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The purpose of the study is to do a follow-up survey of all individuals with hereditary hypophosphatemia in Norway, focusing on manifestations in childhood and adolescence. The investigators also want to study phenotype-genotype associations, and look for new genes, in all forms of hereditary hypo and hyperphosphatemia.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| hereditary hypophosphatemia | Norwegian patients with hereditary hypophosphatemia. |
| |
| Hereditary hyperphosphatemia | Norwegian patients with hereditary hyperphosphatemia (hyperphosphatemic familial tumoral calcinosis and hyperphosphatemia hyperostosis syndrome). |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Alfacalcidol; phosphate. | Dietary Supplement | Individual dosage form and dosage depending on phenotype and underlying cause. |
|
| Measure | Description | Time Frame |
|---|---|---|
| Growth | Change i height z-score from time of diagnosis to last registered consultation. | Up to 18 years |
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Inclusion Criteria:
Exclusion Criteria:
-
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The cohorts will be selected from Norwegian patients with hypophosphatemia and hyperphosphatemia.
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| Name | Affiliation | Role |
|---|---|---|
| Robert Bjerknes, Professor, MD, PhD | Haukeland University Hospital, Pediatric department | Study Director |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Haukeland University Hospital, Childrens departement | Bergen | 5021 | Norway |
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| ID | Term |
|---|---|
| D007015 | Hypophosphatemia, Familial |
| D012279 | Rickets |
| D054559 | Hyperphosphatemia |
| ID | Term |
|---|---|
| D015499 | Renal Tubular Transport, Inborn Errors |
| D007674 | Kidney Diseases |
| D014570 | Urologic Diseases |
| D052776 | Female Urogenital Diseases |
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| ID | Term |
|---|---|
| C008088 | alfacalcidol |
| D010710 | Phosphates |
| D000069603 | Sevelamer |
| ID | Term |
|---|---|
| D010756 | Phosphoric Acids |
| D017976 | Phosphorus Acids |
| D000148 | Acids, Noncarboxylic |
| D000143 | Acids |
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EDTA plasma, serum, urine
| Sevelamer | Drug | Pills. Individual dosage depending on clinical symptoms/phenotype. |
|
| D005261 | Female Urogenital Diseases and Pregnancy Complications |
| D000091642 | Urogenital Diseases |
| D052801 | Male Urogenital Diseases |
| D008664 | Metal Metabolism, Inborn Errors |
| D008661 | Metabolism, Inborn Errors |
| D030342 | Genetic Diseases, Inborn |
| D009358 | Congenital, Hereditary, and Neonatal Diseases and Abnormalities |
| D008659 | Metabolic Diseases |
| D009750 | Nutritional and Metabolic Diseases |
| D017674 | Hypophosphatemia |
| D010760 | Phosphorus Metabolism Disorders |
| D001851 | Bone Diseases, Metabolic |
| D001847 | Bone Diseases |
| D009140 | Musculoskeletal Diseases |
| D002128 | Calcium Metabolism Disorders |
| D014808 | Vitamin D Deficiency |
| D001361 | Avitaminosis |
| D003677 | Deficiency Diseases |
| D044342 | Malnutrition |
| D009748 | Nutrition Disorders |
| D007287 |
| Inorganic Chemicals |
| D000838 | Anions |
| D007477 | Ions |
| D004573 | Electrolytes |
| D017553 | Phosphorus Compounds |
| D011073 | Polyamines |
| D000588 | Amines |
| D009930 | Organic Chemicals |