Vitamin D resistant rickets occurs due to all Except
The disorder is due to missing or inactive PHEX gene. PHEX inactivates phosphatonins that mediate phosphate wasting. Thus, patients with Vitamin D resistant rickets cannot retain phosphate, leading to renal phosphate wasting. ref - Harrisons internal medicine 20e p2920
alpha 1 hydroxylase deficiency
Renal tubular acidosis
Fanconi syndrome
Drugs
Endocrinology