Based on the provided sources, there is limited information specifically addressing the long-term effects of Cosentyx (secukinumab) in children. The sources primarily focus on the drug's general side effects and its efficacy in treating various conditions. It is important to note that Cosentyx is primarily approved for use in adults and has limited approval for certain pediatric conditions.

The first source, Drug Patent Watch, provides information about the drug's patent status and its approved indications. It does not provide specific information about long-term effects in children [1].

The second source, a study published on PubMed, discusses the use of Cosentyx in pediatric patients with juvenile idiopathic arthritis (JIA). The study evaluates the safety and efficacy of the drug in this population. However, it does not provide long-term data on the effects of Cosentyx in children [2].

The third source, Medical News Today, provides a general overview of Cosentyx and its side effects. It mentions that common side effects include upper respiratory infections, diarrhea, and injection site reactions. However, it does not provide specific information about long-term effects in children [3].

In summary, the provided sources do not offer comprehensive information about the long-term effects of Cosentyx in children. Given that Cosentyx is primarily approved for use in adults and has limited pediatric indications, more research is needed to determine the long-term effects of this medication in children.

Sources:
[1] Drug Patent Watch. (n.d.). Cosentyx. Retrieved from https://www.drugpatentwatch.com/p/biologics/tradename/COSENTYX
[2] PubMed. (2021). Secukinumab for treatment of juvenile idiopathic arthritis: a phase 3, randomized, double-blind, placebo-controlled withdrawal study. Retrieved from https://pubmed.ncbi.nlm.nih.gov/35146532/
[3] Medical News Today. (2021). Cosentyx: Uses, side effects, and more. Retrieved from https://www.medicalnewstoday.com/articles/drugs-cosentyx-side-effects