Levels of S1P in the interstitial fluid from the mammary tumors were reduced when tumor growth was suppressed by oral administration of the potent S1P receptor functional antagonist, FTY720 (fingolimod; 2-amino-2-[2-(4-octylphenyl)ethyl]1,3-propanediol) [57]. Here, MBTPS1 is linked to neoplasm.