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The lysosome is a specialized part of the cell that functions to degrade metabolic wastes in the cell. Defects in the functioning of the lysosome result in accumulation and subsequent storage of such metabolic wastes. These defects lead to conditions known as lysosomal storage diseases (LSD). LSDs are caused by inherited genetic mutations and there are over 40 genetically distinct lysosomal storage diseases. Within each specific lysosomal storage disease there are variances in severity of disease, age of onset, and clinical presentation. Though the genetic mutations contributing to the disease have been largely clarified, the molecular and cellular mechanisms that contribute to variations in each distinct LSD remain unclear. With this study we intend to better understand at the cellular and molecular level how the accumulation and storage of metabolic wastes in the lysosome affect the clinical manifestation of LSDs, to detect changes in these mechanisms upon treatment administration, and to correlate these results to genetic information. The knowledge obtained from this research study could lead to better ways to diagnose and treat lysosomal storage diseases.
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| Measure | Description | Time Frame |
|---|---|---|
| Correlating genetic mutations with clinical signs and symptoms | Genetic information (DNA) will be collected from biological samples (e.g. blood, skin cells) and correlated with clinical signs and symptoms. DNA will be sequenced in order to identify a specific mutation. Fluorescence assay will be performed to measure the enzyme activity of the affected protein. Physical examination will be performed, and supporting test results will be collected for identifying the signs and symptoms of the particular disorder. | 5 years |
| Measure | Description | Time Frame |
|---|---|---|
| Associated Immune Pathophysiology | Blood will be collected for identifying alterations in the innate and adaptive immune system. Flow cytometry will be used to analyze cell surface and intracellular biomarkers on immune cells such as B-cells, T-cells, eosinophils. | 5 years |
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Inclusion Criteria:
Exclusion Criteria:
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Patients or suspected carriers of a lysosomal storage disorders.
| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Ozlem Goker-Alpan, MD | Contact | 571-308-1904 | ogoker-alpan@ldrtc.org | |
| Renuka Limgala, PhD | Contact | 703-261-6220 | rlimgala@ldrtc.org |
| Name | Affiliation | Role |
|---|---|---|
| Ozlem Goker-Alpan, MD | Lysosomal & Rare Disorders Research & Treatment Center (LDRTC) | Principal Investigator |
| Renuka Limgala, PhD | LDRTC | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Lysosomal and Rare Disorders Research and Treatment Center, Inc (LDRTC) | Recruiting | Fairfax | Virginia | 22030 | United States |
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| ID | Term |
|---|---|
| D016464 | Lysosomal Storage Diseases |
| D005776 | Gaucher Disease |
| D000795 | Fabry Disease |
| D006009 | Glycogen Storage Disease Type II |
| D009542 | Niemann-Pick Diseases |
| ID | Term |
|---|---|
| D008661 | Metabolism, Inborn Errors |
| D030342 | Genetic Diseases, Inborn |
| D009358 | Congenital, Hereditary, and Neonatal Diseases and Abnormalities |
| D008659 | Metabolic Diseases |
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| D009750 | Nutritional and Metabolic Diseases |
| D013106 | Sphingolipidoses |
| D020140 | Lysosomal Storage Diseases, Nervous System |
| D020739 | Brain Diseases, Metabolic, Inborn |
| D001928 | Brain Diseases, Metabolic |
| D001927 | Brain Diseases |
| D002493 | Central Nervous System Diseases |
| D009422 | Nervous System Diseases |
| D008064 | Lipidoses |
| D008052 | Lipid Metabolism, Inborn Errors |
| D052439 | Lipid Metabolism Disorders |
| D059345 | Cerebral Small Vessel Diseases |
| D002561 | Cerebrovascular Disorders |
| D014652 | Vascular Diseases |
| D002318 | Cardiovascular Diseases |
| D040181 | Genetic Diseases, X-Linked |
| D006008 | Glycogen Storage Disease |
| D002239 | Carbohydrate Metabolism, Inborn Errors |
| D015616 | Histiocytosis, Non-Langerhans-Cell |
| D015614 | Histiocytosis |
| D008206 | Lymphatic Diseases |
| D006425 | Hemic and Lymphatic Diseases |