E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Nonalcoholic steatohepatitis (NASH) |
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E.1.1.1 | Medical condition in easily understood language |
Nonalcoholic steatohepatitis (NASH) is a condition in which fat builds up in your liver. NASH causes inflammation, damage and scarring of the liver. |
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E.1.1.2 | Therapeutic area | Diseases [C] - Digestive System Diseases [C06] |
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 24.1 |
E.1.2 | Level | PT |
E.1.2 | Classification code | 10053219 |
E.1.2 | Term | Non-alcoholic steatohepatitis |
E.1.2 | System Organ Class | 10019805 - Hepatobiliary disorders |
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E.1.3 | Condition being studied is a rare disease | No |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
To evaluate whether GSK4532990 can cause one (or both) of fibrosis regression and/or NASH resolution in participants with NASH and bridging (F3) fibrosis.
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E.2.2 | Secondary objectives of the trial |
To evaluate GSK4532990 treatment effects on blood-based and imaging markers of liver fat, liver injury, and liver fibrosis in participants with NASH and bridging (F3) fibrosis.
To assess the safety and tolerability of GSK4532990 in participants with NASH and bridging (F3) fibrosis.
To evaluate the pharmacokinetics of GSK4532990. |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
1. Participant must be 18 to 75 years of age inclusive, at the time of screening. (Participants in South Korea must be ≥19 years of age.) 2. Body Mass Index (BMI) ≥25 kg/m2 (all ethnic origins) except for Asian participants who qualify for the study with BMI ≥23 kg/m2 at Screening. 3. A 12-lead ECG at Screening that, in the opinion of the Investigator, has no abnormalities that compromise participant’s safety in this study. 4. In the opinion of the investigator, there are features of metabolic syndrome and NAFLD is the most likely cause of liver disease. 5. The liver biopsy must show a NAS ≥4 with at least 1 point each in steatosis, inflammation, and ballooning and Fibrosis 3 using NASH CRN Scoring System, confirmed by central scoring. Either of the following are acceptable: a. A historical biopsy within 6 months of Screening 1 will be accepted as the baseline biopsy if confirmed by central scoring and if participant has not lost ≥5% body weight since the biopsy was performed. Note: See SoA footnote A and section 8.1.1 for further detail. b. If a qualifying historical liver biopsy has not been performed, the following criteria must be met prior to proceeding to biopsy. The study participant may undergo a liver biopsy once all the criteria in one of the options have been satisfied provided in protocol. 6. Capable of giving signed informed consent prior to the performance of any study-specific procedures, as described in Section 10.1, which includes compliance with the requirements and restrictions listed in the informed consent form (ICF) and in this protocol. 7. Able and willing to comply with all study assessments, including a liver biopsy at Week 52 and testing for HSD17B13 and PNPLA3 genotype, and adhere to the protocol schedule of activities.
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E.4 | Principal exclusion criteria |
1. Women of child-bearing potential (defined in Section 10.4.1). 2. Cirrhosis (based on screening biopsy or historical biopsy showing definitive cirrhosis). 3. United Network for Organ Sharing (UNOS) post-2016 Model for End-Stage Liver Disease (MELD) score ≥12. (Based on central laboratory measurement; 1 repeat test is allowed). 4. Prior history of decompensated liver disease, including ascites, hepatic encephalopathy, or variceal bleeding. 5. Platelets <140,000/μL, INR ≥1.3 (unless due to anticoagulant), or albumin <3.5g/dL. (Based on central laboratory measurement; 1 repeat test is allowed). 6. ALT or AST ≥ 5x ULN or ≥ 250 U/L (Based on central laboratory measurement; 1 repeat test is allowed). 7. ALP ≥ 2x ULN or ≥ 250 U/L (Based on central laboratory measurement; 1 repeat test is allowed). 8. Fib4 ≥2.67 (Based on central laboratory measurement; 1 repeat test is allowed) AND FibroScan® LSM ≥ 20kPa 9. Any history of kidney disease or kidney impairment defined by current hemodialysis/hemofiltration or an estimated glomerular filtration rate (eGFR) <60 mL/min/1.73 m2 (using Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equation). (Based on central laboratory measurements; 1 repeat test is allowed) 10. Urinary albumin creatinine ratio > 500 mg/g 11. Known weight loss of ≥5% within 3 months prior to Screening. 12. Chronic hepatitis B virus (HBV) infection, confirmed by positive hepatitis B surface antigen [HBsAg] serology. (Based on central laboratory measurements). 13. Chronic hepatitis C virus (HCV) infection, confirmed by positive HCV antibody serology and detectable HCV RNA. Participants who are anti-HCV positive, but HCV RNA negative are eligible providing treatment for HCV infection occurred 2 years or more prior to screening (Based on central laboratory measurements). 14. Other causes of liver disease including, but not limited to, alcohol-related liver disease, autoimmune disorders (e.g., primary biliary cholangitis, primary sclerosing cholangitis, and autoimmune hepatitis), drug-induced hepatotoxicity, Wilson disease, hemochromatosis, and alpha-1-antitryspin deficiency, based on medical history, blood tests including autoantibody serology and serum immunoglobulins and/or the liver histology reported by the central lab. 15. Current alcohol consumption ≥14 standard drinks (24 units, 196 g ethanol) per week for females or ≥21 standard drinks (37 units, 294g ethanol) per week for males. One standard drink is equivalent to: 12 US fluid ounces (oz) beer (5% alcohol); 5 oz of wine (12% alcohol), or 1.5 oz of 80 proof spirits (40% alcohol). 16. History of liver transplantation. 17. Current, or history of hepatocellular carcinoma (HCC). 18. HIV infection or seropositivity for anti-HIV antibody (central laboratory measurements).
For further information please refer to the study Protocol Amendment 1.
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E.5 End points |
E.5.1 | Primary end point(s) |
• Achieving ≥ 1 stage improvement in histological fibrosis (Clinical Research Network [CRN] scoring) with no worsening of NASH (defined as no increase in the NAFLD Activity Score [NAS] for steatosis, ballooning, or inflammation) at 52 weeks. • Achieving NASH resolution with no worsening of fibrosis (defined as no increase in CRN fibrosis score) at 52 weeks. Resolution of NASH is defined as a ballooning score of 0 and an inflammation score of 0-1.
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
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E.5.2 | Secondary end point(s) |
• Change from baseline in Pro-C3 at 24 weeks and 52 weeks. • Change from baseline in liver fat using MRI-PDFF at 24 weeks and 52 weeks. • Change from baseline in liver stiffness measurement (LSM) by vibration-controlled transient elastography (VCTE™) at 24 weeks and 52 weeks. • Change from baseline in Enhanced Liver Fibrosis (ELF™) Score and its individual components (HA, PIIINP, TIMP-1) at 24 weeks and 52 weeks. • Achieving ≥30% reduction from baseline in MRI-PDFF at 24 weeks. • Achieving ≥30% reduction from baseline in MRI-PDFF at 52 weeks. • Change from baseline in ALT, AST and GGT at 24 weeks and 52 weeks.
Clinical assessments including, but not limited to: • Occurrence of AEs and SAEs, • Change from baseline in vital signs at each Visit, • Change from baseline in key laboratory measurements at each Visit.
• In a subset of participants with intensive PK sampling: plasma pharmacokinetic (PK) parameters of GSK4532990 including area under the concentration-time curve from time zero (pre-dose) to the last quantifiable concentration (AUC0-t), maximum observed concentration (Cmax), time of occurrence of Cmax (tmax), apparent terminal phase half-life (t1/2), apparent clearance (CL/F), and apparent terminal phase volume of distribution (Vz/F). • Occurrence of anti-drug antibodies (ADA) to GSK4532990.
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
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E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | No |
E.6.2 | Prophylaxis | No |
E.6.3 | Therapy | No |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | Yes |
E.6.6 | Pharmacokinetic | Yes |
E.6.7 | Pharmacodynamic | No |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | No |
E.6.10 | Pharmacogenetic | No |
E.6.11 | Pharmacogenomic | No |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | No |
E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | No |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | No |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | Yes |
E.7.3 | Therapeutic confirmatory (Phase III) | No |
E.7.4 | Therapeutic use (Phase IV) | No |
E.8 Design of the trial |
E.8.1 | Controlled | Yes |
E.8.1.1 | Randomised | Yes |
E.8.1.2 | Open | No |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | Yes |
E.8.1.5 | Parallel group | Yes |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | No |
E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | No |
E.8.2.2 | Placebo | Yes |
E.8.2.3 | Other | No |
E.8.2.4 | Number of treatment arms in the trial | 3 |
E.8.3 |
The trial involves single site in the Member State concerned
| No |
E.8.4 | The trial involves multiple sites in the Member State concerned | Yes |
E.8.4.1 | Number of sites anticipated in Member State concerned | 5 |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 26 |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | Yes |
E.8.6.2 | Trial being conducted completely outside of the EEA | No |
E.8.6.3 | If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned |
Argentina |
Canada |
India |
Japan |
Korea, Republic of |
Mexico |
United States |
France |
Spain |
Greece |
Italy |
Belgium |
Turkey |
United Kingdom |
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E.8.7 | Trial has a data monitoring committee | No |
E.8.8 |
Definition of the end of the trial and justification where it is not the last
visit of the last subject undergoing the trial
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E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | 2 |
E.8.9.1 | In the Member State concerned months | 1 |
E.8.9.1 | In the Member State concerned days | 26 |
E.8.9.2 | In all countries concerned by the trial years | 2 |
E.8.9.2 | In all countries concerned by the trial months | 4 |
E.8.9.2 | In all countries concerned by the trial days | 4 |