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Faculty Profile Last Modified Time: 10:08:00 AM Fri, 27 Mar 2020   Contact Information Jimmy Holder Associated Profiles  Assistant Professor, Pediatrics, Baylor College of Medicine   Jan and Dan Duncan Neurological Research Institute, Room No.: Suite 1150    holder@bcm.edu     (832) 822-1779    Web Link    Lab Webpage    Stiff-Person Syndrome, Inborn Errors Amino Acid Metabolism, Sulfite Oxidase, Oxidoreductases Acting on Sulfur Group Donors, Infantile Spasms    Associated Profiles Professional Preparation Research and Expertise Affiliations Appointments  Professional Preparation  Degree Major Institution Year  MD/PhD Genetics and Development University of Texas Southwestern 2005  BA Biology Johns Hopkins University 1996  Research and Expertise Research Interests   The Holder lab investigates the genetic and neurobiological basis of neurodevelopmental and neuropsychiatric disorders. There are currently three main projects in the Holder Lab. First, we use cell-based screens to identify genetic modifiers of two synaptic proteins, SHANK3 and SynGAP. Mutations in the SHANK3 and SYNGAP1 genes cause severe neurodevelopmental disorders associated with intellectual disability, autism and epilepsy. Both are typically caused by de novo mutations which result in haploinsufficiency. By identifying genetic modifiers of protein stability, we aim to identify therapeutic entry points for these disorders. Verifying a physiological role for genes identified through these screens will be performed in animal models and iPSC-derived neurons from patients. Second, we are investigating the neuronal and circuit dysfunction responsible for the phenotypes associated with SHANK3 Duplication Syndrome. We are currently focusing on the role of striatal neurons in behavioral abnormalities of mice modeling this disorder. Our lab is using Cre-LoxP and Designer Receptors Exclusively Activated by Designer Drugs (DREADDs) to map the neurons responsible for these behavioral abnormalities. Third, we are investigating the role of genetic variants on bipolar disorder. We use next generation sequencing to identify genetic changes that predispose to bipolar disorder in families. We then propose to use animal models of these changes to validate their role in neuropsychiatric disorders.  Publications/Creative Works Click here to search for this faculty member's publications on PubMed.  Affiliations  Research Consortia Gulf Coast Cluster for Translational Imaging  Appointments Title Department / School Institution Assistant Professor Pediatrics Baylor College of Medicine

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