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Baer AN, Gottenberg JE, St Clair EW, Sumida T, Takeuchi T, Seror R, Foulks G, Nys M, Mukherjee S, Wong R, Ray N, Bootsma H. Efficacy and safety of abatacept in active primary Sjögren's syndrome: results of a phase III, randomised, placebo-controlled trial. Ann Rheum Dis 2021; 80:339-348. [PMID: 33168545 PMCID: PMC7892395 DOI: 10.1136/annrheumdis-2020-218599] [Citation(s) in RCA: 56] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 09/14/2020] [Accepted: 09/28/2020] [Indexed: 12/18/2022]
Abstract
OBJECTIVES To evaluate efficacy and safety of abatacept in adults with active primary Sjögren's syndrome (pSS) in a phase III, randomised, double-blind, placebo-controlled trial. METHODS Eligible patients (moderate-to-severe pSS [2016 ACR/European League Against Rheumatism (EULAR) criteria], EULAR Sjögren's Syndrome Disease Activity Index [ESSDAI] ≥5, anti-SS-related antigen A/anti-Ro antibody positive) received weekly subcutaneous abatacept 125 mg or placebo for 169 days followed by an open-label extension to day 365. Primary endpoint was mean change from baseline in ESSDAI at day 169. Key secondary endpoints were mean change from baseline in EULAR Sjögren's Syndrome Patient Reported Index (ESSPRI) and stimulated whole salivary flow (SWSF) at day 169. Other secondary clinical endpoints included glandular functions and patient-reported outcomes. Selected biomarkers and immune cell phenotypes were examined. Safety was monitored. RESULTS Of 187 patients randomised, 168 completed double-blind period and 165 continued into open-label period. Mean (SD) baseline ESSDAI and ESSPRI total scores were 9.4 (4.3) and 6.5 (2.0), respectively. Statistical significance was not reached for primary (ESSDAI -3.2 abatacept vs -3.7 placebo, p=0.442) or key secondary endpoints (ESSPRI, p=0.337; SWSF, p=0.584). No clinical benefit of abatacept over placebo at day 169 was seen with other clinical and PRO endpoints. Relative to baseline, abatacept was associated with significant differences vs placebo in some disease-relevant biomarkers (including IgG, IgA, IgM-rheumatoid factor) and pathogenic cell subpopulations (post hoc analyses). No new safety signals were identified. CONCLUSIONS Abatacept treatment did not result in significant clinical efficacy compared with placebo in patients with moderate-to-severe pSS, despite evidence of biological activity.
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Affiliation(s)
- Alan N Baer
- Division of Rheumatology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Jacques-Eric Gottenberg
- Department of Rheumatology, Strasbourg University Hospitals, National Reference Center for Rare Systemic Autoimmune Diseases, IBMC, CNRS, UPR3572, Strasbourg, France
| | - E William St Clair
- Department of Medicine, Duke University Medical Center, Durham, North Carolina, USA
| | - Takayuki Sumida
- Department of Internal Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Tsutomu Takeuchi
- Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Raphaèle Seror
- Department of Rheumatology and National Reference Center for Sjögren Syndrome and Rare Autoimmune Diseases, AP-HP Université Paris-Saclay, INSERM UMR1184, Le Kremlin Bicêtre, Paris, France
| | - Gary Foulks
- Department of Ophthalmology and Visual Sciences, University of Louisville School of Medicine, Louisville, Kentucky, USA
| | - Marleen Nys
- Global Biometric Sciences, Bristol Myers Squibb, Braine L'Alleud, Belgium
| | - Sumanta Mukherjee
- Innovative Medicines and Development - Clinical Biomarkers, Bristol Myers Squibb Company, Princeton, New Jersey, USA
| | - Robert Wong
- Immunology and Fibrosis, Bristol Myers Squibb Company, Princeton, New Jersey, USA
| | - Neelanjana Ray
- Global Drug Development - Immunology, Bristol Myers Squibb Company, Princeton, New Jersey, USA
| | - Hendrika Bootsma
- Department of Rheumatology and Clinical Immunology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
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