Immune reconstitution inflammatory syndrome in HIV-negative patients with hematological malignancies and hematopoietic stem cell transplantation: A case series and a literature review
DOI:
https://doi.org/10.46765/2675-374X.2025v6n1p253Keywords:
Immune Reconstitution Inflammatory Syndrome, Immunosuppression therapy, Opportunistic infectionsAbstract
Immune reconstitution inflammatory syndrome (IRIS) is a potentially severe complication following the withdrawal of immunosuppressive agents, commonly studied in human immunodeficiency virus (HIV) positive patients. However, its impact on individuals with hematological malignancies and those undergoing hematopoietic stem cell transplants is less understood. This study aimed to establish diagnostic criteria for IRIS in these populations and assess its incidence and clinical progression. A cross-sectional, prospective observational study was conducted with 159 chemotherapy patients and 96 hematopoietic stem cell transplant recipients. IRIS diagnosis criteria were derived from a literature review of 70 studies, and patients were monitored for 11 months. The review identified key IRIS diagnostic criteria, including paradoxical clinical worsening, antimicrobial refractoriness, and inflammatory signs following immunosuppressive therapy. Most IRIS cases were linked to pathogens like Mycobacterium, Candida spp., and Aspergillus spp. Among our patients, three cases of IRIS were identified: one related to the Bacillus Calmette-Guérin (BCG) vaccine, another with neutrophil recovery, and the third with chronic disseminated candidiasis. Treatment with corticosteroids and antimicrobial therapy allowed continued chemotherapy without impacting the underlying disease’s outcomes. IRIS is an important complication in hematological and stem cell transplant patients. Early recognition and appropriate treatment, including corticosteroids and antimicrobial therapy, are critical for successful management and uninterrupted cancer treatment.
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