ArticleBMC infectious diseases2025
Disseminated Mycobacterium kansasii disease complicating Talaromyces marneffei infection in patient with anti-IFN-γ autoantibodies: a case report.
Article in BMC infectious diseases, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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Who cites it
1 citing paper in PubMed.
- DisseminatedFrontiers in immunology · 2026Review
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6 authors.
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No grant is acknowledged in the PubMed record.
Abstract
backgroundPatients with immunodeficiency syndromes associated with anti-interferon-gamma (IFN-γ) autoantibodies are prone to a wide range of infections, particularly those caused by intracellular pathogens such as nontuberculous mycobacteria (NTM) or Talaromyces marneffei (T. marneffei). However, disseminated Mycobacterium kansasii (M. kansasii) infection co-occurring with T. marneffei infection is relatively rare. Here, we present a case of disseminated M. kansasii disease complicated by T. marneffei infection in a patient with anti-IFN-γ autoantibodies. CASE PRESENTATION: A 52-year-old man presented with a persistent cough, back pain, fever, generalized rash, and multiple enlarged lymph nodes. Chest computed tomography (CT) revealed hilar Masses, and technetium 99m (Tc-99m) skeletal scintigraphy showed multifocal increased osteoblastic activity. Histopathological examination of the hilar mass biopsy specimens revealed chronic suppurative inflammation. Metagenomic next-generation sequencing (mNGS) of the right submandibular lymph node identified M. kansasii, while blood culture isolated T. marneffei. The patient was diagnosed with disseminated M. kansasii infection co-existing with T. marneffei infection. Additionally, he tested positive for anti-IFN-γ autoantibodies. Combination therapy for NTM-comprising isoniazid, clarithromycin, moxifloxacin, and linezolid-in conjunction with antifungal therapy (amphotericin B followed by itraconazole) achieved a favorable clinical outcome.
conclusionsPatients with anti-IFN-γ autoantibodies are at risk of developing multiple opportunistic bacterial infections, which may occur concurrently or sequentially, complicating diagnosis. Early detection using mNGS is critical in these cases, as it enables timely therapeutic adjustments and improves clinical outcomes.
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