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Long-term effectiveness of danazol corticosteroids and cytotoxic drugs in the treatment of hematologic manifestations of systemic lupus erythematosus

Clinical Epidemiology Research Unit, Hospital de Especialidades Centro Médico Nacional ‘La Raza’, Instituto Mexicano del Seguro Social, Seris y Zaachila SN, Col. La Raza, México, D.F. 02990, México, Rheumatic Disease Unit, Hospital de Especialidades Centro Médico Nacional ‘La Raza’. Instituto Mexicano del Seguro Social, Seris y Zaachila SN, Col. La Raza, México, D.F. 02990, México, aavina100{at}hotmail.com

G Galindo-Rodri‘guez

Rheumatic Disease Unit, Hospital de Especialidades Centro Médico Nacional ‘La Raza’. Instituto Mexicano del Seguro Social, Seris y Zaachila SN, Col. La Raza, México, D.F. 02990, México

I Robledo

Clinical Epidemiology Research Unit, Hospital de Especialidades Centro Médico Nacional ‘La Raza’, Instituto Mexicano del Seguro Social, Seris y Zaachila SN, Col. La Raza, México, D.F. 02990, México

J Vela-Ojeda

Hematology Department, Hospital de Especialidades Centro Me‘dico Nacional ‘La Raza’, Instituto Mexicano del Seguro Social, Seris y Zaachila SN, Col. La Raza, México, D.F. 02990, México

M Vadillo-Buenfil

Clinical Epidemiology Research Unit, Hospital de Especialidades Centro Médico Nacional ‘La Raza’, Instituto Mexicano del Seguro Social, Seris y Zaachila SN, Col. La Raza, México, D.F. 02990, México

A Rosas-Cabral

Clinical Epidemiology Research Unit, Hospital de Especialidades Centro Médico Nacional ‘La Raza’, Instituto Mexicano del Seguro Social, Seris y Zaachila SN, Col. La Raza, México, D.F. 02990, México, Hematology Department, Hospital de Especialidades Centro Me‘dico Nacional ‘La Raza’, Instituto Mexicano del Seguro Social, Seris y Zaachila SN, Col. La Raza, México, D.F. 02990, México

D Salazar-Exaire

Clinical Epidemiology Research Unit, Hospital de Especialidades Centro Médico Nacional ‘La Raza’, Instituto Mexicano del Seguro Social, Seris y Zaachila SN, Col. La Raza, México, D.F. 02990, México

The purpose of this study was to compare the long-termeffectivenessamong danazol, corticosteroids, cytotoxics, and dapsone in the treatment of hematological manifestations of systemic lupus erythematosus (SLE). Medical charts of all patients seen at the Rheumatic Disease Unit from January to December of 1998 were reviewed. Patient characteristics, disease and treatment information were collected. The main outcome measures were the cause of and time to discontinuation of drugs used to treat hematological manifestations of SLE resulting from all causes, mainly toxicity and inefficacy or both. Bivariate analysis including one-way ANOVA and ² tests were used to comparedifferencesbetween means and proportions, respectively.Survivalcurvesamong the different drugs were evaluated using the Kaplan - Meier method. Multivariate analysis (Cox-regression) was used to adjust for potential confounders. After all medical records were reviewed 41 cases were eligible. Two cases had hemolytic anemia, 34 had thrombocytopenia, and five had both. These cases had received a total of 121 cycles of treatment at different times and they represent the study population (corticosteroids n = 37, danazol n = 51, citotoxic drugs n = 29, and dapsone n = 4). Crude rates of discontinuations due to any cause, toxicity and inefficacy were not statistically significant among the drugs. However, the Kaplan - Meier curves showed statistically significant difference for discontinuations due to all causes as well as inefficacy. Prednisone and cytotoxic drugs had the lowest probability of continuation. In contrast, there were not statistically significant differencesamong the drugs with respect to first relapse. This is the first study examining the long-term termination rates of several drugs used to treat hematological manifestations of SLE. Using rates of discontinuationadjustedfor time there were statisticallysignificant differencesamong the drugs. Danazol had the highest probability of continuation.

Key Words: thrombocytopenia • hemolitic anemia • danazol • lupus • treatment

Lupus, Vol. 12, No. 1, 52-57 (2003)
DOI: 10.1191/0961203303lu337oa


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