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Updated: Aug 10, 2026

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FISH for Pre-implantation Genetic Diagnosis
Published on: February 24, 2011
Identification of complex t(15;17) in APL by FISH
1Cancer Center of Southwest Biomedical Research Institute, Scottsdale, Arizona.
Cancer Genetics and Cytogenetics
|January 1, 1994
Summary
Fluorescence in situ hybridization (FISH) effectively identifies the RAR-alpha/PML fusion in acute promyelocytic leukemia (APL). This study details FISH
Area of Science:
- Hematology
- Molecular Biology
- Cytogenetics
Background:
- Acute promyelocytic leukemia (APL) is characterized by the t(15;17) translocation.
- The RAR-alpha/PML fusion gene is a hallmark of APL, crucial for diagnosis.
- Accurate detection of this fusion is vital for effective APL management.
Purpose of the Study:
- To evaluate the utility of Fluorescence in situ hybridization (FISH) for detecting the RAR-alpha/PML fusion.
- To identify the RAR-alpha/PML fusion in bone marrow cells of APL patients with complex t(15;17) translocations.
Main Methods:
- Utilized Fluorescence in situ hybridization (FISH) assay.
- Analyzed bone marrow (BM) cells from three APL patients.
- Focused on identifying the specific RAR-alpha/PML fusion event.
Main Results:
- FISH successfully identified the RAR-alpha/PML fusion event in all three APL patients.
- The assay demonstrated sensitivity and effectiveness in complex t(15;17) cases.
Conclusions:
- FISH is a reliable method for detecting the RAR-alpha/PML fusion in APL.
- This technique is valuable for diagnosing APL, even with complex chromosomal abnormalities.

