Biology and treatment of acute progranulocytic leukemia

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22 Scopus citations


Acute progranulocytic leukemia (APL) is one of the most curable of all human cancers. Combination treatment with retinoic acid (RA) and anthracycline-based chemotherapy is safe and effective for the vast majority of patients, and several novel treatment approaches are under investigation for high-risk or relapsed patients. The APL-specific oncogenes PML-RARα and PLZF-RARα both bind nuclear corepressors and recruit histone deacetylase activity to promoters of RA target genes. The differential sensitivity of binding of these oncogenes to nuclear corepressors in the presence of RA appears to explain the resistance of PLZF-RARα-related APL to RA and at the same time explains the effectiveness of RA in PML-RARα-positive APL. Transcriptional repression of RA target genes, mediated by histone deacetylase activity, may thus be a key pathogenetic event in APL Cure of the minority of resistant patients requires further refinement of current treatment approaches and appropriately timed incorporation of novel therapies, such as arsenic trioxide or histone deacetylase inhibitors.

Original languageEnglish (US)
Pages (from-to)236-240
Number of pages5
JournalCurrent opinion in hematology
Issue number4
StatePublished - Aug 20 1999

ASJC Scopus subject areas

  • Hematology


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