Structural study links statins to calcium-channel activation in muscle cells

Researchers from the University of British Columbia and the University of Wisconsin–Madison used cryo-electron microscopy to investigate interactions between statins and ryanodine receptor 1 (RyR1), a calcium-regulating protein in muscle cells. The source does not report a patient cohort or sample size; the work focused on the channel’s structure and its interaction with statin molecules, particularly atorvastatin.

The researchers describe three atorvastatin molecules binding in a pocket in RyR1: the first makes the closed channel more likely to open, while two further molecules stabilize it in an open state. The resulting calcium leak could contribute to muscle injury. The authors suggest these structural findings may inform development of statins with fewer muscle effects.

This is mechanistic research, not evidence that changing or stopping statin treatment improves outcomes. The reported findings focus on a molecular interaction and do not establish how often it occurs in patients or whether it explains muscle symptoms across statins. Further research and drug development are needed before the findings can inform clinical practice.