Predicting Survival After Surgical Resection for the Entire Spectrum of Anatomically Resectable HCC
1 other identifier
observational
1,043
1 country
2
Brief Summary
Clinical outcomes after surgical resection in HCC is a continuum and is clearly related to tumor burden but needs better definition. The researchers describe the use of the "metro ticket" approach to analyze surgical outcomes over the whole spectrum of anatomically resectable HCC to define overall survival including intermediate stage tumors (BCLC B). The analysis the researchers provide in this study enables the clinician to select the optimal surgical resection candidate based on robust long term survival data. In addition, study compares outcome for open surgery vs laparoscopic surgery, survival outcome for viral and non-viral HCC using Albumin-Bilirubin (ALBI) for more comprehensive study result. On top of that, non-HBV, non-HCV (NBNC) hepatocellular carcinoma (HCC) is generally associated with poorer tumor characteristics. However, it remains unclear whether this leads to worse post-resection survival compared to viral-related HCC. This study evaluates the prognostic impact of viral status and liver function on post-resection survival outcomes between NBNC and viral HCC patients. This retrospective study also aims to determine if HCC of viral and non-viral etiologies have different clinical outcomes after surgical resection when tumor burden and liver function are considered.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for all trials
Started Jul 2017
Typical duration for all trials
2 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
Study Start
First participant enrolled
July 17, 2017
CompletedPrimary Completion
Last participant's last visit for primary outcome
June 30, 2020
CompletedStudy Completion
Last participant's last visit for all outcomes
June 30, 2020
CompletedFirst Submitted
Initial submission to the registry
February 26, 2024
CompletedFirst Posted
Study publicly available on registry
March 6, 2024
CompletedNovember 18, 2025
November 1, 2025
3 years
February 26, 2024
November 14, 2025
Conditions
Keywords
Outcome Measures
Primary Outcomes (6)
5-year mortality.
Time between the respective surgery to the time of death. Bivariate contour plots of 5-year survival probability as a function of X = AFP concentration (ng/mL) and Y = tumor burden index (size of largest nodule + 2\*number of nodules) (TBI) were obtained as smoothed contours originating from an empirically-derived bivariate 5-year survival distribution S(X,Y)=1- F(x ≤X,y ≤Y). The function F(x ≤X,y ≤Y) is the empirical, bivariate cumulative distribution of 5-year mortality as a function of X and Y defined over the domain (0\<X≤5000,1≤Y≤15) in our patient cohort. All patients in our study cohort were followed up for at least 5 years following respective surgery which allowed estimation of actual all-cause 5-year mortality.
At least 5 years.
Concordance of pre-operative radiological and post operative surgical specimen.
The metro ticket modeling was based on tumour size and number of nodules extracted at pre-operative radiological imaging and post surgical pathology assessment. Continuous variables are summarized as mean, standard deviation, 25th and 75th percentiles, median and minimum and maximum. Categorical variables are summarized as counts (N) and percentages (%).
Through study completion, an average of 3 years.
Agreement between TBI calculated from pre-operative imaging versus those obtained from post-surgical pathological assessment.
Bland-Altman analysis, which is based on a simple but effective graphical approach for evaluating bias and for calculating bounds on the expected magnitude of the individual differences arising between the two measurement methods, is used. A 45° line of identity with scatter plot was produced to display the correlation between the 2 measurements. Bias was evaluated by calculating (d) ̀… the mean difference of the measurements. Limits of agreement, calculated as (d) ̀… ±2sd , where sd is the standard deviation of the individual differences, defined bounds within which 95% of the measurement differences are expected to fall. The B-A plot defines the limits of agreements. B-A analysis is performed using TBI over a wide range, 0 ≤ TBI ≤ 30, and a restricted range focusing on small tumors, 0 \< TBI ≤ 6.
Through study completion, an average of 3 years.
Overall survival (OS) stratified on hepatitis status.
The time elapsed from the surgical resection to the point of death or the last follow-up, whichever occurred first.
Minimum 2 years follow up after Hepatocellular carcinoma resection.
Recurrence-free survival (RFS) stratified on hepatitis status.
The time between surgical resection of HCC and its recurrence confirmed via multi-phasic CT or MRI imaging, or last follow-up, whichever occurred first.
Minimum 2 years follow up after Hepatocellular carcinoma resection.
Prognostic stratification according to ALBI grade.
Overall survival (OS) and Recurrence-free survival (RFS) stratified according to ALBI grade.
Minimum 2 years follow up after Hepatocellular carcinoma resection.
Eligibility Criteria
Patients who underwent surgical resection (both open surgery and laparoscopic surgery) for HCC from 1st January 2000 to 30th June 2018 by the joint hepato-pancreato-biliary surgery service at the Singapore Healthcare Group of Hospitals (Singapore General Hospital and the National Cancer Centre Singapore).
You may qualify if:
- Unequivocal diagnosis of Hepatocellular Carcinoma (HCC) by histology
- Patients who underwent surgical resection for HCC
You may not qualify if:
- Patients who underwent liver resection for other malignancies ie cholangiocarcinoma
- Patients with HCC who did not undergo liver resection.
- Patients with HCC who underwent liver transplant.
Contact the study team to confirm eligibility.
Sponsors & Collaborators
- National Cancer Centre, Singaporelead
- Singapore General Hospitalcollaborator
Study Sites (2)
National Cancer Centre, Singapore
Singapore, 168583, Singapore
Singapore General Hospital
Singapore, 169608, Singapore
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PMID: 39248314DERIVED
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Pierce Chow, MD, PhD
National Cancer Centre, Singapore
Study Design
- Study Type
- observational
- Observational Model
- CASE ONLY
- Time Perspective
- RETROSPECTIVE
- Sponsor Type
- OTHER
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
February 26, 2024
First Posted
March 6, 2024
Study Start
July 17, 2017
Primary Completion
June 30, 2020
Study Completion
June 30, 2020
Last Updated
November 18, 2025
Record last verified: 2025-11
Data Sharing
- IPD Sharing
- Will not share