current members

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Rajat Rohatgi

Associate Professor of Biochemistry and of Medicine



I completed my Ph.D. at the warm and sunny University of Southern California in Los Angeles and moved to the much greener and cooler Northern California to pursue my Postdoc in Raj’s lab at Stanford University. I was a medicinal chemist and a pharmacologist in my previous life. In the Rohatgi lab, I got the exciting opportunity to address one of the biggest challenges facing oncology and drug development, which is the emergence of drug resistance. What I do here is “Discovery Biology” where I use the latest genetic screening strategies to uncover new drug targets, biomarkers for drug resistance, and new insights into signaling mechanisms. When I am not in the lab, I like to go for hikes on the Santa Cruz mountain range or for a drive along the pacific coast.   


Ramin Dubey

Postdoctoral Scholar

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Maia Kinnebrew

Graduate Student

I was born in Guatemala and grew up in Orange County, California. Since then, I have continued to move north on the North American continent, first to the University of California at Santa Barbara, where I received a BA in Biology, and now to Stanford where I am a PhD candidate in the Rohatgi lab. My project focuses on the molecular mechanisms of Hedgehog signaling, with a emphasis on the EvC complex and Smoothened. While not in the lab, I enjoy fishing, camping, cooking and wine/beer tasting, especially in combination!



I was born and raised in beautiful Honolulu, Hawaii.  Excited about the ever expanding field of Neurobiology, I left my tropical paradise to study spinal cord development at the University of California, Los Angeles where I obtained a Ph.D. in Neuroscience in the laboratory of Bennett Novitch. In the Rohatgi Lab, my interests are still in developmental signaling pathways. Through the help of incredible collaborators, I have brought an adherent stem cell culture system to the lab and have been using CRISPR-mediated techniques to study Hedgehog signal transduction in a neural context. When I am not in the lab, I am probably exploring the Bay Area and enjoying a nice wine or cider.


Jennifer Kong

Postdoctoral Scholar





Andres Lebensohn

Postdoctoral Scholar

Originally from Buenos Aires, Argentina, I emigrated to California mainly to surf, but during my time on dry land I also got my undergraduate degree in Molecular and Cell Biology at the University of California, Berkeley.  Under the tutelage of Daniel Koshland, I took my first steps in the path of research studying enzymology. I then pursued my Ph.D. in Cell and Developmental Biology in the laboratory of Marc Kirschner at Harvard Medical School, where I studied the regulation of actin assembly through biochemical reconstitution. As a post-doc in the Rohatgi lab I study WNT signaling, a fundamental pathway that orchestrates embryonic development, controls tissue renewal and regeneration, and can drive cancer when it becomes defective. Using functional genomics and biochemistry, I uncovered new regulatory mechanisms at all levels of the pathway and discovered a new mode of signaling by R-spondins, secreted growth factors that strongly potentiate WNT signals during development and in adult stem cells.  Outside of the lab, I like to spend time exploring museums and the California outdoors with my wife Alexandra and our children, Gabriel and Anabella.



I grew up in beautiful Abiquiu, New Mexico where I was exposed to the rich cultural influences of the Spanish Colonial and Native American traditions. After graduating from New Mexico Tech with a BSc in Biology and an MSc in Chemistry, I transferred my synthetic chemistry expertise to focus on developmental cell signaling problems in Raj's Lab. Focusing on the Hedgehog pathway, I study how extracellular signals are transmitted by a G-protein coupled receptor called Smoothened across the plasma membrane and into the cell. My work shows that Smoothened activity is sensitive to cholesterol not only as a required component for supporting normal receptor activity, but as a signaling molecule capable of activating the receptor and triggering Hedgehog pathway activation.


Giovanni Luchetti

Graduate Student





Bhaven Patel

Research Assistant

I grew up in the Bay Area and attended Stanford as an undergrad. It was a tough decision, but I decided to take my talents to the Rohatgi lab, where I’ve worked on both the WNT and Hedgehog signaling pathways. Using computer science to explore biological questions interests me, so I’ve developed bioinformatic tools to analyze sequencing data from genetic screens and automate cilia imaging and quantification. If I’m not in lab, you can find me exploring the outdoors, sipping on a refreshing brew, and playing/watching sports!



I grew up in San Jose from where the sun and sand of Southern California drew me to study Cell Biology at the University of California, San Diego. After a few research projects and inspiring classes during my undergraduate studies, I wanted to dive deeper into the fundamental properties of cells, so I decided to move back to the Bay Area to complete a PhD in the Biochemistry Department at Stanford. In the Rohatgi Lab, I (along with a few others in the lab) aim to discover how mammalian cells sense and respond to osmotic stress using a combination of biochemical assays and genetic screens. Outside of lab, I like to go to the beach, watch baking shows, and explore the city.


Chandni Patel

Graduate Student

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Ganesh Pusapati

Research Scientist


I was born and raised in Vizag, a beautiful coastal city in Southern India. After completing my Masters in Biotechnology from the University of Hyderabad, I moved to Germany to begin my research career. I obtained a Ph.D. degree in the field of Cell Biology more specifically in the areas of protein trafficking and signal transduction.  After completing a short post-doc in the Pfeffer lab at Stanford University, I joined the Rohatgi lab in early 2013. My major research interest is to understand the biochemical and genetic basis of hedgehog signal transduction. I enjoy spending time with my family and playing cricket.



I grew up in Germany and received my undergrad degree in molecular and cellular biology from the University of Heidelberg, Germany. For my graduate work in the lab of Dirk Görlich, I moved to the Max Planck Institute for Biophysical Chemistry in Göttingen. In the Rohatgi lab, I am studying how cells use liquid-liquid phase transitions to dynamically coordinate biochemical processes in space and time. Outside the lab, I enjoy exploring the Bay Area on my road bike.



Broder Schmidt

Postdoctoral Scholar