10 Clinical Trials for Various Conditions
Sanfilippo syndrome type D is a ultra rare syndrome with limited available natural history data. This study is planned to document, through retrospective and prospective data collection, syndrome progression in children and young adults with Sanfilippo syndrome type D. The results from this study may inform future clinical studies in targeted therapies for patients with Sanfilippo syndrome type D and may serve as an external control since there are very few patients with Sanfilippo syndrome type D.
This is a multicenter, open-label, Phase 1/2 study to assess the safety, tolerability, pharmacokinetics (PK), pharmacodynamics (PD) and clinical efficacy of DNL126 in participants with Sanfilippo syndrome Type A (MPS IIIA). The core study period is 25 weeks (approximately 6 months) and is followed by a 72-week (approximately 18 month) open-label extension (OLE). Participants with MPS IIIA will be enrolled in two planned cohorts, and additional participants with MPS IIIA may be enrolled in three optional cohorts.
The objectives of this study are to describe the clinical and biochemical characteristics and course of disease progression in participants with Mucopolysaccharidosis type IIIB (MPS IIIB)
Sanfilippo syndrome Type A, or Mucopolysaccharidosis (MPS) IIIA, is a rare lysosomal storage disease caused by deficiency of the enzyme heparan N-sulfatase (sulfamidase). In the absence of this enzyme, there is an accumulation of the glycosaminoglycan, heparan sulfate, resulting in progressive neurodegeneration. Symptoms are usually first noted in the 1st or 2nd year of life, although definitive diagnosis is often delayed, with an average age of diagnosis of 4.5 years. The disease is characterized by developmental delays initially, followed by neurological developmental arrest, then regression. These developmental deficits are typically associated with severe behavioral disturbances. Patients have a significantly reduced lifespan, with few surviving beyond the 2nd or 3rd decade. The purpose of this study is to evaluate the safety and efficacy of recombinant human heparan-N-sulfatase (rhHNS) in pediatric patients with Early Stage Mucopolysaccharidosis Type III A Disease.
Hypothesis #1: Factor analysis of the revised Sanfilippo Behavior Rating Scale (SBRS) will identify a group of externalizing behaviors and a group of Klüver-Bucy syndrome-like behaviors as two different factors that are at least partially independent. Hypothesis #2a: Children with MPS III will show more hyperlocomotion, fearlessness, asociality and noncompliance than children of similar cognitive ability with MPS I. Hypothesis #2b: These behaviors will become more frequent and/or intensify over time, consistent with the Cleary and Wraith (1993) model. Quantifying them will provide a more empirical framework for staging disease progression. Hypothesis #3: Brain volumetric analysis and diffusion-tensor imaging will reveal abnormalities of frontal and temporal lobe structures that will correlate with externalizing and Klüver-Bucy syndrome-like behaviors, respectively. Hypothesis #4. Loss of cognitive and language function as measures of neurologic decline will directly precede or co-vary with behavioral decline. The primary objective of this study is to identify the behavioral phenotype and its neural basis in MPS III (Sanfilippo syndrome). Is the behavioral phenotype similar to that of Klüver-Bucy syndrome, and is there evidence for amygdala abnormality? The secondary objective of this research study is to develop easily administered, sensitive and specific neurobehavioral and neuroimaging markers to characterize the behavioral phenotype(s) of MPS III; to track their progression; and to delineate their neural substrates. Such markers are critical for identifying the stage of disease for each patient, and to measure treatment outcome. Although we know that severe cognitive decline is one essential characteristic of MPS III, the other highly salient characteristic is a range of abnormal and disruptive behaviors that can include, but go well beyond, childhood noncompliance and oppositionality. These behaviors set Sanfilippo syndrome apart from the other MPS disorders. They cause major disruption in the child's familial, school, and community environments. Delineating these behavioral abnormalities will help in better understanding the neurological disease.
MPS IIIA is predominantly a central nervous system disease causing cognitive disability, progressive loss of acquired skills, behavioral and sleep disturbance. LYS-SAF302 is a gene therapy which is intended to deliver a functional copy of the SGSH gene to the brain. This is a phase 2-3 study to assess the efficacy in improving or stabilizing the neurodevelopmental state of MPS IIIA patients.
This extension study will allow participants to continue receiving treatment with HGT-1410 and to initiate treatment in patients who received no-treatment in Study HGT-SAN-093, and will evaluate the long-term safety and efficacy of the study drug.
The objective is to perform a retrospective chart review to generate data to evaluate the clinical characteristics and course of disease progression of MPS IIIB.
Study to evaluate the safety and tolerability of intravenous (IV) administration of SBC-103 in participants with mucopolysaccharidosis III, type B (MPS IIIB, Sanfilippo B) with evaluable signs or symptoms of developmental delay.
Hypothesis: Children diagnosed with a lysosomal disease will exhibit developmental, adaptive, and behavioral strengths and difficulties depending upon 1) biomedical risk factors (i.e. the specific genetic disorder responsible for the illness); 2) available modifying interventions, whether medical or behavioral; and 3) social risks in the children's families, neighborhoods and communities. A valid and reliable telephone-based surveillance system can successfully collect the data required to elucidate these developmental, adaptive and behavioral strengths and difficulties.