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CD11c as a Transcriptional Biomarker to Predict Response to Anti‐TNF Monotherapy With Adalimumab in Patients With Rheumatoid Arthritis
Author(s) -
Stuhlmüller B,
Häupl T,
Hernandez M M,
Grützkau A,
Kuban RJ,
Tandon N,
Voss J W,
Salfeld J,
Kinne R W,
Burmester G R
Publication year - 2010
Publication title -
clinical pharmacology and therapeutics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.941
H-Index - 188
eISSN - 1532-6535
pISSN - 0009-9236
DOI - 10.1038/clpt.2009.244
Subject(s) - adalimumab , medicine , rheumatoid arthritis , methotrexate , tumor necrosis factor alpha , biomarker , rheumatology , tnf inhibitor , golimumab , oncology , arthritis , immunology , biology , biochemistry
We performed transcription profiling using monocytes to identify predictive markers of response to anti–tumor necrosis factor (anti‐TNF) therapy in patients with rheumatoid arthritis (RA). Several potential predictors of response were identified, including CD11c. Validation in samples from independent cohorts (total of n = 27 patients) using reverse transcription–PCR confirmed increased expression of CD11c in responders to adalimumab (100% sensitivity; 91.7% specificity, power 99.6%; α = 0.01). Pretherapy CD11c levels significantly correlated with the response criteria as defined by the American College of Rheumatology (ACR) ( r = 0.656, P < 0.0001). However, CD11c was neither predictive of response to methotrexate (MTX) alone ( n = 34) nor to MTX in combination with adalimumab ( n = 16). Clinical responders revealed a reset to a normal expression pattern of resident/inflammatory monocyte markers, which was absent in nonresponders. Therefore, an analysis of key cell types identifies potentially predictive biomarkers that may help to restrict the use of adalimumab to therapy responders. Larger studies, including studies of monotherapy with other drugs, are now needed to confirm and validate the specificity of CD11c for anti‐TNF biologics. Clinical Pharmacology & Therapeutics (2010) 87 3, 311–321. doi: 10.1038/clpt.2009.244