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FIP1L1-PDGFRalpha Transcript Detection
Also known as : [hypereosinophilic syndrome],[RT-PCR]

Test performed by: LabPLUS - Dept. Diagnostic Genetics - Molecular Haematology

Specimen Collection

NOTE: RNA is highly unstable and specimens degrade rapidly. For optimum results samples should be sent in CPD tubes at room temperature and be received by this lab within 24 hours of collection. Although LabPlus operates 24 hours a day, 7 days a week, the Molecular Haematology section only operates 9-5, Mon-Fri (excluding public holidays). Samples arriving on a Friday afternoon or a Saturday or Sunday may not get processed until the following Monday. Such delays can significantly compromise the quality of the sample. 

CPD9 mL CPD Blood (Preferred)
CPD2 mL CPD Bone Marrow (Preferred)
EDTA2 mL EDTA Bone Marrow
Turnaround Time: Within 2 weeks, 4 days
Diagnostic Use and Interpretation

This PCR tests for the presence of a FIP1L1-PDGFRalpha fusion transcript resulting from a deletion in chromosome 4q12 which joins together parts of the FIP1L1 and PDGFRalpha genes. In some cases of hypereosinophilic syndrome the chimeric FIP1L1-PDGFRalpha tyrosine kinase created by this fusion is constitutively activated. The FIP1L1-PDGFRalpha tyrosine kinase is a therapeutic target of Imatinib (Gleevec) .

Contact Information

To contact the Molecular Haematology team please call:

Auckland City Hospital   (09) 307 4949
Lablink   ext 22000
Prof. Peter Browett (Haematologist)     ext 9090-86281
Nikhil Ghallayan (Section Leader)   ext 22006
Molecular Haematology Lab   ext 22005

For more inforamtion about the Molecular Haematology service at LabPLUS:

Molecular Haematology information page

Test performed by: LabPLUS - Dept. Diagnostic Genetics - Cytogenetics

A FISH (fluorescent in situ hydridisation) based assay is also available for this test.

Refer to Molecular Cytogenetics Probe List

Information on the FIP1L1-PDGFRalpha Fusion Gene:

Last updated at 11:48:27 18/03/2021