HHV-6 infection in a pediatric kidney transplant patient

Area of Science:

• Virology
• Immunology
• Transplantation Medicine

Background:

• Human herpesvirus 6 (HHV-6) is a known opportunistic pathogen.
• HHV-6 infection can present with diverse and severe complications in immunocompromised individuals, including transplant recipients.
• Early diagnosis and understanding of HHV-6 manifestations are crucial in managing transplant patients.

Observation:

• A pediatric renal transplant recipient developed gastrointestinal symptoms (diarrhea, poor feeding) post-transplantation.
• The patient later presented with fever, elevated creatinine and LDH, followed by anemia and leucopenia.
• Physical examination revealed no specific signs of rash, pneumonitis, or encephalitis.

Findings:

• Polymerase Chain Reaction (PCR) assay detected HHV-6 in serum and bone marrow aspirates.
• HHV-6 was identified as the sole pathogen responsible for the observed clinical deterioration.
• The patient experienced a full recovery without requiring specific antiviral treatment for HHV-6.

Implications:

• This case underscores the broad spectrum of clinical presentations of HHV-6 infection in immunosuppressed patients.
• It highlights the importance of considering HHV-6 in the differential diagnosis of unexplained cytopenias and systemic illness post-transplantation.
• The successful outcome without specific treatment suggests the potential for self-limiting HHV-6 infections in some transplant patients, warranting further investigation.