FDA has accepted a new drug application (NDA) for the oral hypoxia-inducible factor (HIF) prolyl hydroxylase inhibitor vadadustat from Akebia Therapeutics (NSDQ:AKBA) and its partner Otsuka Pharmaceutical Co. (TYO:4578). The two companies are pursuing the use of the drug to treat anemia resulting from chronic kidney disease. The oral drug would offer patients more flexibility…