Lea Grinberg, MD, PhD

Principal Investigator
Associate Professor in Residence

Dr. Grinberg is a neuropathologist specializing in brain aging and associated disorders. She received her medical and doctorate degrees in São Paulo, Brazil. In 2003, Dr. Grinberg, along with colleagues from several disciplines founded a brain bank in São Paulo, Brazil, which has developed into an extremely prolific and highly regarded institution. Her doctorate work was focused in the neuropathology of frontotemporal lobar degeneration. From 2007 to 2009, Dr.

Maryana Alegro Ribeiro, PhD

Postdoctoral Fellow

Alexander Ehrenberg

Staff Research Associate

Alex graduated from UC Berkeley in 2017 with a B.A. in integrative biology (evolution, ecology, and organismal biology division) and molecular and cellular biology (developmental genetics division). He started at UCSF in Spring 2012 working under Dr. Pierre-Antoine Gourraud in the Multiple Sclerosis Genetics Research Lab. There, he developed skills in computational biology, informatics, and statistics.

Rana Eser

Lab Manager

Rana is an undergraduate student at UC Berkeley ('18) where she is majoring in molecular and cellular biology with an emphasis in neuroscience. As a high school student she worked at the UC Davis Center for Regenerative Cures and the UC Davis Genomics Center, practicing stem cell culture. Rana joined the Grinberg lab in Fall 2014 where she now studies the pathology of tauopathies, focusing on brain regions that control sleep regulation. In 2016 she received the Berkeley Undergraduate Research Apprentice Program Summer Award for her work in the Grinberg Lab.

Wing Hung Lee

Lab Helper

Wenda joined the Grinberg lab in March 2015 to support the group's efforts in researching brain aging and associated disorders. Prior to moving to the United States in 2014, Wenda worked as an executive assistant in a private company in Hong Kong for 19 years, assisting in the overall management and operation of the company. In the Grinberg lab, Wenda supports and manages the administrative needs. She intends to continue working in the field of medical research, particularly in the specialty of brain disease.

Joseph Oh

Staff Research Associate

Joseph graduated from UC Berkeley (’17) with honors in molecular and cell biology (neurobiology). He began his research career in UCSF's Weill Institute for Neurosciences in Summer 2014 as a research assistant for Dr. William Seeley's Selective Vulnerability Research Lab. In Seeley’s lab, Joseph assisted with human brain banking and neuropathology studies in Frontotemporal Dementia. He then joined Grinberg lab in Fall 2015, where he now studies the neurobiological basis of sleep.

Dulce Ovando Morales


Dulce received her BSc in Physiology with a minor in Chemistry from San Francisco State University in 2016. Prior to joining the Grinberg lab in 2017, Dulce worked with various non-profit organizations that focused on increasing access to free medical care in San Francisco and rural communities around the globe by setting up temporary mobile clinics and developing essential infrastructure. In the lab, Dulce works on various projects investigating the pathogenesis of neurodegenerative diseases as the Grinberg lab's lead histologist.

Cathrine Petersen

Lab Assistant

Cathrine is an undergraduate student at UC Berkeley ('19) where she is double majoring in molecular and cellular biology (neurobiology emphasis) and statistics. She joined the Grinberg lab in Fall 2016 where she assists in studying the neuropathological changes underlying clinical heterogeneity in Alzheimer disease. Cathrine intends to pursue a career in medical research in the field of neurobiology.

Panos Theofilas, PhD

Assistant Adjunct Professor

Dr. Theofilas is Assistant Professor at the Memory and Aging Center, UCSF. He obtained his bachelor and masters’ degrees in Neuroscience at the University of Edinburgh, UK, and his doctorate at the University of Bonn, Germany, studying apoptosis signaling pathways, mitochondria dysfunction and excitotoxicity in animal models of epilepsy.