Sickle Cell Ulcer

The purpose of this study is to describe the transcriptomic profile of foetal cells in post-partum and more specifically to determine which chemokine receptors are overexpressed in foetal cells in post-partum women with wounds To do so, the investigators will isolate foetal cells from the peripheral blood of healthy controls post partum women as well as from post partum women with skin ulcers and then perform RNA sequencing.

WOUNDJOURNEY is a longitudinal, real-world, observational registry designed to capture the full clinical course and patient journey associated with chronic wounds and ulcers. Data are collected during routine care from over 1,400 clinicians across the USA and Puerto Rico using a highly structured certified electronic health record (EHR) or electronic data capture (EDC) system. Data are transmitted daily to the U.S. Wound Registry (USWR), a CMS-recognized Qualified Clinical Data Registry (QCDR). The registry captures real-time, research-ready data on patient demographics, comorbidities, wound characteristics, standard-of-care treatments, complications, and advanced therapeutics. It supports robust, fit-for-purpose real-world evidence generation by enabling risk-adjusted outcome analysis, comparative effectiveness research, and quality improvement across diverse sites of care.