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CompletedNCT05061992Updated Nov 21, 2023Results posted

A Trial to Improve Quality of Life in People With Cirrhosis

A Phase 2/3 interventional study of Lactulose in Cirrhosis, sponsored by University of Michigan. Completed at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2023-11-21.

Sponsored by University of Michigan · Phase 2/3, Interventional, and Treatment

Phase
Phase 2/3
Study type
Interventional
Enrollment
56
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

This trial is being completed to evaluate whether a crystallized form of lactulose (Kristalose) will improve quality of life, sleep and cognitive function in patients with cirrhosis that have not been diagnosed with Hepatic Encephalopathy (HE), but report reduced quality of life.

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Conditions studied

  • Cirrhosis

Keywords

  • Hepatic Encephalopathy
  • Liver Disease
  • Cirrhosis and portal hypertension
03

In context

Liver Cirrhosis

1,642 studies on the registry are indexed under Liver Cirrhosis; 358 are open to participants now.

This study's enrollment of 56 is below the median of 72 across 995 interventional studies indexed under Liver Cirrhosis.

Browse Liver Cirrhosis studies →

Lead sponsor

University of Michigan is the lead sponsor of 1,475 studies on the registry; 196 are open to participants now.

Of its 162 completed or terminated interventional studies of FDA-regulated products, 128 (79%) have results posted.

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

04

Who can participate

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

Inclusion criteria

  • Diagnosis of cirrhosis - must meet one of the following criteria:

    1. liver biopsy, OR
    2. history of cirrhosis complication: ascites, variceal bleeding, hepatic encephalopathy, OR
    3. 2 of the following 4 criteria:

      1. Ultrasound, Computed tomography (CT) or Magnetic resonance imaging (MRI) findings of cirrhosis (cirrhotic appearing liver, splenomegaly, varices, ascites)
      2. Fibroscan liver stiffness score >13 Kilopascal (kPa)
      3. Laboratory testing: aspartate aminotransferase (AST)/platelet ratio index (APRI) >2.0
      4. CT, MRI or Esophagogastroduodenoscopy (EGD) showing presence of esophageal varices

Exclusion criteria

Exclusion Criteria:

  • Non-English speaking
  • Pregnancy (self-reported)
  • Unable or unwilling to provide consent
  • History of liver transplant
  • Disorientation at the time of enrollment, Dementia, or Treated Memory Disorder
  • History of prior lactulose use or HE within 6 months
  • Metastatic solid malignancy or blood malignancy
  • Hemoglobin A1C > 12 (within past year)
05

Study design

Phase
Phase 2 / Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
56 participants (actual)

Study arms

  • Experimental
    Lactulose

    Drug: Lactulose

  • No intervention
    No treatment

    Subjects will complete baseline and outcome assessments at 28 days and no intervention or placebo will be prescribed.

Interventions

  • DrugLactulose

    Participants will take 20 grams (dissolved in 4ounces of water/beverage) doses of lactulose twice daily (upon awakening and then 4 hours later) for 28 days. In addition, outcome measurements will be completed at baseline and day 28.

    Also known as: Kristalose

06

What researchers measure

Primary outcomes

  1. Short Form-8 Health Survey (SF-8) at 28 Days

    The SF-8 is an abbreviated version of an original 36-item health survey (SF-36). It is a generic, multipurpose, quality of life instrument, containing psychometrically based physical and mental health summary measures. The eight domains are general health, physical functioning, role physical, bodily pain, vitality, social functioning, mental health, and role emotional. Scores from the domains are combined and range from 0 (lowest quality of living) to 100 (highest quality of living).

    Time frame: 28 days

Secondary outcomes

  1. Animal Naming Test (ANT)

    Number of unique animals named within 1 minute by the participant. Values below show the change from baseline and the results from the test taken 28 days later.

    Time frame: 28 days

  2. Change in Overall Sleep Quality

    Overall sleep quality was measured on a 5-point Likert scale, with a range of 1 (very bad sleep quality) to 5 (very good sleep quality).

    Time frame: Change between baseline (day 0) and 28 days

  3. Regular Daily Activity Impairment

    Single-question survey given to participants at baseline and again 28 days later. Participants ranked their daily activity impairment on a Likert scale of 0 (no impairment) to 10 (complete impairment)

    Time frame: 28 days

  4. Participants Who Fell

    Yes or no question on whether participant had experienced at least 1 fall in the past 28 days.

    Time frame: 28 days

  5. Daily Bowel Movements

    Results show the percentage of days in a 28-day span in which participants experienced more than 5 daily bowel movements. All participants analyzed in each arm were included in calculating the results using the following formula: (days with \>5 bowel movements) / (patient-days in study) The results are presented as a single number because they are a point estimate of a population level proportion

    Time frame: 28 days

07

Results

Posted Nov 21, 2023

Participant flow

Participant flow — Overall Study
MilestoneLactuloseNo Treatment
Started2828
Completed2527
Not completed31
Withdrew: Excess bowel movements10
Withdrew: Complications of medical care10
Withdrew: Diarrhea prior to starting therapy10
Withdrew: Withdrawal by subject01

Outcome measures

PrimaryShort Form-8 Health Survey (SF-8) at 28 Days

The SF-8 is an abbreviated version of an original 36-item health survey (SF-36). It is a generic, multipurpose, quality of life instrument, containing psychometrically based physical and mental health summary measures. The eight domains are general health, physical functioning, role physical, bodily pain, vitality, social functioning, mental health, and role emotional. Scores from the domains are combined and range from 0 (lowest quality of living) to 100 (highest quality of living).

Time frame:
28 days
Reported as:
Mean · score on a scale
Short Form-8 Health Survey (SF-8) at 28 Days
score on a scaleLactuloseNo Treatment
Change in SF-8 from Baseline8.1 (3.7 to 12.4)6.55 (2.3 to 10.8)
End of Trial SF-870.9 (63.9 to 77.9)63.84 (57.1 to 70.6)
Statistical analysis
  • Lactulose vs No Treatment · ANCOVA · p = 0.6
  • Lactulose vs No Treatment · ANCOVA · p = 0.2
SecondaryAnimal Naming Test (ANT)

Number of unique animals named within 1 minute by the participant. Values below show the change from baseline and the results from the test taken 28 days later.

Time frame:
28 days
Reported as:
Mean · Count of Animals Named
Animal Naming Test (ANT)
Count of Animals NamedLactuloseNo Treatment
Change in ANT3.7 (2.1 to 5.4)-0.15 (-1.7 to 1.4)
End of trial ANT21.2 (18.9 to 23.6)18.52 (16.3 to 20.8)
Statistical analysis
  • Lactulose vs No Treatment · ANCOVA · p = 0.001
  • Lactulose vs No Treatment · t-test, 2 sided · p = 0.09
SecondaryChange in Overall Sleep Quality

Overall sleep quality was measured on a 5-point Likert scale, with a range of 1 (very bad sleep quality) to 5 (very good sleep quality).

Time frame:
Change between baseline (day 0) and 28 days
Reported as:
Median · score on a scale
Change in Overall Sleep Quality
score on a scaleLactuloseNo Treatment
Change in Overall Sleep Quality0.4 (0.1 to 0.7)0.0 (-0.3 to 0.3)
Statistical analysis
  • Lactulose vs No Treatment · ANCOVA · p = 0.05
SecondaryRegular Daily Activity Impairment

Single-question survey given to participants at baseline and again 28 days later. Participants ranked their daily activity impairment on a Likert scale of 0 (no impairment) to 10 (complete impairment)

Time frame:
28 days
Reported as:
Mean · score on a scale
Regular Daily Activity Impairment
score on a scaleLactuloseNo Treatment
Regular Daily Activity Impairment3.0 (1.9 to 4.0)4.8 (3.8 to 5.8)
Statistical analysis
  • Lactulose vs No Treatment · ANCOVA · p = 0.02
SecondaryParticipants Who Fell

Yes or no question on whether participant had experienced at least 1 fall in the past 28 days.

Time frame:
28 days
Reported as:
Count of participants · Participants
Participants Who Fell
ParticipantsLactuloseNo Treatment
Participants Who Fell13
Statistical analysis
  • Lactulose vs No Treatment · Fisher Exact · p = 0.6
SecondaryDaily Bowel Movements

Results show the percentage of days in a 28-day span in which participants experienced more than 5 daily bowel movements. All participants analyzed in each arm were included in calculating the results using the following formula: (days with \>5 bowel movements) / (patient-days in study) The results are presented as a single number because they are a point estimate of a population level proportion

Time frame:
28 days
Reported as:
Number · % of participant-days with >5 bowels
Daily Bowel Movements
% of participant-days with >5 bowelsLactuloseNo Treatment
Daily Bowel Movements52
Statistical analysis
  • Lactulose vs No Treatment · t-test, 2 sided · p = 0.2

Adverse events

Collected over 28 days. Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Lactulose0/28 (0%)1/28 (3.6%)1/28 (3.6%)
No Treatment0/28 (0%)1/28 (3.6%)3/28 (10.7%)
Most frequent serious events
Most frequent serious events
EventLactuloseNo Treatment
Complications from Liver DiseaseHepatobiliary disorders1/281/28
Most frequent other events
Most frequent other events
EventLactuloseNo Treatment
FallMusculoskeletal and connective tissue disorders1/283/28

Baseline characteristics

Age, Continuous
Age, Continuous(years)LactuloseNo TreatmentTotal
Mean58.1 ± 11.961.8 ± 11.360.0 ± 11.5
Sex: Female, Male
Sex: Female, Male(Participants)LactuloseNo TreatmentTotal
Female151530
Male131326
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)LactuloseNo TreatmentTotal
Hispanic or Latino000
Not Hispanic or Latino282856
Unknown or Not Reported000
Race (NIH/OMB)
Race (NIH/OMB)(Participants)LactuloseNo TreatmentTotal
American Indian or Alaska Native000
Asian011
Native Hawaiian or Other Pacific Islander000
Black or African American112
White272653
More than one race000
Unknown or Not Reported000
Region of Enrollment
Region of Enrollment(Participants)LactuloseNo TreatmentTotal
United States282856
Short Form-8 Health Survey (SF-8)
Short Form-8 Health Survey (SF-8)(score on a scale)LactuloseNo TreatmentTotal
Mean57.2 ± 18.361.1 ± 17.059.2 ± 17.7
Animal Naming Test
Animal Naming Test(Count of Animals Named)LactuloseNo TreatmentTotal
Mean17.9 ± 5.318.3 ± 6.518.1 ± 5.8
Sleep Quality
Sleep Quality(Score on a Scale)LactuloseNo TreatmentTotal
Mean2.5 ± 0.82.5 ± 0.82.5 ± 0.8

2 further baseline measures are reported on the registry.

08

Study locations

1 site
  • University of Michigan
    Ann Arbor, Michigan 48109, United States
09

References and documents

Study documents

  • Protocol and statistical analysis plan · Dec 1, 2021

Documents are hosted by the registry — open the source record to download them.

Individual participant data

Plan to share: No

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Nov 21, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT05061992
Lead sponsor
University of Michigan
Responsible party
Elliot B. Tapper (Assistant Professor of Internal Medicine, University of Michigan) — Principal investigator
First posted
Sep 30, 2021
Start date
Nov 10, 2021
Primary completion
Nov 1, 2022
Completion
Nov 1, 2022
Results posted
Nov 21, 2023
Last update
Nov 21, 2023

Study contacts

Elliot Tapper, MD
principal investigator · University of Michigan

Oversight

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

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This study is completed, as verified in Nov 2023. You cannot join it, but the record below documents what was studied.

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