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Anti-TNF combination therapy in inflammatory bowel disease: de novo or selective?
Fabio S Macaluso1, Ambrogio Orlando2
1Unit of Inflammatory Bowel Disease, Department of Internal Medicine, Villa Sofia-Cervello Hospital, Palermo, Italy - fsmacaluso@gmail.com.
Abstract:
Anti-TNFs still remain the backbone of advanced therapies in inflammatory bowel diseases, but their efficacy is not universal and tends to diminish over time. As a consequence, there is the need for optimization of these treatments, and the use of combination therapy - i.e. an anti-TNF plus an immunosuppressant - is one of the main strategies. The rationale for this approach lies in the evidence that the immunosuppressant reduces the formation of antibodies directed against the anti-TNF, thus avoiding the reduction or elimination of circulating drug levels, and in the combination of the therapeutic effect of two drugs. Nowadays, two different combination therapies should be distinguished. In the "de novo" combination therapy, the anti-TNF is used in combination with an immunosuppressant from the beginning of the treatment, in order to prevent the formation of anti-drug antibodies. In the "selective" combination therapy, the immunosuppressant is added at a later time in patients who experience a loss of response during anti-TNF monotherapy due to the development of anti-drug antibodies. The purpose of this review is to summarize the available evidence on both de novo and selective combination therapy. In addition, we will express our point of view on the choice between these two different treatment modalities.
Insights
Combination therapy with anti-tumor necrosis factor (anti-TNF) agents and immunosuppressants optimizes inflammatory bowel disease treatment. This review examines "de novo" and "selective" combination strategies to improve long-term efficacy.
Area of Science:
- Gastroenterology
- Immunology
- Pharmacology
Background:
- Anti-tumor necrosis factor (anti-TNF) therapies are foundational for inflammatory bowel diseases (IBD).
- Treatment efficacy can be limited by universal non-response and diminishing effectiveness over time.
- Combination therapy with immunosuppressants is a key strategy to enhance anti-TNF treatment outcomes.
Purpose of the Study:
- To review current evidence on "de novo" and "selective" anti-TNF combination therapies in IBD.
- To compare the efficacy and rationale of these two distinct combination approaches.
- To provide expert opinion on selecting between de novo and selective combination strategies.
Main Methods:
- Literature review of studies investigating anti-TNF and immunosuppressant combination therapies.
- Analysis of data on anti-drug antibody formation and clinical response.
- Comparative assessment of "de novo" versus "selective" combination therapy strategies.
Main Results:
- Immunosuppressants mitigate anti-drug antibody formation, preserving anti-TNF drug levels and efficacy.
- "De novo" combination therapy aims to prevent antibody development from treatment initiation.
- "Selective" combination therapy introduces immunosuppressants upon loss of response due to antibodies.
Conclusions:
- Combination therapy is crucial for optimizing anti-TNF treatment in IBD.
- Both "de novo" and "selective" approaches offer distinct advantages in managing IBD.
- Strategic selection between these combination therapies is vital for sustained patient response.
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