PTH and hyperphosphatemia: Although hypocalcemia and hyperphosphatemia were found to be associated with the highly elevated PTH levels at 10 weeks of age in Oed mice [19] and now at 6 & 9 months in this study, hypocalcemia and hyperphosphatemia did not occur at 12 & 15 months in Oed mice and the reason(s) for this are unclear.