A SAE was filed, including hypothesized possible causes for the partial weakness such as a late-induced vascular spasm, either resulting from ethanol present in the [68Ga]Ga-PSMA-11 solution (0.15 mL; 2 mL/8 mL with 50/50% (v/v) ethanol water), or from extravasation (i.e., leakage) of [68Ga]Ga-PSMA-11, and/or leakage of iodine/gadolinium-based contrast agents into the interstitial space. The gene discussed is FOLH1; the disease is muscle cramp.