School of Medicine


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  • Alfredo M. Valencia

    Alfredo M. Valencia

    Postdoctoral Research Fellow, Psychiatry

    Bio Overview: Biochemist and neurobiologist interested in uncovering the molecular basis of human disorders and disease. Currently performing postdoctoral research at Stanford University investigating the impact of chromatin regulatory processes in neurodevelopment.

    Research Interests: Freddy Valencia graduated with a PhD in Chemical Biology at Harvard and is currently a Science Fellow at Stanford University. His long-term research interests aim to uncover the underlying epigenetic mechanisms implicated in the development of human disorders and diseases. In Dr. Cigall Kadoch's laboratory at the Dana-Farber Cancer Institute, his work examined the biochemical, structural, and functional consequences that perturbations to the mammalian SWI/SNF (mSWI/SNF or BAF) chromatin-remodeling complex have in the cell. More precisly, his research has examined the molecular mechanisms through which SMARCB1 mutations are implicated in cancer and neurodevelopmental disorders and contributed to the characterization of the modular organization of the mSWI/SNF protein complexes.

    Higher Education Advocacy: Born and raised in Santa Ana, California to parents who immigrated from Mexico, Freddy is passionate about teaching and mentoring students from underrepresented groups in the sciences. Through his involvement in programs like Breakthrough Collaborative while in high school, Tutors for a Cause while at Pitzer College, and Dana-Farber?s Science Enrichment Program at Harvard University, he aims to serve as a mentor, role model, and agent of change for underrepresented minority students in their pursuit of higher education. During his graduate studies, Freddy was elected as Co-President of the Minority Biomedical Scientists of Harvard (MBSH) student organization and was one of two inaugural Diversity and Inclusion Fellows for Harvard University's Graduate School of Arts and Sciences. Through these roles, he worked to foster collaboration and a sense of community between students of color throughout the Harvard Community.

  • Keara E. Valentine

    Keara E. Valentine

    Postdoctoral Research Fellow, Psychiatry

    Bio Keara E. Valentine, Psy.D., is a postdoctoral fellow at Stanford University School of Medicine in the OCD and Related Disorders Track, where she specializes in the assessment and treatment of OCD and related disorders. Dr. Valentine utilizes behavioral-based therapies including Cognitive Behavioral Therapy (CBT) and Exposure and Response Prevention (ERP) with children, adolescents, and adults experiencing anxiety-related disorders.

    Dr. Valentine completed an APA accredited pre-doctoral internship at Alexian Brothers Behavioral Health Hospital, where she complete a rotation in OCD and anxiety disorders and a rotation in Eating Disorders. Dr. Valentine has experience working with individuals with OCD, anxiety, and/or eating disorders at various levels of care including outpatient, partial hospitalization, residential, and inpatient.

  • Peter Johannes van Roessel

    Peter Johannes van Roessel

    Clinical Associate Professor, Psychiatry and Behavioral Sciences

    Bio Dr Peter van Roessel, M.D. Ph.D, completed his MD at Stanford University and his residency training in psychiatry at Columbia University and the New York-Presbyterian Hospital in New York City. Prior to joining the clinical faculty at Stanford, he worked for several years as Associate Director of the general research unit of the New York State Psychiatric Institute, a premier state-funded research hospital affiliated with Columbia University, where he provided clinical care for individuals participating in research studies across a spectrum of psychiatric illness, including treatment resistant mood disorders, anxiety disorders, psychosis and substance use disorders.

    At Stanford, he sees adult mood and anxiety disorders outpatients through the Evaluations Clinic and Depression Clinic and participates in resident training and patient care as a supervisor in psychodynamic psychotherapy and as an attending physician in Continuity Clinic. As a member of the department's Rodriguez Translational Therapeutics Lab, he sees individuals with obsessive-compulsive spectrum disorders for evaluations and research-protocol driven clinical treatment, and contributes to clinical neuroscience studies pioneering rapid-acting interventions in OCD.

    Dr van Roessel pursued research training basic neuroscience prior to his clinical training, completing an MPhil in Biology via the Open University, UK, for research performed at the Max Planck Institute for Developmental Biology in Tübingen Germany, and a PhD in molecular and developmental neurobiology in the laboratory of Dr Andrea Brand at the University of Cambridge, UK. More recently, he has contributed to work in the lab of Dr Julia Kaltschmidt (Sloan Kettering Institute, now Stanford) on studies of GABAergic/Glutamatergic interneuronal circuity in mouse. In the Rodriguez Lab, he is pursuing clinically-motivated research interests related to the nature and neural correlates of insight in obsessive-compulsive and related disorders. He has additionally received a 2018 NARSAD Young Investigator Award to pursue a novel glutamatergic rapid-acting treatment for OCD.

  • Andrea Varias

    Andrea Varias

    Casual - Non-Exempt, Psych/Public Mental Health & Population Sciences

    Current Role at Stanford Serving member on the Lab?s Leadership Executive Team as lead clinical research coordinator for studies involving individuals with obsessive-compulsive disorder (OCD) and anxiety-related disorders (including Hoarding Disorder and Post-Traumatic Stress Disorder)

    ? Conversant in goals, mission and priorities of the Lab and University as primary contact for sponsors, regulatory agencies, Clinical Trials Research Unit, and study participants.
    ? Demonstrates a high degree of professionalism, initiative and flexibility while managing and auditing all aspects of clinical trials, including development, study start-up, implementation, compliance, and closure of IRB- and FDA-regulated studies.
    ? Leads a 10-person team of research coordinators and undergraduate assistants focused on research projections/goals, protocol management, and adverse event reporting.

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