Ulasov IV, Kaverina NV, Pytel P, Thaci B, Liu F, Hurst DR, Welch DR, Sattar HA, Olopade OI, Baryshnikov AY, Kadagidze ZG, Lesniak MS. Clinical significance of KISS1 protein expression for brain invasion and metastasis. Cancer. 2012 Apr 15; 118(8):2096-105.