**Question:** The following patient on Methotrexate, steroids and NSAIDs for past 4 months has had no retardation of disease progression. What is the next rational step in management?

A. Increase the dose of medications
B. Switch to a different class of immunosuppressive drugs
C. Add biologic therapy to the existing treatment regimen
D. Withdraw the current medications and wait for disease activity

**Correct Answer:** C. Add biologic therapy to the existing treatment regimen

**Core Concept:**
Methotrexate, steroids, and nonsteroidal anti-inflammatory drugs (NSAIDs) are commonly used immunosuppressive drugs in the management of autoimmune diseases like rheumatoid arthritis. The goal of treatment is to achieve disease remission or at least significant disease control. If the disease progression is not retarded despite using these medications, it is essential to consider escalating the immunosuppressive therapy.

**Why the Correct Answer is Right:**
The correct answer (C) suggests adding a biologic therapy to the existing treatment regimen. Biologics are a class of immunosuppressive drugs that target specific components of the immune system involved in the pathogenesis of the disease. By incorporating biologics, we aim to further inhibit the immune system's overactivity, potentially leading to improved disease control.

**Why Each Wrong Option is Incorrect:**
A. Increasing the dose of medications (A) may not necessarily lead to better disease control, as the maximum therapeutic window for these drugs has been crossed.
B. Switching to a different class of immunosuppressive drugs (B) may not provide superior disease control compared to the current regimen, as the patient has already been on three different immunosuppressive agents.
D. Withdrawing current medications (D) is not a rational step, as it would expose the patient to potential disease progression without providing any therapeutic benefit.

**Clinical Pearl:**
In the management of autoimmune diseases, it is essential to choose the most appropriate step based on the current treatment regimen and disease progression. Biologics are a valuable option when conventional immunosuppressive drugs have not achieved adequate disease control. This approach can help to effectively suppress the immune response and potentially halt disease progression.