Clinical trials in sickle cell disease (SCD) often focus on health care utilization for painful vaso-occlusive crises (VOC). However, no objective, quantifiable pain biomarkers exist, pain is not specific to VOCs, health care utilization varies between patients, unreported at-home VOCs likely contribute to long-term outcomes, and patient-reported outcomes are seldom considered. This non-interventional, longitudinal, 6-month study aimed to develop tools to identify VOCs in SCD patients with or without health care utilization. Participants wore an actigraph device, tracking sleep and activity. SCD patients used an electronic patient-reported outcome (ePRO) tool collecting pain, medication, fatigue, and daily function.

https://pubmed.ncbi.nlm.nih.gov/33067606/