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HIV-associated neurodevelopmental delay: prevalence, predictors and persistence in relation to antiretroviral therapy
R Strehlau1, L Kuhn2,3, E J Abrams3,4
1Empilweni Services and Research Unit (ESRU), Rahima Moosa Mother and Child Hospital, Department of Paediatrics and Child Health Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa. renate.strehlau@wits.ac.za.
Insights
Antiretroviral therapy (ART) improved neurodevelopment in young children with HIV, but delays persist. Further interventions are crucial for maximizing developmental outcomes in these children.
Area of Science:
- Pediatric Neuroscience
- Infectious Diseases
- Developmental Psychology
Background:
- Infant HIV infection can negatively impact brain development.
- Early neurodevelopmental consequences are a concern for children with HIV.
Purpose of the Study:
- To assess neurodevelopmental characteristics in HIV-infected children before and after antiretroviral therapy (ART).
- To evaluate the impact of viral suppression on neurodevelopmental outcomes in young children with HIV.
Main Methods:
- The Neverest 2 trial enrolled 195 HIV-infected children under 2 years old.
- The Ages and Stages Questionnaire (ASQ) was used to screen neurodevelopmental functioning in five domains.
- Assessments were conducted before ART initiation and after achieving viral suppression.
Main Results:
- ART initiation and viral suppression led to significant improvements in gross motor, fine motor, problem-solving, and personal-social domains.
- The communication domain showed no significant change following ART and viral suppression.
- Despite improvements, a notable proportion of children continued to exhibit neurodevelopmental delays.
Conclusions:
- Achieving viral suppression with ART significantly enhances neurodevelopmental markers in young HIV-infected children.
- Persistent neurodevelopmental delays highlight the need for additional interventions.
- Maximizing developmental outcomes requires continued focus and targeted support for children with HIV.
Context:
HIV infection in infancy may influence the developing brain, leading to adverse neurodevelopmental consequences.
Objective:
We aim to describe neurodevelopmental characteristics of a cohort of HIV-infected infants and young children prior to antiretroviral therapy (ART) initiation and after achieving viral suppression.
Methods:
As part of the Neverest 2 trial, 195 HIV-infected children under 2 years of age were assessed using the Ages and Stages Questionnaire (ASQ) prior to ART initiation and at subsequent age-appropriate time points after ART had been started. The ASQ is a simple screening questionnaire used to identify children at risk of neurodevelopmental delays. Questionnaires completed by the parent/caregiver assess neurodevelopmental functioning in five domains: communication, gross motor, fine motor, problem solving and personal-social.
Results:
Median age pre-ART was 8.8 months (range 2.2-24.9) and 53.9% were male. Mean time to viral suppression was 9.4 months (range 5.9-14.5). Compared with pre-ART better outcomes were reported at time of viral suppression with a lower proportion of children failing the gross motor (31.5% vs. 13%, p = 0.0002), fine motor (21.3% vs. 10.2%, p = 0.017), problem solving (26.9% vs. 9.3%, p = 0.0003) and personal-social (19.6% vs. 7.4%, p = 0.019) domains. However, there was no change in the communication domain (14.8% vs. 12.0%, p = 0.6072).
Conclusion:
Although achieving viral suppression on ART resulted in significant improvements in markers of neurodevelopmental function of young HIV-infected children, potential neurodevelopmental delays still persisted in a large proportion. Further interventions are needed to limit potential disabilities and maximize developmental outcomes.
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