Efficacy and Safety of Nilotinib in CML-CP (ENESTKorea)

Seoul National University

Status and phase

Completed

Phase 4

Conditions

Chronic Myeloid Leukemia, Chronic Phase

Treatments

Drug: Nilotinib

Study type

Interventional

Funder types

Other

Industry

Identifiers

NCT03332511

1110-124-383

Details and patient eligibility

About

ENESTKorea is a phase 4, multi-institutional, single-arm, open-label study investigating the efficacy and safety of nilotinib at the currently approved dose (300 mg twice daily) and its exposure-outcome relationship, in adult patients diagnosed as Philadelphia chromosome-positive chronic myeloid leukemia in chronic phase.

Full description

Nilotinib is a second-generation tyrosine kinase inhibitor with improved efficacy compared to imatinib. However, there are still many patients for whom the therapeutic response is inadequate, or toxicity is limiting the treatment. Serum concentration of nilotinib was shown to affect time to response and progression in previous studies. Therefore, the investigators hypothesized that the optimal plasma level of nilotinib that is sufficient to achieve adequate clinical response while not generating major adverse events could be elucidated by the analysis of combined clinical and pharmacokinetic data.

ENESTKorea is a phase 4, multi-institutional, single-arm, open-label study investigating the efficacy and safety of nilotinib at the currently approved dose (300 mg twice daily), in adult patients diagnosed as Philadelphia chromosome (Ph)-positive chronic myeloid leukemia in chronic phase (CML-CP). Plasma samples are collected every three months, for up to 12 months, to determine plasma nilotinib concentrations (PNCs). The primary endpoint is the cumulative rate of molecular response 4.5 (MR4.5; BCR-ABL1IS ≤ 0.0032%) by 24 months. Secondary endpoints include the cumulative rates of MR3 (BCR-ABLIS ≤ 0.1%) and MR4 (BCR-ABLIS ≤ 0.01%) by 12 and 24 months; time to MR3, MR4, and MR4.5; progression-free survival (PFS); overall survival (OS). Correlations between PNCs and clinical outcomes are also analyzed.

Enrollment

110 patients

Sex

All

Ages

19+ years old

Volunteers

No Healthy Volunteers

Inclusion criteria

Aged 19 or older
Philadelphia chromosome-positive chronic myeloid leukemia in chronic phase

Exclusion criteria

CML with atypical BCR-ABL1 transcripts (transcripts other than e13a2 or e14a2)
Eastern Cooperative Oncology Group performance status ≥ 3
Cardiac abnormality including a corrected QT interval ≥ 480 milliseconds, complete left bundle branch block, permanent pacemaker implantation, congenital long QT syndrome, history of tachyarrhythmia requiring treatment, clinically significant resting bradycardia, history of acute coronary syndrome within 12 months, and decompensated congestive heart failure
Organ dysfunction defined by total serum bilirubin levels ≥ 1.5 × the upper limit of the normal range (ULN), creatinine ≥ 1.5 × ULN, aspartate or alanine aminotransferase ≥ 2.5 × ULN, amylase or lipase ≥ 1.5 × ULN and alkaline phosphatase ≥ 2.5 × ULN not directly related to the CML
Uncontrolled hypertension and/or diabetes
Active and uncontrolled infection
Major surgery within two weeks or incomplete recovery from the previous surgery
Congenital or acquired bleeding tendency
Impaired gastrointestinal absorption
History of small bowel resection or bypass surgery
History of acute pancreatitis within 12 months or chronic pancreatitis
Concomitant administration of strong irreplaceable CYP3A4 inhibitors or inducers, QT-prolonging agents, or coumarin derivatives
Any other uncontrolled medical conditions that would present substantial safety risks or compromise compliance with the study treatment