Which organization developed the International Conference on Harmonisation (ICH) guidelines for GCP?

The International Conference on Harmonisation (ICH) itself is the organization that developed the guidelines for Good Clinical Practice (GCP). Established in 1990, the ICH was created to ensure that the guidelines for the clinical development of pharmaceuticals across Europe, Japan, and the United States are uniform and consistent. This effort aims to facilitate the mutual acceptance of clinical trial data by regulatory authorities in these regions, thus helping to streamline the process for drug development and approval.

While other organizations, such as the FDA, EMA, and WHO, play significant roles in the regulatory landscape and contribute to various aspects of clinical research and guidance, the actual development of the ICH GCP guidelines comes directly from the ICH. Therefore, the correct answer reflects the source of these guidelines and highlights the importance of the ICH in creating internationally recognized standards for clinical trials.