Active clinical trials for "Rickets"

Children and adults with XLH recruited will be treated with calcitriol alone (without phosphate supplementation) for one year, during which the calcitriol dose will be escalated during the first 3 months of therapy. The investigators hypothesize that treatment of adults and children with XLH alone will improve serum phosphate levels and skeletal mineralization without causing an increase in kidney calcifications. The study will also examine if calcitriol therapy will improve growth in children.

The primary purpose of Study INZ701-104 (the ENERGY study) is to assess the safety and tolerability of INZ-701 in infants with ENPP1 Deficiency.

The purpose of this study is to assess the safety, tolerability, pharmacokinetics (PK), and pharmacodynamics (PD) of multiple ascending doses of INZ-701, an ectonucleotide pyrophosphatase/phosphodiesterase 1 (ENPP1) enzyme replacement therapy, for the treatment of ENPP1 Deficiency. The goal of the study is to identify a dose regimen for further clinical development in the treatment of ENPP1 Deficiency.

The primary purpose of Study INZ701-106 (The ENERGY 3 Study) is to assess the efficacy and safety of INZ-701 in children with ENPP1 Deficiency.

The goal of this project is to develop a new noninvasive ultrasound based technique, called vibro-acoustic analysis (VAA), for evaluation of infant bone health with particular application in assessment of bone health in premature infants who are at risk for bone disease.

To determine the prevalence of hypovitaminosis D in HIV infected patients, and the consequences on secondary hyperparathyroidism, and bone mineral density (BMD). Also, to establish the improvement in vitamin D status, parathyroid hormone (PTH) and BMD, in case of receiving vitamin D supplementation, during a follow up period of at least 1 year.

The goal of this National Registry is to is to collect information from patients with rare kidney diseases, so that it that can be used for research. The purpose of this research is to: Develop Clinical Guidelines for specific rare kidney diseases. These are written recommendations on how to diagnose and treat a medical condition. Audit treatments and outcomes. An audit makes checks to see if what should be done is being done and asks if it could be done better. Further the development of future treatments. Participants will be invited to participate on clinical trials and other studies. The registry has the capacity to feedback relevant information to patients and in conjunction with Patient Knows Best (Home - Patients Know Best), allows patients to provide information themselves, including their own reported quality of life and outcome measures.

Determine the association between duration and dose of chronic conventional therapy with Pi and renal (nephrocalcinosis/nephrolithiasis), vascular (endothelial function), and cardiovascular function (echo- cardiography) in patients with hereditary hypophosphatemic rickets with hypercalciuria (HHRH) and patients with X-linked hypophosphatemia (XLH).

On a daily basis many (prematurely born) newborn are subjected to different urine collecting techniques to study biochemical abnormalities. Neonatology nurses and pediatricians are looking for a better and less invasive manner to collect urine in these vulnerable patients. We hypothesise that the urine collecting device as presented in this protocol is less invasive and has good functional abilities to collect urine in these newborns Objective of the study: Clinical feasibility of the urine collection device, indicated by staff and parents. Study design: The study will be an open label, clinical feasibility study, of the urine collection device. During a period of 6 months, 30 feasibility tests will be performed. Study population: Prematurely born newborns, admitted to the neonatology unit of the department of pediatrics at Rijnstate Hospital Arnhem.

Through observation of patients with X-linked hypophosphatemic rickets/osteomalacia (XLH) for up to 10 years, the study intends to collect data that allow achievement of the following objectives: To determine medical characteristics of the disease and the disease process To determine physical and psychological burden on patients as well as economic burden To assess the efficacy and safety of the treatment of the disease