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  • Title: Cancer in 22q11.2 deletion syndrome: A case report and literature review.
    Author: Liu B, Lu Y, Wang Q, Dai Y, Liu L.
    Journal: Eur J Med Genet; 2024 Aug; 70():104959. PubMed ID: 38969060.
    Abstract:
    Clinically, the 22q11.2 deletion syndrome (22q11.2DS) is considered the most commonly detected microdeletion syndrome. Hepatoblastoma is the most prevalent malignant liver cancer in childhood. However, cases of hepatoblastoma in children with 22q11.2DS have only been reported in four patients. In this report, we present a-13-year-old male treated at our center due to growth retardation, and later diagnosed with hepatoblastoma. Whole genome sequencing (WGS) identified 22q11.2DS. Chromosomal microarray analysis (CMA) of peripheral blood sample showed a 2.9 Mb deletion of chromosome 22q11.2. While underlying mechanisms remain unclear, our literature review suggests that patients with 22q11.2DS may show an elevated risk of malignancy. After reviewing 21 previously reported cases, we identified 33 individuals with both cancer and 22q11.2 DS or DiGeorge syndrome. Of these cases, 7 out of 33 (21%) were hematologic tumors, while 26 out of 33 (78%) were solid tumors.
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