School of Medicine


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  • Stephen Ruoss

    Stephen Ruoss

    Professor of Medicine (Pulmonary and Critical Care)

    Current Research and Scholarly InterestsWe have an active collaborative project examining basic and clinical aspects of non-tuberculous mycobacterial lung infection in non-immune compromised adults. Studies have examined possible cellular immune mechanisms for increased susceptibility to these infections, and are also investigating aspects of optimal diagnosis and treatment. In addition, a clinical and translational research program is investigating the causes and genetic factors underlying the evolution of bronchiectasis.

  • Christopher John Russell

    Christopher John Russell

    Associate Professor of Pediatrics (Hospital Medicine)

    BioDr. Russell is an Associate Professor of Pediatrics in the Division of Pediatric Hospital Medicine and a board-certified academic pediatric hospitalist at Lucile Packard Children’s Hospital. His clinical responsibilities include caring for children hospitalized for a variety of illnesses. His research focuses on developing evidence-based care for hospitalized children with medical complexity, including acute respiratory infections (such as pneumonia and bacterial tracheitis). His research efforts have been recognized through receipt of the University of Southern California’s Clinical and Translational Science Institute’s KL2 Mentored Research Career Development Award (2014-16), the Academic Pediatric Association’s Young Investigator Award (2015-16), the NIH Loan Repayment Program (2017-2021) and a large grant from the Gerber Foundation (2020-2022). In August 2021, he received a five-year R01 award from the Agency for Healthcare Research and Quality to study bacterial respiratory infections in children with tracheostomy. Outside of his clinical and research responsibilities, Dr. Russell focuses on research mentorship of medical students, pediatric residents, and pediatric hospital medicine fellows as well as improving representation of underrepresented minorities in medicine throughout the continuum of physician training. Dr. Russell is the chair of the Academic Pediatric Association’s Membership, Diversity, and Inclusion Committee and is on the Executive Committee for the Pediatric Research in Inpatient Settings research network. Dr. Russell is active in the AAP and currently serves as an Associate Editor for the journal Hospital Pediatrics.

  • Mirabela Rusu

    Mirabela Rusu

    Assistant Professor of Radiology (Integrative Biomedical Imaging Informatics) and, by courtesy, of Biomedical Data Science

    Current Research and Scholarly InterestsDr. Mirabela Rusu focuses on developing analytic methods for biomedical data integration, with a particular interest in radiology-pathology fusion. Such integrative methods may be applied to create comprehensive multi-scale representations of biomedical processes and pathological conditions, thus enabling their in-depth characterization.

  • Florentine Rutaganira

    Florentine Rutaganira

    Assistant Professor of Biochemistry and of Developmental Biology

    Current Research and Scholarly InterestsWe use chemical tools to decipher the roles of key signaling networks in choanoflagellates, single-celled organisms that are the closest living relatives of animals. Choanoflagellates produce molecular signals essential for intercellular communication in animals and the presence of these molecules in choanoflagellates suggests that signaling components needed to communicate between cells is evolutionarily ancient. We aim to uncover new understanding of animal development, physiology and disease.

  • Brian Rutt

    Brian Rutt

    Professor of Radiology (Radiological Sciences Lab), Emeritus

    Current Research and Scholarly InterestsMy research interests center on MRI research, including high-field and high-resolution MRI technology development as well as applications of advanced MRI techniques to studying the brain, cardiovascular system and cancer.

  • maura ruzhnikov

    maura ruzhnikov

    Member, Maternal & Child Health Research Institute (MCHRI)

    BioChild neurologist and medical geneticist focusing on the diagnosis and management of rare neurologic disorders. Specific interests are in genetic epilepsy syndromes, childhood neurodegenerative and neurometabolic diseases and undiagnosed suspected genetic conditions.

  • Tracy Rydel

    Tracy Rydel

    Clinical Professor, Medicine - Primary Care and Population Health

    BioTracy Rydel is Clinical Professor of Medicine at Stanford University School of Medicine where she holds the positions of Assistant Dean for Clerkship Education and Director, Core Clerkship in Family and Community Medicine. She has also served as the Director of Medical Student Education in the Division of Primary Care and Population Health, and was an Educator-4-CARE faculty from 2017-2020. She is a family physician with a passion for medical education. She completed the Rathmann Family Foundation Fellowship in Patient-centered Care and Medical Education in 2012, is part of the Peer Coaching Program under the Stanford Teaching and Mentoring Academy, and was the Director of the Practice of Medicine Year One Course at Stanford from 2013-2016. She emphasizes patient-centered care in the pursuit of clinical and educational excellence. She is frequently an invited presenter at the national conferences of the Society of Teachers of Family Medicine (STFM), and the Western Group on Educational Affairs (WGEA) regional group of the AAMC; her scholarly work focuses on medical education endeavors, including the scrutiny of systems of medical education assessment for racial/ethnic- and gender-based disparities. She has also presented on topics in nutrition education and the teaching kitchen, working with medical scribes, Entrustable Professional Activities, primary care career recruitment and mentoring, procedures training, time management in ambulatory teaching, communication skills, virtual health and telehealth, and learning communities.

  • Raya Saab

    Raya Saab

    Lindhard Family Professor of Pediatric Cancer Biology

    BioOur laboratory focuses on investigating molecular mechanisms of oncogene-induced tumorigenesis and tumor suppressor pathways, and oncogenic signaling in the pediatric solid tumor rhabdomyosarcoma. Our earlier work identified the tumor suppressors p53 and p18Ink4c as inhibitors of Cyclin D1-driven tumorigenesis in a pineoblastoma model, through senescence induction, and highlighted distinct roles for the the RB and p53 pathways in induction and maintenance of oncogene-induced senescence. We also identified CDK2 as a potential target for inducing senescence in premalignant lesions to inhibit tumor progression.
    Our current focus is on studying oncogenic signaling and tumor suppression in the childhood tumor rhabdomyosarcoma, to identify key mediators of invasion and metastasis, which is the most common cause of treatment failure clinically. We use preclinical in vitro and in vivo models, including murine and human cell lines, and mouse models of disease.
    We have recently uncovered a paracrine role for rhabdomyosarcoma-secreted exosomes in impacting biology of stromal cells. Rhabdomyosarcoma-derived exosomes carry specific miRNA cargo that imparts an invasive and migratory phenotype on normal recipient fibroblasts, and proteomic analysis revealed specific and unique pathways relevant to the two different molecular rhabdomyosarcoma subtypes that are driven by distinct oncogenic pathways. We identified that the driver oncogene in fusion-positive rhabdomyosarcoma, PAX3-FOXO1, modulates exosome cargo to promote invasion, migration, and angiogenic properties, and identified specific microRNA and protein cargo acting as effectors of PAX3-FOXO1 exosome-mediated signaling, including modulation of oxidative stress response and cell survival signaling.
    Our ongoing work is focused on interrogating specific paracrine signaling pathways and molecular mechanisms of metastatic disease progression in rhabdomyosarcoma, for potential therapeutic targeting.

  • Chiara Sabatti

    Chiara Sabatti

    Professor of Biomedical Data Science and of Statistics

    Current Research and Scholarly InterestsStatistical models and reasoning are key to our understanding of the genetic basis of human traits. Modern high-throughput technology presents us with new opportunities and challenges. We develop statistical approaches for high dimensional data in the attempt of improving our understanding of the molecular basis of health related traits.