Based on the provided sources, there is limited information regarding the specific interactions of Cosentyx (secukinumab) with other RA (rheumatoid arthritis) drugs. However, we can gather some general information about Cosentyx and its use.

Cosentyx is a biologic medication used to treat various conditions, including psoriatic arthritis, psoriasis, and ankylosing spondylitis [1][2]. It works by targeting a specific protein in the body, interleukin-17A (IL-17A), which plays a significant role in inflammation and the symptoms of the aforementioned conditions [2].

In general, biologic medications like Cosentyx can be used with or without other RA drugs, such as methotrexate, depending on the individual patient's condition and the judgement of their healthcare provider [3]. However, it is essential to consult with a healthcare professional for personalized advice, as combining medications may increase the risk of adverse effects or reduce the effectiveness of the treatments [3].

It is also important to note that the sources provided do not contain sufficient information to determine whether there are any specific, unique interactions between Cosentyx and other RA drugs.

Sources:
[1] https://www.drugpatentwatch.com/p/biologics/tradename/COSENTYX
[2] https://www.cosentyx.com/psoriatic-arthritis/how-cosentyx-works
[3] https://www.webmd.com/drugs/2/drug-167673/cosentyx-subcutaneous/details (Section "How to Use")