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Ludbrook VJ, Budd DC, Thorn K, Tompson D, Votta BJ, Walker L, Lee A, Chen X, Peppercorn A, Loo WJ. Inhibition of Receptor-Interacting Protein Kinase 1 in Chronic Plaque Psoriasis: A Multicenter, Randomized, Double-Blind, Placebo-Controlled Study. Dermatol Ther (Heidelb) 2024; 14:489-504. [PMID: 38372938 PMCID: PMC10890982 DOI: 10.1007/s13555-024-01097-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Accepted: 01/05/2024] [Indexed: 02/20/2024] Open
Abstract
INTRODUCTION Receptor-interacting protein kinase 1 (RIPK1), a key mediator of inflammation through necroptosis and proinflammatory cytokine production, may play a role in the pathogenesis of immune-mediated inflammatory diseases such as chronic plaque psoriasis. An experimental medicine study of RIPK1 inhibition with GSK2982772 immediate-release formulation at doses up to 60 mg three times daily in mild to moderate plaque psoriasis indicated that efficacy may be improved with higher trough concentrations of GSK2982772. METHODS This multicenter, randomized, double-blind, placebo-controlled, repeat-dose study (NCT04316585) assessed the efficacy, safety, pharmacokinetics, and pharmacodynamics of 960 mg GSK2982772 (once-daily modified-release formulation) in patients with moderate to severe plaque psoriasis. Twenty-nine patients were randomized 2:1 to GSK2982772 (N = 19) or placebo (N = 10) for 12 weeks. RESULTS GSK2982772 was well tolerated with trough concentrations greater than tenfold higher than the previous phase 1 study with immediate release. Despite near complete RIPK1 target engagement in blood and modest reduction in circulating inflammatory cytokines, the proportion of patients achieving 75% improvement from baseline in Psoriasis Area Severity Index score at week 12 was similar between GSK2982772 and placebo (posterior median 1.8% vs 4.9%, respectively), with an estimated median treatment difference of - 2.3%. This analysis incorporated historical placebo data through the use of an informative prior distribution on the placebo arm. Week 4 changes in skin biopsy gene expression suggested sufficient local drug exposure to elicit a pharmacodynamic response. CONCLUSION Administration of the RIPK1 inhibitor GSK2982772 to patients with moderate to severe plaque psoriasis did not translate into meaningful clinical improvements.
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Affiliation(s)
- Valerie J Ludbrook
- Clinical Pharmacology and Experimental Medicine, GSK, Gunnels Wood Rd, Stevenage, Hertfordshire, SG1 2NY, UK.
| | - David C Budd
- Medicines Research Centre, GSK, Stevenage, Hertfordshire, UK
| | - Katie Thorn
- Biostatistics, GSK, Stevenage, Hertfordshire, UK
| | - Debra Tompson
- Clinical Pharmacology Modelling and Simulation, GSK, Stevenage, Hertfordshire, UK
| | | | - Lucy Walker
- Clinical Pharmacology and Experimental Medicine, GSK, Gunnels Wood Rd, Stevenage, Hertfordshire, SG1 2NY, UK
- Global Safety, GSK, GSK House, Brentford, UK
| | - Amy Lee
- Rx Global Clinical Delivery, GSK, Mississauga, ON, Canada
| | - Xin Chen
- Rx Global Clinical Delivery, GSK, Mississauga, ON, Canada
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Weisel K, Berger S, Thorn K, Taylor PC, Peterfy C, Siddall H, Tompson D, Wang S, Quattrocchi E, Burriss SW, Walter J, Tak PP. A randomized, placebo-controlled experimental medicine study of RIPK1 inhibitor GSK2982772 in patients with moderate to severe rheumatoid arthritis. Arthritis Res Ther 2021; 23:85. [PMID: 33726834 PMCID: PMC7962407 DOI: 10.1186/s13075-021-02468-0] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 02/26/2021] [Indexed: 12/14/2022] Open
Abstract
Background Receptor-interacting protein kinase 1 (RIPK1) is a key mediator of inflammation through cell death and proinflammatory cytokine production. This multicenter, randomized, double-blind (sponsor-unblinded), placebo-controlled, experimental medicine study evaluated the safety, pharmacokinetics (PK), and preliminary efficacy of GSK2982772, a RIPK1 inhibitor, in moderate to severe rheumatoid arthritis (RA). Methods Patients with moderate to severe RA who had received ≥12 weeks’ stable-dose conventional synthetic disease-modifying antirheumatic drug (csDMARD) therapy were randomized (2:1) to GSK2982772 60 mg or placebo orally 2 or 3 times daily for 84 days. Safety, PK, disease activity, joint damage, and pharmacodynamic (PD) biomarkers were assessed at days 43 and 85. Results A total of 52 patients were randomized (placebo, 18; GSK2982772, 34). Adverse events (AEs) were reported in 13 (72%) in patients in the placebo group (n = 3 b.i.d; n = 10 t.i.d.) and 20 (61%) in the GSK2982772 group (n = 3 b.i.d; n = 17 t.i.d.). All treatment-related AEs were mild/moderate, except one severe case of alopecia areata at day 49 and retinal vein thrombosis at day 66 (which led to withdrawal from the study) in patients receiving GSK2982772 t.i.d. Disease Activity Score in 28 Joints–C-reactive protein (DAS28-CRP) scores, ACR20/50/70 response, and rates of low disease activity and remission were similar between placebo and GSK2982772 arms. Conclusions These results suggest that inhibition of RIPK1 activity at the GSK2982772 exposure levels evaluated do not translate into meaningful clinical improvement of RA. Trial registration ClinicalTrials.gov Identifier: NCT02858492. Registered 8 August 2016. Supplementary Information The online version contains supplementary material available at 10.1186/s13075-021-02468-0.
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Affiliation(s)
| | | | - Katie Thorn
- GlaxoSmithKline, Stockley Park, Uxbridge, UK
| | - Peter C Taylor
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
| | | | - Hilary Siddall
- GlaxoSmithKline Medicine Research Center, Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2NY, UK.
| | - Debra Tompson
- GlaxoSmithKline Medicine Research Center, Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2NY, UK
| | | | | | | | - Jochen Walter
- Rheumatologische Schwerpunktpraxis, Rendsburg, Germany
| | - Paul Peter Tak
- GlaxoSmithKline Medicine Research Center, Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2NY, UK.,Present address: Cambridge University, Cambridge, UK.,Present address: Ghent University, Ghent, Belgium
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Girschik J, Thorn K, Beer TW, Heenan PJ, Fritschi L. Merkel cell carcinoma in Western Australia: a population-based study of incidence and survival. Br J Dermatol 2011; 165:1051-7. [PMID: 21711338 DOI: 10.1111/j.1365-2133.2011.10493.x] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND Merkel cell carcinoma (MCC) is an uncommon but aggressive cutaneous skin cancer. Even with the appropriate treatment, MCC is prone to recurrence, and metastases are common. Exposure to ultraviolet radiation has been suggested as contributing towards the development of MCC. MCC has not been extensively investigated in Australia, even though Australia has the highest incidence of sun-related cancers in the world. OBJECTIVES To describe the demographics and determine trends of incidence and survival of MCC cases in Western Australia (WA). METHODS All reported invasive cases of MCC incident between 1 January 1993 and 31 December 2007 were extracted from the WA Cancer Registry. Age-adjusted incidence rates for MCC were calculated using direct standardization to the U.S. standard 2000 population. Cause-specific survival was investigated using Kaplan-Meier and Cox proportional hazards analysis. results: Two hundred and fifteen cases were confirmed by pathological review as being definite cases of MCC. Patients were mainly males (65%) and elderly (median age 77 years). Standardized age-adjusted incidence rates were higher in men (1·0/100,000) than in women (0·63/100,000) and higher in older ages (15·5/100,000 in the 85+year age group) than younger ages (0·1/100,000 in the 30-34 year age group). Five-year cause-specific survival was 64%. CONCLUSIONS Incidence of MCC in WA is the highest reported in the literature. In addition, MCC has worse survival than melanoma. The high rates and demographic and anatomical distribution are consistent with sun exposure playing a causal role.
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Affiliation(s)
- J Girschik
- Western Australian Institute for Medical Research, University of Western Australia, Nedlands, WA 6003, Australia.
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Vuorenoja K, Jalava J, Lindholm L, Tähtinen PA, Laine MK, Thorn K, Ruohola A. Detection of Streptococcus pneumoniae carriage by the Binax NOW test with nasal and nasopharyngeal swabs in young children. Eur J Clin Microbiol Infect Dis 2011; 31:703-6. [PMID: 21800217 DOI: 10.1007/s10096-011-1361-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2011] [Accepted: 07/14/2011] [Indexed: 11/25/2022]
Abstract
The rapid detection of carriage of Streptococcus pneumoniae could assist in the management of pneumococcal infection, such as acute otitis media. We evaluated the reliability of the Binax NOW test in the exclusion and detection of pneumococcal carriage by nasal samples from 139 children and using nasopharyngeal samples from 250 children (aged 6-35 months) with respiratory infection with or without acute otitis media. The Binax NOW test results were compared with culture-based detection of carriage of S. pneumoniae. The Binax NOW test from the nasal samples had a sensitivity of 95%, a specificity of 78%, and the positive and negative predictive values were 83 and 93%, respectively; and for the nasopharyngeal samples the corresponding numbers were 88%, 95%, 96%, and 87%. When rapid knowledge of the carriage status of S. pneumoniae is needed, the Binax NOW test is a reliable method for the exclusion of carriage using nasal sampling, and in the detection of carriage using nasopharyngeal sampling.
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Affiliation(s)
- K Vuorenoja
- Antimicrobial Resistance Unit, National Institute for Health and Welfare, Kiinamyllynkatu 13, 20520, Turku, Finland.
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Roberts A, Thorn K, Michna ML, Dragomir N, Farrell P, Baxter G. Determination of bending-induced strain in optical fibers by use of quantitative phase imaging. Opt Lett 2002; 27:86-88. [PMID: 18007720 DOI: 10.1364/ol.27.000086] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Quantitative phase microscopy with polarized light has been used to determine the change in refractive index introduced into an optical fiber when the fiber is bent through a constant radius of curvature. By obtaining phase images for two orthogonal directions of the polarization of the incident light, one can infer the induced axial strain profile within the fiber. Radii of curvature from 1 to 8 cm were considered, and in each case excellent agreement, within lambda/100, was obtained between experimental results and theory.
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Thorn K. Hepatitis C: the lurking dragon. Case Manager 1999; 10:55-62. [PMID: 11094970 DOI: 10.1016/s1061-9259(99)80133-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Hepatitis C virus (HCV) is the most common chronic blood-borne infection in the United States. An estimated 3.9 million Americans (1.4%) are infected with HCV. The 10th leading cause of death in U.S. adults is chronic liver disease (CLD), which accounts for 25,000 deaths annually. Approximately 40% of all CLD is related to HCV, causing 8000 to 10,000 deaths annually. In addition, approximately 60% of people with HIV are believed to be coinfected with HCV, which hastens their progression to AIDS.
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Affiliation(s)
- K Thorn
- Thorn and Associates, Canoga Park, Calif., USA
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Thorn K. Camp Heartland. Listen to my heart speak. Case Manager 1999; 10:38-42. [PMID: 11051901 DOI: 10.1016/s1061-9259(99)80082-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Affiliation(s)
- K Thorn
- Thorn and Associates, Canoga Park, Calif., USA
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Affiliation(s)
- T M Lohman
- Department of Biochemistry and Molecular Biophysics, Washington University School of Medicine, St. Louis, Missouri 63122, USA
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Thorn K, Cerrato RM, Rivers ML. Elemental Distributions in Marine Bivalve Shells as Measured by Synchrotron X-Ray Fluorescence. Biol Bull 1995; 188:57-67. [PMID: 29281305 DOI: 10.2307/1542067] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The concentrations of elements from Mn to Pb in the shells of Mercenaria mercenaria, Mya arenaria, and Argopecten irradians were measured using synchrotron x-ray fluorescence. This technique provides sensitivity as low as 1 ppm and resolution of 8 {mu}m. Elements were heterogeneously distributed, both on a large scale (several millimeters) and on a small scale (tens of micrometers). Large-scale variations were observed in the compositions of shell layers and in seasonal variations in strontium concentration. Small-scale changes in composition included elevated iron levels at the boundary between the prismatic and inner homogeneous shell of the hard clam, Mercenaria mercenaria. Variations in strontium concentrations were seen over time spans of several months, suggesting that this technique can be used to determine historical water temperatures. Elemental maps with a resolution of less than 10 {mu}m were produced.
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Levine AJ, Chang A, Dittmer D, Notterman DA, Silver A, Thorn K, Welsh D, Wu M. The p53 tumor suppressor gene. J Lab Clin Med 1994; 123:817-23. [PMID: 8201258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- A J Levine
- Department of Molecular Biology, Princeton University, NJ 98544-1014
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Thorn K. Infusion therapy options. Contin Care 1994; 13:18-9, 26. [PMID: 10146728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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Thorn K. Truck infusion therapy. Contin Care 1993; 12:37, 40. [PMID: 10150110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Affiliation(s)
- K Thorn
- Thorn and Associates, Canoga Park, Calif
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Thorn K. Pumped up. Contin Care 1991; 10:19; 26. [PMID: 10148145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Affiliation(s)
- K Thorn
- Thorn and Associates, Canoga Park, Calif
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