INPP5B and oculocerebrorenal syndrome: In addition to SHIP1 and SHIP2, eight other 5′ phosphatases have been reported; OCRL1 (oculocerebrorenal syndrome of Lowe), synaptojanin1, synaptojanin 2, proline rich inositol poly-phosphate 5-phosphatase (PIPP), 72-5ptase/Type IV/Inpp5e, SKIP, INPP5B, and 5-phosphatase1.