At a glance
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Phase I Study of Veliparib (ABT-888), an Oral PARP Inhibitor, and VX-970, an ATR Inhibitor in Combination With Cisplatin in Patients With Refractory Solid Tumors
In Brief
A Phase 1 clinical trial evaluating Veliparib + VX-970 + Cisplatin for Neoplasms. Completed, enrolled 53 participants across 3 sites.
Detailed Summary
Background: The drug cisplatin treats certain cancers when given with other chemotherapy drugs. Researchers think combining cisplatin with 2 other drugs could block proteins that support cancer cell growth. The other drugs are ABT-888 (veliparib) and M6620 (VX-970). They want to test if this drug combination slows the growth of cancer and is safe. Objectives: To test the safety and tolerability of VX-970 and veliparib combined with cisplatin in people with advanced refractory solid tumors. To determine the maximum tolerated dose of these drugs. Eligibility: People ages 18 and older with: * Solid tumors that have progressed after treatment or for which no treatment exists * Normal organ and marrow function Design: Participants will be screened with: * Medical history * Physical exam * Computed tomography (CT) scan or magnetic resonance imaging (MRI) * Blood and urine tests Participants will get the study drugs in 3-week cycles: * Cisplatin in a vein on 1 or 2 days * VX-970 in a vein on 2 days * Veliparib by mouth twice a day on 6 days In each cycle, participants will have 5 physical exams and blood tests 5 times. In some cycles, participants will have CT scans or MRIs. In cycle 1, participants may have 2 tumor biopsies. A small piece of tissue is removed by needle. Participants will keep a study diary. They will write when they take the drugs and if they have side effects. Participants will stay in the study as long as they tolerate the drugs and their tumors are not getting worse. Participants will have a phone call about a month after their last dose.
Study Details
Timeline
Interventions
Ataxia-telangiectasia-related (ATR) protein kinase is central to the deoxyribonucleic acid (DNA) damage response and homologous recombination, activating a series of phosphorylation cascades, culminating in cell cycle arrest to allow time for DNA repair. Poly (ADP-ribose) polymerase (PARP) plays a pivotal role in base-excision repair of single strand breaks formed either due to direct genotoxic stress or during the processing of double strand breaks. Preclinical studies show ATR inhibitor M6620 (VX-970) synergizes with cisplatin to induce DNA damage and antitumor activity. The addition of PARP inhibitor veliparib with VX-970 allows for impairment of DNA repair, induction of a breast cancer gene (BRCA) null phenotype, and potentiation of the antitumor activity of cisplatin.