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Ref Type | Journal Article | ||||||||||||
PMID | (31303643) | ||||||||||||
Authors | Veitch ZW, Cescon DW, Denny T, Yonemoto LM, Fletcher G, Brokx R, Sampson P, Li SW, Pugh TJ, Bruce J, Bray MR, Slamon DJ, Mak TW, Wainberg ZA, Bedard PL | ||||||||||||
Title | Safety and tolerability of CFI-400945, a first-in-class, selective PLK4 inhibitor in advanced solid tumours: a phase 1 dose-escalation trial. | ||||||||||||
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Abstract Text | CFI-400945 is a first-in-class oral inhibitor of polo-like kinase 4 (PLK4) that regulates centriole duplication. Primary objectives of this first-in-human phase 1 trial were to establish the safety and tolerability of CFI-400945 in patients with advanced solid tumours. Secondary objectives included pharmacokinetics, pharmacodynamics, efficacy, and recommended phase 2 dose (RP2D).Continuous daily oral dosing of CFI-400945 was evaluated using a 3+3 design guided by incidence of dose-limiting toxicities (DLTs) in the first 28-day cycle. Safety was assessed by CTCAE v4.0. ORR and CBR were evaluated using RECIST v1.1.Forty-three patients were treated in dose escalation from 3 to 96 mg/day, and 9 were treated in 64 mg dose expansion. After DLT occurred at 96 and 72 mg, 64 mg was established as the RP2D. Neutropenia was a common high-grade (19%) treatment-related adverse event at ≥ 64 mg. Half-life of CFI-400945 was 9 h, with Cmax achieved 2-4 h following dosing. One PR (45 cycles, ongoing) and two SD ≥ 6 months were observed (ORR = 2%; CBR = 6%).CFI-400945 is well tolerated at 64 mg with dose-dependent neutropenia. Favourable pharmacokinetic profiles were achieved with daily dosing. Response rates were low without biomarker pre-selection. Disease-specific and combination studies are ongoing.Clinical Trials Registration Number - NCT01954316 (Oct 1st, 2013). |
Molecular Profile | Treatment Approach |
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Gene Name | Source | Synonyms | Protein Domains | Gene Description | Gene Role |
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Therapy Name | Drugs | Efficacy Evidence | Clinical Trials |
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CFI-400945 | CFI-400945 | 0 | 4 |
Drug Name | Trade Name | Synonyms | Drug Classes | Drug Description |
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CFI-400945 | CFI-400945 is a selective Polo-like kinase 4 (PLK4) inhibitor that inhibits cell division and induces apoptosis in tumor cells (PMID: 25043604, PMID: 31303643). |
Gene | Variant | Impact | Protein Effect | Variant Description | Associated with drug Resistance |
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Molecular Profile | Indication/Tumor Type | Response Type | Therapy Name | Approval Status | Evidence Type | Efficacy Evidence | References |
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