Study of Safety and Efficacy of a rhPTH[1-84] of Fixed Doses of 25 and 50 mcg in Adults With Hypoparathyroidism...
HypoparathyroidismUse of PTH (1-84) a recombinant hormone in 25 µg or 50 µg doses for the treatment of adults with hypoparathyroidism. The use of PTH (1-84) should result in a decrease of calcium and vitamin D supplements.
A Study to Investigate the Safety and Tolerability of NPSP558, for the Treatment of Adults With...
HypoparathyroidismThis study is designed to evaluate the effect of 6-months of treatment with NPSP558 in reducing requirements for supplemental oral calcium and active vitamin D, while maintaining stable total serum calcium levels in adult subjects with hypoparathyroidism.
Comparing Pump With Subcutaneous Injection Delivery of PTH 1-34 in the Management of Chronic Hypoparathyroidism...
HypoparathyroidismHypocalcemiaThis study will evaluate the safety, biological activity, and pharmacokinetics of PTH delivered by subcutaneous injection compared with an infusion pump. We anticipate pump delivery of PTH will be more physiologic because it mimics normal parathyroid gland secretion of PTH. We expect that pump delivery will simultaneously normalize blood and urine calcium, phosphorus and magnesium levels with minimal or no fluctuations throughout the day. Pump therapy will require lower PTH doses and should normalize markers of bone turnover. We expect the improved metabolic control during pump therapy will be especially evident in patients with more severe forms of hypoparathyrodism where there is an unmet need for improved therapy.
Does Treatment of Hypovitaminosis D Increase Calcium Absorption?
OsteoporosisOsteopenia4 moreThe purpose is to perform a one-year study designed to assess whether treatment of hypovitaminosis D increases intestinal absorption of calcium, subsequent retention of calcium within bone, decreases bone turnover, and favorably impacts upon skeletal muscle mass, functional status, measures of physical function and quality of life. I hypothesize that treatment of hypovitaminosis D results in improved intestinal calcium absorption, greater retention of calcium within the bone reservoir and improved physical function, quality of life and muscle mass.
Efficacy of Calcium Citrate Versus Calcium Carbonate for the Management of Chronic Hypoparathyroidism...
Chronic HypoparathyroidismHypoparathyroidism is an endocrinopathy characterized by a deficient secretion or action of PTH associated with low calcium level. According to the European guideline (2015), standard treatment includes oral calcium salts and active vitamin D metabolites to relieve symptoms of hypocalcaemia, maintain serum calcium levels in the low normal range and improve the patient's QoL Calcium carbonate is most often used and less expensive than other calcium preparations and contains the highest concentration of elemental calcium per gram (42%). It requires gastric hydrochloric acid to form carbonic acid (H2CO3) that immediately decomposes into water (H2O) and carbon dioxide (CO2). CO2 is responsible for its side effects such as flatulence, constipation and general gastrointestinal disorders. Therefore, in some patients it is better to find an alternative to calcium carbonate. Calcium citrate should be recommended to patients with achlorhydria or on treatment with proton pump inhibitors (PPI) as well as to patients who preferred to take supplements outside mealtimes. furthermore, patients with hypoparathyroidism have an increased risk of kidney stones. Kidney stones are formed by calcium salts, among which the most frequent ones are calcium-oxalate (70-80%), followed by calcium-phosphate and uric acid. Citrate salts are widely used in the treatmentof nephrolithiasis, since have shown an inhibitory effect on kidney stone formation. Up to now, there are no studies aimed to investigate the efficacy of calcium citrate in the management of subjects with chronic hypoparathyroidism. In particular, we will investigate if calcium citrate compared to calcium carbonate does not affect the risk of renal stones, if it is able to maintain normal calcium levels and, if it has an impact on QOL, in subjects with chronic hypoparathyroidism.
Injection of Teriparatide to Prevent Hypocalcemia After Parathyroidectomy in Dialysis Patients (TeriCa)....
Secondary HyperparathyroidismChronic Kidney Disease-Mineral and Bone Disorder3 moreThis is a pilot randomized controlled trial aimed to evaluate the effect of teriparatide on the clinical course of hypocalcemia after parathyroidectomy for secondary hyperparathyroidism in dialysis-dependent patients.
Treatment of Hypoparathyroidism With Subcutaneous PTH (1-84) Injections: Effects on Muscle Function...
HypoparathyroidismThe aim of the study is to assess whether PTH (1-84) therapy posses advantages compared to conventional treatment in patients with hypoparathyroidism on muscle function, quality of life, calcium homeostasis, bone metabolism, and body composition.
Study to Assess the Blood Concentrations and Actions of Recombinant Human Parathyroid Hormone (rhPTH...
HypoparathyroidismThis study is being conducted to characterize the effects of twice daily administration of rhPTH(1-84) on the way the body handles rhPTH(1-84) as well as its actions and safety and tolerability over the course of 24 hours as compared with the current once daily dosing regimen of marketed rhPTH(1-84) (marketed in the United States as Natpara® and in the EU as Natpar).
Use of NPSP558 in the Treatment of Hypoparathyroidism
HypoparathyroidismUse of PTH (1-84) a recombinant hormone in escalating doses for the treatment of adults with hypoparathyroidism. The use of PTH should result in a decrease of calcium and vitamin D supplements.
Recombinant Human rhPTH(1-34) VS Association Alfacalcidol/Hydrochlorothiazide in Severe Primary...
Autosomal Dominant Hypocalcemia OR Primary Hypoparathyroidism Related to Other Cause But Complicated by Hypercalciuria Under TreatmentHypoparathyroidism is a rare condition in which the parathyroid glands fail to produce sufficient amount of parathyroid hormone or the parathyroid hormone produced lacks biologic activity. The most common cause of hypoparathyroidism is damage to or removal of the parathyroid glands due to neck surgery for another condition. Occurrence of hypercalciuria under treatment is a frequent concern in primary hypoparathyroidism, limiting correction of hypocalcemia. Hypoparathyroidism can also be caused by an autoimmune process. In rare cases, hypoparathyroidism may occur as a genetic disorder inherited as an autosomal recessive, autosomal dominant or X-linked recessive trait. The autosomal dominant hypocalcemia (ADH) is mainly caused by heterozygous activating mutations in the CASR gene encoding CaSR). As other severe presentation of primary hypothyroidism, ADH is characterized by the increased risk to develop hypercalciuria and nephrolithiasis. The purpose of the study is to compare two therapeutic approaches in severe hypoparathyroidism in order to limit the risk of nephrocalcinosis and renal failure when attempting to correct hypocalcemia: rhPTH(1-34) vs association of active vitamin D and hydrochlorothiazide. The European Society of Endocrinology Clinical has indeed recently published guidelines for the treatment of chronic hypoparathyroidism in adults. These guidelines suggest considering treatment with a thiazide diuretic In a patient with hypercalciuria and replacement therapy with PTH in patients who do not stably and safely maintain their serum and urinary calcium in the target range.