Both Ena/VASP and Scar/WAVE are implicated in breast cancer metastasis by multiple lines of evidence.15, 16, 45, 46 Our results suggest that the pro-metastatic function of Lpd may, in part, involve coordinating the activities of these two distinct types of actin regulators to optimize chemotactic invasion and matrix degradation by invading tumor cells. The gene discussed is RPS4X; the disease is breast carcinoma.