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Published on: October 6, 2022
Neurocognitive functioning in pediatric human immunodeficiency virus infection: effects of combined therapy
Manisha C Shanbhag1, Richard M Rutstein, Theoklis Zaoutis
1Division of General Pediatrics, Childrens Hospital of Philadelphia, Philadelphia, PA 19103, USA. shanbhag@email.chop.edu
Insights
Combination antiretroviral therapy has improved neurocognitive outcomes in children with perinatally acquired human immunodeficiency virus (HIV) infection. Fewer children now experience progressive encephalopathy, and neurocognitive function is preserved over time.
Area of Science:
- Pediatric infectious diseases
- Neurovirology
- Clinical immunology
Background:
- Perinatally acquired human immunodeficiency virus (HIV) infection can impact neurocognitive development.
- Combination antiretroviral therapy (cART) has transformed HIV management.
- Understanding the long-term neurocognitive effects of cART in this population is crucial.
Purpose of the Study:
- To evaluate the impact of cART on neurocognitive outcomes in perinatally HIV-infected children.
- To identify if CD4 percentage and plasma HIV-1 RNA levels predict future neurocognitive function.
Main Methods:
- Retrospective cohort study at an urban HIV-dedicated care center.
- Included 146 perinatally HIV-infected children with at least one neurocognitive evaluation.
- Assessed neurocognitive standard testing scores and encephalopathy diagnoses.
Main Results:
- Prevalence of progressive encephalopathy decreased significantly after 1996 (29.6% to 12.1%).
- Overall encephalopathy prevalence dropped from 40.7% to 18.2% in the same periods.
- Neurocognitive scores remained stable in healthy children and improved in those treated after 1996.
Conclusions:
- Fewer children diagnosed with progressive encephalopathy since 1996.
- Neurocognitive function is preserved in children deemed healthy at baseline.
- Viral load and CD4 percentage show marginal predictive value for neurocognitive changes.
Objectives:
To assess the impact of combination antiretroviral therapy on neurocognitive outcomes in perinatally human immunodeficiency virus (HIV)-infected patients and to determine if CD4 percentage and plasma HIV-1 RNA level (viral load) are predictive of future neurocognitive function.
Design:
Retrospective cohort study.
Setting:
An HIV-dedicated urban care center.
Participants:
One hundred forty-six perinatally HIV-infected children born between June 1990 and May 2003 with at least 1 neurocognitive evaluation.
Main Outcome Measures:
Neurocognitive standard testing scores as well as diagnosis of progressive encephalopathy, probable progressive encephalopathy, or static encephalopathy.
Results:
The prevalence of progressive encephalopathy has decreased in children born prior to 1996 (period 1) compared with those born after 1996 (period 2) from 29.6% to 12.1% (P = .049). The prevalence of all progressive encephalopathy and static encephalopathy decreased from 40.7% to 18.2% in period 1 vs 2 (P = .02). For those diagnosed as neurocognitively healthy, neurocognitive scores remained stable over time with a mean (SD) standard score of 89.6 (11.8) at first evaluation compared with 91.9 (11.93) at most recent evaluation. The most recent mean (SD) standard score increased from 82.3 (18) to 87.2 (10.49) in period 1 vs period 2 (P = .001). A weak association was found between both the mean viral load (P = .06) and CD4 percentage (P<.001) and neurocognitive testing score 6 months later.
Conclusions:
Since 1996, fewer children have been diagnosed with progressive encephalopathy, and neurocognitive functioning is preserved over time in those deemed neurocognitively healthy at entry. Viral load and CD4 percentage are marginally predictive of future changes in neurocognitive standard scores. These data support the observation that combination antiretroviral therapy is associated with improved neurocognitive outcomes in children with perinatally acquired HIV infection.
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