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Pneumocystis jiroveci pneumonitis complicating ruxolitinib therapy

Samantha C Lee1, John Feenstra2, Paul R Georghiou3

  • 1School of Medicine, University of Queensland, St Lucia, Queensland, Australia.

BMJ Case Reports
|June 4, 2014
PubMed

Insights

Ruxolitinib, a JAK inhibitor for myelofibrosis, is linked to opportunistic infections. This case highlights Pneumocystis pneumonia, suggesting prophylaxis may be needed.

Area of Science:

  • Oncology
  • Immunology
  • Pharmacology

Background:

  • Ruxolitinib is a Janus kinase (JAK) inhibitor approved for myelofibrosis treatment.
  • Opportunistic infections are an emerging concern in patients receiving ruxolitinib.

Observation:

  • A case of Pneumocystis jiroveci pneumonia (PJP) occurred during ruxolitinib therapy.
  • This highlights a potential severe adverse event associated with JAK inhibition.

Findings:

  • Pneumocystis jiroveci pneumonitis is a serious infection that can complicate ruxolitinib treatment.
  • The JAK-STAT pathway plays a role in immune response, and its inhibition may increase infection risk.

Implications:

  • Clinicians should be vigilant for PJP in patients on ruxolitinib.
  • Consideration of Pneumocystis prophylaxis is recommended for patients undergoing ruxolitinib therapy.

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