Thomas Wassink, MD
Introduction
My laboratory's goal is to identify genes that underlie susceptibility to a variety of psychiatric disorders, with our primary focus being autism. We use a variety of approaches in this endeavor, including positional cloning, sophisticated cytogenetic analyses, various microarray platforms, and candidate disease gene screening. We perform these studies in DNA obtained from numerous independent samples of families with multiple autistic individuals. We are also equipped to assess the function and expression of identified disease genes using an array of molecular and animal model techniques. Extensive additional resources and expertise are available to us here at Iowa through our collaborations with the Center for Statistical Genetics, the UIHC Cytogenetics laboratory, and the Center for Bioinformatics and Computational Biology. We are also actively investigating the genetics of panic disorder and schizophrenia. The panic disorder work uses traditional positional cloning methods and a sample of moderate to large panic disorder pedigrees. The schizophrenia genetics research is performed in association with the Department of Psychiatry's Mental Health Clinical Research Center. We collect DNA from individuals with schizophrenia, their families, and psychiatrically normal control subjects. All of these individuals participate in protocols that gather data from a wide variety of research domains, including functional and structural brain imaging, cognitive testing, disease phenomenology, longitudinal progression of disease, etc. The goal with the schizophrenia sample, therefore, is to investigate relationships between genetic information and these other types of data.
Current Positions
- Professor of Psychiatry
- Professor of Pediatrics
- Medical Director, Adult NeuroPsychiatry
Education
- BA in English Literature, Northwestern University, Chicago, IL
- MD, University of Illinois at Chicago, Chicago, IL
- Resident in Psychiatry, Evanston Hospital (Northwestern University), Evanston, IL
- Fellow, Mental Health Clinic Research Center, University of Iowa Health Care Medical Center, Iowa City, IA
Graduate Program Affiliations
Research Interests
- Genetic effects on the longitudinal trajectory of brain structure, cognition, and phenomenology in schizophrenia, autism, and healthy populations
- Genetic factors that influence autistic traits in children with fragile X mental retardation
- Genomic copy number variation in inherited eye disorders such as glaucoma and age-related macular degeneration
- The genetic basis of schizophrenia and autism
- Relationships between childhood intellectual performance, genetic factors, and traits related to autism
- The genetic basis of psychiatric phenomenology in schizophrenia and autism
- Genomic copy number variation in schizophrenia and autism
- The genetic basis of brain morphology, cognitive abilities, and brain activity in control populations and psychiatric disease
Licenses & Certifications
- Psychiatry certification, American Board of Psychiatry and Neurology
- National Board of Medical Examiners
- Iowa Controlled Substance Act, Iowa Board of Pharmacy
- Medical license, Iowa Board of Medicine
Selected Publications
- Guilfoyle, J., Winston, M., Sideris, J., Martin, G.E., Nayar, K., Bush, L., Wassink, T., & Losh, M. (2022) Childhood Academic Performance: A Potential Marker of Genetic Liability to Autism. Journal of Autism and Developmental Disorders 53 1989-2005. DOI: 10.1007/s10803-022-05459-5
- Madencioglu, D.A., Kruth, K, Shin, M,; Andreasen, N., Wassink, T., Williams, A. (2022) Generation of a human induced pluripotent stem cell line from a patient diagnosed with schizophrenia carrying a 16p11.2 deletion. Stem Cell Research 59. DOI: 10.1016/j.scr.2021.102636
- Losh, M., Martin, G., Lee, M., Klusek, J., Sideris, J. & Wassink, T. H. (2017). Developmental markers of genetic liability to autism in parents: A longitudinal multigenerational study. (Vols. 47). (3), pp. 834-845. Journal of Autism and Developmental Disorders.
- Joshi, R. S., Garg, P., Zaitlen, N., Lappalainen, T., Watson, C. T., Azam, N., Ho, D., Li, X., Antonarakis, S. E., Brunner, H. G., Buiting, K., Cheung, S. W., Coffee, B., Eggermann, T., Francis, D., Geraedts, J. P., Gimelli, G., Jacobson, S. G., Le Caignec, C., de Leeuw, N., Liehr, T., Mackay, D. J., Montgomery, S. B., Pagnamenta, A. T., Papenhausen, P., Robinson, D. O., Ruivenkamp, C., Schwartz, C., Steiner, B., Stevenson, D. A., Surti, U., Wassink, T. & Sharp, A. J. (2016). DNA Methylation Profiling of Uniparental Disomy Subjects Provides a Map of Parental Epigenetic Bias in the Human Genome. American journal of human genetics 99 (3) 555-66. DOI: 10.1016/j.ajhg.2016.06.032. PMID: 27569549. PMCID: PMC5011056.
- ..., Wassink, T. H., O'Donovan, M. C., Thompson, P. M., Neale, B. M., Medland, S. E. & Sullivan, P. F. (2016). Genetic influences on schizophrenia and subcortical brain volumes: large-scale proof of concept. (Vols. 19). (3), pp. 420-431. Nat Neurosci. PMID: 26854805.
- Rudd, D., Axelsen, M., Epping, E. A., Andreasen, N. & Wassink, T. (2015). Childhood-onset schizophrenia case with 2.2 Mb deletion at chromosome 3p12.2-p12.1 and two large chromosomal abnormalities at 16q22.3-q24.3 and Xq23-q28. Clinical case reports 3 (4) 201-7. DOI: 10.1002/ccr3.192. PMID: 25914809. PMCID: PMC4405302.
- Walton, E., Geisler, D., Lee, P. H., Hass, J., Turner, J. A., Liu, J., Sponheim, S. R., White, T., Wassink, T. H., Roessner, V., Gollub, R. L., Calhoun, V. D. & Ehrlich, S. (2014). Prefrontal inefficiency is associated with polygenic risk for schizophrenia. Schizophrenia bulletin 40 (6) 1263-71. DOI: 10.1093/schbul/sbt174. PMID: 24327754. PMCID: PMC4193692.
- Wassink, T. H., Hazlett, H. C., Davis, L. K., Reiss, A. L. & Piven, J. (2014). Testing for association of the monoamine oxidase A promoter polymorphism with brain structure volumes in both autism and the fragile X syndrome. Journal of neurodevelopmental disorders 6 (1) 6. DOI: 10.1186/1866-1955-6-6. PMID: 24669826. PMCID: PMC3987046.
- Rudd, D. S., Axelsen, M., Epping, E. A., Andreasen, N. C. & Wassink, T. H. (2014). A genome-wide CNV analysis of schizophrenia reveals a potential role for a multiple-hit model. Am J Med Genet B Neuropsychiatr Genet 165B (8) 619-26. PMID: 25228354.
- , Black, D. W., Coryell, W., Potash, J. B., Wassink, T. & Wray, N. R. (2013). Genetic relationship between five psychiatric disorders estimated from genome-wide SNPs. Nat Genet 45 (9) 984-94. PMID: 23933821. PMCID: PMC3800159.