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Who We Are

We offer testing that measures how your cancer cells will respond to drugs BEFORE you receive them.


Founded in 1995 by Dr. Robert Nagourney, Nagourney Cancer Institute, formerly Rational Therapeutics, is a fully accredited federal and state licensed laboratory with the primary purpose of personalizing cancer patient treatments.


We also help pharmaceutical and biotechnology firms streamline their research and development process for bringing new compounds to market.

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Cancer Research

Our Founder and Medical Director:
Robert Nagourney, MD

Dr. Robert Nagourney has been internationally recognized as a pioneer in cancer research and personalized cancer treatment for over 20 years. 

He is the founder and medical director of Nagourney Cancer Institute (formerly Rational Therapeutics) and Clinical Professor at the University of California, Irvine School of Medicine. Also, he is a practicing oncologist and triple board certified in Internal Medicine, Medical Oncology and Hematology.

Dr. Nagourney has been featured on national and local television such as CNN, ABC World News Tonight, CNBC, Extra, Hard Copy, Fox 11 Los AngelesKTLA5 & ABC7 (Los Angeles), WLWT5 & WCPO9 (Cincinatti), 13WHAM (Rochester, NY) and major newspapers such as the Wall Street Journal, Orange County Register, and Cincinatti Enquirer.  He has also been featured internationally such as on Australian TV show Good Medicine, and Univision's Primer Impacto.

With more than 20 years’ experience in human tumor primary culture analyses, Dr. Nagourney has authored more than 100 manuscripts, book chapters and abstracts including publications in the Journal of Clinical Oncology, Gynecological Oncology and The Journal of National Cancer Institute.

As co-investigator on national cooperative trials, Dr. Nagourney is recognized for the introduction of Cisplatin/Gemcitabine doublets in the treatment of advanced ovarian and breast cancers.

He has lectured at leading medical schools and centers including Georgetown, Memorial Sloan-Kettering,  NYU, Yale, University of Chicago, etc. and internationally in such places as Brazil, Netherlands and Mexico.

In March 2013, his book Outliving Cancer was released by Basic Health Publications.  Outliving Cancer is Dr. Nagourney's story of discovery, the biology of cancer and how best to treat it.  

He has also served as a journal reviewer and on the editorial boards of several journals including Clinical Cancer Research, British Journal of Cancer, Gynecologic Oncology, Cancer Research and the Journal of Medicinal Food.

Dr. Nagourney’s Educational Background

Undergraduate Education

Boston University, BA Chemistry
Summa Cum Laude
Phi Beta Kappa with Distinction in Biochemistry

Medical Education

McGill University, Montreal, Canada
University Scholar


Internal Medicine
University of California Irvine, Long Beach VA Medical Center


Medical Oncology
Georgetown University Hospital, Washington DC


Scripps Clinical & Research Institute, La Jolla CA
Recipient of the Scripps Institute Young Investigator Award

About Our Laboratory

Founded in 1995 by Dr. Robert Nagourney, Nagourney Cancer Institute (formerly Rational Therapeutics) is a fully accredited federal and state licensed laboratory with the primary purpose of personalizing cancer patient treatments.

Steve Evans, Chief Operations Officer, oversees the day-to-day operations of the laboratory, including personnel and data analyses.

With more than 25 years of doing cancer research, he has co-authored five manuscripts, 34 research abstracts and has presented research findings at the annual meetings of the American Association of Cancer Research and the American Society of Clinical Oncology.

Most types of cancers can be tested by Nagourney Cancer Institute and samples arrive from all over the US and internationally. 

Since the test involves living cancer cells, the samples MUST arrive in a very timely manner, within 24-36 hours.