C1QTNF3 and cancer: It is reported that many cell lines express CTRP3, such as mouse chondrogenic progenitor (N1511) (Maeda et al., 2006), mouse preadipocytes (3T3-L1a) (Schaffler et al., 2007; Schmid et al., 2012; Li et al., 2015), mouse osteoblast-like non-cancer cell line (MC3T3-E1) (Akiyama et al., 2006), mouse osteosarcoma cell line (LM8, NOHS) (Akiyama et al., 2009), TM3 mouse Leydig cells (Otani et al., 2012), and human mesangial cells (HMCs) (Zhang et al., 2016).