Abstract
PROs are increasingly used in HCT to capture symptoms, quality of life, and functional status. At the Cleveland Clinic, PROs are systematically collected prior to ambulatory visits and used in routine clinical care to identify patients (pts) with distress in real-time through a data capture initiative called the "Knowledge Program." Instruments include the Patient Health Questionnaire (PHQ-9), National Comprehensive Cancer Network Distress Thermometer (DT), and Patient-Reported Outcomes Measurement Information System (PROMIS) Physical Health (PH) and Mental Health (MH) assessments. There are limited data on the use of these instruments in the HCT population. We evaluated these PRO measures in HCT recipients and their association with post-HCT outcomes. We identified 292 adult pts undergoing first allogeneic HCT from 2015-2018. Of those, 257 had at least one PRO assessment and were included in this analysis. Time intervals evaluated were: pre-HCT (within 3 months [mos]), 0-6 mos, 6-12 mos, 1-2 years (yrs), and 2-5 yrs post HCT. PHQ-9 assesses depression and categorized as minimal (score 0-4), mild (5-9), moderate (10-14), moderately severe (15-19), and severe (20-27). Higher DT scores indicate more distress and categorized as mild (0-3), moderate (4-7), severe (8-10). Lower scores on PROMIS indicate poorer PH or MH respectively. We evaluated PRO data descriptively for each time interval. Pre-HCT scores were analyzed for association with grade 2-4 acute graft-versus-host disease (GVHD), relapse, non-relapse mortality (NRM), and survival. Figure 1 shows boxplots for mean PHQ-9 and DT scores pre- and post-HCT. Mean scores for the PHQ-9 ranged from 1.1 ± 2.4 (SD) occurring >2 yrs post-HCT to 2.4 ± 3.0 pre-HCT. Mean DT scores were overall low, with highest distress (2.0 ± 2.2) seen pre-HCT. Mean scores for PH and MH were similar at each time intervals, with means ranging 47-48 for PH and 49-51 for MH. Higher PHQ-9 pre-HCT was associated with higher NRM (HR 1.21, 95% CI 1.09-1.34, P<0.001) and worse overall mortality (HR 1.12, 95% CI 1.02-1.23, P=0.016). Higher PROMIS PH and MH scores were associated with lower NRM (HR 0.49, 95% CI 0.26-0.94, P=0.031 and HR 0.28, 95% CI 0.14-0.56, P<0.001), respectively. DT scores had no associations with any outcome. Pts who developed acute GVHD had significantly higher PHQ-9 scores (mean 2.8 vs 1.9, P=0.014), PROMIS-PH (mean 45 vs 49, P=0.029) and MH scores (mean 47 vs 52, P=0.011) relative to those who did not have acute GVHD. PROs such as the PHQ-9, DT, and PROMIS have important clinical utility in allogeneic HCT recipients. Routine clinical use of these assessments not only help identify pts with high levels of distress or depression in real-time, they also demonstrate prognostic value for post-HCT survival outcomes.
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