Overview
RESEARCH INTERESTS
A multidisciplinary approach to care of individuals with genetic disorders in conjunction with clinical and bench research that contributes to:
1) An understanding of the natural history and delineation of long term complications of genetic disorders with a special focus on liver Glycogen storage disorders, lysosomal disorders with a special focus on Pompe disease, Down syndrome and hypophosphatasia
2) ) The development of new therapies such as AAV gene therapy, enzyme therapy, small molecule and other approaches for genetic disorders through translational research
3) The development and execution of large multicenter trials to confirm safety and efficacy of potential therapies
4) Role of antibodies/immune response in patients on therapeutic proteins and AAV gene therapy
. Glycogen Storage Disease (GSD): We are actively following subjects with all types of Glycogen Storage Disease, with particular emphasis on types I, II, III, IV, VI and IX. The goal of the treatment team is to better determine the clinical phenotype and long term complications of these diseases. Attention to disease manifestations observed in adulthood, such as adenomas and risk for HCC, is of paramount importance in monitoring and treating these chronic illnesses. We are establishing clinical algorithms for managing adenomas, and the overall management of these patients including cardiac, bone, muscle and liver issues. A special focus is biomarker discovery, an Omics approach including metabolomics and immune phenotyping. We are working on AAV gene therapy for several hepatic GSDs
.Lysosomal Storage Disease: The Duke Lysosomal Storage Disease (LSD) treatment center follows and treats patients with Pompe, Gaucher, Fabry, Mucopolysaccharidosis, Niemann Pick, LAL-D and other LSD's. The Duke Metabolism Clinical Research Team is exploring many aspects of enzyme replacement therapy (ERT), including impact on different systems, differential response, and long term effects. Other symptomatic and treatment interventions for this category of diseases are also being explored in the context of clinical care.
. Pompe Disease: The care team has extensive experience in the care of infants and adults with Pompe disease and was instrumental in conducting clinical trials and the bench to bedside work that led to the 2006 FDA approval of alglucosidase alfa, the first treatment for this devastating disease. We are currently focusing on role of antibodies/immune response on patient outcome and role of immune modulation/immune suppression as an adjunct to ERT. Our team is also working on AAV gene therapy for Pompe disease. A focus is on newborn screening (NBS) and understanding the clinical phenotype and management approaches for babies identified via NBS
. Hypophosphatasia: We follow a large cohort of patients with HPP. The goal is to understand the features of the disease beyond bone disease, development of biomarkers, role of ERT and immune responses in HPP
. Neuromuscular disorders: We are collaborating with neurologists, cardiologists and neuromuscular physicians to serve as a treatment site for clinical trials in these diseases. We are currently involved in trials of DMD and are working closely on setting up collaborations for studies in SMA.
A multidisciplinary approach to care of individuals with genetic disorders in conjunction with clinical and bench research that contributes to:
1) An understanding of the natural history and delineation of long term complications of genetic disorders with a special focus on liver Glycogen storage disorders, lysosomal disorders with a special focus on Pompe disease, Down syndrome and hypophosphatasia
2) ) The development of new therapies such as AAV gene therapy, enzyme therapy, small molecule and other approaches for genetic disorders through translational research
3) The development and execution of large multicenter trials to confirm safety and efficacy of potential therapies
4) Role of antibodies/immune response in patients on therapeutic proteins and AAV gene therapy
. Glycogen Storage Disease (GSD): We are actively following subjects with all types of Glycogen Storage Disease, with particular emphasis on types I, II, III, IV, VI and IX. The goal of the treatment team is to better determine the clinical phenotype and long term complications of these diseases. Attention to disease manifestations observed in adulthood, such as adenomas and risk for HCC, is of paramount importance in monitoring and treating these chronic illnesses. We are establishing clinical algorithms for managing adenomas, and the overall management of these patients including cardiac, bone, muscle and liver issues. A special focus is biomarker discovery, an Omics approach including metabolomics and immune phenotyping. We are working on AAV gene therapy for several hepatic GSDs
.Lysosomal Storage Disease: The Duke Lysosomal Storage Disease (LSD) treatment center follows and treats patients with Pompe, Gaucher, Fabry, Mucopolysaccharidosis, Niemann Pick, LAL-D and other LSD's. The Duke Metabolism Clinical Research Team is exploring many aspects of enzyme replacement therapy (ERT), including impact on different systems, differential response, and long term effects. Other symptomatic and treatment interventions for this category of diseases are also being explored in the context of clinical care.
. Pompe Disease: The care team has extensive experience in the care of infants and adults with Pompe disease and was instrumental in conducting clinical trials and the bench to bedside work that led to the 2006 FDA approval of alglucosidase alfa, the first treatment for this devastating disease. We are currently focusing on role of antibodies/immune response on patient outcome and role of immune modulation/immune suppression as an adjunct to ERT. Our team is also working on AAV gene therapy for Pompe disease. A focus is on newborn screening (NBS) and understanding the clinical phenotype and management approaches for babies identified via NBS
. Hypophosphatasia: We follow a large cohort of patients with HPP. The goal is to understand the features of the disease beyond bone disease, development of biomarkers, role of ERT and immune responses in HPP
. Neuromuscular disorders: We are collaborating with neurologists, cardiologists and neuromuscular physicians to serve as a treatment site for clinical trials in these diseases. We are currently involved in trials of DMD and are working closely on setting up collaborations for studies in SMA.
Current Appointments & Affiliations
Chen Family Distinguished Professor of Pediatrics
·
2011 - Present
Pediatrics, Medical Genetics,
Pediatrics
Professor of Pediatrics
·
2007 - Present
Pediatrics, Medical Genetics,
Pediatrics
Chief, Division of Medical Genetics
·
2005 - Present
Pediatrics, Medical Genetics,
Pediatrics
Professor in the Department of Molecular Genetics and Microbiology
·
2018 - Present
Molecular Genetics and Microbiology,
Basic Science Departments
Member in the Duke Clinical Research Institute
·
2005 - Present
Duke Clinical Research Institute,
Institutes and Centers
Recent Publications
Plasma glial fibrillary acidic protein (GFAP) is a biomarker for central nervous system involvement in infantile-onset Pompe disease
Journal Article eBioMedicine · January 2026 Full text CiteEarly initiation of enzyme replacement therapy as facilitated by newborn screening improves health outcomes among patients with infantile-onset Pompe disease
Journal Article Genetics in Medicine Open · January 1, 2026 Purpose: To assess the benefits of early enzyme replacement therapy (ERT) in patients with infantile-onset Pompe disease (IOPD). Methods: A retrospective chart review of 17 IOPD (7 cross-reactive immunologic material [CRIM]-negative and 10 CRIM positive) w ... Full text CiteSystemic Disease Progression and Neurodegeneration in the Gbe1ys/ys Mouse Model of Glycogen Storage Disease Type IV.
Journal Article Am J Pathol · December 15, 2025 Glycogen storage disease type IV (GSD IV) is a rare autosomal recessive disorder caused by glycogen branching enzyme (GBE1) deficiency, resulting in the accumulation of insoluble polyglucosan. The Gbe1ys/ys mouse model, carrying the p.Y329S variant, recapi ... Full text Link to item CiteRecent Grants
A GLOBAL PROSPECTIVE OBSERVATIONAL REGISTRY OF PATIENTS WITH POMPE DISEASE
Clinical TrialPrincipal Investigator · Awarded by Amicus Therapeutics, Inc. · 2024 - 2033A Post-Authorization Safety Study (PASS) to Assess Long-term Safety in Patients with Pompe Disease Treated with Avalglucosidase alfa
Clinical TrialPrincipal Investigator · Awarded by Sanofi US · 2024 - 2030Unified Program for Therapeutics in Children
Inst. Training Prgm or CMEPreceptor · Awarded by National Institutes of Health · 2025 - 2030View All Grants
Education, Training & Certifications
University of Bombay, St. Xavier College (India) ·
1985
M.B.B.S.