EXHIBIT 99.1

                         GERON PRIORITIZES R&D RESOURCES

MENLO PARK, CA - JANUARY 21, 2003 -- Geron Corporation (Nasdaq: GERN) announced
today that it is changing its organization in order to concentrate its resources
on the continued development of its lead anti-cancer product, GRN163, and its
regenerative medicine products based on human embryonic stem cells (hESCs). In
the process, Geron is reducing its research staff by 29 employees and its
support staff by 11 employees.

This reprioritization of human and financial resources reflects the progress of
Geron's anti-cancer drug, GRN163, and hESC-based therapies. The company has
completed preclinical efficacy studies and is now engaged in preclinical
toxicology studies of GRN163 in anticipation of filing an IND and beginning
Phase 1 clinical trials. At the same time, Geron and its collaborators are
engaged in animal proof-of-concept studies for hESC-derived neural cells for
spinal cord injury and Parkinson's disease, hematopoietic cells for
transplantation, and cardiomyocytes for heart failure, and are planning similar
studies for hESC-derived pancreatic islet cells. Successful completion of those
studies will lead to human clinical trials.

"At our current stage in product development, we are spending more externally,
on contract manufacturing of GRN163, preclinical animal studies, and the Phase 1
clinical trial ongoing at Duke," said David L. Greenwood, Geron's senior vice
president and chief financial officer. "We have reduced internal research
staffing and our total budget significantly, without affecting the critical path
of product development. We have a complement of 51 employees in Menlo Park,
supplemented by 27 scientists at the Roslin Institute in Scotland and teams in
several academic labs who are working on hESC programs in collaboration with
us."

"No company likes to lose talented researchers, and Geron's people are
exceptionally talented," said Thomas B. Okarma, Ph.D., M.D., Geron's president
and chief executive officer. "But we're committed to doing what it takes to
achieve the key product development milestones that we expect to meet over the
next 12 months, including: (i) filing an IND for GRN163 and starting clinical
trials; (ii) completing enrollment in our clinical trial of the telomerase
vaccine at Duke University; and (iii) putting hESC-derived cells of various
types into animal models as a step toward IND-enabling studies. Today we have
cardiomyocytes, two types of neural cells -- dopaminergic neurons and
oligodendrocytes -- and hematopoietic cells in animal models, and we hope to add
insulin-producing pancreatic islet cells soon. We want to demonstrate in vivo
efficacy and safety for all these cell types during 2003."

"We have maintained a strong balance sheet with more than $47 million in cash as
of December 31, 2002," Mr. Greenwood said. "We will allocate that capital to the
achievement of our development milestones over the next two years."

GRN163 is a short thiophosphoramidate oligonucleotide drug that specifically
inhibits the enzyme telomerase--a novel approach to treating cancer. Telomerase
is not expressed in most normal cells and tissues, but is abnormally expressed
in all major cancer types. The activation of telomerase enables cancer cells to
maintain telomere length and resist apoptosis (programmed cell death), thereby
enabling unlimited cell growth and resistance to cytotoxic drugs. By inhibiting
telomerase, GRN163 should cause cancer cells to stop proliferating and enter
crisis. Geron and its collaborators have already demonstrated these effects in
animal models of human brain cancer, prostate cancer, cervical cancer, lymphoma
and myeloma, and similar effects in vitro with lung cancer and many other cancer
cell types.

Geron is widely recognized as the world leader in developing hESC technology.
Geron is developing treatments for spinal cord injury and Parkinson's disease
using hESC-derived





neural cells, treatments for heart disease using hESC-derived cardiomyocytes,
and treatments for diabetes using hESC-derived pancreatic islet cells. Geron has
an exclusive commercial license to develop therapies based on these cell types
under the WARF patents on hESCs. In addition, Geron owns more than 70 issued or
pending patents covering hESC technology.

This news release may contain forward-looking statements made pursuant to the
"safe harbor" provisions of the Private Securities Litigation Reform Act of
1995. Investors are cautioned that such forward-looking statements in this press
release regarding future applications of Geron Corporation's technology and
future financial projections constitute forward-looking statements involving
risks and uncertainties, including, without limitation, risks inherent in the
development and commercialization of potential products, dependence on
collaborative partners, need for additional capital, need for regulatory
approvals or clearances, and the maintenance of our intellectual property
rights. Actual results may differ materially from the results anticipated in
these forward-looking statements. Additional information on potential factors
that could affect our results and other risks and uncertainties are detailed
from time to time in Geron's periodic reports, including the quarterly report on
Form 10-Q for the quarter ended on September 30, 2002.

Contact:
Geron Corporation
David L. Greenwood
Chief Financial Officer
650-473-7700


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