Efficacy of Cytomegalovirus Specific Immunoglobulins to Reduce CMV Reactivation in Pediatric Hematopoietic Stem Cell Transplant Recipients.

J Pediatr Hematol Oncol

Department of Paediatric Stem Cell Transplant, Birmingham Women and Children's NHS Foundation Trust.

Published: January 2023

AI Article Synopsis

  • Cytomegalovirus (CMV) is a significant concern for children undergoing hematopoietic stem cell transplant (HSCT), where antiviral therapy is commonly used for prevention.
  • A study examined 49 "at risk" HSCT recipients, comparing those who received CMV-specific immunoglobulins (CMV-Ig) alongside standard antiviral treatment to those who did not.
  • Results suggested a trend showing lower CMV reactivation rates, shorter recovery times, and lower peak titers in the CMV-Ig group, indicating that it could be a safe option to enhance prevention of CMV infection post-transplant, although further research is needed due to the small sample size.

Article Abstract

Cytomegalovirus (CMV) infection is a serious complication of pediatric hematopoietic stem cell transplant (HSCT). To date, antiviral therapy has been the mainstay of prophylaxis, with conflicting results regarding the benefits of CMV-specific immunoglobulins (CMV-Ig). After introducing prophylactic CMV-Ig to HSCT recipients at risk (seropositive recipient and/or donor), we conducted a single-center retrospective study comparing the incidence and severity of CMV infection with and without CMV-Ig. We identified 49 'at risk' recipients from 76 consecutive HSCTs over 3.5 years, in addition to standard antiviral prophylaxis, 10 patients received CMV-Ig and 39 did not. There was no significant difference in donor type, cell source, conditioning, or CMV status between the groups. We observed a potential trend toward reduction of incidence of CMV reactivation in patients exposed to CMV-Ig (30%) compared with those who weren't (38.4%). Besides, no symptomatic or lethal infection was observed in the CMV-Ig group, and time to recovery seemed shorter (21 [±7] vs 51.4 [±55] days) and peak titers lower (4578 [±4788] vs 24131 [±49257]) with CMV-Ig. No adverse events were noted. The statistical significance of the results was limited by the small sample size. These data raise interest in prophylactic CMV-Ig as a safe way of potentially reducing the severity and duration of CMV reactivation in HSCT.

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Source
http://dx.doi.org/10.1097/MPH.0000000000002553DOI Listing

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