Principal Investigator

Geoff Wahl

Daniel and Martina Lewis Chair

In 1970, Dr. Wahl was awarded his B.A. in Bacteriology from the University of California, Los Angeles. In 1976, he received a Ph.D. in Biological Chemistry from Harvard University. He was a Research Assistant at the University of Utah from 1975 to 1976 and a Postdoctoral Fellow at Stanford University from 1976 to 1979. He then joined the Salk Institute as an Assistant Professor in the Molecular Biology and Virology Laboratory. Dr. Wahl received his present appointment as Professor in the Gene Expression Laboratory in 1989. Dr. Wahl is an Adjunct Professor in the Biology Department at the University of California, San Diego.

Dr. Wahl’s personal statement
Research Administrative Assistant

Sally Ganley

Research Administrative Assistant

Sally Ganley is a Research Administrative Assistant III. She has been at the Salk Institute since June 2006 and she joined the Wahl lab in July 2012.
Staff Scientists

Chris Dravis

Staff Scientist

Chris Dravis, Ph.D. obtained a B.A. in 2001 in Biology and Chemistry from University of Pennsylvania. In 2009, He received a Ph.D. in Cell and Molecular Biology from University of Texas Southwestern Medical Center. Chris joined the Wahl Lab in 2012.

Yao-Cheng (Leo) Li

Staff Scientist

Yao-Cheng (Leo) Li, Ph.D. graduated with a B. S. in Plant Pathology, 1992 from National Chung-Hsing University and a M.S. in Biochemistry, 1994 from the National Yang-Ming University, Taiwan. He graduated in 2002 with a Ph.D. in Pharmaclogy from the State University of New Jersey and Robert Wood Johnson Medical School, New Jersey. Leo joined the Wahl Lab in 2003.
Research Associates

Chi-Yeh (Jay) Chung

Research Associate

Chi-Yeh (Jay) Chung graduated with a B.S. in Biological Sciences in 2004 from National Sun-Yat Sen University, Taiwan. He then worked as a Research Assistant in Institute of Biomedical Sciences in Academia Sinica, Taiwan, from 2006-2008. He came to the U.S. in 2008 and received a M.S. in Biotechnology from the University of California, Irvine in 2010. He then moved to New York and received his Ph.D. in Biomedical Sciences from Icahn School of Medicine at Mount Sinai in 2016. He joined the Wahl lab in the summer of 2016 to study mammary stem cell state regulation using bioinformatic and epigenetic approaches.

Kathleen (Kathy) DelGiorno

Research Associate

Kathleen (Kathy) DelGiorno, Ph.D. graduated with a B.S. in Biology from the United States Air Force Academy in 2005. She went on to serve as a Biological Research Officer in the U.S. Air Force for two years before working as a Research Associate studying pancreatic and adrenal cancers at the Translational Genomics Research Institute; simultaneously earning an M.S. from the University of Florida in Pharmacy. She earned her Ph.D. in Molecular Genetics and Microbiology from the State University of New York at Stony Brook in 2012, first studying pancreatic cancer development at Stony Brook University and then at Mayo Clinic Florida. She completed three years of Postdoctoral research at Fred Hutchinson Cancer Research Center investigating the role of interstitial fluid pressure to treatment resistance in pancreatic cancer and joined the Wahl lab in the Spring of 2016 to study cellular heterogeneity in early pancreatic tumor development.

Raj Giraddi

Research Associate

Raj Giraddi did his PhD at the University of Cambridge, UK in 2013. He worked on the proliferation kinetics of mammary stem cells in Dr. John Stingl’s lab and discovered that luminal subpopulations are largely unipotent and estrogen receptor cells are highly proliferative than what was perceived. He then did his postdoctoral training in Professor Cedric Blanpain lab in Brussels, Belgium where he developed multi-allelic mouse models of breast cancer for lineage retracing experiments and identified a potential cancer stem cell marker. In 2016, he joined Wahl lab to understand the heterogeneity in normal mammary glands, breast cancer and clonal cooperations using single cell technologies. He complains that San Diego is too hot, he proclaims to eat the spiciest food and enjoys occasional IPAs with Geoff.
Research Assistant

Gidsela Luna

Research Assistant

Gidsela Luna is a Third year undergraduate at UCSD and is majoring in Biochemistry/Cell Biology. Gidsela Luna joined the Wahl Lab in June 2015.

Annie Odelson

Research Assistant

Annie Odelson is a recent graduate of UCLA, where she received her B.Sc. in Microbiology, Immunology, and Molecular Genetics. She joined the Wahl lab in July of 2018.

Cynthia Ramos

Research Assistant

Cynthia Ramos earned her BS degree in Medical Technology from Manila, Philippines. She was a Med/Biol. Laborantin in Basel, Switzerland then she moved to San Diego and worked as a Research Assistant and Lab Manager at the Dorris Neuroscience Center. She joined the Wahl lab in March 2015 where she currently holds the position of Research Assistant III/Lab Manager.

Luke Wang

Research Assistant

Luke Wang is a first year undergraduate at UCSD majoring in Biochemistry and Cell Biology. Luke joined the lab in March 2014.
Lab Technicians

Vikas Gubbala

Lab Technician

Vikas is a second year undergraduate in UCSD. He joined the lab in March 2018.
Grace Lee

Grace Lee

Lab Technician

Grace is a third year undergraduate at UCSD and is majoring in general biology. She joined the Wahl Lab in May 2018.

Razia Naeem

Lab Technician

Razia Naeem graduated with a B.S. in Biochemistry from Simmons College and a M.S.E. in Chemical Engineering from The University of Texas at Austin. She joined the Wahl lab in February 2018.

Jasmine-Patricia Padilla

Lab Technician

Jasmine-Patricia Padilla

Eric Ramirez

Lab Technician

Eric Ramirezis a fourth year undergraduate at UC San Diego. He joined the Wahl lab in June 2016 as a lab technician.

Crystal Tsui

Lab Technician

Crystal Tsui is a third year undergraduate at UCSD and is majoring in Microbiology. She joined the Wahl Lab in October 2016 as a lab technician working under Kathy DelGiorno in studying pancreatic cancer.
Past and Present Summer Student Rotation

Brandon Cooper

Summer Intern

Brandon Cooper is entering his third year of undergraduate studies at UCLA. He is a Molecular, Cellular and Developmental Biology major. Brandon joined the Wahl Lab in 2014 and works as a summer intern.

Matthew Madina


Matthew Madina
Wahl Lab Alumni

Charlene Huang


Karissa Huang


Claire Johns


Annabelle Kraus


Brianna Matias


Maya Ridinger


Rose Rodewald


Alexis Roth


Benjamin T. Spike


Christy Trejo


Jaslem Herrera Valdez


Lisa Zeng

Toledo, Ohio