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TerminatedNCT00948194Updated May 28, 2021Results posted

Effect of Nitric Oxide (NO) on Ischemic/Reperfusion Injury During Extended Donor Criteria (EDC) Liver Transplantation

An interventional study of Nitric Oxide in Liver Transplantation, Ischemia/Reperfusion Injury and Oxidative Injury, sponsored by University of Colorado, Denver. Terminated at 1 site in United States. Open to participants aged 18 Years to 69 Years. Per ClinicalTrials.gov, last updated 2021-05-28.

Sponsored by University of Colorado, Denver · Not applicable, Interventional, and Treatment

Why this study was terminated
This study was terminated when the P.I. left the university.
Phase
Not applicable
Study type
Interventional
Enrollment
13
Allocation
Randomized
Ages
18 Years to 69 Years
Sex
All
01

Study summary

In this study, the researchers propose to investigate the efficacy of inhaled nitric oxide to prevent ischemia-reperfusion (I/R) hepatocyte injury in patients who receive extended donor criteria(EDC)liver grafts based on changes in proteomic and metabolomic markers following revascularization of the donor graft.

In reviewing the literature, no uniform extended criteria donor classification exists. The characteristics most associated with liver graft failure appear to be cold ischemia time greater than 10 hours, warm ischemia time greater than 40 minutes, donor age > 55 years of age, donor hospitalization > 5 days, a donation after cardiac death (DCD) graft, and a split graft. The researchers will exclude warm ischemia time as this is impossible to predict prior to the transplantation. Any donor meeting at least one of the other criteria will be classified as an EDC donor.

Hypothesis 1: Inhaled nitric oxide will improve overall outcome of liver recipients after EDC liver transplantation

  • Suppression of oxidative injury will improve graft function postoperatively as measured by International Normalized Ratio (INR) bilirubin, transaminases, and duration of hospital stay.

Hypothesis 2: The mechanisms of therapeutic efficacy of inhaled nitric oxide is based on reduction in post-reperfusion oxidative injury as readily measured by the detectable changes in the protein and metabolic profiles in plasma of patients treated with inhaled-NO

  • Nuclear Magnetic Resonance (NMR)-based metabolic markers (xanthine end-products, lactate, and hepatic osmolytes) that are consistent with acute liver injury will be decreased in NO-treated recipients.
  • Protein markers of reperfusion injury (argininosuccinate synthase (ASS) and estrogen sulfotransferase (EST-1) will be greater in the plasma of patients who are not treated with inhaled-NO
  • Reduced oxidative injury will be reflected by a decrease in the number of mitochondrial peroxiredoxins isoforms and the number that are oxidized in NO-treated liver recipients.
02

Conditions studied

  • Liver Transplantation
  • Ischemia/Reperfusion Injury
  • Oxidative Injury

Keywords

  • Extended Donor Criteria
03

In context

Reperfusion Injury

271 studies on the registry are indexed under Reperfusion Injury; 42 are open to participants now.

This study's enrollment of 13 is below the median of 61 across 215 interventional studies indexed under Reperfusion Injury.

Browse Reperfusion Injury studies →

Lead sponsor

University of Colorado, Denver is the lead sponsor of 1,499 studies on the registry; 315 are open to participants now.

Of its 139 completed or terminated interventional studies of FDA-regulated products, 89 (64%) have results posted.

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

04

Who can participate

Ages eligible
18 Years to 69 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Age 18 - 69 years of age
  • moderate to severe liver disease (MELD score 22 to 30)
  • is receiving a extended donor criteria liver graft

Exclusion criteria

Exclusion Criteria:

  • undergoing multi-organ transplant
  • 70 years or older
  • diagnosed with hepatocarcinoma
  • diagnosed with either hepatopulmonary syndrome or pulmonary hypertension
  • pregnant
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
13 participants (actual)

Study arms

  • No intervention
    No nitric oxide

    This arm will not receive nitric oxide, but will receive other standard inhaled anesthetics

  • Experimental
    Nitric Oxide

    Will receive Nitric oxide and other standard inhaled anesthetics

    Drug: Nitric Oxide

Interventions

  • DrugNitric Oxide

    Inhalation - 40 ppm, at the initiation of anesthesia to the end of surgery

    Also known as: INOmax

06

What researchers measure

Primary outcomes

  1. To Determine if Inhaled Nitric Oxide Has Beneficial Effects on Overall Outcome After Extended Criteria Donor (EDC) Liver Transplantation

    Time frame: 3 years

Secondary outcomes

  1. To Construct a Plasma Metabolic/Protein Profile of I/R Injury in Transplanted Livers

    Time frame: 3 years

  2. To Examine the Effects of Nitric Oxide on Protein Synthesis and Metabolism Following Extended Criteria Donor Liver Transplantation

    Time frame: 3 years

07

Results

Posted May 28, 2021

Participant flow

Participant flow — Overall Study
MilestoneNo Nitric OxideNitric Oxide
Started67
Completed57
Not completed10
Withdrew: Blood drawn using incorrect test tube; sample invalid10

Outcome measures

PrimaryTo Determine if Inhaled Nitric Oxide Has Beneficial Effects on Overall Outcome After Extended Criteria Donor (EDC) Liver Transplantation
Time frame:
3 years

No measurements were reported for this outcome.

SecondaryTo Construct a Plasma Metabolic/Protein Profile of I/R Injury in Transplanted Livers
Time frame:
3 years

No measurements were reported for this outcome.

SecondaryTo Examine the Effects of Nitric Oxide on Protein Synthesis and Metabolism Following Extended Criteria Donor Liver Transplantation
Time frame:
3 years

No measurements were reported for this outcome.

Adverse events

Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
No Nitric Oxide—0/5 (0%)0/5 (0%)
Nitric Oxide—0/7 (0%)0/7 (0%)

Baseline characteristics

Baseline characteristics data was not collected one participant whose sample was invalid.

Age, Categorical
Age, Categorical(Participants)No Nitric OxideNitric OxideTotal
<=18 years000
Between 18 and 65 years4711
>=65 years101
Sex: Female, Male
Sex: Female, Male(Participants)No Nitric OxideNitric OxideTotal
Female123
Male459
Diagnosis
Diagnosis(participants)No Nitric OxideNitric OxideTotal
Cirrhosis538
Hepatitis C448
HCC246
Hepatoma145
Primary Sclerosing Cholangitis (PSC)011
Fatty Liver (NASH)101
Metabolic Disease (METDIS) - Alpha-1-Antitrypsin Deficiency (A-1-A)011
Bone mets011
Model for End-Stage Liver Disease Score
Model for End-Stage Liver Disease Score(units on a scale)No Nitric OxideNitric OxideTotal
Mean26.2 ± 5.4227.14 ± 3.6426.75 ± 4.5
BMI
BMI(kg/m^2)No Nitric OxideNitric OxideTotal
Mean26.59 ± 5.0127.1 ± 5.8326.89 ± 5.51
08

Study locations

1 site
  • University of Colorado Hospital
    Aurora, Colorado 80045, United States
09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on May 28, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT00948194
Lead sponsor
University of Colorado, Denver
Responsible party
Sponsor
First posted
Jul 29, 2009
Start date
Oct 2009
Primary completion
Dec 2015
Completion
Dec 2015
Results posted
May 28, 2021
Last update
May 28, 2021

Study contacts

Matthew J. Fiegel, M.D.
principal investigator · University of Colorado, Denver

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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