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29 Jul 2020
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Diagnosing, monitoring NASH, fibrosis: Will noninvasive tools work?

Audrey Abella
10 Sep 2020

Interim results of REGENERATE* trial highlight the ability of experimental noninvasive tests to evaluate treatment response in adults with NASH** and advanced liver fibrosis who are receiving obeticholic acid (OCA).

The interim analysis showed that OCA improved fibrosis in patients with NASH. “[However,] treatment response was evaluated using liver biopsy,” said Dr Jerome Bour from the Angers University Hospital in France, who presented the findings at DILC 2020.

While biopsy remains the gold standard for diagnosing NASH, [World J Gastroenterol 2014;20:475-485] it is “costly, invasive, and [risky] if used in routine clinical practice to monitor patients,” noted Boursier. Noninvasive tests may reduce or eliminate the need for biopsy to diagnose patients and monitor treatment responses, he said.

New biomarker indices were developed to improve clinicians’ ability to foretell NASH and fibrosis. The FibroMeter (FM) is designed to predict presence of significant fibrosis***, while FM-VCTE# uses the same biomarkers as FM (excluding urea), including liver stiffness. [United Eur Gastroenterol J 2019;7:1113-1123; Eur J Gastroenterol Hepatol 2015;27:1149-1153] The FibroScan-AST (FAST) score is designed to identify patients with NASH, NAFLD## Activity Score (NAS) 4, and fibrosis 2. [Lancet Gastroenterol Hepatol 2020;5:362-373]

“These three tests have shown promising results in [diagnosing] patients with NASH and fibrosis,” said Boursier.

The team sought to evaluate these tests using available baseline data (n=931) from the initial cohort (n=2,480). Participants had biopsy-confirmed NASH, NAS ≥4, and stage 2/3 fibrosis, and were randomized 1:1:1 to receive OCA 10 or 25 mg, or placebo. [DILC 2020, abstract AS075]

FM reflected significant improvements with both OCA doses vs placebo at month 6 (p<0.0001 for both), which were sustained through month 18 (p<0.001 [10 mg] and p<0.0001 [25 mg]).

With FM-VCTE, significant effects were observed at month 18 with both OCA doses (p<0.001 [10 mg] and p<0.01 [25 mg]) vs placebo.

FAST identified a more pronounced, sustained response with OCA 25 mg vs OCA 10 mg and placebo (p<0.001 from month 6 through 18). FAST showed that OCA recipients were more likely to improve and less likely to worsen vs those on placebo. “[This suggests that] OCA treatment was associated with favourable shifts in FAST score. FAST seems to be an interesting biomarker [as] it includes three### biomarkers that are sensitive to histologic response,” said Boursier.

These results demonstrate the ability of these tests to reflect early, sustained improvements from OCA use, which correlate with previously reported histologic improvements. “FM and FM-VCTE [improvements] are consistent with OCA’s antifibrotic effect, while improvements in FAST are consistent with [the] amelioration of key histologic features of NASH, including both inflammation and fibrosis,” said Boursier.

However, the results are based on surrogate endpoints, he stressed, noting that the study is ongoing to further validate the clinical benefit of OCA in this setting, as well as the performance of these tests. “[W]e need to evaluate which of the component biomarkers are markers of response because [our hope is] that these tests will be ‘magic bullets’ [that could] diagnose which patient needs to be treated,” said Boursier.

 

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Most Read Articles
29 Jul 2020
Adjunctive perampanel appears to be safe and effective for long-term treatment of patients with tonic‐clonic seizures, according to a posthoc analysis.
11 Aug 2020
During the Allergic Rhinitis (AR) Boot Camp held in conjunction with the Bayer Pharmacist Congress 2020, Professor Dr Baharudin Abdullah discussed the management of AR in the primary care setting and the importance of using patient profiles to guide the choice of antihistamines.
Elaine Soliven, 6 days ago
Adding mepolizumab to standard of care treatment significantly reduces nasal polyp size and obstruction in adults with chronic rhinosinusitis with nasal polyps (CRSwNP), according to the SYNAPSE* study presented at ERS 2020.
Jairia Dela Cruz, 18 Feb 2020
Administering daily oral doses of adjunctive perampanel is safe and well tolerated in the treatment of young and older children with focal seizures or generalized tonic‐clonic seizures, in addition to yielding about 40–70 percent reduction in seizure frequency, according to data from the open-label 311 Core Study.