About the Presenters
Randi J. Hagerman
Developmental pediatrician Randi J. Hagerman, MD, FAAP, is a highly regarded professional within the Fragile X community. She co-founded the National Fragile X Foundation in 1984 and served on the board for 25 years. In 2009, she decided it was time to step aside and let others bring their expertise to the board, though she continues to help guide the foundation to this day.
There is no aspect of the NFXF that Randi has not helped shape. Her strength as both a clinician and researcher has informed the NFXF mission and strategic plan. She and her husband, Dr. Paul Hagerman, generously support the NFXF mission. While Randi is no longer a board member, she is active on the NFXF Scientific & Clinical Advisory Committee and the Fragile X Clinical & Research Consortium where she represents the UC Davis Medical Center’s MIND Institute as medical director of the Fragile X Clinic.
Randi continues to be a sought-after speaker and her work has expanded from Fragile X syndrome to all Fragile X-associated disorders. Randi is continually on the go as an international spokesperson for Fragile X. Fortunately, she’s only seconds away by phone when we need to call upon her for her guidance, advice, and wisdom.
Rebecca Shaffer
Rebecca Shaffer, PsyD, HSPP, is a professor of pediatrics at Cincinnati Children’s Hospital, and she specializes in both clinical care and research with Fragile X syndrome and autism spectrum disorder. She is also the director of psychological services for the Cincinnati Fragile X Center. Her research is primarily focused on emotion dysregulation in both FXS and ASD. She enjoys helping individuals find ways to calm their bodies and minds and fully engage in the world around them. She also enjoys helping caregivers find ways to best support them in this process. “It is truly a pleasure to work with the Fragile X population and their families.”
David Hessl
David Hessl, PhD, is a licensed clinical psychologist and the head psychologist at the Fragile X Research and Treatment Center at UC Davis, where FXTAS (Fragile X-associated tremor/ataxia syndrome) was first discovered and reported in 2001. His clinical interests involve cognitive, emotional, and behavioral evaluation of children, adolescents, and adults with neurodevelopmental disorders, especially those with Fragile X syndrome, autism, ADHD, and learning disabilities. He also has expertise in developmental psychopathology, particularly mood and anxiety disorders, in infants and young children.
He directs the Translational Psychophysiology and Assessment Laboratory (T-PAL) at the MIND Institute to investigate the emotional psychophysiology of children with neurodevelopmental disorders, and to develop novel outcome measures for clinical trials. His work currently concentrates on autism, Fragile X syndrome, Down syndrome, and Fragile X premutation carriers, who are at risk for neurodegenerative disease.
He received his PhD in Child Clinical Psychology from the University of Washington in 1997, which included a clinical internship at Stanford University, and received postdoctoral fellowship training at the UC Berkeley Institute of Human Development during 1997-1998.
Dr. Hessl’s career has focused on Fragile X-associated disorders since 1998, having published hundreds of peer-reviewed journal articles on these topics to date. Dr. Hessl also serves on the National Fragile X Foundation’s Clinical Trials Committee.
Elizabeth Berry-Kravis
Elizabeth Berry-Kravis, MD, PhD, established the Fragile X Clinic and Research Program at Rush University Medical Center in 1992. She studies Fragile X syndrome medical issues, epilepsy, and psychopharmacology and provides care to over 700 patients with FXS. She has been a leader in translational research, including the development of outcome measures and biomarkers, natural history studies, newborn screening, and particularly clinical trials of new targeted treatments.
Dr. Berry-Kravis’s laboratory studies the cellular roles of the Fragile X protein (FMRP), its relationship to phenotypes, and the optimization of genetic testing methods. She is a longstanding member of the NFXF Scientific and Clinical Advisory Committee, and Clinical Trials Committee, and is the principal investigator of the CDC-funded FORWARD-MARCH natural history project for Fragile X.
Dr. Berry-Kravis attended the University of Notre Dame for her undergraduate studies and the University of Chicago for her doctoral degrees (MD and PhD) and training in pediatric neurology.
Barbara Haas-Givler
Barbara Haas-Givler, MEd, BCBA, is a board-certified behavior analyst in Lewisburg, Pennsylvania. Ms. Haas-Givler has extensive experience in special education. She has served in many different capacities over the course of her career, including classroom teacher, administrator, educational consultant, behavior analyst, and research associate for clinical pharmaceutical trials.
Ms. Haas-Givler has been a long-time member of the Fragile X community. Her dedication to providing families living with Fragile X strategies for success has greatly impacted over the years. She is also a member of the NFXF Clinical Trials Committee.
Craig A. Erickson
Craig A. Erickson, MD, is a professor of Psychiatry at Cincinnati Children’s Hospital Medical Center and the University of Cincinnati College of Medicine-Affiliated. Dr. Erickson leads a neurodevelopmental clinical and research group focused on improving clinical care through research discovery. He is the director of the Cincinnati Fragile X Research and Treatment Center, one of the largest such programs in the world. He serves as the chair of the Clinical Trials Committee organized by the National Fragile X Foundation and is a leader in translational medicine efforts in Fragile X syndrome, autism, and related disorders. Additionally, he is the director of research in the Division of Psychiatry at Cincinnati Children’s Hospital.
Cora Taylor, Ph.D.
Cora Taylor, Ph.D. is an associate professor, clinical psychologist and Chair of the Department of Developmental Medicine at Geisinger. Dr. Taylor completed graduate training at the University of Tennessee and a research and clinical postdoctoral fellowship at Vanderbilt University. She has expertise in the diagnostic evaluation of children with a range of developmental concerns. At Geisinger, Taylor conducts research, leads the phenotypic battery selection, and oversees a variety of research protocols. Her focus is on the phenotypic characterization of people with rare genetic conditions. Taylor has experience in engaging both families and family-based organizations for rare genetic conditions in research through online participation that is offered internationally to interested patients and families.
Lauren Ethridge
Dr. Lauren Ethridge is a neuroscientist specializing in EEG biomarker development as outcome measures for clinical trials in Fragile X Syndrome. She is particularly interested in disability advocacy, and in translating basic science work into clinical and community applications that help improve health in Fragile X.
Nicole Tartaglia
Nicole Tartaglia, MD, attended university and medical school at the University of Colorado. She completed her training in general pediatrics at Children’s Hospital Los Angeles, and fellowship training in developmental-behavioral pediatrics at the University of California Davis MIND Institute, where her research focused on children and adults with developmental disabilities, chromosomal abnormalities, Fragile X syndrome, and autism spectrum disorder. She also obtained her master’s in clinical investigation from the University of Colorado Graduate School.
Since 2007, Dr. Tartaglia has worked as faculty for the Colorado School of Medicine at Children’s Hospital Colorado in the Department of Pediatrics Section of Developmental Pediatrics, where she founded and directs the eXtraordinarY Kids Clinic for children and adolescents with sex chromosome disorders, and is also the director of the Denver Fragile X Clinic. In these clinics, she leads multidisciplinary teams that include medical providers, genetic counseling, psychology, speech-language therapy, occupational therapy, nursing, and social work, and collaborates extensively with community providers, therapists, and schools to provide optimal care for these special populations. She also evaluates and treats children with general developmental delays, autism spectrum disorder, ADHD, and other neurogenetic disorders.
Dr. Tartaglia has federally funded research projects evaluating natural history and outcome measures in sex chromosome disorders and Fragile X and collaborates with national networks of clinics to develop best practices for treatments of these conditions. She is also very active in clinical trials of targeted treatment medications for neurobehavioral features and developmental disabilities. Dr. Tartaglia is also a member of the NFXF’s Clinical Trials Committee.
Anne Hoffmann
Anne Hoffmann, PhD, CCC-SLP, is an assistant professor and speech-language pathologist in the Communication Disorders & Sciences and Pediatrics departments at Rush University. Her research examines language and social communication development in individuals with neurodevelopmental disorders, especially Fragile X syndrome. Her teaching and clinical interests focus on pediatric speech and language disorders. Hoffmann completed her doctoral work at The Ohio State University and then completed her post-doctoral position in pediatrics at Rush University.
Anna De Sonia
Anna joined the NFXF in 2024. She found her way to the Fragile X community through her many years of work as a clinical research coordinator at Rush University Medical Center in Chicago. There she worked on research in the pediatric neurology division, with a special interest in Fragile X. Anna earned her bachelor’s in psychology and obtained a clinical research coordinator (CCRC) certification through the ACRP. She likes to take time to enjoy life’s simple pleasures, loves traveling and exploring new cultures, and spending quality time with her dog, family and friends.
Hilary Rosselot
Hilary joined the NFXF team in 2019. Prior to joining the NFXF team, she worked at the Cincinnati Fragile X Research and Treatment Center for several years. She has experience as a clinical research coordinator across many types of clinical trials and served as the clinical research manager for the Cincinnati program. She earned a bachelor’s in psychology, an MBA, and was previously a SOCRA-certified clinical research professional (CCRP). She enjoys spending time with her family, including her young daughter and Boston Terrier, as well as curling up with a good book.


