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Test Code GAL2 Probability of Hepatocellular Carcinoma, Serum


Specimen Required


Only orderable as part of a profile. For more information see HCCGS / Hepatocellular Carcinoma Risk Panel with GALAD Score, Serum.

 

Collection Container/Tube:

Preferred: Serum gel

Acceptable:  Red top

Submission Container/Tube: Plastic vial

Specimen Volume: 0.5 mL

Collection Instructions: Centrifuge and aliquot serum into a plastic vial.


Useful For

Calculation of the risk for patients with chronic liver disease to develop hepatocellular carcinoma

Method Name

Only orderable as part of a profile. For more information see HCCGS / Hepatocellular Carcinoma Risk Panel with GALAD Score, Serum

 

Calculation

Reporting Name

Probability of HCC

Specimen Type

Serum

Specimen Minimum Volume

0.25 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Serum Frozen (preferred) 90 days
  Refrigerated  5 days

Reference Values

Only orderable as part of a profile. For more information see HCCGS / Hepatocellular Carcinoma Risk Panel with GALAD Score, Serum

 

Not applicable

Interpretation

Higher GALAD (gender, age, AFP-L3, AFP, des-gamma-carboxy prothrombin) model scores correlate with increased risk of hepatocellular carcinoma (HCC). The area under the curve (AUC) of a receiver operating characteristic curve of the GALAD score was 0.95 for all HCC detection and 0.92 for the detection of early-stage HCC. Additionally, the AUC of the GALAD score (0.95) was higher than that of ultrasound alone for all HCC detection (AUC of 0.82, P <0.01).

 

The sensitivity and specificity performance characteristics of the GALAD score for HCC will be influenced by the selected GALAD score cut-off. For example, at an optimal AUC cutoff of 0.76, the GALAD score had 91% sensitivity and 85% specificity for HCC detection. At a more specific GALAD score cutoff of 0.88, the observed sensitivity was 80% for HCC detection with an observed specificity of 97%.

 

The GALAD model was developed and validated in patient cohorts with a prevalence of HCC ranging from 35% to 49%. The performance of the model may be altered in populations with different HCC prevalence. In addition, the clinical performance of the GALAD score varies by etiology of HCC and, therefore, may be different in different regions of the world.

Clinical Reference

1. Johnson P, Pirrie S, Cox T, et al. The detection of hepatocellular carcinoma using a prospectively developed and validated model based on serological biomarkers. Cancer Epidemiol Biomarkers Prev. 2014;23(1):144-153

2. Berhane S, Toyota H, Tada T, et al. Role of the GALAD and BALAD-2 serologic models in diagnosis of hepatocellular carcinoma and prediction of survival in patients. Clin Gastroenterol Hepatic. 2016;14(6):875-886

3. Yang JD, Addissie BD, Mara KC, et al. GALAD score for hepatocellular carcinoma detection in comparison with liver ultrasound and proposal of GALADUS score. Cancer Epidemiol Biomarkers Prev. 2019;28(3):531-538 doi:10.1158/1055-9965

4. Leerapun A, Suravarapu S, Bida JP, et al. The utility of serum AFP-L3 in the diagnosis of hepatocellular carcinoma: Evaluation in a U.S. referral population. Clin Gastroenterol Hepatol. 2007;5(3):394-402

5. Durazo FA, Blatt LM, Corey WG, et al. Des-gamma-carboxyprothrombin, alpha-fetoprotein and AFP-L3 in patients with chronic hepatitis, cirrhosis and hepatocellular carcinoma. J Gastroenterol Hepatol. 2008;23:1541-1548

6. Chaiteerakij R, Addissie BD, Roberts LR. Update on biomarkers of hepatocellular carcinoma. Clin Gastroenterol Hepatol. 2015;13(2):237-245 doi:10.1016/j.cgh.2013.10.038

Day(s) Performed

Monday, Wednesday, Friday

Report Available

Same day/1 to 4 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

Not Applicable

LOINC Code Information

Test ID Test Order Name Order LOINC Value
GAL2 Probability of HCC 96709-1

 

Result ID Test Result Name Result LOINC Value
GAL2 Probability of HCC 96709-1