Abstract: The invention provides a compound of formula (0): or a pharmaceutically acceptable salt, N-oxide or tautomer thereof; wherein: n is 1 or 2; X is CH or N; Y is selected from CH and C—F; Z is selected from C—Rz and N; R1 is selected from: -(Alk1)t-Cyc1; wherein t is 0 or 1; Optionally substituted C1-6 acyclic hydrocarbon groups R2 is selected from hydrogen; halogen; and C1-3 hydrocarbon groups optionally substituted with one or more fluorine atoms; R3 is hydrogen or a group L1-R7; R4 is selected from hydrogen; methoxy; and optionally substituted C1-3 alkyl; and R4a is selected from hydrogen and a C1-3 alkyl group; wherein Rz, Alk1, Cyc1, L1 and R7 are defined herein; provided that the compound is other than 6-benzyl-3-{2-[(2-methylpyrimidin-4-yl)amino]pyridin-4-yl}-7,8-dihydro-1,6-naphthyridin-5(6H)-one and 3-{2-[(2-methylpyrimidin-4-yl)amino]pyridin-4-yl}-7,8-dihydro-1,6-naphthyridin-5(6H)-one and salts and tautomers thereof.

Abstract: A peritoneal dialysis system comprises a cycler including a pump actuator; a disposable set including a pumping portion operable with the pump actuator, a patient line positioned to fluidly communicate with the pumping portion, and a drain container positioned to fluidly communicate with the pumping portion; and a control unit configured to cause the pump actuator to actuate the pumping portion to (i) run a peritoneal dialysis treatment in which fresh dialysis fluid is pumped through the patient line to a patient and used dialysis fluid is pumped from the patient to the drain container, and (ii) at the end of treatment, pump the used dialysis fluid from the drain container, through the patient line, to a house drain.