Computerized intervention for amelioration of cognitive late effects among childhood cancer survivors.

Abstract

10034 Background: Children treated for cancer with CNS-directed therapy are at significant risk for attention and working memory (WM) problems. There is empirical support for pharmacotherapy and therapist-delivered cognitive rehabilitation; yet, the reach of these approaches is limited by medical contraindications, need for facility proximity and high resource utilization. A computer-based WM intervention has demonstrated efficacy for healthy individuals with attention disorders. We investigated this approach with childhood cancer survivors. Methods: Sixty-eight survivors of childhood acute lymphoblastic leukemia (ALL) or brain tumor (BT) with identified WM deficits were randomly assigned to a computerized WM intervention (18 males/16 females, 23 ALL/11 BT, age= 12.21±2.47) or a wait-list control group (18 males/16 females, 24 ALL/10 BT, age= 11.82±2.42). Participants in the intervention group were asked to complete 25 training sessions at home with weekly, phone-based coaching support. Cognitive assessments were completed pre- and post-intervention. Results: Among 34 participants randomized to intervention, 30 (88%) were adherent while 4 were removed from intervention because they failed to complete training in the allotted time. Survivors who completed the intervention demonstrated significantly greater improvements than controls on measures of attention (e.g., WISC-IV Spatial Span Forward 3.30±3.87 vs 1.33±2.20, p= .02, ES= .63), WM (e.g., WISC-IV Spatial Span Backward 3.13±3.19 vs 0.80±2.46, p= .002, ES= .82) and processing speed (e.g., Conners’ CPT Hit Reaction Time -2.10±8.04 vs 2.36±6.68, p= .02, ES=.60), and showed greater reductions in parent reported executive dysfunction (e.g., Conners’ Parent Rating Scale, III -6.73±8.25 vs .13±8.86, p= .003, ES= .80). No group differences in academic fluency were found (e.g., Woodcock Johnson III Math Fluency 0.90±4.59 vs 1.90±7.18, p= .52, ES= .17). Conclusions: Study results suggest computerized intervention is feasible and efficacious for childhood cancer survivors, with some evidence for generalized benefits. Computerized training may offer a safer, less time intensive and more portable alternative to existing interventions. Clinical trial information: NCT01217996.