Prevalence Of Advanced Fibrosis Research Articles

The grade of obesity affects the noninvasive diagnosis of advanced fibrosis in individuals with MASLD.

Metabolic dysfunction-associated steatotic liver disease (MASLD) is closely associated with obesity. We aimed to assess the impact of obesity on the performance of different noninvasive tests, including liver stiffness measurement (LSM) and Agile3+ (A3+), to detect advanced fibrosis (AF) in a population of patients with MASLD encompassing a wide range of BMI values. A total of 479 patients with MASLD were consecutively included (Lyon Hepatology Institute). Clinical data and noninvasive tests, including FibroTest, LSM, A3+, Fibrosis-4 (FIB-4), magnetic resonance elastography, and liver biopsies, were collected. AF was determined by a composite endpoint, i.e., histological stage ≥ F3, overt diagnosis of cirrhosis by magnetic resonance elastography, or concordant LSM ≥ 9.6 kPa and FibroTest ≥ F3. The median BMI was 35.0 kg/m2, and the prevalence of AF was 28.6%. Patients with BMI ≥ 35 versus <35 had a lower proportion of AF, i.e., 19.3% versus 38.1% (p < 0.001), but higher indeterminate status for AF (34.2% vs. 15.4%; p < 0.001). In the case of BMI ≥ 35, LSM had lower specificity to rule in AF (77.9%) versus A3+ (90.4%), but A3+ had decreased sensitivity to rule out AF. A sequential LSM/A3+ strategy achieved high specificity to rule in AF and lowered the proportion of indeterminate cases in patients with BMI ≥ 35. The grade of obesity affects the detection of MASLD-related AF. A sequential use of LSM/A3+ could improve AF detection in patients with BMI ≥ 35.

Chronic exposure to ambient air pollution and the risk of non-alcoholic fatty liver disease: A cross-sectional study in Taiwan and Hong Kong

BackgroundInformation on the relation of air pollution with non-alcoholic fatty liver disease (NAFLD) is scarce. We thus conducted a large cross-sectional study in Asia to investigate the role of air pollution in NAFLD. MethodsWe recruited 329,048 adults (mean age: 41.0 years) without other liver disease (hepatitis and cirrhosis) or excessive alcohol consumption in Taiwan and Hong Kong from 2001 to 2018. The concentrations of nitrogen dioxide (NO2) and ozone (O3) were estimated using a space–time regression model, and the concentrations of fine particulate matter (PM2.5) was evaluated using a satellite-based spatio-temporal model. NAFLD was determined using either the fatty liver index (FLI) or the hepatic steatosis index (HSI). The NAFLD-related advanced fibrosis was defined according to BARD score or the fibrosis-4 (FIB-4). A logistic regression model was adopted to explore the relationships of ambient air pollution with the odds of NAFLD and NAFLD-related advanced fibrosis. ResultsWe found positive relationships between PM2.5 and the odds of NAFLD and advanced fibrosis, with every standard deviation (SD, 7.5 µg/m3) increases in PM2.5 exposure being associated with a 10% (95% confidence interval [CI]: 9%–11%) increment in the prevalence of NAFLD and an 8% (95% CI: 7%–9%) increment in the prevalence of advanced fibrosis. Similarly, the prevalence of NAFLD and advanced fibrosis increased by 8% (95% CI: 7%–9%) and 7% (95% CI: 6%–8%) with per SD (18.9 µg/m3) increasement in NO2 concentration, respectively. Additionally, for every SD (9.9 µg/m3) increasement in O3 concentration, the prevalence of NAFLD and advanced fibrosis decreased by 12% (95% CI: 11%–13%) and 11% (95% CI: 9%–12%), respectively. ConclusionHigher ambient PM2.5 and NO2 are linked with higher odds of NAFLD and advanced fibrosis. Our findings indicate that reducing PM2.5 and NO2 concentrations may be an effective way for preventing NAFLD. Further studies on O3 are warranted.

P1178 Detection of occult liver disease in patients with Inflammatory Bowel Disease

Abstract Background Investigation of liver disease is recommended in the ECCO Guidelines for Extraintestinal Manifestations in Inflammatory Bowel Disease (IBD). The aim of this study was to analyse the prevalence of liver disease in IBD patients, to examine the frequency of different aetiologies, and to investigate a possible correlation between the severity of liver disease and IBD. Methods Cross-sectional descriptive study including all patients with inflammatory bowel disease (IBD) of nine hospitals in Spain. The study of liver disease was carried out in two phases: patients with FIB-4 greater than 1.3 (greater than 2 in those aged 65 years or more), as well as those with APRI greater than 0.5 and/or elevated transaminases were selected as those at risk of liver disease. In the second phase, these patients underwent a medical history, comprehensive blood tests, abdominal ultrasound with SWE elastography and Fibroscan® (including transitional elastography (TE) and Controlled Attenuation Parameter (CAP)). Results In total, 5302 patients were enrolled and 1640 (31%) were identified as at risk for liver disease. The University Hospital of Burgos has completed the second phase of the study in patients diagnosed with IBD between 2010 and 2021 (n=151). Of these patients, 72.2% were male and the median age was 61 years. Ulcerative colitis (57%) was the most common type of IBD and 62% of the patients were overweight or obese, while 12% of the patients had high-risk alcohol consumption. Metabolic hepatic steatosis was the most frequent cause of liver disease (35%). Moderate/severe steatosis was detected in 44.3% of patients by CAP and 24% by ultrasound. The prevalence of advanced fibrosis was 10.6% and 12% when assessed by ET and SWE, respectively. Notably, 12.6% displayed ultrasound signs of chronic liver disease. A positive correlation was found between the ET and the SWE for liver fibrosis, with a correlation coefficient of ĸ = 0.663. On univariate analysis, an increased risk of significant fibrosis (p=0.011) and moderate/severe steatosis (p=0.00) was found only in those who were overweight or obese. However, no association with severity of liver disease was found for perianal disease, use of immunosuppressants or history of previous surgery. Conclusion The incidence of unrecognised liver disease in IBD patients is substantial, with metabolic hepatic steatosis being the most common cause. The severity of liver disease in these patients cannot be ignored, with one in ten patients having advanced fibrosis. In the univariate study, only obesity was found to correlate with the severity of steatosis and fibrosis, while IBD severity showed no significant association with liver disease severity.

Accuracy of the Enhanced Liver Fibrosis Test in Patients With Type 2 Diabetes Mellitus and Its Clinical Implications

Background and AimsThe diagnostic performance of the Fibrosis-4 (FIB-4) index and nonalcoholic fatty liver disease (NAFLD) fibrosis score (NFS) is poor in patients with type 2 diabetes mellitus (T2DM). We determined the usefulness of the enhanced liver fibrosis (ELF) test in patients with T2DM. MethodsA total of 1,228 patients with biopsy-proven NAFLD were enrolled. The diagnostic performance of the ELF test for predicting advanced fibrosis in participants with or without T2DM was evaluated in comparison with the FIB-4 index and NFS. ResultsOverall, the area under the curve of the ELF test for predicting advanced fibrosis was greater (0.828) than that of the FIB-4 index (0.727) and NFS (0.733). The diagnostic performance of the ELF test (area under the curve 0.820) was also superior to that of the FIB-4 index (0.698) and NFS (0.700) in patients with T2DM. With the low cutoff values for each non-invasive test, the ELF test provided an acceptable false-negative rate (cutoff value 9.8, 6.7%) in this population, unlike the FIB-4 index (1.30, 14.5%) and NFS (−1.455, 12.4%). After propensity score matching to avoid selection bias including age, sex, body mass index, and the prevalence of advanced fibrosis, the ELF test with a low cutoff value showed a high sensitivity (≥91.4%) and a high negative predictive value (≥96.8%), irrespective of the presence or absence of T2DM. ConclusionThe high diagnostic performance of the ELF test for predicting advanced fibrosis in individuals with or without T2DM could address an unmet medical need for accurate assessment of liver fibrosis in patients with diabetes and NAFLD.

CLivD score modifies FIB-4 performance in liver fibrosis detection in the US general population

Background and aimsSteatotic liver disease (SLD) is a growing global concern. The Chronic Liver Disease (CLivD) risk score predicts liver-related outcomes in the general population using easily accessible variables with...

Overall and subgroup prevalence of non-alcoholic fatty liver disease and prevalence of advanced fibrosis in the United States: An updated national estimate in National Health and Nutrition Examination Survey (NHANES) 2011-2018

Introduction and ObjectivesData on the prevalence of non-alcoholic fatty liver disease (NAFLD) in subgroups of the United States (US) population are limited. This study was conducted to estimate NAFLD prevalence overall and by subgroups, and prevalence of NAFLD with advanced fibrosis. Materials and MethodsUsing the National Health and Nutrition Examination Survey (NHANES) 2011-2018 data, a cross-sectional study was conducted. NAFLD was defined as having a US Fatty Liver Index (USFLI) ≥ 30 in the absence of other causes of liver disease, including excessive alcohol intake, chronic hepatitis B, and chronic hepatitis C. Likelihood for having advanced fibrosis was determined by the calculated NAFLD fibrosis score (NFS; high ≥ 0.676; low < −1.445) and fibrosis-4 index (FIB-4; high ≥ 2.67; low < 1.30). ResultsThe weighted national prevalence of NAFLD in US adults was 26.7% (95% confidence interval: 25.3%-28.1%). Prevalence was higher among those aged ≥ 65 years, males, Mexican Americans, with BMI ≥ 35 kg/m2 (class 2 and 3 obesity) and with type 2 diabetes (T2D). Of those meeting the USFLI criterion for NAFLD, 18.1% and 3.7% were determined as having a high probability of advanced fibrosis based on NFS ≥ 0.676 and FIB-4 ≥ 2.67 cut-off values, respectively. ConclusionsThis study supports an increased prevalence of NAFLD in specific subpopulations (aged ≥ 65 years, males, Mexican Americans, obese population, and patients with T2D). The observed difference in the prevalence of advanced fibrosis as estimated by NFS and FIB-4 highlights the challenge of choosing optimal cut-off values.

1396-P: Prevalence of Nonalcoholic Fatty Liver Disease (NAFLD) and Advanced Fibrosis among Subjects without Type 2 Diabetes (T2D)

Background: NAFLD is highly prevalent in patients with T2D. The prevalence of NAFLD in nondiabetics (ND) is not known. Aim: Assess the prevalence of NAFLD in ND subjects in the US. Methods: Data from NHANES 2017-2020 were used. NAFLD was determined by transient elastography with a CAP of ≥285 dB/m without other causes of liver disease. Significant fibrosis (SF) definition was liver stiffness measurement (LSM) &amp;gt;8.0 kPa and advanced fibrosis (AF) definition was LSM&amp;gt;13.1 kPa. Prediabetes (Pre-D) definition was fasting glucose of 100-125 mg/dL or HbA1c of 5.7%-6.5% in T2D absence. ND definition was not having T2D or Pre-D. Results: Among 5,142 patients (mean age 51.5 years, 19.4% T2D, 35.2% Pre-D and 45.4% ND). The prevalence of NAFLD among T2D, Pre-D and ND was 67.7%, 40.0% and 24.6%. As compared to Pre-D and T2D, ND patients were younger (45.6 years vs 53.4 and 62.2 years), more likely to be female (51.4% vs 43.9% and 45.3%) and less metabolically unhealthy [hypertension: 39.7% vs 56.9% and 83.9%, hyperlipidemia: 63.6%, 73.3%, and 89.0% and HOMA-IR &amp;gt; 2.5: 26.5%, 54.8%, and 84.9% (all p&amp;lt;.001)]. The prevalence of SF and AF among NAFLD with ND, Pre-D and T2D were 17.1% and 4.9%, 16.0% and 6.2%, and 32.4% and 11.8%, respectively. Factors associated with higher risk of AF varied by T2D status (Table). Conclusions: NAFLD can occur in nondiabetics and associated with insulin resistance and elevated CRP. Disclosure P. Golabi: None. J.M. Paik: None. A. Kumar: None. N. Gundurao: None. K. Cusi: Research Support; Echosens, Inventiva. Consultant; Poxel SA. Research Support; LabCorp, Zydus. Consultant; Altimmune, Arrowhead Pharmaceuticals, Inc., AstraZeneca, 89bio, Inc., Bristol-Myers Squibb Company, Lilly, Madrigal Pharmaceuticals, Inc., Merck &amp; Co., Inc., Medscape, Myovant, Novo Nordisk, ProSciento, Quest Diagnostics, Sagimet, Sonic Incytes, Terns. Z. Younossi: Consultant; AbbVie Inc., BMS, Gilead Sciences, Inc., Novo Nordisk, Merck &amp; Co., Inc., Quest Diagnostics, Siemens, Intercept Pharmaceuticals, Inc., Viking Therapeutics.

Performance of Simple Fibrosis Score in Non-Alcoholic Fatty Liver Disease with and without Type 2 Diabetes.

This cross-sectional study enrolled 267 patients with metabolic risk factors and established non-alcoholic fatty liver disease in the prospective cohort. The performance of fibrosis-4 (FIB-4) score (≥1.3) to diagnose advanced fibrosis using transient elastography (liver stiffness measurement [LSM] ≥8 kPa) was analyzed. Comparing patients with type 2 diabetes (T2D, n=87) and without (n=180), not FIB-4, but LSM was significantly higher in T2D (P=0.026). The prevalence of advanced fibrosis was 17.2% in T2D and 12.8% in non-T2D. FIB-4 exhibited higher proportion of false negatives in T2D patients (10.9%) than those without (5.2%). The diagnostic performance of FIB-4 was suboptimal in T2D (area under curve [AUC], 0.653; 95% confidence interval [CI], 0.462 to 0.844) compared to that in non-T2D (AUC, 0.826; 95% CI, 0.724 to 0.927). In conclusion, patients with T2D might be beneficial to conduct transient elastography without screening to avoid missing advanced fibrosis.

Lean individuals with NAFLD have more severe liver disease and poorer clinical outcomes (NASH-CO Study).

The severity of liver injury and clinical outcomes in lean individuals with NAFLD is a subject of debate and very few studies have been performed in the general population. The aim of this study was to compare subject characteristics and mortality between lean and nonlean NAFLD in a community setting. The study population included 169,303 participants from the nationwide Constances cohort. Subjects with excessive alcohol consumption, viral hepatitis, or other liver diseases were excluded and 137,206 subjects were analyzed. The diagnosis of NAFLD and fibrosis was performed using the Fatty Liver Index and the Forns Index. The median follow-up was 3.58 years. The prevalence of NAFLD was 5.3% (95% CI: 5.2-5.4) in lean subjects, while 16.3% (95% CI: 15.7-16.8) of NAFLD subjects were lean. Despite their better metabolic profile, the prevalence of advanced fibrosis was significantly higher in lean than in nonlean NAFLD (3.7% vs. 1.7%, respectively, p < 0.01). Among NAFLD subjects and after adjustment for demographics, metabolic risk factors and lifestyle, lean status was associated with advanced fibrosis (OR=1.26, 95% CI: 1.20-1.65, p = 0.005), an increased risk of liver-related events (adjusted HR=5.84, 95% CI: 4.03-8.46), chronic kidney disease (adjusted HR=2.49, 95% CI: 1.49-4.16), and overall mortality (adjusted HR=3.01, 95% CI: 2.21-4.11). Liver-related events and overall mortality were related to the severity of fibrosis, both in lean and nonlean NAFLD subjects, whatever the usual risk factors. This study in a large community-based cohort confirms that NAFLD in lean subjects is more severe for fibrosis, the progression of liver disease, chronic kidney disease, and overall mortality.

Risk of advanced fibrosis in first-degree relatives of patients with nonalcoholic fatty liver disease.

BACKGROUNDA pilot, single-center study showed that first-degree relatives of probands with nonalcoholic fatty liver disease (NAFLD) cirrhosis have a high risk of advanced fibrosis. We aimed to validate these findings using 2 independent cohorts from the US and Europe.METHODSThis prospective study included probands with NAFLD with advanced fibrosis, NAFLD without advanced fibrosis, and non-NAFLD, with at least 1 first-degree relative. A total of 396 first-degree relatives - 220 in a derivation cohort and 176 in a validation cohort - were enrolled in the study, and liver fibrosis was evaluated using magnetic resonance elastography and other noninvasive imaging modalities. The primary outcome was prevalence of advanced fibrosis in first-degree relatives.RESULTSPrevalence of advanced fibrosis in first-degree relatives of probands with NAFLD with advanced fibrosis, NAFLD without advanced fibrosis, and non-NAFLD was 15.6%, 5.9%, and 1.3%, respectively (P = 0.002), in the derivation cohort, and 14.0%, 2.6%, and 1.3%, respectively (P = 0.004), in the validation cohort. In multivariable-adjusted logistic regression models, age of ≥50 years (adjusted OR [aOR]: 2.63, 95% CI 1.0-6.7), male sex (aOR: 3.79, 95% CI 1.6-9.2), diabetes mellitus (aOR: 3.37, 95% CI 1.3-9), and a first-degree relative with NAFLD with advanced fibrosis (aOR: 11.8, 95% CI 2.5-57) were significant predictors of presence of advanced fibrosis (all P &lt; 0.05).CONCLUSIONFirst-degree relatives of probands with NAFLD with advanced fibrosis have significantly increased risk of advanced fibrosis. Routine screening should be done in the first-degree relatives of patients with advanced fibrosis.FUNDINGSupported by NCATS (5UL1TR001442), NIDDK (U01DK061734, U01DK130190, R01DK106419, R01DK121378, R01DK124318, P30DK120515, K23DK119460), NHLBI (P01HL147835), and NIAAA (U01AA029019); Academy of Finland grant 309263; the Novo Nordisk, EVO, and Sigrid Jusélius Foundations; and the Innovative Medicines Initiative 2 Joint Undertaking under grant agreement 777377. This Joint Undertaking receives support from the European Union's Horizon 2020 research and innovation program and the EFPIA.

408-P: Fibrosis 4 Index Related to Microalbuminuria in Tibetan Patients with T2D and NAFLD

Aim: The co-existence of type 2 diabetes (T2D) with nonalcoholic fatty liver disease (NAFLD) significantly increases the prevalence of advanced fibrosis and end-stage liver disease, as well as cardiovascular disease risk and mortality. Fibrosis 4 (FIB-4) index has been described as a non-invasive marker to detect liver fibrosis, based on several laboratory texts (AST/ALT/Platelets) . This study aimed to explore the relationship between FIB-4 index and macroalbuminuria in patients with T2D and NAFLD. Methods: This cross-sectional utilized data in Tibetan patients with T2D and NAFLD from 2020-2021. Patients were divided into two groups based on FIB-4 index (group 1: FIB-4&amp;lt;1.45; group 2: FIB-4≥1.45) . Reduced eGFR was defined as eGFR &amp;lt;60 ml/min per 1.73 m2 and macroalbuminuria was defined as urinary albumin/creatine ≥ 300 mg/g. Results: A total of 362 patients were recruited. Clinical characteristics of subjects were showed in Table 1. In Multiple logistic regression analysis, compared to patients with FIB-4 &amp;lt;1.45, those with FIB-4 ≥ 1.45 were at a 2.26-fold (95% CI:1.08-4.73) for macroalbuminuria, after adjusted for age, gender, duration of T2D, BMI, LDL-C, HbA1c and hypertension. However, FIB-4 index was not associated with reduced eGFR (OR: 2.34, 95% CI: 0.89-6.18) . Conclusions: Our finding showed that an increase in FIB-4 index was independently associated with macroalbuminuria in T2D patients with NAFLD. Disclosure C.Zhang: None.

Non-alcoholic fatty liver disease in patients with type 2 diabetes in Greenland: a register-based cross-sectional study

ABSTRACT Non-alcoholic fatty liver disease (NAFLD) is the most common liver disease worldwide due to its close association to the metabolic syndrome of type 2 diabetes mellitus (T2DM), obesity and insulin resistance. However, the prevalence and severity of NAFLD in Greenland remain unexplored. We aimed to estimate the prevalence of liver steatosis and fibrosis among Greenlanders and Danes with T2DM living in Greenland using biochemical surrogate markers. We included 1409 Greenlanders and 182 Danes with T2DM in this register-based cross-sectional study. Greenlanders had higher BMI and plasma lipid levels and lower HbA1c levels compared with Danes (p<0.05). Their median alanine aminotransferase (ALAT) levels were similar. However, more Greenlanders had elevated ALAT levels (20.5% vs. 11.5%, p<0.05). Greenlanders had lower FIB-4 scores than Danes, 0.91 (IQR: 0.66–1.27) vs. 0.97 (IQR: 0.78–1.34), without difference in FIB-4 score categories (p=0.27). The prevalence of advanced fibrosis was low in both populations (1.7–2.6%). In conclusion, Greenlanders with T2DM had better glycaemic control despite higher BMI and plasma lipids. A larger proportion of Greenlanders had elevated plasma ALAT levels, while FIB-4 scores were lower than Danes. These findings suggest that Greenlanders with T2DM may be less likely to develop liver complications than Danes with T2DM in Greenland.

Effect of hepatic steatosis and associated metabolic comorbidities on health-related quality of life in people living with HIV.

Hepatic steatosis (HS) related to nonalcoholic fatty liver disease (NAFLD) is increasing globally. In people living with human immunodeficiency virus (PLWH) risk factors of HS are increased. The impact of HS on outcomes and in particular health‐related quality of life (HRQL) in PLWH remains unknown. The aim of this cross‐sectional cohort study (FLASH, Prevalence of Advanced Fibrosis in Patients Living With HIV) was to determine the contribution of HS on HRQL in PLWH and to identify confounders on HRQL. A total of 245 PLWH were prospectively enrolled. HS was assessed using vibration‐controlled transient elastography and defined as a controlled attenuation parameter (CAP) of ≥ 275 dB/m. The analysis was performed between CAP < 275 and ≥ 275 dB/m. The generic European Quality‐of‐Life 5‐Dimension 5‐Level questionnaire was used to determine differences in the HRQL. Univariable and multivariable linear regression models were applied to identify predictors with impaired HRQL in both groups. In this cohort, 65% (n = 160) presented without and 35% (n = 85) with HS, of whom most had NAFLD (n = 65, 76.5%). The HRQL (UI‐value) was significantly lower in PLWH and steatosis (0.86 ± 0.18) in comparison with no steatosis (0.92 ± 0.13). Unemployment (p = 0.025) and waist circumference (p = 0.017) remained independent predictors of a poor HRQL in the steatosis subgroup. In turn, age (p = 0.045), female sex (p = 0.030), body mass index (p = 0.010), and arterial hypertension (p = 0.025) were independent predictors of a low HRQL in the subgroup without steatosis. Conclusion: HS and metabolic comorbidities negatively affect the HRQL. Addressing these factors may improve patient‐reported and liver‐related outcomes in PLWH.

Prevalence and Risk Factors of Advanced Liver Fibrosis in a Population-Based Study in Germany.

The prevalence of liver disease, and especially of advanced liver fibrosis, in the German population is poorly defined. The aim of the study was to explore liver enzymes and surrogate scores of hepatic steatosis and advanced hepatic fibrosis in a population‐based cohort study in Germany. In the cross‐sectional population‐based Gutenberg Health study, data of 14,950 participants enrolled between 2007 and 2012 were captured and analyzed. The distribution of alanine aminotransferase (ALT), aspartate aminotransferase (AST), gamma‐glutamyltransferase (GGT), fatty liver index (FLI), and Fibrosis‐4 (FIB‐4) score, as well as the underlying risk factors, were assessed by regression models. Elevated liver enzymes in this population‐based sample were seen in 19.9% for ALT, 12.8% for AST, and 14% for GGT. Risk factors for liver disease included alcohol use and the presence of the metabolic syndrome, which were both risk factors associated with increased liver enzymes. The FLI suggested that 37.5% of the population exhibited hepatic steatosis and 1.1% of patients exhibited a FIB‐4 above the upper cutoff, while 19.2% were in the intermediate range. Interestingly, advanced fibrosis was significantly more frequent in men compared with women (FIB‐4: 1.5% vs. 0.6% [P < 0.0001]; NFS: 3.6% vs. 1.9% [P < 0.0001]). In addition, age was a relevant risk factor for exhibiting a noninvasive surrogate score suggestive of advanced fibrosis in the current study population. Conclusion: Elevated liver enzymes were seen in almost a fifth of the German population. At the population‐based level, the prevalence of advanced fibrosis was estimated at 1% in Germany.

Assessment of the Association of HIV Infection with Hepatic Steatosis or Fibrosis: a Cross-sectional Case–Control Study

Human immunodeficiency virus (HIV) infection and antiretroviral therapy have been associated with non-alcoholic fatty liver disease (NAFLD), but few studies have evaluated whether HIV infection is an independent risk factor for the development of hepatic steatosis and advanced liver fibrosis. To study the prevalence and severity of hepatic steatosis and advanced fibrosis in people living with HIV and control outpatients. We conducted a cross-sectional analysis of relevant data from 875 pairs of individuals belonging to an HIV-dedicated outpatient clinic and an adult primary care clinic of an inner-city hospital. Hepatic Steatosis Index (HSI) and FIB-4 index were calculated as non-invasive measures of steatosis and fibrosis, respectively. A multivariate logistic regression analysis was performed to assess predictors of steatosis and advanced fibrosis. The prevalence of hepatic steatosis, determined by HSI ≥ 36, was higher in HIV-negative subjects (71.5% vs. 65.4%, p = 0.006). The prevalence of advanced fibrosis, determined by FIB-4 index ≥ 3.25, was higher in the HIV-positive group (7% vs. 1.7%, p < 0.001). Multivariable analysis did not identify HIV infection to be an independent risk factor for hepatic steatosis (p = 0.068) and advanced fibrosis. In this cohort, hepatic steatosis was more prevalent in non-HIV infected patients, while advanced fibrosis had a higher prevalence in people living with HIV. HIV infection was not found to be an independent risk factor for either hepatic steatosis or fibrosis.

P-89 ASSESSMENT OF HEPATIC FIBROSIS IN TYPE 2 DIABETIC PATIENTS: A CROSS SECTIONAL ANALYSIS

Metabolic dysfunction associated fatty liver disease (MAFLD) was suggested recently as a more appropriate nomenclature to describe the liver disease associated with known metabolic dysfunction .Type 2 Diabetes is a risk factor for MAFLD, steatohepatitis and patients are at increased risk to developing liver fibrosis and need to be more investigated. To investigate which MAFLD patients with type 2 diabetes have higher risk for advanced fibrosis. Patients in diabetes clinic, without known hepatic diseases and without significant alcohol intake (< 21 drinks per week), were voluntarily selected to perform liver ultrasound, liver stiffness and CAP measurements using Fibroscan (Echosens, Paris, France) and serological tests for B and C hepatitis to exclude viral causes of liver disease. Subjects were submitted to a complete clinical examination and laboratory tests. 90 patients were included in this cross-sectional analysis. Overall, 12,2% (11 patients) had advanced fibrosis (liver stiffness > 8,7 Kpa) and 23% (21 patients) had severe steatosis (Grade 3 steatosis; CAP> 290 db/m) based on transient elastography. Factors associated with significant fibrosis were age over 60 years old, alanine amino transferase (ALT) elevation, low HDL (lower than 40), triglycerides elevation, higher BMI and severe steatosis. Prevalence of advanced fibrosis and severe steatosis in patients with type 2 diabetes and MAFLD is very high (12,2% and 23% respectively), what makes screening of these high-risk patients very important. Risk factors such as elevated glycated hemoglobin, higher BMI, triglycerides, ALT and CAP measurements on Fibroscan and low HDL indices are considered to be associated to advanced liver fibrosis.

Non-Invasive Assessment of Liver Fibrosis and Steatosis in End-Stage Renal Disease Patients Undergoing Renal Transplant Evaluation.

BackgroundNon-alcoholic fatty liver disease (NAFLD) has an increased prevalence in end-stage renal disease (ESRD) due to similar risk factors. The aim of this study was to assess non-invasive testing including transient elastography (TE) for liver stiffness (LS), controlled attenuated parameter (CAP) for steatosis, Fibrosis-4 (FIB-4) score, aspartate aminotransferase (AST) to platelet ratio index (APRI) and NAFLD fibrosis score (NFS), for evaluation of NAFLD along with advanced fibrosis (AF) in patients with ESRD undergoing renal transplant evaluation.MethodsData were retrospectively collected within 12 weeks of TE. Primary outcomes were AF, defined by LS ≥ 9 kPa compared to APRI > 1.5, FIB-4 > 2.67, and NFS of 0.675, and ≥ 5% steatosis by CAP ≥ 263 dB/m compared to liver histology when available.ResultsA total of 171 patients were evaluated: mean age 56, 65% male, 36% obese, 47% had diabetes, 96% hypertension, and 56% dyslipidemia. Mean LS was 6.5 kPa with 21% having AF. Mean CAP was 232 dB/m, with 25% having steatosis. Those with AF were older with higher NFS. Those with steatosis were obese and had diabetes without higher LS or fibrosis scores. Only NFS was associated with LS ≥ 9 kPa. In those with liver histology, AF was associated with LS ≥ 9 kPa but not with APRI, FIB-4, or NFS.ConclusionsDespite normal liver enzymes, non-invasive assessment via TE in ESRD patients exhibited high prevalence of AF and steatosis not detected by APRI or FIB-4 scores. This high prevalence was secondary to the common risk factors such as obesity and diabetes, among patients with NAFLD and ESRD.

A209 NON-INVASIVE ASSESSMENT OF LIVER FIBROSIS USING APRI, FIB-4, AND TRANSIENT ELASTOGRAPHY IN CHRONIC HEPATITIS B PATIENTS

Abstract Background Accurate assessment of liver fibrosis is important to identify patients with chronic hepatitis B (CHB) who require antiviral therapy. As liver biopsy is invasive and costly, non-invasive tests of liver fibrosis are increasingly being used. Aims We aimed to evaluate the performance of the aspartate aminotransferase-to-platelet ratio index (APRI), Fibrosis 4 index (FIB-4), and transient elastography (TE) in predicting fibrosis in patients with CHB. Methods We retrospectively analyzed a prospectively enrolled cohort of consecutive adults with CHB who underwent liver biopsy for routine clinical indications (ALT &amp;gt; ULN and HBV DNA &amp;gt; 2,000 IU/ml) from January 2018 to December 2019. Demographic information, routine biochemistry, HBV serology including HBV DNA, abdominal ultrasound, fibrosis stage by liver biopsy and TE data were collected. Positive predictive values (PPV) and negative predictive values (NPV) were calculated using published cut-off values with liver biopsy as the reference standard. Results Fifty-five patients of Asian ethnicity (mean age 46 years, 65% male) were included. Most patients were HBeAg-negative (67%) and treatment-naïve (80%). Eleven (20%) patients had advanced fibrosis (F3-F4 METAVIR) and 4 (7%) patients had cirrhosis (F4). APRI &amp;lt;0.50 had a NPV of 73% for significant fibrosis (F2-F4) and APRI &amp;gt;1.50 had a PPV of 33% for significant. All 4 patients with cirrhosis were misclassified as having no cirrhosis with an APRI &amp;lt;1. FIB-4 &amp;lt;1.45 had a NPV of 90% for advanced fibrosis (F3-F4). No patient, including 11 patients with advanced fibrosis, had a FIB-4 above the cut-off value to detect advanced fibrosis (&amp;gt;3.25). TE data was available for 38 patients. TE &amp;lt;7.25 kPa had a NPV of 78% for significant fibrosis and TE &amp;gt;12.4 kPa had a PPV of 50% for cirrhosis. Conclusions In Asian patients with CHB and a low prevalence of advanced fibrosis or cirrhosis, APRI, FIB-4, and TE performed well in excluding those with advanced fibrosis but were unable to accurately identify those with significant/advanced fibrosis and cirrhosis. Further studies with larger numbers of CHB patients are needed to confirm our results. Funding Agencies None

Use of noninvasive scores for advanced liver fibrosis can guide the need for hepatic biopsy during bariatric procedures.

Patients with obesity are at increased risk for nonalcoholic fatty liver disease (NAFLD). The effectiveness of noninvasive screening tests for ruling out advanced fibrosis (stage 3-4) is unknown. To determine the prevalence of advanced fibrosis in patients undergoing routine liver biopsy during bariatric surgery and assess the effectiveness of existing noninvasive risk calculators. Academic medical center in the United States. Routine liver biopsies were obtained during first-time bariatric surgery (January 2001-December 2017). Patient demographic characteristics, co-morbidities, and preoperative laboratory values were compiled. Sensitivity, specificity, negative predictive value (NPV), and positive predictive value (PPV) were compared between 3 noninvasive risk calculators for advanced fibrosis: the fibrosis-4 index, NAFLD fibrosis score, and aminotransferase-to-platelet ratio index (APRI). Among 2465 patients, the prevalence of advanced fibrosis (stage 3-4) was 3.4%. The mean age was 45.5 years, and the mean body mass index was 46.8. The sensitivity of noninvasive risk calculators ranged from 85% (NAFLD fibrosis score) to 24% (APRI). The NAFLD fibrosis score performed best in screening out advanced fibrosis, with an NPV of 99%. The PPV ranged from 9% to 65%. In this study cohort, the use of the NALFD fibrosis score correctly ruled out advanced fibrosis in 893 (36%) patients, with 13 false negatives. The prevalence of advanced fibrosis in individuals undergoing routine first-time bariatric procedures is 3.4%. Use of the NALFD fibrosis score can rule out advanced fibrosis in one-third of this population, and guide surgical decision-making.

S1049 Characteristics of a Hispanic Cohort With Non-Alcoholic Fatty Liver Disease in South Texas

INTRODUCTION: In the US, the prevalence and characteristics of Non-alcoholic Fatty Liver Disease (NAFLD) in the Latino population have been poorly described in the literature, with few epidemiological data in a strictly Hispanic cohort. The aim of our study was to further characterize a cohort of patients in South Texas and to assess the predictive value of using vibration controlled transient elastography (TE) to determine histologic diagnosis of non-alcoholic steatohepatitis (NASH) with liver fibrosis. METHODS: This retrospective study cohort analysis was conducted on patients seen at the Gastroenterology/Liver Institute at DHR in South Texas from January 2015 to March 2019. Patients were included if they were ages 18-85, with no alcohol abuse, or other etiology of liver disease, who had high-risk TE results, defined as controlled attenuation parameter(CAP) > 280 and TE Liver stiffness measurement (LSM) > 8.5 kPa. RESULTS: We included 178 patients in our study (mean age 52, 59% women). Hispanic ethnicity made up 94% of the cohort. Mean BMI of 35, 53.4% had diabetes mellitus type 2, and 63% hypertension. Notably, the mean AST was 48.4 IU/L. All patients had clinical diagnosis of NAFLD after excluding other liver disease; because of their risk factors, they underwent TE. TE findings showed a mean LSM was 19.3kPa and a mean CAP of 336.5db/M. Secondary analysis was done for 60 patients who had liver biopsy. Liver biopsies were read by a single GI-trained pathologist to avoid inter-observer variability. We used a NAFLD activity score (NAS) of > 3 to be diagnostic of steatohepatitis, 47% of patients with liver biopsy had a NAS > 3. Fibrosis staging review reported 88% of patients with at least F1-F4 disease. Those with advanced fibrosis (F2-F4) made up 61% of biopsied patients. Interestingly, 29% of patients had F4 correlating to a diagnosis of compensated NASH cirrhosis. CONCLUSION: In our cohort of patients in South Texas, a high-risk TE result was clinically successful in identifying patients with NASH and some fibrosis. The mean LSM in our cohort of 19.3 kPa suggest that obesity affecting TE results and high-risk disease play a role in our results. When looking at a Hispanic cohort of patients with diabetes and obesity, prevalence of NASH was close to 50% and prevalence of advanced fibrosis was 61%. These data further expand our understanding of high-risk disease in our region. To our knowledge this is the first retrospective NAFLD cohort analysis strictly from Texas-based cohort of Hispanics in the US.