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This clinical trial is being conducted to study hypophosphatasia (HPP), a bone disorder caused by gene mutations or changes. These gene mutations cause low levels of an enzyme needed to harden bone. The purpose of this study is to test the safety and efficacy of two doses of the study drug called ENB-0040 as compared to a control group to see what effects it has adolescents and adults with HPP.
Hypophosphatasia is rare inherited form of rickets and osteomalacia caused by inactivating mutations in the gene encoding the tissue-nonspecific isoenzyme of alkaline phosphatase (TNSALP). The prevalence of the disease is thought to be about 1:100,000. Inheritance can be autosomal recessive or dominant, and penetrance is variable resulting in a wide range of clinical expressivity. HPP differs from other forms of rickets and osteomalacia in that serum levels of calcium and phosphorus are generally normal or even elevated. Low circulating levels of alkaline phosphatase with elevated serum or urine levels of the TNSALP substrates, inorganic pyrophosphate (PPi), pyroxidal 5'-phosphate (PLP) and phosphoethanolamine (PEA), are the biochemical hallmarks of this inborn error of metabolism.
Disease severity is inversely related to the age at symptom presentation. The most severe cases occur in utero and almost invariably result in death, generally due to pulmonary compromise. Infants who present in the first six months of life have a mortality rate of approximately 50%. Children and adults have less severe disease but can have frequent fractures, bone pain, bowing of the long bones and muscle weakness. Morbidity is generally cumulative; some patients cannot ambulate independently and end up wheelchair-bound.
Allocation: Randomized, Control: Dose Comparison, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment
Duke University Medical Center
Published on BioPortfolio: 2014-08-27T03:12:11-0400
This Clinical Trial is being conducted to study Hypophosphatasia (HPP), a bone disorder caused by gene mutations or changes. These gene mutations cause low levels of an enzyme needed to ha...
This Clinical Trial is being conducted to study Hypophosphatasia (HPP), a bone disorder caused by gene mutations or changes. These gene mutations cause low levels of an enzyme needed to h...
The purpose of this study was to evaluate extended safety and efficacy of etanercept in adults with Ankylosing Spondylitis.
The study will evaluate safety, tolerability, efficacy, pharmacokinetics, and pharmacodynamics of 2 different doses (approved dose and lower dose) of asfotase alfa in adult participants wi...
The study aims to evaluate the bone architecture and bone strength in adults with Hypophosphatasia (HPP).
Hypophosphatasia (HPP) is an inherited disorder characterized by defective mineralization of the bone and teeth that is also associated with a deficiency of serum alkaline phosphatase (ALP). Patients ...
Hypophosphatasia (HPP) is a rare and intractable metabolic bone disease caused by mutations in the ALPL gene. Here, we undertook a nationwide survey of HPP in Japan, specifically regarding the promine...
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An inorganic pyrophosphate which affects calcium metabolism in mammals. Abnormalities in its metabolism occur in some human diseases, notably HYPOPHOSPHATASIA and pseudogout (CHONDROCALCINOSIS).
A genetic metabolic disorder resulting from serum and bone alkaline phosphatase deficiency leading to hypercalcemia, ethanolamine phosphatemia, and ethanolamine phosphaturia. Clinical manifestations include severe skeletal defects resembling vitamin D-resistant rickets, failure of the calvarium to calcify, dyspnea, cyanosis, vomiting, constipation, renal calcinosis, failure to thrive, disorders of movement, beading of the costochondral junction, and rachitic bone changes. (From Dorland, 27th ed)
In a clinical trial or interventional study, participants receive specific interventions according to the research plan or protocol created by the investigators. These interventions may be medical products, such as drugs or devices; procedures; or change...
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