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Use of Neuroimaging to Inform Optimal Neurocognitive Criteria for Detecting HIV-Associated Brain Abnormalities

  • Laura M. Campbell (a1) (a2), Christine Fennema-Notestine (a2) (a3), Rowan Saloner (a1) (a2), Mariam Hussain (a1) (a2), Anna Chen (a2), Donald Franklin (a2), Anya Umlauf (a2), Ronald J. Ellis (a2), Ann C. Collier (a4), Christina M. Marra (a5), David B. Clifford (a6), Benjamin B. Gelman (a7), Ned Sacktor (a8), Susan Morgello (a9), J. Allen McCutchan (a10), Scott Letendre (a2) (a10), Igor Grant (a2), Robert K. Heaton (a2) and for the CHARTER Group (a1) (a2) (a3) (a4) (a5) (a6) (a7) (a8) (a9) (a10)...

Abstract

Objective:

Frascati international research criteria for HIV-associated neurocognitive disorders (HAND) are controversial; some investigators have argued that Frascati criteria are too liberal, resulting in a high false positive rate. Meyer et al. recommended more conservative revisions to HAND criteria, including exploring other commonly used methodologies for neurocognitive impairment (NCI) in HIV including the global deficit score (GDS). This study compares NCI classifications by Frascati, Meyer, and GDS methods, in relation to neuroimaging markers of brain integrity in HIV.

Method:

Two hundred forty-one people living with HIV (PLWH) without current substance use disorder or severe (confounding) comorbid conditions underwent comprehensive neurocognitive testing and brain structural magnetic resonance imaging and magnetic resonance spectroscopy. Participants were classified using Frascati criteria versus Meyer criteria: concordant unimpaired [Frascati(Un)/Meyer(Un)], concordant impaired [Frascati(Imp)/Meyer(Imp)], or discordant [Frascati(Imp)/Meyer(Un)] which were impaired via Frascati criteria but unimpaired via Meyer criteria. To investigate the GDS versus Meyer criteria, the same groupings were utilized using GDS criteria instead of Frascati criteria.

Results:

When examining Frascati versus Meyer criteria, discordant Frascati(Imp)/Meyer(Un) individuals had less cortical gray matter, greater sulcal cerebrospinal fluid volume, and greater evidence of neuroinflammation (i.e., choline) than concordant Frascati(Un)/Meyer(Un) individuals. GDS versus Meyer comparisons indicated that discordant GDS(Imp)/Meyer(Un) individuals had less cortical gray matter and lower levels of energy metabolism (i.e., creatine) than concordant GDS(Un)/Meyer(Un) individuals. In both sets of analyses, the discordant group did not differ from the concordant impaired group on any neuroimaging measure.

Conclusions:

The Meyer criteria failed to capture a substantial portion of PLWH with brain abnormalities. These findings support continued use of Frascati or GDS criteria to detect HIV-associated CNS dysfunction.

Copyright

Corresponding author

Correspondence and reprint requests to: Robert K. Heaton, Ph.D., Distinguished Professor of Psychiatry, University of California, San Diego, HIV Neurobehavioral Research Program, 220 Dickinson St, Suite B, MC8231, San Diego, CA 92103-8231. E-mail: rheaton@ucsd.edu

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Campbell et al. supplementary material
Campbell et al. supplementary material

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Use of Neuroimaging to Inform Optimal Neurocognitive Criteria for Detecting HIV-Associated Brain Abnormalities

  • Laura M. Campbell (a1) (a2), Christine Fennema-Notestine (a2) (a3), Rowan Saloner (a1) (a2), Mariam Hussain (a1) (a2), Anna Chen (a2), Donald Franklin (a2), Anya Umlauf (a2), Ronald J. Ellis (a2), Ann C. Collier (a4), Christina M. Marra (a5), David B. Clifford (a6), Benjamin B. Gelman (a7), Ned Sacktor (a8), Susan Morgello (a9), J. Allen McCutchan (a10), Scott Letendre (a2) (a10), Igor Grant (a2), Robert K. Heaton (a2) and for the CHARTER Group (a1) (a2) (a3) (a4) (a5) (a6) (a7) (a8) (a9) (a10)...

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