Changes in Neutrophil Count During Valganciclovir Therapy for Symptomatic Congenital Cytomegalovirus Infection

<b>Background/Objectives</b>: Neutropenia is a common adverse effect of oral valganciclovir (VGCV) treatment in infants with congenital cytomegalovirus infection (CCMVI), with an estimated prevalence of 20%. However, its clinical course and associated factors, including the influence of...

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Main Authors: Aoi Kawamura, Shinya Abe, Keisuke Shirai, Yu Masuda, Yukihito Imagawa, Yuki Nakata, Takumi Kido, Mariko Ashina, Hisayuki Matsumoto, Kenji Tanimura, Yasumasa Kakei, Takumi Imai, Kandai Nozu, Kazumichi Fujioka
Format: Article
Language:English
Published: MDPI AG 2025-07-01
Series:Biomedicines
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Online Access:https://www.mdpi.com/2227-9059/13/7/1739
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Summary:<b>Background/Objectives</b>: Neutropenia is a common adverse effect of oral valganciclovir (VGCV) treatment in infants with congenital cytomegalovirus infection (CCMVI), with an estimated prevalence of 20%. However, its clinical course and associated factors, including the influence of VGCV dosage, remain inadequately characterized. <b>Methods</b>: We conducted a single-center retrospective cohort study of infants treated with VGCV for symptomatic congenital CMV infection (CCMVI) at the Kobe University Hospital between 1 April 2009 and 31 March 2017. Detailed descriptive analyses of neutropenia were performed, and factors associated with its onset were explored using univariable logistic regression analyses. <b>Results</b>: A total of 31 patients were included, and neutropenia occurred in 35% of them during the 6-week treatment period. Its occurrence was observed throughout the treatment course, with no substantial difference in incidence between the 16 mg/kg/day and 32 mg/kg/day dosing groups. Neutropenia was more likely to occur in infants with shorter gestational age. <b>Conclusions</b>: Neutropenia occurred in 35% of patients during 6 weeks of VGCV treatment, irrespective of dosage, and was more common in those with shorter gestational age.
ISSN:2227-9059