Screening of IDH1 and IDH2 Gene Mutations in Adult Acute Myeloid Leukemia for Possible Targeted Therapy

• Conditions: Acute Myeloid Leukemia

• Registration Number: NCT03499912
• Lead Sponsor: National Taiwan University Hospital

Brief Summary

1. To assess the incidence of IDH1 and IDH2 mutations in adult AML patients, and to explore their associations with the patients' clinical, cytogenetic, and molecular characteristics as well as with treatment response and outcome.

2. To delineate the similarities and distinctions among mutations at IDH1-R132, IDH2-R140 and IDH2-R172 in AML, both clinically and molecularly (including cytogenetics, immunophenotyping, mutation co-occurrence patterns).

3. The results can be references for future selection of targeted therapy (targeting IDH mutant proteins).

Detailed Description

Isocitrate dehydrogenases (IDH) are enzymes that catalyze oxidative decarboxylation of isocitrate into alpha-ketoglutarate (α-KG). IDH1 and IDH2 mutations in AML give the enzymes neomorphic enzymatic activity to transform α-KG to D-2HG, an oncometabolite which acts as a competitive inhibitor of dioxygenases, and causes dysregulation of TET2 and histone demethylases, consequently leading to epigenetic reprogramming of a cell, blocking differentiation and contributing to a transformed phenotype, and leukemogenesis. Investigators plan to recruit 300 adult AML patients (newly diagnosed or relapsed). 10mL of peripheral blood or marrow blood will be obtained from routine practice blood/marrow sampling specimens (no extra venipuncture or bone marrow aspiration would be required) and sent for routine tests such as cytogenetics, immunophenotyping, and gene mutation analyses. IDH1 R132, IDH2 R140, and IDH2 R172 mutations will be screened by PCR followed by Sanger sequencing, as previously described.

Investigators will first assess the incidence of IDH1 and IDH2 mutations in adult AML patients, and then explore their associations with the patients' clinical course, cytogenetic, and molecular characteristics as well as with treatment response and outcome. Investigators also seek to delineate the similarities and distinctions among IDH mutation variants at IDH1-R132, IDH2-R140 and IDH2-R172, both clinically and molecularly (including cytogenetics, immunophenotyping, mutation co-occurrence patterns).

Study Timeline

• Study Start: 2017-03-29
• Status Verified: 2018-03
• Study First Submitted: 2018-03-22
• Study First Submitted QC: 2018-04-13
• Study First Posted: 2018-04-17
• Last Update Submitted: 2018-04-18
• Last Update Posted: 2018-04-20
• Primary Completion: 2019-04-01
• Study Completion: 2019-07-01

Recruitment & Eligibility

• Status: UNKNOWN
• Sex: All
• Target Recruitment: 300

Inclusion Criteria

Not provided

Exclusion Criteria

Not provided

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Incidence of IDH1 and IDH2 mutation	2017/03/07 - 2019/03/01	Peripheral blood or marrow blood will be obtained from routine practice blood/marrow sampling specimens (no extra venipuncture or bone marrow aspiration would be required) and sent for routine tests such as cytogenetics, immunophenotyping, and gene mutation analyses.

Trial Locations

Locations (1)

National Taiwan University Hospital; 🇨🇳 Taipei, Taiwan