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Updated: Feb 2, 2026

In Ovo Xenografting of Patient-Derived Acute Lymphoblastic Leukemia (ALL) Cells (PDX-ALL)
Published on: August 1, 2025
CD99 expression is strongly associated with clinical outcome in children with B-cell precursor acute lymphoblastic
Dongfeng Chen1,2, Alessandro Camponeschi1, Qingqing Wu3
1Department of Rheumatology and Inflammation Research, University of Gothenburg, Gothenburg, Sweden.
Abstract:
Our study aimed to determine the expression pattern and clinical relevance of CD99 in paediatric B-cell precursor acute lymphoblastic leukaemia (BCP-ALL). Our findings demonstrate that high expression levels of CD99 are mainly found in high-risk BCP-ALL, e.g. BCR-ABL1 and CRLF2Re/Hi, and that high CD99 mRNA levels are strongly associated with a high frequency of relapse, high proportion of positive for minimal residual disease at day 29 and poor overall survival in paediatric cohorts, which indicate that CD99 is a potential biomarker for BCP-ALL.
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