Oral cedazuridine/decitabine for MDS and CMML: a phase 2 pharmacokinetic/pharmacodynamic randomized crossover study. Blood 2020 Aug 06;136(6):674-683
Date
04/15/2020Pubmed ID
32285126Pubmed Central ID
PMC7414597DOI
10.1182/blood.2019004143Scopus ID
2-s2.0-85089170147 (requires institutional sign-in at Scopus site) 183 CitationsAbstract
This phase 2 study was designed to compare systemic decitabine exposure, demethylation activity, and safety in the first 2 cycles with cedazuridine 100 mg/decitabine 35 mg vs standard decitabine 20 mg/m2 IV. Adults with International Prognostic Scoring System intermediate-1/2- or high-risk myelodysplastic syndromes (MDS) or chronic myelomonocytic leukemia (CMML) were randomized 1:1 to receive oral cedazuridine/decitabine or IV decitabine in cycle 1, followed by crossover to the other treatment in cycle 2. All patients received oral cedazuridine/decitabine in subsequent cycles. Cedazuridine and decitabine were given initially as separate capsules in a dose-confirmation stage and then as a single fixed-dose combination (FDC) tablet. Primary end points: mean decitabine systemic exposure (geometric least-squares mean [LSM]) of oral/IV 5-day area under curve from time 0 to last measurable concentration (AUClast), percentage long interspersed nuclear element 1 (LINE-1) DNA demethylation for oral cedazuridine/decitabine vs IV decitabine, and clinical response. Eighty patients were randomized and treated. Oral/IV ratios of geometric LSM 5-day AUClast (80% confidence interval) were 93.5% (82.1-106.5) and 97.6% (80.5-118.3) for the dose-confirmation and FDC stages, respectively. Differences in mean %LINE-1 demethylation between oral and IV were ≤1%. Clinical responses were observed in 48 patients (60%), including 17 (21%) with complete response. The most common grade ≥3 adverse events regardless of causality were neutropenia (46%), thrombocytopenia (38%), and febrile neutropenia (29%). Oral cedazuridine/decitabine (100/35 mg) produced similar systemic decitabine exposure, DNA demethylation, and safety vs decitabine 20 mg/m2 IV in the first 2 cycles, with similar efficacy. This study is registered at www.clinicaltrials.gov as #NCT02103478.
Author List
Garcia-Manero G, Griffiths EA, Steensma DP, Roboz GJ, Wells R, McCloskey J, Odenike O, DeZern AE, Yee K, Busque L, O'Connell C, Michaelis LC, Brandwein J, Kantarjian H, Oganesian A, Azab M, Savona MRAuthor
Laura Michaelis MD Chief, Professor in the Medicine department at Medical College of WisconsinMESH terms used to index this publication - Major topics in bold
AdultAged
Aged, 80 and over
Antineoplastic Combined Chemotherapy Protocols
Area Under Curve
Capsules
Cross-Over Studies
DNA Methylation
DNA-Cytosine Methylases
Disease Progression
Drug Combinations
Drug Monitoring
Female
Gastrointestinal Diseases
Hematologic Diseases
Humans
Kaplan-Meier Estimate
Least-Squares Analysis
Leukemia, Myeloid, Acute
Leukemia, Myelomonocytic, Chronic
Long Interspersed Nucleotide Elements
Male
Middle Aged
Myelodysplastic Syndromes
Neoplasm Proteins
Tablets
Uridine
