1. Personalized health risk assessment based on single-cell RNA sequencing analysis of a male with 45, X/48, XYYY karyotype.
- Author
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Koczkowska M, Jąkalski M, Birkholz-Walerzak D, Kostecka A, Iliszko M, Wójcik M, Lewandowski K, Milska-Musa K, Buckley PG, Drężek K, Juhas U, Kuziemska E, Maciejewska A, Pawłowski R, Wasąg B, Filipowicz N, Chojnowska K, Ławrynowicz U, Dumanski JP, Lipska-Ziętkiewicz BS, Mieczkowski J, and Piotrowski A
- Subjects
- Male, Humans, Adolescent, Karyotyping, Karyotype, Risk Assessment, Sequence Analysis, RNA, Neoplasms
- Abstract
Numeric sex chromosome abnormalities are commonly associated with an increased cancer risk. Here, we report a 14-year-old boy with a rare mosaic 45, X/48, XYYY karyotype presenting with subtle dysmorphic features and relative height deficiency, requiring growth hormone therapy. As only 12 postnatal cases have been described so far with very limited follow-up data, to assess the proband's long-term prognosis, including cancer risk, we performed high-throughput single-cell RNA sequencing (scRNA-seq) analysis. Although comprehensive cytogenetic analysis showed seemingly near perfect balance between 45, X and 48, XYYY cell populations, scRNA-seq revealed widespread differences in genotype distribution among immune cell fractions, specifically in monocytes, B- and T-cells. These results were confirmed at DNA level by digital-droplet PCR on flow-sorted immune cell types. Furthermore, deregulation of predominantly autosomal genes was observed, including TCL1A overexpression in 45, X B-lymphocytes and other known genes associated with hematological malignancies. Together with the standard hematological results, showing increased fractions of monocytes and CD4+/CD8+T lymphocytes ratio, long-term personalized hemato-oncological surveillance was recommended in the reported patient., (© 2022. The Author(s).)
- Published
- 2022
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