Chronic myeloid leukemia in myasthenia gravis after long-term treatment with 6-mercaptopurine. 1981

J Wanders, and A R Wattendorff, and L J Endtz, and J J den Nijs, and C H Leeksma

A woman with myasthenia gravis and a thymoma did not respond sufficiently to thymectomy. She was treated with 6-mercaptopurine. Withdrawal of this treatment was several times followed by an aggravation of myasthenic symptoms. After more than 12 1/2 years treatment she developed Ph1-positive chronic myeloid leukemia (CML). No other case of CML following immunosuppressive treatment has been described. Because the therapeutic agent is potentially leukemogenic, the possibility cannot be definitely excluded that the development of CML is not a mere coincidence.

UI MeSH Term Description Entries
D007166 Immunosuppressive Agents Agents that suppress immune function by one of several mechanisms of action. Classical cytotoxic immunosuppressants act by inhibiting DNA synthesis. Others may act through activation of T-CELLS or by inhibiting the activation of HELPER CELLS. While immunosuppression has been brought about in the past primarily to prevent rejection of transplanted organs, new applications involving mediation of the effects of INTERLEUKINS and other CYTOKINES are emerging. Immunosuppressant,Immunosuppressive Agent,Immunosuppressants,Agent, Immunosuppressive,Agents, Immunosuppressive
D007951 Leukemia, Myeloid Form of leukemia characterized by an uncontrolled proliferation of the myeloid lineage and their precursors (MYELOID PROGENITOR CELLS) in the bone marrow and other sites. Granulocytic Leukemia,Leukemia, Granulocytic,Leukemia, Myelocytic,Leukemia, Myelogenous,Myelocytic Leukemia,Myelogenous Leukemia,Myeloid Leukemia,Leukemia, Monocytic, Chronic,Monocytic Leukemia, Chronic,Chronic Monocytic Leukemia,Chronic Monocytic Leukemias,Granulocytic Leukemias,Leukemia, Chronic Monocytic,Leukemias, Chronic Monocytic,Leukemias, Granulocytic,Leukemias, Myelocytic,Leukemias, Myelogenous,Leukemias, Myeloid,Monocytic Leukemias, Chronic,Myelocytic Leukemias,Myelogenous Leukemias,Myeloid Leukemias
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D009157 Myasthenia Gravis A disorder of neuromuscular transmission characterized by fatigable weakness of cranial and skeletal muscles with elevated titers of ACETYLCHOLINE RECEPTORS or muscle-specific receptor tyrosine kinase (MuSK) autoantibodies. Clinical manifestations may include ocular muscle weakness (fluctuating, asymmetric, external ophthalmoplegia; diplopia; ptosis; and weakness of eye closure) and extraocular fatigable weakness of facial, bulbar, respiratory, and proximal limb muscles. The disease may remain limited to the ocular muscles (ocular myasthenia). THYMOMA is commonly associated with this condition. Anti-MuSK Myasthenia Gravis,MuSK MG,MuSK Myasthenia Gravis,Muscle-Specific Receptor Tyrosine Kinase Myasthenia Gravis,Muscle-Specific Tyrosine Kinase Antibody Positive Myasthenia Gravis,Myasthenia Gravis, Generalized,Myasthenia Gravis, Ocular,Anti MuSK Myasthenia Gravis,Generalized Myasthenia Gravis,Muscle Specific Receptor Tyrosine Kinase Myasthenia Gravis,Muscle Specific Tyrosine Kinase Antibody Positive Myasthenia Gravis,Myasthenia Gravis, Anti-MuSK,Myasthenia Gravis, MuSK,Ocular Myasthenia Gravis
D002904 Chromosomes, Human, 21-22 and Y The short, acrocentric human chromosomes, called group G in the human chromosome classification. This group consists of chromosome pairs 21 and 22 and the Y chromosome. Chromosomes G,Group G Chromosomes,Chromosomes, Human, 21 22,Chromosomes, Human, 21-22,Chromosome, Group G,Chromosomes, Group G,Group G Chromosome
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D013934 Thymectomy Surgical removal of the thymus gland. (Dorland, 28th ed) Thymectomies
D015122 Mercaptopurine An antimetabolite antineoplastic agent with immunosuppressant properties. It interferes with nucleic acid synthesis by inhibiting purine metabolism and is used, usually in combination with other drugs, in the treatment of or in remission maintenance programs for leukemia. 6-Mercaptopurine,1,7-Dihydro-6H-purine-6-thione,6-Mercaptopurine Monohydrate,6-Thiohypoxanthine,6-Thiopurine,6H-Purine-6-thione, 1,7-dihydro-,BW 57-323H,Leupurin,Mecaptopurine Anhydrous,Mercaptopurina Wellcome,Puri-Nethol,Purimethol,Purinethol,6 Mercaptopurine,6 Mercaptopurine Monohydrate,6 Thiohypoxanthine,6 Thiopurine,BW 57 323H,BW 57323H

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