The development of cancer after p53 inactivation is determined by a series of genomic changes that occur in four steps. The loss of heterozygosity of TP53 (the gene encoding p53 in humans, named Trp53 in mice) is followed by an accumulation of deletions, genome doubling, and the emergence of gains and amplifications. In a study published in the August 17, 2022, issue of Nature, researchers have further observed that these four phases of genomic evolution are associated with specific histological stages before and after the malignant condition developed.
While Aprea Therapeutics Inc.’s data disclosed July 21 from the phase II trial with eprenetapopt – also known as APR-246, a reactivator of mutant tumor suppressor protein p53 – plus azacitidine (AZA) whetted interest in taking aim at the “guardian of the genome,” the company’s fortune took an unexpected turn when the FDA smacked a partial clinical hold on work with the duo.
HONG KONG – South Korean biotech Bioleaders Co. Ltd., headquartered in Yong-in city, Gyeonggi-do, and Israel's Weizmann Institute of Science, based in Rehovot, recently founded a joint venture in Israel. With the new entity, they will accelerate the R&D of a Weizmann-developed approach targeting p53, a strong tumor suppressor that has proved difficult to drug.
