| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Hypophosphatasia | Is a | True | Disorder of phosphate, calcium and vitamin D metabolism | Inferred relationship | Existential restriction modifier |  | 
| Familial idiopathic hypercalciuria | Is a | False | Disorder of phosphate, calcium and vitamin D metabolism | Inferred relationship | Existential restriction modifier |  | 
| Pseudohyperparathyroidism | Is a | True | Disorder of phosphate, calcium and vitamin D metabolism | Inferred relationship | Existential restriction modifier |  | 
| Osteopetrosis with renal tubular acidosis | Is a | True | Disorder of phosphate, calcium and vitamin D metabolism | Inferred relationship | Existential restriction modifier |  | 
| Hyperphosphatemia | Is a | False | Disorder of phosphate, calcium and vitamin D metabolism | Inferred relationship | Existential restriction modifier |  | 
| Hyperphosphatasemia with intellectual disability | Is a | False | Disorder of phosphate, calcium and vitamin D metabolism | Inferred relationship | Existential restriction modifier |  | 
| Rickets | Is a | False | Disorder of phosphate, calcium and vitamin D metabolism | Inferred relationship | Existential restriction modifier |  | 
| Hypophosphatemia | Is a | False | Disorder of phosphate, calcium and vitamin D metabolism | Inferred relationship | Existential restriction modifier |  | 
| Hypocalcemia | Is a | False | Disorder of phosphate, calcium and vitamin D metabolism | Inferred relationship | Existential restriction modifier |  | 
| Acid phosphatase deficiency | Is a | True | Disorder of phosphate, calcium and vitamin D metabolism | Inferred relationship | Existential restriction modifier |  | 
| Hypercalcemia | Is a | False | Disorder of phosphate, calcium and vitamin D metabolism | Inferred relationship | Existential restriction modifier |  | 
| Hyperphosphatasemia with bone disease | Is a | True | Disorder of phosphate, calcium and vitamin D metabolism | Inferred relationship | Existential restriction modifier |  | 
| Disorders of phosphorus metabolism | Is a | False | Disorder of phosphate, calcium and vitamin D metabolism | Inferred relationship | Existential restriction modifier |  | 
| Disorders of calcium metabolism | Is a | False | Disorder of phosphate, calcium and vitamin D metabolism | Inferred relationship | Existential restriction modifier |  | 
| Phosphorus and calcium disorders | Is a | True | Disorder of phosphate, calcium and vitamin D metabolism | Inferred relationship | Existential restriction modifier |  | 
| Disorder of calcium metabolism | Is a | True | Disorder of phosphate, calcium and vitamin D metabolism | Inferred relationship | Existential restriction modifier |  | 
| Disorder of phosphorus metabolism | Is a | True | Disorder of phosphate, calcium and vitamin D metabolism | Inferred relationship | Existential restriction modifier |  | 
| Idiopathic hyperphosphatasemia | Is a | False | Disorder of phosphate, calcium and vitamin D metabolism | Inferred relationship | Existential restriction modifier |  |