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Geron Corporation Announces Exercise Of Over-Allotment Option | News... geron.com |
Geron Corporation is a biotechnology company located in Menlo Park, California that specializes in developing and commercialization of products in three specific areas: 1) therapeutic products for cancer that inhibit telomerase; 2) pharmaceuticals that activate telomerase in tissues impacted by cell aging, injury or degenerative diseases; and 3) cell-based therapies derived from human embryonic stem cells for treatment of various chronic diseases[3].
[edit] Drug candidates[edit] Cancer therapiesCurrently, Geron Corporation has two anti-cancer products in human clinical trials. The first, called GRN163L, is a drug that targets telomerase and has been shown to be effective in treating various cancers in animals.[4] In studies conducted at Johns Hopkins University, GRN163L was active against both CD138+ and CD138neg cancer stem cells and eliminated the colony forming potential of both by five weeks. Similarly, GRN163L inhibited the in vitro clonogenic growth of CD138neg Multiple Myeloma Cancer Stem Cells isolated from the bone marrow aspirates of patients with multiple myeloma. Presently Geron is recruiting patients for six clinical trials using GRN163L,[5] including lung cancer, chronic lymphocytic leukemia[6] and solid tumors.[7] Also in trials at Duke University is GRNVAC1, a telomerase vaccine being used on patients with prostate cancer. With the vaccine, Geron plans to inject telomerase into the patient with metastatic prostate cancer to induce the body to produce a more aggressive immune response to the cancer. This vaccine has also produced significant initial results. Geron's progress with these telomerase drugs has been significant enough to have elicited a significant monetary investment in 2005 from Merck.[8] [edit] Telomerase ActivationIn addition to testing drug candidates that exploit cancer cell's dependence on telomerase, Geron is researching the possible applications of activating the enzyme in normal cells to delay cellular senescence. The company is in the early stages of developing a telomerase based treatment for HIV called TAT0002 from astragalus which is actually the saponin cycloastragenol in Astragalus[9]. Geron has granted a license to TAsciences.com to sell TA-65, the telomerase activator agent derived from the Chinese astragalus plant. [edit] Stem cell therapiesOn January 23, 2009, Geron received FDA approval to begin Phase I testing of GRNOPC1 in humans [10]. GRNOPC1 is an embryonic stem cell based drug that is designed to treat specific forms of spinal cord injury through remyelination of damaged axons. This trial does not involve direct use of stem cells however, as GRNOPC1 is composed of oligodendrocyte progenitor cells derived from embryonic stem cell lines. Animal tests have shown significant restoration of mobility in animals with spinal injuries that were treated with this drug [11]. Geron also has several other embryonic stem cell treatments that are still in the preclinical phase, including GRNCM1, a treatment for heart disease, and GRNIC1, a treatment for diabetes. In tests with diabetic mice, 80% of the mice given GRNIC1 were still alive in 50 days while the entire control group, which was given no treatment, perished[12]. [edit] PatentsSince it was organized in 1990 Geron has been granted over 260 patents[13]. [edit] Patent issueGeron Corporation initially held exclusive rights to three cell types derived from embryonic stem cells, as the result of paying for the research originally conducted by Dr. James Thomson at the University of Wisconsin–Madison.[14] The patents on the other three cell types are owned by the Wisconsin Alumni Research Foundation (WARF). WARF and Geron did not charge academics to study human stem cells but did charge commercial users. In 2001 WARF came under public pressure to widen access to human stem-cell technology, and they launched legal action against Geron Corporation to recover some of the previously sold rights. The two sides agreed that Geron would keep the rights to only three cell types.[15] In October 2006, a legal challenge was mounted to overturn these patents by The Foundation for Taxpayer and Consumer Rights and the non-profit patent-watchdog Public Patent Foundation.[16] They contended that two of the patents granted to WARF are invalid because they cover a technique published in 1992 for which a patent had already been granted to an Australian researcher. Another part of the challenge came from the molecular biologist Jeanne Loring who stated that University of Wisconsin–Madison stem cell pioneer James Thomson's techniques (currently patents held by WARF) are rendered obvious by a 1990 paper and two textbooks.[17] The outcome of this legal challenge was particularly relevant to the Geron Corporation as it can only license patents that are upheld.[18] The patents were ultimately upheld when the reexamination concluded in 2008.[19] As an interim measure, on January 23, 2007 WARF relaxed the stem cell patents, allowing industry-sponsored research at academic and non-profit institutions without a license.[20] WARF will allow easier and simpler cost free cell transfers among researchers and would not require a license or agreement from California's taxpayer-funded stem cell research program.[21] [edit] PoliticsAs a participant in the then-controversial stem cell and cloning area, Geron Corporation was asked to testify about its technology before the U.S. Congress. In 2001, when Congress was attempting to ban all forms of cloning, Geron CEO Thomas Okarma spoke before Congress to preserve cloning for therapeutic purposes. [22][23][24] [edit] Company informationGeron was founded by Dr. Michael D. West and is based in Menlo Park, California. The company was incorporated in 1990 and began doing business in 1992. Its current chief executive officer is Dr. Thomas B. Okarma, M.D., Ph.D. It was included in the SCCC Index, a 15 stock index of companies important "to the field of stem cell, cloning, and cell transplantation research and medicine" when that index was created in 2003 and as of July 2006 comprises 18.42% of the index[25]. [edit] References
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