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Clin Lab. 2015;61(1-2):183-6.

E255K and G250E mutation appearing in a patient with e19a2 chronic myeloid leukemia resistant to imatinib.

Abstract

BACKGROUND:

Chronic myeloid leukemia (CML) with the e19a2 transcript coding for p230 is a rare disease. ABL1 kinase domain mutations in CML with the e19a2 rearrangement were seldom reported.

METHODS:

The clinical characteristics of a 45-year-old Chinese female CML patient with e19a2 BCR/ABL1 transcript were described. The mutation on the ABL gene exons was determined by sequencing the cDNA of the μ-BCR-ABL fusion product.

RESULTS:

This patient developed an acquired resistance associated with two p-BCR/ABL1 mutations (E255K and G250E) during treatment with imatinib.

CONCLUSIONS:

Here, we report a CML patient with e19a2 transcripts, carrying E255K and G250E mutation and experience of nilotinib treatment. The μ-BCR/ABL1 mutation should be investigated after imatinib treatment failure.

PMID:
25807654
[Indexed for MEDLINE]
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