Patterns of ABL Mutation in Asian With Imatinib Resistant Chronic Myeloid Leukemia and Ph Positive Acute Lymphocytc Leuekmia Patients (AMICA)

Study Overview
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Brief Summary
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The purposes of this study are to investigate the patterns of BCR-ABL mutations in CML and Ph positive ALL patients with imatinib resistance during the year of 2001-2009 in Asian institutes.

Detailed Description
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Awareness of the significance of BCR-ABL mutations is generally low across Asia. This is partly due to historical limitations in capabilities for mutation testing. While numerous mutation studies have been done in non-Asian populations, there are very few published reports on mutations in Asians. CML management in Asia therefore continues to be largely intuitive. Anecdotal reports, suggest that there may differences in the presence or absence of mutations at the time of initial diagnosis and their occurrence during imatinib treatment. At present, however, we have no comprehensive formal knowledge of the actual nature of mutations in Asians. There are moves towards the establishment of CML registries that will capture the pattern of mutations among Asian patients. In recent years, several laboratories in the region have been performing mutation analysis. However, no systematic evaluation of or report on these data has been undertaken. This study therefore intends to collect documented mutation data in Asian CML and Ph positive ALL patients from identified Asian institutes. While this is a retrospective, cross-sectional analysis of mutation information, the study will provide the first comprehensive formal report on mutations in Asian CML and Ph positive ALL patients. The collecting information has the potential better to inform the clinical management of CML and Ph positive ALL in Asia according to the mutation result and possibly future research in these patients.

Official Title
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Patterns of ABL Mutation in Asian With Imatinib Resistant Chronic Myeloid Leukemia and Ph Positive Acute Lymphocytc Leuekmia Patients (AMICA): A Retrospective Feasibility Study

Conditions
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Chronic Myeloid Leukemia or Ph Positive ALL

Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: All mutation data from CML and Ph positive ALL patients who developed imatinib resistance during the year 2001-2009 Exclusion Criteria: Mutation data from CML and Ph positive ALL patients who, in addition to imatinib, received other therapy. Follow up mutation report after second generation TKI therapy.

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| imatinib resistance<br>All mutation data from CML and Ph positive ALL patients who developed imatinib resistance during the year 2001-2009 | |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Analyzing the patterns and rate of BCR-ABL mutations in Asian CML and Ph positive ALL patients | To describe the patterns and rate of BCR-ABL mutations in Asian CML and Ph positive ALL patients. To compare the patterns of BCR-ABL mutations to that of Non-Asian. To describe methods used in mutation analysis | 9 years | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Description of the choice of second-line therapy | To describe about the choice of second-line therapy To describe outcome after emergence of resistance according to type of mutation | 9 years | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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imatinib resistance, mutation