About Us

Spread the word!


Our goal: As a university-based academic research group, our primary purpose is to improve our understanding of hyposalivation, making the knowledge and data we generate freely available, so that we and others can use that knowledge to develop novel diagnostics, prognostics and therapeutics to improve human oral health. Our not-for-profit research is being conducted in the academic laboratory of Dr. David Relman in collaboration with a clinical team of Sjögren’s Syndrome experts at the UCSF School of Dentistry.

David Relman, MD
David Relman Headshot
David Relman is the principal investigator of this research project. He is the Thomas C. and Joan M. Merigan Professor of Medicine and of Microbiology and Immunology at Stanford University. He is also the Chief of Infectious Disease at the Veteran’s Affairs Hospital in Palo Alto and served as the President of the Infectious Diseases Society of America from 2012-2013. To learn more about David, please visit the Relman Laboratory Website, or visit his faculty profile at the Stanford University School of Medicine.


Diana Proctor, Ph.D.
IMG_0337Diana Proctor obtained a Ph.D. at Stanford University in the department of Microbiology & Immunology at Stanford University, a M.S. at Smith College as a U.S. Environmental Protection Agency STAR Fellow, and is currently a postdoctoral fellow at Stanford University. You may follow her on twitter @hyposalivation or visit her LinkedIn Profile to learn more about her.


Susan Holmes, Ph.D.

susan-holmes-300x300Susan Holmes is a Professor in the  Statistics Department and in Bio-X at Stanford University. Her research interests include computational statistics, in particular, nonparametric computer intensive methods such as the bootstrap and MCMC. Her research group developed the R-based Bioconductor package Phyloseq for the analysis of microbiome data. For more information about Susan, see the website for the Holmes Research Group.


Mark I. Ryder, D.M.D.
Dr. Ryder is a Principal Investigator on the study. He is also Professor and Chair of the department of Periodontology as well as the Director of the Postgraduate Program in Periodontology at the University of California, San Francisco (UCSF), where he has been a faculty member for 35 years. He has served as the Principal Investigator, Co-Principal Investigator, Co-Investigator, and/or examiner for several government and industry sponsored clinical studies.


Yoga Rajendran, D.D.S.

HeadshotAs a study clinician, Dr. Rajendran will be performing oral examinations at screening exams. She will also collect samples at study appointments. Dr. Rajendran is a board-certified periodontist. She received her BDS from SRM University, a certificate in periodontics from the UCSF School of Dentistry, and an MS in oral & craniofacial sciences from the UCSF School of Dentistry in 2016. Dr. Rajendran is an assistant professor in the Department of Orofacial Sciences at UCSF and the director of the pre-doctoral program in periodontics.



Meredith Millman, B.S. 

Meri graduated from Smith College with a B.A. in Neuroscience, with the aspirations of becoming periodontist. As the Head Research Coordinator at UCSF, she is in charge of recruitment and manages clinic operations.To learn more about Meredith, visit her on LinkedIn.



Samuel Walker, B.S.

SwalkerSam is an aspiring dentist who earned a B.S. in Biological Sciences from the University of California, Irvine. As the Assistant Research Coordinator at UCSF he assists in the management of clinic visits and data quality.





nidcr_logoThis not-for-profit research project is funded by a National Institute of Dental and Craniofacial
 grant (R01-DE23113-001) to Dr. David Relman.