Idiopathic inflammatory myopathies are rare, complex muscle diseases that pose a significant burden for affected patients. The goal of this project is to create a transcriptomic atlas of these diseases, focusing on gene expression. We collaborate with several international research centers to generate a meaningful dataset. To achieve this, single-cell, single-nucleus, and spatial transcriptomic data will be integrated using biostatistical methods to create a high-resolution map of muscle tissue. The resulting atlas will be made publicly accessible and is intended to provide new insights into disease mechanisms, thereby laying the foundation for future therapies.