Tafolecimab (SINTBILO®), a subcutaneously administered anti-proprotein convertase subtilisin/kexin type 9 enzyme (PCSK9) monoclonal antibody, is being developed by Innovent for the treatment of hypercholesterolemia and mixed hyperlipidemia. Tafolecimab was approved in August 2023 in China as an adjunct to diet, in combination with a statin or statin with other low-density lipoprotein cholesterol (LDL-C)-lowering therapies, for the treatment of adults with primary hyperlipidemia [including heterozygous familial hypercholesterolemia (HeFH) and non-familial hypercholesterolemia (non-FH)] and mixed dyslipidemia who have failed to achieve LDL-C goals despite moderate or higher doses of statins, to reduce LDL-C, total cholesterol (TC), and apolipoprotein B (ApoB) levels. This article summarizes the milestones in the development of tafolecimab leading to this first approval for the treatment of adults with primary hyperlipidemia and mixed dyslipidemia.