KISS Study: Kinase Inhibition With Sprycel Start up (KISS)
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|ClinicalTrials.gov Identifier: NCT03193281|
Recruitment Status : Active, not recruiting
First Posted : June 20, 2017
Last Update Posted : November 7, 2022
Chronic myeloid leukaemia (CML) is due to a chromosomal abnormality in white blood cells which results in abnormal multiplication. CML in its earlier, slower growing chronic phase (CP) is well controlled by the tyrosine kinase inhibitor (TKI) drug imatinib, which targets the consequences of the chromosomal abnormality, inducing a response and subsequent remission (as measured using molecular techniques on patient blood or bone marrow samples in the lab). Dasatinib, a newer TKI drug, similar in design to imatinib, gives a more rapid molecular response, however the long term side-effects are less known than imatinib.
This study will investigate the efficacy and safety of a treatment plan for patients with newly diagnosed CML-CP, where dasatinib will be used to more rapidly induce a molecular response (MR3.0) within 12 months, after which imatinib will be used to maintain the CML in that remission. It is hypothesised that imatinib is safe and effective in maintaining MR3.0 in patients with CML who achieve MR3.0 at 12 months following initial induction therapy with dasatinib.
|Condition or disease||Intervention/treatment||Phase|
|Chronic Myeloid Leukemia||Drug: Dasatinib Drug: Imatinib||Phase 2|
The KISS Study is a Phase II, multicentre, open-label, prospective non-randomised study of treatment modification in response to maintenance of MR3.0 at 12 months. Patients must be newly diagnosed with chronic phase CML (CML-CP) (<3 months) and previously untreated with the exception of hydroxyurea.
Patients will be recruited from hospital haematology clinics. The majority of patients will have been referred to a haematologist due to suspected CML. Written informed consent will be ensured before any study-specific procedures are undertaken or study data collected, however the majority of assessments carried out for this study are based on standard of care.
Patients' eligibility will be determined by the usual procedures carried out for CML diagnosis. Results from both diagnostic procedures and confirmatory screening procedures will constitute baseline data. Once a patient has had their eligibility confirmed and has signed informed consent, they will be enrolled into the trial.
The trial consists of two stages:
Stage 1: The first 12 months after recruitment (before the possible switch to imatinib).
Stage 2: Months 13 - 37.
The following measurements/data will be recorded throughout the trial at protocol specified time points:
- Haematology and biochemistry.
- PB Q-PCR for BCR-ABL1.
- Chest x-ray, ECG, ECHO.
- Medical assessment including physical exam, ECOG performance, weight, vital signs, assessment of extra medullary disease (liver, lymph nodes and spleen), spleen measurement below left costal margin, adverse events and concomitant medications.
- Haematological and molecular response assessments.
- Treatment adherence assessment.
- Patient questionnaire (MDASI-CML).
All patients will commence dasatinib (Sprycel®) 100 mg daily. Molecular monitoring of blood BCR-ABL1 transcripts to measure molecular response will occur 3 monthly by Q-PCR as per standard of care procedures. Patients who achieve a BCR-ABL1 level of ≤ 0.1% (MR3.0) by 12 months on treatment will switch treatment to imatinib 400 mg daily if MR3.0 is confirmed at 13 months (and they give their consent to switch). Those patients who do not achieve MR3.0 at 12 months or MR3.0 is not confirmed at 13 months, will remain on dasatinib. Patients with confirmed MR3.0 who choose not to switch to imatinib will continue on dasatinib. Patients that are intolerant of dasatinib in the first 12 months, those that switch to imatinib at 12 months and then lose MR3.0 or those intolerant of imatinib will be treated off study.
|Study Type :||Interventional (Clinical Trial)|
|Actual Enrollment :||91 participants|
|Intervention Model:||Single Group Assignment|
|Intervention Model Description:||
A Phase II, multicentre, open-label, prospective non-randomised study of treatment modification in response to maintenance of MR3.0 at 12 months.
Molecular response will be measured 3 monthly. Patients who achieve MR3.0 by 12 months, with a confirmed response at 13 months on treatment, will switch treatment to imatinib. Those patients who do not achieve this confirmed response will remain on dasatinib.
For patients who achieve confirmed MR3.0 by 13 months we define two study stages. Stage 1 is the first 12 months after recruitment (i.e. before the possible switch to imatinib) and Stage 2 includes the months 13 - 37.
|Masking:||None (Open Label)|
|Official Title:||KISS Study: A Phase II Study of Dasatinib Followed by Imatinib in Newly Diagnosed, Previously Untreated Patients With Chronic Phase CML|
|Actual Study Start Date :||July 17, 2017|
|Estimated Primary Completion Date :||December 31, 2025|
|Estimated Study Completion Date :||December 31, 2025|
All patients will begin the study on dasatinib treatment (Sprycel® 100mg once daily oral administration). Those who reach MR3.0 at 12 months (end of Study Stage 1) and achieve a confirmed result at 13 months, will switch to imatinib treatment (Imatinib-AFT 400mg once daily oral administration) for the next 24 months (Study Stage 2).
Patients who do not achieve a confirmed MR3.0 result at 13 months will not be eligible to switch to imatinib treatment and will remain on dasatinib treatment, as per Study Stage 1.
Patients will be assessed on a 3-monthly basis throughout the study. Those who discontinue dasatinib treatment during the study for reasons other than the planned treatment switch to imatinib at 13 months, will also be followed up every 3 months.
In order to test the study hypothesis patients need to stay on dasatinib (Sprycel) treatment for the first 12 months of the study (Stage 1).
Patients who do not reach MR3.0 at 12 months will remain on dasatinib treatment.
Other Name: Sprycel
Patients who reach MR3.0 at 12 months (and the result is confirmed at 13 months) will switch to imatinib (Imatinib-AFT) treatment.
Other Name: Imatinib-AFT
- To estimate the proportion of patients who remain in MR3.0 for the duration of 2 years following a change of therapy from dasatinib to imatinib at 13 months. [ Time Frame: 2 years ]
- To estimate progression free survival (PFS), failure free survival (FFS) and overall survival (OS) for patients that switch to imatinib at 13 months. [ Time Frame: 3 years ]
- To estimate the proportion of patients who regain MR3.0 on dasatinib or another TKI therapy after having a confirmed loss of MR3.0 on imatinib, for patients that switch to imatinib at 13 months. [ Time Frame: 3 years ]
- To estimate time to MR3.0, MR4.5 and MR5.0 for patients that switch to imatinib at 13 months. [ Time Frame: 3 years ]
- To describe adverse event profiles on Stage 1 and Stage 2 of the study and overall for patients that switch to imatinib at 13 months. [ Time Frame: 3 years ]
- To describe the quality of life on Stage 1 and Stage 2 of the study and overall for those that switch to imatinib at 13 months. [ Time Frame: 3 years ]
- To estimate PFS, FFS and OS for the following groups: 1) the entire cohort 2) patients not eligible to switch to imatinib at 13 months 3) patients that are eligible but do not switch. [ Time Frame: 3 years ]
- To estimate time to MR3.0, MR4.5 and MR5.0 for the following groups: 1) the entire cohort 2) patients not eligible to switch to imatinib at 13 months 3) patients that are eligible but do not switch. [ Time Frame: 3 years ]
- To describe adverse event profiles on each stage of study therapy for the following groups: 1) the entire cohort 2) patients not eligible to switch to imatinib at 13 months 3) patients that are eligible but do not switch. [ Time Frame: 3 years ]
- To describe the quality of life on each stage of study therapy for the following groups: 1) the entire cohort 2) patients not eligible to switch to imatinib at 13 months 3) patients that are eligible but do not switch. [ Time Frame: 3 years ]
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03193281
|Auckland City Hospital|
|Auckland, New Zealand|
|Auckland, New Zealand|
|Christchurch, New Zealand|
|Dunedin, New Zealand|
|Hamilton, New Zealand, 3204|
|Taranaki Base Hospital|
|New Plymouth, New Zealand, 4310|
|Palmerston North Hospital|
|Palmerston North, New Zealand|
|North Shore Hospital|
|Takapuna, New Zealand, 0622|
|Wellington, New Zealand|
|Principal Investigator:||Peter Browett, MBChB||University of Auckland, New Zealand|