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Ref Type Journal Article
PMID (12082455)
Authors Buller RE, Runnebaum IB, Karlan BY, Horowitz JA, Shahin M, Buekers T, Petrauskas S, Kreienberg R, Slamon D, Pegram M
Title A phase I/II trial of rAd/p53 (SCH 58500) gene replacement in recurrent ovarian cancer.
Journal Cancer gene therapy
Vol 9
Issue 7
Date 2002 Jul
URL
Abstract Text To determine the safety, gene transfer, host immune response, and pharmacokinetics of a replication-deficient adenovirus encoding human, recombinant, wild-type p53 (SCH 58500) delivered into the peritoneal cavity (i.p.) alone and sequentially in combination with platinum-based chemotherapy, of patients with recurrent ovarian, primary peritoneal, or fallopian tube cancer containing aberrant or mutant p53.SCH 58500 was administered i.p. to three groups of patients with heavily pretreated recurrent disease. Group 1 (n=17) received a single dose of SCH 58500 escalated from 7.5 x 10(10) to 7.5 x 10(12) particles. Group 2 (n=9) received two or three doses of SCH 58500 given alone for one cycle, and then with chemotherapy for two cycles. The SCH 58500 dose was further escalated to 2.5 x 10(13) particles/dose in group 2. A third group (n=15) received a 5-day regimen of SCH 58500 given at 7.5 x 10(13) particles/dose per day i.p. alone for cycle 1 and then with intravenous carboplatin/paclitaxel chemotherapy for cycles 2 and 3.No dose-limiting toxicity resulted from the delivery of 236/287 (82.2%) planned doses of SCH 58500. Fever, hypotension abdominal complaints, nausea, and vomiting were the most common adverse events. Vector-specific transgene expression in tumor was documented by RT-PCR in cells from both ascitic fluid and tissue biopsies. Despite marked increases in serum adenoviral antibody titers, transgene expression was measurable in 17 of 20 samples obtained after two or three cycles of SCH 58500. Vector was detectable in peritoneal fluid by 24 hours and persisted for as long as 7 days whereas none was detected in urine or stool. There was poor correlation between CT scans and CA125 responses. CA125 responses, defined as a greater than 50% decrement in serum CA125 from baseline, were documented in 8 of 16 women who completed three cycles of the multidose regimen.CT scans are not a valid measure of response to i.p. SCH 58500 due to extensive adenoviral-induced inflammatory changes. Intraperitoneal SCH 58500 is safe, well tolerated, and combined with platinum-based chemotherapy can be associated with a significant reduction of serum CA125 in heavily pretreated patients with recurrent ovarian, primary peritoneal, or fallopian tube cancer.

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Molecular Profile Treatment Approach
Gene Name Source Synonyms Protein Domains Gene Description Gene Role
Therapy Name Drugs Efficacy Evidence Clinical Trials
Drug Name Trade Name Synonyms Drug Classes Drug Description
SCH 58500 p53 Gene Therapy 4 SCH 58500 is a recombinant adenoviral vector encoding wild-type human TP53 that may introduces TP53 into tumor cells, leading to tumor cell apoptosis (PMID: 12082455).
Gene Variant Impact Protein Effect Variant Description Associated with drug Resistance
Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
Unknown unknown ovarian cancer not applicable SCH 58500 Phase Ib/II Actionable In a Phase I/II trial, SCH 58500 demonstrated safety and preliminary efficacy, resulted in measurable transgene expression in 85% (17/20) of biopsy samples, and more than 50% reduction of CEA level in 50% (8/16) of ovarian cancer patients who received three cycles of treatment (PMID: 12082455). 12082455