified

Incidence of Clostridium Difficile (C. Diff)-Associated Diarrhea

Proportion of C. diff-associated diarrhea during the study period will be compared between arms.

Time frame: Up to 120 days post stem cell infusion

Other Pre-specified

Incidence of Grade II-IV Overall Graft Versus Host Disease

A similar analysis approach will be used as described for the primary outcome measure but using the dichotomous cumulative incidence of grade II-IV acute graft versus host disease as the endpoint measure.

Time frame: Up to 120 days post stem cell infusion

Other Pre-specified

Incidence of Lactobacillus Plantarum Bacteremia

Patients who have at least one incidence (positive) of lactobacillus plantarum during any reporting period is considered evaluable for this aim. The proportion of patients experiencing lactobacillus plantarum bacteremia during the study period will be compared between arms.

Time frame: Up to 120 days post stem cell infusion

Other Pre-specified

Levels of Pro-inflammatory Cytokines

The effects of Lactobacillus plantarum on pro-inflammatory (LBP) cytokines in allogeneic hematopoietic cell transplantation recipients will be examined by comparing levels across arms.

Time frame: Up to 120 days post stem cell infusion

Other Pre-specified

Serum Levels of Citrulline

The change in citrulline levels from baseline to each of the time points (days 7, 14, 28, 56, and 120 post-infusion) will be summarized and described by arm.

Time frame: Up to 120 days post stem cell infusion

Source: ClinicalTrials.gov · Data processed: Feb 21, 2026