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Gilad, Oded; Dgany, Orly; Noy-Lotan, Sharon; Krasnov, Tanya; Yacobovich, Joanne; Rabinowicz, Ron; Goldberg, Tracie; Kuperman, Amir A; Abu-Quider, Abed; Miskin, Hagit; Kapelushnik, Noa; Mandel-Shorer, Noa; Shimony, Shai; Harlev, Dan; Ben-Ami, Tal; Adam, Etai; Levin, Carina; Aviner, Shraga; Elhasid, Ronit; Berger-Achituv, Sivan; Chaitman-Yerushalmi, Lilach; Kodman, Yona; Oniashvilli, Nino; Hameiri-Grosman, Michal; Izraeli, Shai; Tamary, Hannah; Steinberg-Shemer, Orna
Haematologica, 09/2022, Letnik: 107, Številka: 9Journal Article
Prolonged cytopenias are a non-specific sign with a wide differential diagnosis. Among inherited disorders, cytopenias predisposing to leukemia require a timely and accurate diagnosis to ensure appropriate medical management, including adequate monitoring and stem-cell transplantation prior to the development of leukemia. We aimed to define the types and prevalences of the genetic causes leading to persistent cytopenias in children. The study comprises children with persistent cytopenias, myelodysplastic syndrome, aplastic anemia, or suspected inherited bone marrow failure syndromes, who were referred for genetic evaluation from all pediatric hematology centers in Israel during 2016-2019. For variant detection, we used Sanger sequencing of commonly mutated genes and a custommade targeted next-generation sequencing panel covering 226 genes known to be mutated in inherited cytopenias; the minority subsequently underwent whole exome sequencing. In total, 189 children with persistent cytopenias underwent a genetic evaluation. Pathogenic and likely pathogenic variants were identified in 59 patients (31.2%), including 47 with leukemia predisposing syndromes. Most of the latter (32, 68.1%) had inherited bone marrow failure syndromes, 9 (19.1%) had inherited thrombocytopenia predisposing to leukemia, and 3 each (6.4%) had predisposition to myelodysplastic syndrome or congenital neutropenia. Twelve patients had cytopenias with no known leukemia predisposition, including nine children with inherited thrombocytopenia and three with congenital neutropenia. In summary, almost one-third of 189 children referred with persistent cytopenias had an underlying inherited disorder; 79.7% of whom had a germline predisposition to leukemia. Precise diagnosis of children with cytopenias should direct follow-up and management programs and may positively impact disease outcome.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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