Diagnosis of esophageal varices by liver stiffness and serum biomarkers in virus-related compensated advanced chronic liver disease

Background

Individuals infected with hepatitis B (HBV), hepatitis C (HCV), and human immunodeficiency (HIV) viruses can experience compensated advanced chronic liver disease (cACLD) leading to esophageal varices (EV). In patients at low risk of esophageal varices needing treatment (EVNT), non-invasive criteria based on liver stiffness measurement (LSM) with platelets, or fibrosis biomarkers, may avoid unnecessary screening esophagogastroduodenoscopies (EGD). These approaches have not been compared among people infected with HIV, HBV, and HCV patients.

Methods

Patients with a diagnosis of cACLD (LSM ≥10 kPa) and EGD availability were included from two cohorts. Baveno VI and expanded Baveno VI criteria (based on LSM and platelets), fibrosis biomarkers Fibrosis-4 Index (FIB-4), AST-to-Platelets Ratio Index (APRI), AST-to-ALT ratio (AAR), and RESIST criteria (based on platelets and albumin) were applied to determine the proportion of spared EGD and of missed EVNT.

Results

Three hundred fifty three patients (30.6% with HIV, 25.3% monoinfected with HBV, and 44.1% with HCV) were included. The prevalence of EVNT was 8.2%. Both Baveno VI and expanded Baveno VI criteria performed well in patients with virus-related cACLD, by sparing 26.1% and 51.6% EGD, respectively, while missing <2% EVNT. The proportion of spared EGD were 48.2%, 58%, and 24.3% by FIB-4 (<2.78), APRI (<1.1), and AAR (<0.75), respectively, while missing <3% EVNT. RESIST criteria spared 47.8% EGD while missing 1.9% EVNT.

Conclusions

Non-invasive criteria based on LSM can spare unnecessary EGD in virus-related cACLD. Simple fibrosis biomarkers can ameliorate resource utilization for EVNT screening in low resource settings.

Validation of original, expanded Baveno VI, and stepwise & platelet-MELD criteria to rule out varices needing treatment in compensated cirrhosis from various etiologies

INTRODUCTION AND OBJECTIVES

The Baveno VI criteria to rule out varices needing treatment (VNT) was introduced in 2015. Soon after, the expanded Baveno VI and stepwise platelet-MELD criteria were proposed to be equal/more accurate in ruling out VNT; however, neither has been widely validated. We aimed to validate all 3 criteria in compensated cirrhosis from assorted causes.

MATERIALS AND METHODS

We conducted a cross-sectional study including all adult compensated cirrhotic patients who underwent endoscopic surveillance at our center from 2014 to 2018 and had transient elastography (TE), and laboratory data for criteria calculation within 6 months of endoscopies. Exclusion criteria were previous decompensation, unreliable/invalid TE results, and liver cancer. The diagnostic performances of all criteria were evaluated.

RESULTS

A total of 128 patients were included. The major cirrhosis etiologies were hepatitis C and B (37.5% and 32.8%, respectively). VNT was observed in 7.8%. All criteria yielded high negative predictive values (NPVs)>95%, missed VNT was observed in 2%, 2.7%, and 2.8% in the original, expanded Baveno VI, and platelet-MELD criteria, respectively. The expanded Baveno VI and the platelet-MELD criteria yielded significantly better specificities and could spare more endoscopies than the original Baveno VI criteria.

CONCLUSIONS

All 3 criteria showed satisfactorily high NPVs in ruling out VNT in compensated cirrhosis from various causes. The expanded Baveno VI and the platelet-MELD criteria could spare more endoscopies than the original Baveno VI criteria. From a public health standpoint, the platelet-MELD criteria might be useful in a resource-limited setting where TE is not widely available.

Screening varices in patients with HBV-related cirrhosis on antiviral therapy: Platelet alone or together with LSM

BACKGROUND & AIMS

Non-invasive assessment criteria to rule out high-risk varices (HRV) in compensated hepatitis B virus (HBV) cirrhosis on antiviral therapy remains unclear.

METHODS

HBV-related compensated cirrhotic patients who underwent screening endoscopy during antiviral therapy were enrolled and randomly divided into the derivation and validation sets. HRV were defined as medium to large varices or small varices with red signs. Univariate and multivariate logistic analysis were used to determine the parameters associated with HRV.

RESULTS

A total of 436 HBV-related compensated cirrhotic patients screened for varices were enrolled, the median duration of antiviral therapy was 4 years (IQR: 2.5-5.5 years). In the derivation set (N = 290, 17.2% with HRV), only platelet (PLT) count (OR = 0.972, 95% CI 0.961-0.984, P < .05) was independently associated with HRV, whereas liver stiffness measurement was not associated with the presence of HRV. With a PLT count cut-off value of 105 × 10⁹ /L, unnecessary endoscopies could be spared in 56.9% patients, with a 3.6%. risk of missing HRV. In the validation cohort (N = 146, 16.4% with HRV), the proportion of patients that could safely spare endoscopies (61.0%) identified by this PLT count cut-off value was higher than that obtained by using Baveno VI criteria (34.9%), with an acceptable risk of missing HRV (3.4%).

CONCLUSION

Compared with the 'Baveno VI criteria or beyond' criteria, PLT count higher than 105 × 10⁹ /L could safely spare more screening endoscopies without increasing the risk of missing HRV in patients with HBV-related compensated cirrhosis on antiviral therapy.

Usefulness of noninvasive methods including assessment of liver stiffness by 2-dimensional shear wave elastography for predicting esophageal varices

BACKGROUND

The aim of this study was to predict the presence of esophageal varices (EVs) by noninvasive tools combined with 2-dimensional shear wave elastography (2D-SWE), and to compare the diagnostic capabilities of 2D-SWE with those of transient elastography (TE).

METHODS

Between January 2015 and December 2017, 289 patients with compensated advanced chronic liver disease (cACLD) who underwent consecutive 2D-SWE and EGD were enrolled. Capabilities for predicting the presence of EVs of 2D-SWE and models combining 2D-SWE with other noninvasive tools (modified LS-spleen-diameter-to-platelet-ratio score [mLSPS], platelet-spleen ratio score) were compared. A subgroup analysis was performed on 177 patients who also underwent simultaneous TE.

RESULTS

The area under receiver operating characteristics (AUROCs) for detecting EVs for 2D-SWE alone vs. mLSPS, which included 2D-SWE, were 0.757 (95% confidence interval [CI], 0.701-0.810) and 0.813 (95% CI, 0.763-.857), respectively. The AUROCs for predicting varices needing treatment (VNT) for 2D-SWE and mLSPS were 0.712 (95% CI, 0.621-0.738) and 0.834 (95% CI, 0.785-0.875), respectively. For the 195 patients who underwent simultaneous TE and 2D-SWE, no differences in diagnostic performance were observed.

CONCLUSIONS

The diagnostic performance of 2D-SWE is similar to that of TE for predicting the presence of EVs. The mLSPS, which includes 2D-SWE, seemed to be useful for predicting EVs.

Validating and expanding the Baveno VI criteria for esophageal varices in patients with advanced liver disease: a multicenter study

Introduction:

According to the Baveno VI workshop, patients with compensated advanced liver disease, platelet count (PLT) >150,000/μL and liver stiffness measurement (LSM) <20 kPa can avoid screening endoscopy for high-risk varices (HRVs). The purpose of this study was to validate these criteria in a multicenter Greek cohort and consider other approaches that may further decrease the number of endoscopies.

Methods:

We prospectively enrolled patients with advanced liver disease (defined as LSM >12 kPa) and evaluated them according to the Baveno VI criteria. Exclusion criteria were splanchnic vein thrombosis, use of β-blockers, and esophageal varices. Screening endoscopy was conducted within 6 months of liver stiffness and laboratory measurements.

Results:

One-hundred seven consecutive patients were enrolled in the study to undergo LSM and screening endoscopy. Of these, 13 met the Baveno VI criteria (12.1%); none of the latter had HRVs. Additional parameters were examined, among which the quotient PLT/log₁₀LSM exhibited the largest area under the curve; concerning the latter, values ≤122,000 μL^-1 x kPa^-1 predicted high-risk varices with 100% sensitivity and negative predictive value (NPV), preventing 20.6% of patients from unneeded screening endoscopy (P=0.003). Moreover, values ≤92,000 μL^-1 x kPa^-1 exhibited 86% sensitivity and 94% NPV, preventing 44.9% of patients from unneeded screening endoscopy (P=0.001), while maintaining a tolerable percentage of overlooked patients with HRVs (6.3%).

Conclusions:

The Baveno VI criteria were successfully validated in our study. The quotient PLT/log₁₀LSM can be used to further decrease the number of screening endoscopies in patients with advanced liver disease.

Liver stiffness and serum markers for excluding high-risk varices in patients who do not meet Baveno VI criteria

BACKGROUND

The Baveno VI criteria for predicting esophageal varices, i.e., liver stiffness measurement (LSM) < 20 kPa and platelet (PLT) count > 150 × 10⁹/L, identify patients who can safely avoid gastroscopy screening. However, they require further refinement.

AIM

To evaluate the utility of LSM and serum markers of liver fibrosis in ruling out high-risk varices (HRV) in patients who do not meet Baveno VI criteria.

METHODS

Data from 132 patients with hepatitis B virus (HBV)-related compensated liver cirrhosis who did not meet the Baveno VI criteria were retrospectively reviewed. MedCalc 15.8 was used to calculate receiver operating characteristic (ROC) curves, and the accuracy of LSM, PLT count, aspartate aminotransferase (AST)-to-PLT ratio index, Fibrosis-4, and the Lok index in predicting HRV were evaluated according to the area under each ROC curve (AUROC). The utility of LSM, PLT, and serum markers of liver fibrosis stratified by alanine transaminase (ALT) and total bilirubin (TBil) levels was evaluated for ruling out HRV.

RESULTS

In all patients who did not meet the Baveno VI criteria, the independent risk factors for HRV were LSM and ALT. Only the AUROC of Lok index was above 0.7 for predicting HRV, and at a cutoff value of 0.4531 it could further spare 24.2% of gastroscopies without missing HRVs. The prevalence of HRV was significantly lower in patients with ALT or TBil ≥ 2 upper limit of normal (ULN) (14.3%) than in patients with both ALT and TBil < 2 ULN (34.1%) (P = 0.018). In the 41 patients with ALT and TBil < 2 ULN, LSM had an AUROC for predicting HRV of 0.821. LSM < 20.6 kPa spared 39.0% of gastroscopies without missing HRVs. In the 91 patients with ALT or TBiL ≥ 2 ULN, the Lok index and PLT had AUROCs of 0.814 and 0.741, respectively. Lok index ≤ 0.5596 or PLT > 100 × 10⁹/L further spared 39.6% and 43.9% of gastroscopies, respectively, without missing HRVs.

CONCLUSION

In HBV-related compensated cirrhosis patients who do not meet Baveno VI criteria, the LSM, PLT, or Lok index cutoff stratified by ALT and TBil accurately identifies more patients without HRV.

Magnetic resonance elastography increases usefulness and safety of non-invasive screening for esophageal varices

BACKGROUND AND AIMS

The Baveno VI criteria enable non-invasive screening for esophageal varices. However, these criteria were established based on studies examining a large proportion of patients with viral hepatitis and relatively few patients with non-alcoholic fatty liver disease (NAFLD). Furthermore, because vibration-controlled transient elastography (VCTE) has a high incidence of measurement error, improved criteria are needed. We aimed to develop criteria based on magnetic resonance elastography (MRE) even among patients with NAFLD.

METHODS

We performed a cross-sectional analysis of patients who had undergone MRE and/or VCTE as well as an esophagogastroduodenoscopy. The patients were classified as having either a low risk or a high risk of varices. The optimal cut-offs for ruling out esophageal varices were calculated for the MRE and VCTE liver stiffness measurement (LSM), the platelet count in an estimation cohort, and the cut-offs were then evaluated using validation cohorts composed of patients who had undergone only MRE or VCTE.

RESULTS

The study included 627 patients (39% with NAFLD). The optimal cut-off values for the MRE-LSM and the platelet count were 4.2 kPa and 18.0 × 10⁴ /μL, respectively. An MRE-LSM of 4.2 kPa plus a platelet count of 18.0 × 10⁴ /μL had a negative predictive value of 1.00 for both low-risk plus high-risk varices as well as for high-risk varices in a validation cohort, enabling the presence of varices to be ruled out.

CONCLUSIONS

Magnetic resonance elastography might enable a safer avoidance of screening endoscopy, with a smaller measurement error, among patient populations with a high prevalence of NAFLD.