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13-CIS RETINOIC ACID TREATMENT FOR MYELODYSPLASTIC SYNDROMES
13-CIS RETINOIC ACID TREATMENT FOR MYELODYSPLASTIC SYNDROMES JOURNAL OF CLINICAL ONCOLOGY Picozzi, V. J., SWANSON, G. F., Morgan, R., Hecht, F., Greenberg, P. L. 1986; 4 (4): 589-595Abstract
To test the biologic activity of 13-cis retinoic acid (13-CRA) in patients with myelodysplastic states (MDS), we administered 13-CRA orally (2.5 mg/kg/d initially, escalated to 4 mg/kg/d) for 8 weeks to 15 consecutive patients. Eight of 15 patients (53%) experienced an increase in peripheral granulocyte counts of greater than 20% (range, 22% to 700%). In five patients, the absolute increase in peripheral granulocyte count was greater than 500 cells/microL. Two of 15 patients experienced a decrease in the circulating granulocyte count of greater than or equal to 20%. Comparable values for peripheral platelet counts were 27% (4/15 patients) greater than 20% increase and 33% (5/15 patients) greater than 20% decrease. No patient experienced a major change in erythrocyte transfusion requirement while receiving 13-CRA in comparison with pretreatment status. Thirteen patients had morphologic and cytogenetic evaluation of marrow cells before 13-CRA treatment, and with one exception, marrow morphologic and cytogenetic abnormalities persisted following 13-CRA administration. The exception occurred in the patient with the most dramatic response, whose granulocyte count increased from 400 to 2,800 cells/microL along with a normalization of the leukocyte alkaline phosphatase score, a morphologic improvement in granulocyte maturation, and a disappearance of the initial chromosome abnormality. These changes did not persist after cessation of 13-CRA administration, but were reproduced following drug readministration. No patients experienced serious decrements in peripheral blood counts or leukemic transformation while receiving 13-CRA. All patients had mild to marked dermatologic toxicity (cheilosis, skin dryness). No other major toxicity was encountered. We conclude that 13-CRA may be safely administered and may increase peripheral granulocyte counts in a proportion of patients with MDS.
View details for Web of Science ID A1986A743500023
View details for PubMedID 3514807