Which medications in the drug class Cytotoxic agents are used in the treatment of Mixed Connective-Tissue Disease?

Updated: Oct 01, 2018
  • Author: Eric L Greidinger, MD; Chief Editor: Herbert S Diamond, MD  more...
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Cytotoxic agents

Major organ involvement may require moderate-to-high divided daily doses of corticosteroids and cytotoxic agents (eg, PO or pulse IV cyclophosphamide). Recent reports suggest that, in contrast to primary or scleroderma-associated pulmonary hypertension, a subset of MCTD patients with pulmonary hypertension may respond well to aggressive immunosuppression with cytotoxic agents.

Cyclophosphamide (Cytoxan)

Chemically related to nitrogen mustards. As an alkylating agent, the mechanism of action of the active metabolites may involve cross-linking of DNA, which may interfere with growth of normal and neoplastic cells.

Administered as monthly IV infusion or, less commonly, as daily PO medication for severe MCTD.

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