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OpenTrials
Active, Not Recruiting

NCT Number: NCT04793360

Molecular Assessment and Profiling of Liver Transplant Recipients

The objective of this protocol is to conduct longitudinal and prospective studies of liver transplant recipients, using a multimodality approach, akin to that used in kidney transplantation. The primary aim will compare the clinical outcomes of LiverCare post-transplant surveillance in liver transplant with standard of care consisting of liver function tests, DSA measurements, drug level monitoring, and 'for cause' biopsy. The protocol will assess the correlation between clinical events (e.g. rejection, recurrent disease, biliary obstruction), dd-cfDNA levels, gene expression profiling, ability to assess microchimerism, develop predictive analytics, infectious disease diagnoses and finally examine graft histology.

Active, Not Recruiting

This study is active but is not currently recruiting participants.

Key information

Conditions

Liver Transplantation Biomarkers

Age range

12 year and older

Sex eligibility

All sexes

Study type

Observational

Primary location

Keck Medical Center of USC, Los Angeles, California, United States

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Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Liver transplant recipients <60 days post-transplant (de-novo or re-transplant).
  • Participant is willing and able to give informed consent for participation in the trial.
  • Male or Female, aged 12 years or above (Gillick Competent).
  • In the Investigator's opinion, is able and willing to comply with all trial requirements.

Exclusion criteria

  • Female participant who is pregnant, lactating or planning pregnancy during the course of the trial.
  • Has evidence of significant post-transplant impairment of hepatic function which is unlikely to improve (determined by the PI).
  • Scheduled elective surgery or other procedures requiring general anaesthesia during the trial.
  • Participant with life expectancy of less than 6 months or is inappropriate for diagnostic monitoring through regular blood sampling.
  • Any other significant disease or disorder which, in the opinion of the Investigator, may either put the participants at risk because of participation in the trial, or may influence the result of the trial, or the participant's ability to participate in the trial.
  • Participants who have participated in another research trial involving an investigational product in the past 12 weeks*.
  • Multi-organ transplant recipients or dual organ transplant recipients.
  • Patients with significant needle phobia.

Treatment and study plan

LiverCare

Device

The LiverCare kits contains Streck tubes and PAX gene tubes, which will be collected at the surveillance schedule outlined above, but also prior to any liver biopsy or DSA measurement. For patients who have a histological diagnosis of allograft rejection who are undergoing treatment, serial monitoring of LiverCare will be performed following the schedule above. All research blood tests will be timed with standard clinical testing to avoid any additional needle sticks.

Primary outcomes

  1. To correlate the results of LiverCare with clinically significant events impacting post-transplant clinical outcomes, histological findings, and the development of de novo Donor Specific Antibody (DSA)

    Time frame: 2 years of accrual and 3 years follow up

    LiverCare will be measured 7 times in year 1 and quarterly each year. A total of 15 surveillance points per subject in addition to for-cause testing based on clinical changes. Liver care will be collected at the time of all histologic analyses whether 'for cause' or 'surveillance'

Sponsors and collaborators

Lead sponsor

CareDx

Industry

Registry information

Acronym: MAPLE

Important dates

Study start
2021
Primary completion
2027
Study completion
2028
First posted
Mar 11, 2021
Registry last updated
Feb 23, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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