279-LB: NIS4, a Novel Blood Test, Can Identify "At-Risk" NASH (NAS&gt;4 and Fibrosis&gt;2) in T2D Patients
Authors: STAELS BART , RATZIU VLAD , FRANCQUE SVEN , HARRISON STEPHEN A. , BEDOSSA PIERRE , ROUDOT ALICE , MAJD ZOUHER , BROZEK JOHN , BEN-SUDRIK FOUAD , BIRMAN PASCAL , HUM DEAN W. , HOSMANE SUNEIL , CHAUMAT PIERRE , HANF RéMY , CARIOU BERTRAND , SANYAL ARUN 
Published: June 2019

Background and Aim: T2D is an independent risk factor for the development of nonalcoholic steatohepatitis (NASH). Amongst NASH patients, those with elevated disease activity (NAS≥4) and fibrosis (F≥2) upon scoring of a liver biopsy are at higher risk of progressing to negative clinical outcomes. There is a lack of diagnostic tools to identify these “at-risk𠇍 NASH patients that need clinical intervention. Here we compare the ability of NIS4, a novel blood test, to other available tests for detection of “at-risk” NASH in a T2D population.
Methods: The blood and liver biopsy samples from 714 patients (446 non-T2D + 268 T2D) with metabolic risk factors for NASH were used. Disease activity (NAS) and fibrosis stage (F) were evaluated by a single expert pathologist. “At-risk” NASH was defined as NASH with NAS≥4 and F≥2. The diagnostic performance of NIS4 to identify patients with “at-risk” NASH in T2D subpopulation was assessed through ROC analysis and compared versus existing tests and statistical comparisons were done by DeLong testing.
Results: In the total cohort (T2D prevalence = 38%), AUROC of NIS4 was 0.83 [95% CI: 0.80 - 0.86] for identifying “at-risk” NASH. The prevalence of “at-risk” NASH was higher in T2D (61%) vs. non-T2D (45%). AUROC was comparable in T2D and non-T2D: 0.80 [0.75 - 0.85] vs. 0.83 [0.80 - 0.87]. In T2D, a head to head comparison (AUROC; 95% CI) showed that NIS4 [0.80; 0.75-0.85] significantly outperformed all other tests for the identification of “at-risk” NASH: APRI [0.74; 0.68-0.80], FIB4 [0.70; 0.64-0.77], ELF [0.70; 0.64-0.77], FibroTest [0.68; 0.61-0.74], and NFS [0.60; 0.52-0.67].
Conclusion: Amongst T2D patients with suspected NASH, the prevalence of “at-risk” NASH is high. This highlights the need for active surveillance amongst T2D patients. For that purpose, NIS4 outperforms other tests and is a promising non-invasive tool to identify and potentially track T2D patients who need clinical intervention to manage their disease.

Disclosure
B. Staels: None. V. Ratziu: Other Relationship; Self; Gilead Sciences, Inc. S. Francque: Consultant; Self; GENFIT. S.A. Harrison: Advisory Panel; Self; Gilead Sciences, Inc. P. Bedossa: Consultant; Self; GENFIT. A. Roudot: Employee; Self; GENFIT. Z. Majd: Employee; Self; GENFIT. J. Brozek: Employee; Self; GENFIT. F. Ben-Sudrik: Employee; Self; GENFIT. P. Birman: Employee; Self; GENFIT. D.W. Hum: Employee; Self; GENFIT. S. Hosmane: Employee; Self; GENFIT. P. Chaumat: Employee; Self; GENFIT. R. Hanf: Employee; Self; GENFIT. B. Cariou: Board Member; Self; Novo Nordisk A/S, Regeneron Pharmaceuticals. Consultant; Self; GENFIT, Sanofi-Aventis. Research Support; Self; Amgen Inc., Pfizer Inc. Speaker’s Bureau; Self; Abbott, Akcea Therapeutics, Merck Sharp & Dohme Corp. A. Sanyal: Consultant; Self; Ardelyx, Boehringer Ingelheim Pharmaceuticals, Inc., Exhalenz, Gilead Sciences, Inc., Hemoshear, Intercept Pharmaceuticals, Inc., Lilly, Mallinckrodt Pharmaceuticals, Nimbus Therapeutics, Nitto Denko, Novartis Pharmaceuticals Corporation, Pfizer Inc. Employee; Self; Sanyal Bio. Research Support; Self; Bristol-Myers Squibb Company, Conatus Pharmaceuticals Inc., Echosens, Galectin Therapeutics Inc., Immuron Ltd, Merck & Co., Inc., Salix Pharmaceuticals, Sequanna. Stock/Shareholder; Self; Akarna Therapeutics, GENFIT, Natural Shield, NewCo LLC, Tiziana. Other Relationship; Self; Elsevier, UpToDate.