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Published on: August 15, 2019
Novel PHEX gene mutation associated with X linked hypophosphatemic rickets
1Osteoporosis and Bone Metabolism Unit, Department of Endocrinology, Singapore General Hospital, Singapore, Singapore. manju.chandran @ sgh.com.sg
Introduction:
X-linked hypophosphatemia (XLH) is characterized by renal phosphate wasting with hypophosphatemia, short stature, and rachitic manifestations.
Clinical Picture:
We describe a novel nonsense mutation in exon 3 of the PHEX gene (Glu(96)X (c.286G>T) causing XLH in a mother and daughter of Indian ancestry. The mother was noted to have concomitant vitamin D insufficiency.
Conclusion:
Our report identifies a novel nonsense mutation in the PHEX gene causing XLH. It also highlights the fact that the presence of concomitant vitamin D insufficiency should not preclude the diagnosis of familial forms of hypophosphatemic rickets, especially if more than one family member is affected.
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